Effects of processing and materials variations on mechanical properties of lightweight cement composites

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• 作者：Park ; Seung Bum ; Yoon ; Eui Sik ; Lee ; Burtrand I.
• 关键词：Fracture toughness ; Mechanical properties ; Cement ; Silica fume ; Fiber reinforcement
• 刊名：Cement and Concrete Research
• 出版年：1999
• 出版时间：February, 1999
• 年：1999
• 卷：29
• 期：2
• 页码：193-200
• 全文大小：227 K

文摘

Low-density/low-cost cement composites were fabricated. Carbon and alkali-resistant glass fibers were used to reinforce the matrix of industrial by-products; fly ash with silica fume, Portland cement, and calcium silicates were mixed in different proportions. The additional low density was obtained by adding perlite and foaming agents followed by hot water curing. The composites also were prepared by autoclave curing for comparison. The mechanical properties were improved by increasing the amount of silica fume, fly ash, and fibers. Both carbon fibers and alkali-resistant glass fibers were effective in reinforcing the matrices, but carbon fibers were superior to glass fibers. Fabrication techniques for producing lightweight cement composites that can substitute for autoclaved lightweight concrete was developed. Publisher: Elsevier Science Language of Publication: English Item Identifier: S0008-8846(98)00221-X Publication Type: Article ISSN: 0008-8846 Cited by:

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Footnotes:

1. This paper was originally submitted to Advanced Cement Based Materials on 16 February 1998. The paper was received at the Editorial Office of Cement and Concrete Research on 12 October 1998 and accepted in final form on 16 November 1998.