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Extensive growth in the developing countries due to infrastructure development is resulting into massive consumption of concrete thereby increasing the demand on concrete materials. Quite large amounts of fine aggregates are required for concrete in developing countries thus shortages of quality river sand is putting pressure on availability of fine aggregates. To fulfill the high demand of fine aggregates, a search for alternative materials is in process. Stone crushing and processing industry is a large industry which generates large amounts of stone dust and slurry which is a waste produced from this process. Tons of such waste generated has no useful purpose except as landfill material. Some preliminary studies have been conducted into use of marble/ limestone waste for use in concrete [1] [2].?This study aims at using stone dust as partial replacement of sand in concrete to observe its effects on workability and other mechanical properties. This would result in useful consumption of this waste product thereby eliminating environmental issues related to its disposal. Partial replacement of 10% and 20% sand replacement with stone dust is carried out with the use of self-compacting concrete with blended cement. Blended cement used contains 50% rice husk ash and 50% Portland cement. Such high strength SCC with blended cement containing 50% rice husk ash and 50% Portland cement has already been tested to provide better quality concrete [3]. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?MPa & 80?MPa. Compressive strengths of high strength SCC with blended cements and 10% and 20% replacement of sand with stone dust for 60?MPa and 80?MPa were observed to be higher by about 10% to 13% than the control specimen. Higher elastic moduli and reduced permeability were observed along with better sulphate and acid resistance. Better strengths and improved durability of such high strength SCC make it a more acceptabl
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篇名 Sustainable Construction—Use of Stone Dust as Plasticiser in High Strength SCC with Blended Cement
来源期刊 世界工程和技术(英文) 学科 医学
关键词 BLENDED CEMENTS STONE DUST Rice Husk Ash Sustainable Construction Industrial WASTE Agricultural WASTE in Concrete
年,卷(期) 2017,(3) 所属期刊栏目
研究方向 页码范围 412-420
页数 9页 分类号 R73
字数 语种
DOI
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研究主题发展历程
节点文献
BLENDED
CEMENTS
STONE
DUST
Rice
Husk
Ash
Sustainable
Construction
Industrial
WASTE
Agricultural
WASTE
in
Concrete
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研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
世界工程和技术(英文)
季刊
2331-4222
武汉市江夏区汤逊湖北路38号光谷总部空间
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482
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