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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prevention of autogenous shrinkage in high-strength concrete by internal curing using wet lightweight aggregates
Restrained autogenous shrinkage in high-strength lightweight aggregate concrete was investigated. Effects of a partial replacement of normal-weight aggregate by lightweight aggregate on autogenous shrinkage were also discussed. The concrete with saturated lightweight aggregate exhibited no autogenous shrinkage, whereas the normal-weight concrete with the same matrix exhibited large shrinkage. A partial replacement of normal-weight aggregate by 25% by volume of saturated lightweight aggregate was very effective in eliminating the autogenous shrinkage and restrained stresses of the normal-weight concrete. It should be noted that the internal supply of water from the saturated lightweight aggregate to the high-strength cement matrix caused continuous expansion, which may be related to continuous hydration.
Prevention of autogenous shrinkage in high-strength concrete by internal curing using wet lightweight aggregates
Restrained autogenous shrinkage in high-strength lightweight aggregate concrete was investigated. Effects of a partial replacement of normal-weight aggregate by lightweight aggregate on autogenous shrinkage were also discussed. The concrete with saturated lightweight aggregate exhibited no autogenous shrinkage, whereas the normal-weight concrete with the same matrix exhibited large shrinkage. A partial replacement of normal-weight aggregate by 25% by volume of saturated lightweight aggregate was very effective in eliminating the autogenous shrinkage and restrained stresses of the normal-weight concrete. It should be noted that the internal supply of water from the saturated lightweight aggregate to the high-strength cement matrix caused continuous expansion, which may be related to continuous hydration.
Prevention of autogenous shrinkage in high-strength concrete by internal curing using wet lightweight aggregates
Bentur, A. (Autor:in) / Igarashi, S.I. (Autor:in) / Kovler, K. (Autor:in)
Cement and Concrete Research ; 31 ; 1587-1591
2001
5 Seiten, 8 Quellen
Aufsatz (Zeitschrift)
Englisch
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