Manufacture of High-Strength Aerated Concrete Containing Silica Fume

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Title: Manufacture of High-Strength Aerated Concrete Containing Silica Fume

Author(s): H. Fujiwara, E. Sawada, and Y. Ishikawa

Publication: Special Publication

Volume: 153

Issue:

Appears on pages(s): 779-794

Keywords: air entrainment; cellular concretes; compressive strength; high-strength concretes; lightweight aggregates; lightweight concretes; silica fume; Manufacturing

Date: 6/1/1995

Abstract:
The increasing construction of high-rise buildings in recent years had led to a demand for lightweight, high-strength concrete. In this study, the compositions of the matrix and the air void structure of aerated mortar containing silica fume were investigated as the basis for manufacturing lightweight, high-strength concrete. Mortars made with cement containing silica fume and fine or ultra-fine silica stone powder, having a particle size between that of cement and silica fume, were tested; the properties of cement paste in fresh and hardened conditions were improved. The compressive strength and the air void structure of prefoamed aerated mortars were determined and their relationship studied. Based on the results, it was confirmed that lightweight, high-strength concrete could be made with an effective combination of aerated mortar containing silica fume and lightweight coarse aggregate.