Abstract
The compressive and flexural strength development and drying shrinkage of plain cement and cement-lime mortars under various temperature and humidity conditions have been investigated. The specimens were prepared at 20°, 35° and 50°C and were cured in lime-saturated water, or exposed to 33%, 75% or 92% relative humidity, for various periods up to one year. The results show that, while the ultimate strength of plain cement mortar is adversely affected by high temperature, both early and the ultimate strengths of cement-lime mortars increase with temperature. This effect is more pronounced with increasing lime content and is observed for all levels of humidity and curing period. The flexural to compressive strength ratio is affected only by the strength. High temperature increases the initial rate of drying shrinkage, but reduces the ultimate shrinkage.
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