Use of kaolin waste for the production of cement bricks

被引：0
|
作者：
Rezende, Maria Luiza de S. [1 ]
Menezes, Romualdo R. [2 ]
Neves, Gelmires de Araujo [2 ]
Nascimento, Jose Wallace B. [3 ]
Leal, Antonio Farias [3 ]
机构：
[1] UFCG, COPEAG, Campinas, Brazil
[2] UFCG, Unidade Acad Eng Mat, Campinas, Brazil
[3] UFCG, Unidade Acad Eng Agricola, Campinas, Brazil
来源：
REM-REVISTA ESCOLA DE MINAS | 2008年 / 61卷 / 03期
关键词：
Recycling; kaolin waste; masonry block;
D O I：
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中图分类号：
学科分类号：
摘要：
Kaolin is a clay used in several industrial applications, however its production generates large amount of waste. Thus, the aim of this work is estimate the amount of kaolin production waste accumulated in the production region of the Paraiba state,Brazil, and evaluate its suitability as an alternative raw material for the production of masonry blocks without structural function. The waste was classified according to environmental laws, and characterized by chemical composition and physical characteristics determination. Satellite images were used to estimate the amount Of accumulated waste. Cement-sand masonry blocks were prepared partially substituting sand by kaolin waste and their compression strength and water absorption were determined. The waste was classified as non-dangerous but non-inert material, and the estimated amount of accumulated waste was higher than 2.6 millions tons. Sand can be partially substituted for kaolin waste in amounts of tip to 70% in the production of masonry blocks.
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页码：285 / 290
页数：6
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