Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Physico-chemical and mechanical characteristics of pozzolanic cement pastes and mortars hydrated at different curing temperatures
Highlights ► Temperature increases the pozzolanic activity of slag cement. ► Combined slag and chemically combined water contents increase with temperature. ► Elevated temperatures improve the early age compressive and flexural strength. ► Highest compressive and flexural strength of slag cement obtained at 35–100°C.
Abstract The effect of elevated curing temperature on the properties of cement mortars is vital for heat resistance. Addition of pozzolanas, such as slag, to type I cement is known to increase heat resistance. In this study, OPC was partially substituted by two types of slag (WCS and ACS) in the ratios of 10, 20, 30, 40 and 50wt.%. The cement mortars were cured for 120days at different curing temperature from 25 to 100°C. The results show that, elevated curing temperatures improves the early age strength in the all cement mortars. Also, the results indicated that, the pozzolanic cement mortars gives higher compressive strength than the plain cement mortars, especially at curing temperatures above 35°C. Therefore, slag pozzolanic cement mortars can be beneficially used in the hot conditions.
Physico-chemical and mechanical characteristics of pozzolanic cement pastes and mortars hydrated at different curing temperatures
Highlights ► Temperature increases the pozzolanic activity of slag cement. ► Combined slag and chemically combined water contents increase with temperature. ► Elevated temperatures improve the early age compressive and flexural strength. ► Highest compressive and flexural strength of slag cement obtained at 35–100°C.
Abstract The effect of elevated curing temperature on the properties of cement mortars is vital for heat resistance. Addition of pozzolanas, such as slag, to type I cement is known to increase heat resistance. In this study, OPC was partially substituted by two types of slag (WCS and ACS) in the ratios of 10, 20, 30, 40 and 50wt.%. The cement mortars were cured for 120days at different curing temperature from 25 to 100°C. The results show that, elevated curing temperatures improves the early age strength in the all cement mortars. Also, the results indicated that, the pozzolanic cement mortars gives higher compressive strength than the plain cement mortars, especially at curing temperatures above 35°C. Therefore, slag pozzolanic cement mortars can be beneficially used in the hot conditions.
Physico-chemical and mechanical characteristics of pozzolanic cement pastes and mortars hydrated at different curing temperatures
Abd-El.Aziz, M.A. (Autor:in) / Abd.El.Aleem, S. (Autor:in) / Heikal, Mohamed (Autor:in)
Construction and Building Materials ; 26 ; 310-316
18.06.2011
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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