A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of mortar rendering on chloride penetration into concrete structures
Abstract This experimental work studied the influence of mortars used as external rendering on chloride transport in concrete. Prismatic concrete specimens were cast with dimensions of 80×80×80mm and water to binder ratio of 0.55. Three different mixtures of mortar were used to cover these specimens, after making a thin layer of spatter dash treatment. Reference concrete specimens were also cast. After a curing period in wet chamber and in laboratory environment, five of the six faces of the specimens were coated with epoxy resin to simulate unidirectional flux of chloride during the test. The specimens were subjected to natural diffusion tests for 49days and, afterwards, samples were extracted and analysed to obtain chloride profiles. Results show that mortar renderings directly influence chloride penetration into concrete and this influence is more pronounced for mortars with higher contents of cement and less porosity. This shows that, although mortars have higher porosity than concrete, they can provide an additional protection to concrete structures, delaying chloride penetration into bulk concrete.
Influence of mortar rendering on chloride penetration into concrete structures
Abstract This experimental work studied the influence of mortars used as external rendering on chloride transport in concrete. Prismatic concrete specimens were cast with dimensions of 80×80×80mm and water to binder ratio of 0.55. Three different mixtures of mortar were used to cover these specimens, after making a thin layer of spatter dash treatment. Reference concrete specimens were also cast. After a curing period in wet chamber and in laboratory environment, five of the six faces of the specimens were coated with epoxy resin to simulate unidirectional flux of chloride during the test. The specimens were subjected to natural diffusion tests for 49days and, afterwards, samples were extracted and analysed to obtain chloride profiles. Results show that mortar renderings directly influence chloride penetration into concrete and this influence is more pronounced for mortars with higher contents of cement and less porosity. This shows that, although mortars have higher porosity than concrete, they can provide an additional protection to concrete structures, delaying chloride penetration into bulk concrete.
Influence of mortar rendering on chloride penetration into concrete structures
Malheiro, R. (author) / Meira, G. (author) / Lima, M. (author) / Perazzo, N. (author)
Cement and Concrete Composites ; 33 ; 233-239
2010-11-23
7 pages
Article (Journal)
Electronic Resource
English
Influence of mortar rendering on chloride penetration into concrete structures
| Online Contents | 2011
Chloride Penetration into Concrete
| British Library Conference Proceedings | 2009
Chloride Penetration into Concrete
| British Library Online Contents | 2009
Chloride penetration into concrete
| Tema Archive | 2009
Chloride Penetration into Concrete
| Trans Tech Publications | 2008