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Effect of nanoparticles on the properties of masonry mortars and assemblages at a cold temperature

Cold weather masonry construction is a major concern for contractors as they either have to implement heating practices for laying and curing masonry systems or postpone the construction to warmer periods. This can lead to loss of productivity rate and delays in construction schedules with associated extra costs. This thesis explores a novel approach for mitigating the adverse effects of cold weather on masonry construction in early fall periods through the application of nano-alumina (NA) and nano-silica (NS) in mortar joints. The assessment criteria were based on the fresh properties, hardened properties and microstructural features of mortar mixtures and mechanical behaviour of concrete masonry prisms at early and later ages. Various test results show that NS can be successfully used to minimize the adverse effects of cold temperature on mortar joints by speeding up the hydration of cement, shortening the setting time, and increasing the strength up to 72 h.

Identiferoai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/24052
Date January 2014
CreatorsKazempour, Hooman
ContributorsBassuoni, Mohamed T.(Civil Engineering), El-Salakawy, Ehab (Civil Engineering) Rajapakse, Athula (Electrical and Computer Engineering)
PublisherASTM International, Canadian Society for Civil Engineers
Source SetsUniversity of Manitoba Canada
Detected LanguageEnglish

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