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  • 101.
    Fjällberg, Leif
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Krympreducerares inverkan på cementbaserade materials krympning2002Report (Refereed)
    Abstract [sv]

    Shrinkage of concrete is a well-known fact in concrete technology. The most important reason for shrinkage is water movements in the concrete, which leads to contraction of the pores in the cement paste and the whole concrete shrinks. A great number of phenomena affect the shrinkage of concrete, such as the concrete composition, type of construction, humidity and temperature. Furthermore, different types of shrinkage and different shrinkage mechanisms exist, which appear at different relative humidities. Depending on e.g. the concrete composition, water to cement ratio and relative humidity, different types of mechanisms are dominating. The different shrinkage mechanisms result altogether in the free shrinkage of the concrete. _x000D_ _x000D_ A literature review was made to give a theoretical background of what kind of shrinkage mechanisms exist, how the shrinkage can be reduced and practical cases where the shrinkage has been reduced. _x000D_ _x000D_ Shrinkage reducing admixtures were started to develop in the beginning of the 1980's and they are different types of alcohols. They are considered to act mainly by reducing the surface tension of the pore water, whereby the shrinkage tensions in the concrete are reduced. This gives positive effects regardless of aggregate content, reinforcement and type of construction. Data exist in the literature where the shrinkage at 28 days has been reduced by 50-80 % and the final shrinkage by 25-50 %. _x000D_ _x000D_ In the laboratory experiments mortar prisms were made for the shrinkage measurements and for the determination of the compressive and tensile strengths. The experiments were planned so that the water content was constant while the cement and aggregate contents were changed. The cements used were the Swedish standard cements, Std P Slite designed for house building purposes and Degerhamn standard Portland cement designed for civil engineering structures. The shrinkage-reducing admixture was a polyalifatic alcohol. _x000D_ _x000D_ The microstructure was analysed by scanning electron microscope on both polished and cracked surfaces and by polarisation microscope on thin slices. The mineral composition was analysed by energy dispersive x-ray spectroscopy and x-ray diffraction. The hydration development was measured by isotherm calorimetry. _x000D_ _x000D_ The mortars with the lowest water to cement ratios and the highest cement contents shrinked most both with and without shrinkage reducing admixture and independent of type of cement. The shrinkage amount was, however, larger with the more finely ground cement, Std P Slite. _x000D_ _x000D_ With shrinkage-reducing admixture the final shrinkage (at about 650 days) could be reduced by about 19-37 % for the used mixtures. The shrinkage reduction is strongly dependent on the mix design and type of cement. The shrinkage was highest with the highest cement contents and with the more finely ground cement Std P Slite, for which the shrinkage reduction also was highest. _x000D_ _x000D_ The specimens containing shrinkage-reducing admixture lost more weight at drying and the weight was also more increased at rewetting. Regardless of this fact the shrinkage was reduced, which probably is an effect of the reduced surface tension and that the water thereby is kept in the smaller pores without vaporising and more water vaporises from the coarser capillaries. The greater water loss with shrinkage-reducing admixture indicates that the capillary system has become coarser. The rewetting experiments where the specimens with shrinkage-reducing admixture adsorb more water without giving larger expansion indicate that the change of the structure is permanent. _x000D_ _x000D_ The water loss was greater at higher water to cement ratios, when the content of the capillary water was greater. This indicates that water loss from finer pores (gel water) gives greater shrinkage than water loss from coarser capillary pores. This can partly be due to the fact that the mortar with the lower water to cement ratio contains less aggregate, which means that the stone skeleton becomes weaker and that the free shrinkage thereby becomes greater. _x000D_ _x000D_ The shrinkage-reducing admixture retarded the cement reactions and the retardation became stronger at lower water to cement ratios than at higher. The change that can be seen in the microstructure was a consequence of this, e.g. the number of larger calcium hydroxide crystals was increased, which probably contributed to the lower shrinkage (they provide more restraint to shrinkage in the material). The chemical composition of the C-S-H-gel is, however, almost unaffected by the shrinkage-reducing admixture. _x000D_

  • 102.
