Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Phosphate Cement-Based Concretes Containing Silica Fume
Phosphate-based cements have been proposed as alternative binders to ordinary portland cements in concretes and mortars. This study investigated the rheological and mechanical properties of binders and sand mortars produced using a magnesium potassium phosphate cement (MPPC) in combination with silica fume and other supplementary cementing materials. A phosphonic acid retarder was used to control the setting time of the fresh mixtures. The influence of chopped glass fibers or textile glass fabrics on the properties was also examined. The introduction of silica fume within the binder resulted in significant increases in the compressive strength at both early and extended ages. At 90 days, the average modulus of rupture was 4.2% of the corresponding cylinder compressive strengths. Moderate increases in compressive strength and significant increases in flexural strength were observed after the addition of chopped glass fibers or textile glass fabrics.
Phosphate Cement-Based Concretes Containing Silica Fume
Phosphate-based cements have been proposed as alternative binders to ordinary portland cements in concretes and mortars. This study investigated the rheological and mechanical properties of binders and sand mortars produced using a magnesium potassium phosphate cement (MPPC) in combination with silica fume and other supplementary cementing materials. A phosphonic acid retarder was used to control the setting time of the fresh mixtures. The influence of chopped glass fibers or textile glass fabrics on the properties was also examined. The introduction of silica fume within the binder resulted in significant increases in the compressive strength at both early and extended ages. At 90 days, the average modulus of rupture was 4.2% of the corresponding cylinder compressive strengths. Moderate increases in compressive strength and significant increases in flexural strength were observed after the addition of chopped glass fibers or textile glass fabrics.
Phosphate Cement-Based Concretes Containing Silica Fume
Luong T Hong (Autor:in) / Adam S Lubell
ACI materials journal ; 112
2014
Aufsatz (Zeitschrift)
Englisch
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