On predicting compressive strengths of mortars with ternary blends of cement, GGBFS and fly ash

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(97)00039-2· OSTI ID:511893

Dehuai, Wang; Zhaoyuan, Chen ^[1]

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1. Tsinghua Univ., Beijing (China). Dept. of Civil Engineering

The simplex-centroid design with upper and lower bounds of component proportions was adopted to study the compressive strengths of mortars made with ternary blends of cement, ground granulated blast-furnace slag, and fly ash in this paper. Based on the results of a minimum of seven design points, three special cubic polynomial models were used to establish the strength-predicting equations at different ages for the mortars. five experimental checkpoints were also designed to verify the precision of the equations. With few exceptions, the errors of the predicted values were within 10%, and most were within 5%. At last, the ternary diagrams of compressive strengths at different ages were also drawn, and the compressive strengths could also be predicted from the iso-strength contour lines on them. The paper provides a rational way for determining the optimal proportions of two mineral admixtures when they are used in concrete.

• OSTI ID: 511893
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 4 Vol. 27; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
AGING
CEMENTS
COMPRESSION STRENGTH
CONCENTRATION RATIO
FLY ASH
MATHEMATICAL MODELS
MORTARS
PREDICTION EQUATIONS
SLAGS
WASTE PRODUCT UTILIZATION