Title: Development of Super-High-Strength Concrete Made with Silica Fume Addition and Polymer Impregnation

Author(s): Y. Ohama, K. Demura, and R. Muranishi

Publication: Symposium Paper

Volume: 89

Issue:

Appears on pages(s): 231-248

Keywords: autoclaving; bauxite; compressive strength; high-strength concretes; impregnating; methyl methacrylate; polymer-ization; reproducibility; silica; water-reducing agents.

DOI: 10.14359/6251

Date: 12/1/1985

Abstract:
In the past a few years, greater interest has been focussed on the use of silica fume as a concrete admixture, which is a by-product in the manufacturing process of ferrosilicon and metallic silicon. The purpose of this study is to find appro-priate process conditions for developing superhigh strength concrete by the application of both silica fume addition and polymer impregnation. Base concrete was mixed by use of the silica fume and polyalkyl aryl sulfonate-type water-reducing agent, and cured in autoclave or hot water. The cured base concrete was dried, and impregnated with polymethyl methacrylate by thermal polymerization in hot water. The strength properties of such superhigh strength concrete were tested. The reproduci-bility of its strength development was examined. It is concluded that superhigh strength concrete having a compressive strength of 2370 to 2600 kg/cm2 is obtained by the above process with good reproducibility.