Shear behaviour and mechanical properties of steel fibre-reinforced cement-based and geopolymer oil palm shell lightweight aggregate concrete

被引：49
|
作者：
Mo, Kim Hung [1 ]
Yeoh, Khai Hung [1 ]
Bashar, Iftekhair Ibnul [1 ]
Alengaram, U. Johnson [1 ]
Jumaat, Mohd Zamin [1 ]
机构：
[1] Univ Malaya, Fac Engn, Dept Civil Engn, Kuala Lumpur 50603, Malaysia
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 148卷
关键词：
Shear behaviour; Geopolymer concrete; Lightweight aggregate concrete; Fibre reinforced concrete; Mechanical properties; FRACTURE-BEHAVIOR; BEAMS; RESISTANCE; TOUGHNESS; STRENGTH;
D O I：
10.1016/j.conbuildmat.2017.05.017
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The shear behaviour and mechanical properties (compressive, splitting tensile and flexural strengths) as well as the flexural toughness of steel fibre-reinforced cement-based and geopolymer oil palm shell lightweight aggregate concrete (OPS LWAC) were experimentally investigated in this paper. Steel fibres were added at various volume fractions for the cement-based OPS LWAC (0%, 0.5% and 1.0%) and geopolymer OPS LWAC (0%, 0.5%). Test results showed that steel fibre improved the mechanical properties of concrete, particularly for the splitting tensile strength whereas flexural toughness enhancement with the use of steel fibres was more evident for the cement-based OPS LWAC than the geopolymer concrete. The shear resistance of OPS LWAC beams was also found to improve with the addition of steel fibres and existing prediction equations for shear capacity of steel fibre-reinforced lightweight concrete was determined to be conservative for the steel fibre-reinforced cement-based and geopolymer OPS LWAC. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：369 / 375
页数：7
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