    Fjällberg, Leif
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Superplasticerarnas inverkan på cementpastans hydratation och flytförmåga1998Report (Refereed)
    Abstract [sv]

    In the investigation the two most common types of superplasticisers on the market, based on melamine and naphtalene respectively, have been investigated. The cement types used were a Swedish low alkali, sulfate resistant Portland cement, Std P Degerhamn and an ordinary Swedish Portland cement, Std P Slite. The first type is usually used for external constructions and the other for residential constructions. Std P Degerhamn is the type of cement that usually is used for high performance concrete, because it is only with this type of cement possible to achive good flowability at low water/cement ratios. These cements are two distinct types of Portland cement with different clinker composition. This makes not only a product testing possible but it gives also information about two different clinker and hydration systems. As well type of admixture as type of cement give in certain cases very different results what concerns flowability, heat flow, retardation, pore solution chemistry and influence on hydration products. _x000D_ _x000D_ Flowability was measured with a mini-slump cone and a paste viscosimeter. The tests with paste show that the required amount of superplasticiser, for both types of superplasticiser and cement, to achieve a certain flowability, is increased when the water/cement ratio is decreased. Individually they however differ. The greatest difference is that the naphtalene based superplasticiser in general is most efficient at low water/cement ratios (0.30). With melamine, Std P Slite cement and low water/cement ratios it is difficult to get a satisfying flowability undependent of dosage level. Std P Degerhamn cement gives better flowability than Std P Slite cement at the same dosage level of superplasticiser. This is probably due to the fact that Std P Degerhamn cement is more coarse grained and has a lower C3A content than Std P Slite cement. Because the effects of the superplasticisers are quite different at low water/cement ratios, it is reasonable to assume that they act by different mechanisms. _x000D_ The calorimeter measurements show that the cement hydration of Std P Degerhamn cement is more retarded than that of Std P Slite cement at enhanced dosage levels of superplasticiser. Both types of superplasticiser give almost the same retardation. _x000D_ The XRD investigations which give the clinker consumption at different ages, show mainly the effect of retardation, which in turn depends on type and dosage of superplasticiser. As for the calorimetric investigation the results show that the retardation is stronger in pastes made of Std P Degerhamn. The consumption of calcium silicates (C3S and C2S) becomes in time same as for the reference paste undependent of type of cement and superplasticiser. The essential difference between Std P Degerhamn cement and Std P Slite cement is that the Degerhamn cement has a high amount of C4AF (ferrite), while the Slite cement has a high amount of C3A. At the age of one they the ferrite reaction is as much retarded by naphtalene as by melamine. At later stages of hydration the melamine consumes more ferrite than the reference mixture and the mixture with naphtalene. The higher consumption of ferrite is not reflected in a higher ettringite formation, which indicate that the formation of monosulfate or an other type of ferrite hydrate is increased. A similar effect concerning C3A in the Slite cement can not be observed. At normal dosages of superplasticiser and for cement with normal C3A content the amount of ettringite formed in the hardened paste at late ages seems to increase. The opposite seems to be the case for cement with high C4AF content. The amount of calcium hydroxide (CH) in the hardened paste increases somewhat at low dosage levels of superplasticisers. At high dosage levels a decrease of the amount of formed CH at one day can be seen, because of the retardation of cement hydration. This phenomenon is more obvious in Degerhamn cement than in Slite cement. Concerning the amounts of especially ettringite and calcium hydroxide the results must be interpreted with caution because of the method of analysis (XRD). For instance the chrystal size affects the results. Other methods as thermogravimetry (TG) and differential scanning calorimetry (DSC) may give different results. _x000D_ The pore solution investigation reflects the dissolution of clinker compounds and the strength development by formation of cement hydrates. Moreover the superplasticisers affects directly the pore solution chemistry especially by giving an addition of sodium and sulfate ions. This can be seen in the pore solutions by increased amounts of alkalies and sulfates. The sulfate concentration decreases gradually by formation of ettringite and monosulfate, while the enhanced amounts of alkalies remains in the hardened cement paste. This is reflected in a permanent enhancement of hydroxyl ion concentration (OH-) and pH in the hardened cement paste. The superplasticisers generally increase the amount of calcium ions in the pore solution. This indicate that the superplasticisers directly influence the dissolution and precipitation mechanisms for the alite and belite components in the cement paste. The enhanced amounts of calcium in the pore solutions indicate that the calcium silicate hydrates bind less calcium or that the precipitation of calcium hydroxide and other products containing calcium is hampered. The precipitated amount of calcium hydroxyde is however often greater at low dosage levels at one day, indicating that the superplasticisers have changed the composition of the calcium silicate hydrates on the surfaces of the clinker grains. _x000D_ The retardation given by the superplasticisers is mainly determined by cement type which means clinker composition, fineness of cement and dosage of superplasticiser._x000D_ The superplasticisers affects mainly the dissolution of the clinker grains, but they also affect the precipitation mechanisms, especially that of calcium hydroxide and ettringite. _x000D_ The superplasticisers give an addition of both alkalies and sulfate in the cement paste, which affect both the hydration development and pH in the hardened concrete. _x000D_ The most essential information given by this investigation is that both superplasticiser, cement and water/cement ratio must be optimized to get the best effect. This is especially the case at low water/cement ratios. The superplasticisers also affect the cement hydration mainly by retardation, but also the formed reaction products are changed.

