Comparative Study of Natural Zeolites and Other Inorganic Admixtures in Terms of Characterization and Properties of Mortars

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Title: Comparative Study of Natural Zeolites and Other Inorganic Admixtures in Terms of Characterization and Properties of Mortars

Author(s): Y. Kasai, K. Tobinai, E. Asakura, and N. Feng

Publication: Special Publication

Volume: 132

Issue:

Appears on pages(s): 615-634

Keywords: admixtures; bending; blast furnace slag; compressive strength; concretes; drying shrinkage; fly ash; mortars (material); quick lime; silica fume; water; zeolite; Materials Research

Date: 5/1/1992

Abstract:
A considerable amount of natural zeolite has been used as an admixture for portland cement in the People's Republic of China. Paper first deals with a comprehensive characterization of inorganic admixtures such as natural zeolites with different mineralogical compositions, a fly ash, a fine blast furnace slag, and a silica fume. Binders, such as ordinary portland cement and a quick lime for the substitution of portland cement, were also subjected to the characterization. Next, bending and compressive strength and drying shrinkage of the test mortars were measured under the constant flow value. Standard test mortars were prepared by making use of the ordinary portland cement and quick lime-substituted portland cement, and blended cement mortars were also tested with the inorganic admixtures previously mentioned. As a result, natural zeolite was proven to be of sufficient applicability as an admixture for cement.