Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Attempts to improve the bond between cement paste and aggregate
Abstract Because there are many coatings on the surface of coarse aggregate particles that reduce the concrete strengths through the reduction of the bond between cement paste and aggregate, a laboratory work is presented whose objective was to find such aggregate coating that improves the concrete strength. To achieve this, coarse aggregate particles were coated with a thin epoxy layer, with or without an adhesive promoter, in which either fine sand particles, or unhydrated Portland cement particles were embedded to make the surface rougher, or chemically more reactive, or both. After the hardening of the epoxy, concrete was made with the coated aggregate and concrete strengths were tested. The test results obtained show that the attempts to increase strength were unsuccessful because even the most effective coating, that with unhydrated Portland cement, produced only small increases in strength.
Attempts to improve the bond between cement paste and aggregate
Abstract Because there are many coatings on the surface of coarse aggregate particles that reduce the concrete strengths through the reduction of the bond between cement paste and aggregate, a laboratory work is presented whose objective was to find such aggregate coating that improves the concrete strength. To achieve this, coarse aggregate particles were coated with a thin epoxy layer, with or without an adhesive promoter, in which either fine sand particles, or unhydrated Portland cement particles were embedded to make the surface rougher, or chemically more reactive, or both. After the hardening of the epoxy, concrete was made with the coated aggregate and concrete strengths were tested. The test results obtained show that the attempts to increase strength were unsuccessful because even the most effective coating, that with unhydrated Portland cement, produced only small increases in strength.
Attempts to improve the bond between cement paste and aggregate
Popovics, S. (Autor:in)
1987
Aufsatz (Zeitschrift)
Englisch
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