  • 103.
    Fjällberg, Leif
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Klingstedt, Gunnar
    Provning av sulfatresistens1994Report (Refereed)
  • 104.
    Fjällberg, Leif
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Lagerblad, Björn
    Cementbaserade injekteringsmedel.: Olika typer, cementreaktioner, bindetid och flytförmåga.2003Report (Refereed)
    Abstract [sv]

    A cement based injection grout is a slurry of particles. This slurry should be able to penetrate and fill cracks in the rock, where the slurry will stiffen resulting in a hard-ened product, which will stop water flow. For a good result you must be able to optimise and control both the penetration ability and stiffening. _x000D_ _x000D_ To get a background for how cements react chemically the work is divided in a theoretical and an experimental part, where the theoretical part takes into concid-eration the results from the experimental part. The injection cements are basically based on same clinker as ordinary Portland cements for construction purposes, but they are often more finely ground to be able to penetrate small cracks. As the hard-ening process is the same as for ordinary cements the theory for the ordinary ce-ments is considered. Hydration development, the use of chemical and mineral ad-mixtures and cement standards are briefly considered, as they form a theoretical background, which is useful when injection grouts are developed and optimised. _x000D_ _x000D_ Cement and other standards and regulations are intended for building purposes to give knowledge how different cements shall be used without giving any harmful consequences. An injection grout must not necessariliy follow these rules. Wrong cement in certain concrete combinations and in certain environments are swelling, thereby deteriorating the hardened concrete or cement product. The situation for a hardened injection grout is quite different, as it is locked in the rock and a swelling will result in tightening, which mostly is a benefit. This means that there are more degrees of freedom for injection grouts to mix different combinations of materials and to use different admixtures. It is, however, important to know what happens, so that the consequences can be considered properly in the actual case. For this reason both knowledge and testing are needed. _x000D_ _x000D_ An injection grout can be optimised both regarding penetration ability and stiff-ening/setting, but in most cases not both simultaneously. Often a compromise between different properties must be done. An injection grout suited for a specific situation is needed. The properties can be varied by using different cements, fine-ness, superplasticisers, chemical and mineral admixtures etc. _x000D_ _x000D_ In the experimental part of the work we have started from stable grouts for in-jection of cracks in rocks, which means that the grouts have such a cohesion that they do not separate. In some situations a rapid hardening is important and in other situations a slower hardening is allowed. Both slowly reacting and rapid hardening cements have been used together with different superplasticisers and in some cases mineral admixtures/binders, mainly to investigate the flowability and setting time. _x000D_ _x000D_ Generally rapid hardening is in conflict with good flowability. To get as stable grout as possible the w/b-ratio was mostly about 0,80, which will give a stable and strong hardened product. As the grout will be cooled in contact with the rock the experiments were performed at both room temperature and at 6-8°C, which is more relevant for the conditions in the Swedish rock. _x000D_ _x000D_ The purpose for the investigation was not primarily to achieve a specific grout, but to point out the controlling parameters and how they can be tested in the labo-ratory. _x000D_ _x000D_ Because of greater reaction surfaces a more finely ground cement reacts faster than a coarser cement and gives also a greater heat flow in a shorter time and a higher strength. With a finely ground cement it is more difficult to achieve a spe-cific flowability at a specific w/b-ratio, which means that the type and dosage of superplasticiser must be carefully optimised. If a grout with rapid hardening is wanted either an accelerator or a cement with an other composition is needed. _x000D_ _x000D_ The rapid reactions are mainly depending on the content of C3A, which reacts fastest of the cement clinker minerals. These cements are mainly used for house building purposes, where short setting times are wanted. Probably because of the rapid aluminate reactions the rapid hardening cements will get a worse flowability. A very finely ground cement with a moderate C3A-content of 7 % or more (the limit is not completely established), may give problems with false rapid setting. This is because the finely ground particles have changed the dissolution and reac-tion rates for the hydration