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Influence and effectiveness of water-repellent admixtures on pozzolana-lime mortars for restoration application
RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB.ORCID iD: 0000-0003-1904-7426
2013 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 49, p. 272-280Article in journal (Refereed) Published
Abstract [en]

Pozzolana-lime mortars modified with water-repellent admixtures were designed and studied to obtain mortars for restoration application. Powdered silane and calcium stearates were mixed with pozzolana, lime and sand and the chemical-physical properties of the resulting mortars were evaluated by X-ray diffraction, electron microscopy (SEM-EDX), thermogravimetric analysis and FT-IR spectroscopy. The mechanical behavior, the pore structure and the hygric behavior were measured. The resistance of water-repellent mortars to the salt crystallization was evaluated. Both calcium stearates and powdered silane allowed good water-repellent protection even if the water-repellent agents and their dosage modified some physical properties and the hydration kinetic.

Place, publisher, year, edition, pages
2013. Vol. 49, p. 272-280
Keywords [en]
Hydration, Pozzolana-lime mortars, Restoration, Silane, Stearates, Water absorption, Water-repellent admixtures
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-2708Local ID: 4042OAI: oai:DiVA.org:ri-2708DiVA, id: diva2:960311
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2018-08-15Bibliographically approved

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Mueller, Urs

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