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A platform for research: civil engineering, architecture and urbanism
Influence and effectiveness of water-repellent admixtures on pozzolana–lime mortars for restoration application
Highlights We designed innovative water-repellent pozzolana–lime mortars suitable for restoration of historical buildings. We performed an accurate study of the influence of water-repellent admixtures on the hydration of the designed mortars. The results are extremely useful to evaluate the compatibility of the designed mortars with the historical structures.
Abstract 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.
Influence and effectiveness of water-repellent admixtures on pozzolana–lime mortars for restoration application
Highlights We designed innovative water-repellent pozzolana–lime mortars suitable for restoration of historical buildings. We performed an accurate study of the influence of water-repellent admixtures on the hydration of the designed mortars. The results are extremely useful to evaluate the compatibility of the designed mortars with the historical structures.
Abstract 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.
Influence and effectiveness of water-repellent admixtures on pozzolana–lime mortars for restoration application
Falchi, Laura (author) / Müller, Urs (author) / Fontana, Patrick (author) / Izzo, Francesca C. (author) / Zendri, Elisabetta (author)
Construction and Building Materials ; 49 ; 272-280
2013-08-24
9 pages
Article (Journal)
Electronic Resource
English
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