processes. The result is an early rapid setting (false), which is not a result of the ordinary cement hydration. The false setting may how-ever be strong enough to stop water movements in the cracks. In the present inves-tigation the ordinary binding (from the ordinary cement reactions) could be delayed up to 40 hours. Also the superplasticisers give an other effect in the rapid hardening cements than in the slowly hardening cements. _x000D_ _x000D_ The false setting caused by aluminate/sulfate reactions can be controlled by a retarder e.g. citric acid and thereby the false setting can be utilised. This is the case for one of the investigated cements from Dyckerhoff. Its product Rock-U consists of a rapid hardening cement with a moderate C3A-content without gypsum. To control the setting a component called Compound B, which consists among other things of citric acid, is mixed with the cement. The more Compound B that is added the more the cement reactions are retarded, which gives a time dependent stiffening. Even though this stiffening is caused by a false setting, the ordinary reactions start later and by the time a hard and stable product is formed. _x000D_ _x000D_ If there is no demand on rapid setting the most secure (and cheapest) products are finely ground cements with a low C3A-content. Grinding a cement with a low C3A-content very finely, does not give any problems with too rapid hardening and also the flowability becomes good. Such a cement, which also was used in the in-vestigation, is the finely ground Swedish Degerhamn cement for civil engineering purposes. Different plasticisers affect the flowability and setting time differently. This is why the optimal plasticiser type and dosage must be achieved for every cement. A lower temperature (6-8)°C gives a stiffer grout and prolongs the setting time and also the difference between the different plasticisers is changed compared to the results at 20-25°C. This report shows a methodology to optimise grouts. _x000D_ _x000D_ Cements with a low C3A-content are slowly hardening and to accelerate the ce-ment reactions accelerators have been used. These can be used only to a certain limit, because too high dosages stiffen the grout markedly. The effect of using accelerators must be compared to the use of rapid hardening cements. _x000D_ _x000D_ Admixtures/binders like blast furnace slag, cristobalite (metastable quartz) and silica fume have also been tested. These can be used to dilute the cement or to give the grout a specified chemical composition. Also with these admixtures/binders good flowability is achieved, but with silica fume a gel is formed, which impair the penetration ability into small cracks. Finely ground blast furnace slag is the basic material in some injection grouts and can be mixed in different proportions with ordinary cements. The strength development, however, becomes slow. _x000D_ _x000D_ Altogether it can be said that good flowability was achieved with all the tested cements and mineral admixtures and that the slowly hardening cements can be accelerated to a certain degree, while the rapid hardening cements may give prob-lems with too early setting. A good flowability does not, however, guarantee that a good penetration in small cracks is achieved, since the filtration effect and gel for-mation may disturb the penetration. _x000D_ _x000D_

  • 105.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    A theory of water1952Report (Refereed)
  • 106.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Effect of dynamic forces on structures1948Report (Refereed)
  • 107.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Hållfasthetsbestämning hos betong medelst slag- och borrprov1944Report (Refereed)
  • 108.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Lattice dynamics of ice and a case of diffuse x-ray scattering1954Report (Refereed)
  • 109.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Om betongens elasticitetsmodul1945Report (Refereed)
  • 110.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    On the modulus of elasticity of concrete1945Report (Refereed)
  • 111.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    The clay-water system. 1, Crystal structure and water adsorption of clay minerals.: Paper read to The international ceramic congress at Maastricht, August 19481948Report (Refereed)
  • 112.
    Forslind, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Water association and hydrogels1954Report (Refereed)
  • 113.
    Forslind, Erik
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Bergström, Sven G
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Studier rörande råbetongens egenskaper.: Två inledningsanföranden vid ett colloquium anordnat vid Cement- och betonginstitutet 29/4 19481948Report (Refereed)
  • 114.
    Forssblad, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Sällström, Stig
    Stavvibrering av betong1986Report (Refereed)
  • 115.
