期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 120, 期 -, 页码 72-79出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2016.05.095
关键词
Iron ore tailings; Concrete; Workability; Strength properties; Durability; Chloride; Carbonation
资金
- Ministry of Education (MOE)
- Research Management Centre (RMC), Universiti Teknologi Malaysia, Malaysia [Q.J13000.2509.06H56]
Millions of tons of iron ore tailings (LOT); a by-product of iron ore processing are disposed of every year in landfills, quarries, rivers, oceans among others thereby posing environmental problems. The major aim of this study is to evaluate IOT as replacement for river sand in concrete and compare with the result of conventional concrete. Concrete mixtures containing 25%, 50%, 75% and 100% IOT as river sand replacement were prepared with 0.5 water-to-cement ratio (W/C). Compressive and splitting tensile strengths, modulus of elasticity and durability tests (drying-shrinkage, water absorption, chloride penetration and carbonation effects) were conducted on concrete containing IOT. A statistical fitted linear regression analysis was performed on compressive strength to evaluate the significant level of concretes containing IOT. According to British standard, sieve analysis results indicated that IOT were of medium grade quality. Test results indicated that the concrete workability was reduced with IOT while all other strength and modulus of elasticity data were consistently higher than conventional concrete at all levels of replacement. It is recommended that IOT should be used in concrete as sand replacement to minimize environmental problems, cost and natural resources depletion. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据