    Giertz-Hedström, Stig
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Föreståndarens redogörelse för verksamheten under tiden 1 juli 1942-30 juni 19441945Report (Refereed)
  • 116.
    Giertz-Hedström, Stig
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Föreståndarens redogörelse för verksamheten under tiden 1 juli 1944-30 juni 19451946Report (Refereed)
  • 117.
    Gram, Hans-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Durability of natural fibres in concrete1983Report (Other academic)
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  • 118.
    Gram, Hans-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Research in the field of natural fibre reinforced concrete.: An overview.1980Report (Refereed)
  • 119.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    An electronographic study of the morphology and crystallization properties of calcium silicate hydrates1955Report (Refereed)
  • 120.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    An x-ray examination of the structure of vermiculites1954Report (Refereed)
  • 121.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Fresh cement paste.: Influence of admixtures and additives1986Report (Refereed)
  • 122.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Modified-heat cement.: Some structural data1986Report (Refereed)
  • 123.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    On the development of hydrate crystal morphology in silicate cement binders1975Report (Refereed)
  • 124.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    On the role of pore size and shape in strength-structure relationship of cement pastes1975Report (Refereed)
  • 125.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    On the use of dielectric methods for rapid measurement of capillary porosity in saturated cement pastes.1975Report (Refereed)
  • 126.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Strength, structure relationships of cement paste materials.: D. 1, Methods and basic data for studying phase composition and microstructure1977Report (Refereed)
  • 127.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Strength, structure relationships of cement paste materials.: D. 2, Methods and basic material data for studying strength and failure properties1979Report (Refereed)
  • 128.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Strength, structure relationships of cement paste materials.: D. 2, Methods and basic material data for studying strength and failure properties1979Report (Refereed)
  • 129.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Strength vs. structure in cement pastes1975Report (Refereed)
  • 130.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    The crystal structures of cement hydration. A review and a new gel structure model1986Report (Refereed)
  • 131.
    Grudemo, Åke
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    The dielectric properties of partially-dried pastes at audio to radio frequencies1986Report (Refereed)
  • 132.
    Hannawayya, Francisa
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Studies of hydration reactions of cement components1975Report (Refereed)
  • 133.
    Hansen, Torben
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    On rheology of hardened concrete1962Report (Refereed)
  • 134.
    Hansen, Torben C
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Creep and stress relaxation of concrete: a theoretical and experimental investigation1960Report (Refereed)
  • 135.
    Hansen, Torben C
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Creep of concrete: a discussion of some fundamental problems1958Report (Refereed)
  • 136.
    Hansen, Torben C
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Ytsprickbildning hos massiva betongkonstruktioner vid tidig formrivning1960Report (Refereed)
  • 137.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Alitens reaktionsförmåga: Kvantitativ kolorimetrisk silikatanalys.1944Report (Refereed)
  • 138.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Betongs, speciellt betongrörs, beständighet mot aggressiva vatten och lösningar: litteraturöversikt.1945Report (Refereed)
  • 139.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Changes occuring in the limestone during heating before dissociation1954Report (Refereed)
  • 140.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Chemical processes in the hardening of Portland cement1945Report (Refereed)
  • 141.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Elementär cementkemi: föredrag1951Report (Refereed)
  • 142.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Förslag till kalknomenklatur1951Report (Refereed)
  • 143.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Investigations of the lime burning processes1961Report (Refereed)
  • 144.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Kolorimetriska metoder för snabbanalys av silikatmaterial1947Report (Refereed)
  • 145.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Processes of diffusion, solution, and crystallisation in system Ca(OH)2-H2O1962Report (Refereed)
  • 146.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Sammanfattning av arbetsmetoder för kolorimetrisk snabbanalys av silikatmaterial.1948Report (Refereed)
  • 147.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Saturation concentration of calcium hydroxide1955Report (Refereed)
  • 148.
    Hedin, Rune
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Strength and structure of mortar with mixtures of hydraulic compounds1975Report (Refereed)
  • 149.
    Hedin, Rune
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Thorén, Per-Åke
    Lime research at the chemical department of the Swedish cement and concrete institute1949Report (Refereed)
  • 150.
    Hedström, Stig Giertz
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, CBI - Cement- och betonginstitutet.
    Beskrivning av Cement- och betonginstitutets byggnad1945Report (Refereed)
1234567 101 - 150 of 314
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