Influence of steel fibers on the mechanical properties and impact resistance of lightweight geopolymer concrete

被引：105

作者：

Islam, Azizul ^{[1
]}

Alengaram, U. Johnson ^{[1
]}

Jumaat, Mohd Zamin ^{[1
]}

Ghazali, Nurasyiqin Binti ^{[1
]}

Yusoff, Sumiani ^{[1
]}

Bashar, Iftekhair Ibnul ^{[1
]}

机构：

[1] Univ Malaya, CICT, Dept Civil Engn, Fac Engn, Kuala Lumpur 50603, Malaysia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 152卷

关键词：

Fiber-reinforced lightweight geopolymer concrete; Drop hammer impact; Impact energy; Crack growth resistance; Mechanical properties; Oil palm shell; PALM SHELL CONCRETE; OIL FUEL ASH; ENGINEERING PROPERTIES; REINFORCED CONCRETE; HYBRID FIBERS; STRENGTH; PERFORMANCE; BEHAVIOR; SLAG; POLYPROPYLENE;

D O I：

10.1016/j.conbuildmat.2017.06.092

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of fiber on the mechanical properties and impact resistance of oil palm shell geopolymer concrete (OPSGPC) prepared with ground granulated blast-furnace slag (GGBS) and palm oil fuel ash (POFA) as binders is reported. The mechanical properties of OPSGPC, namely compressive, flexural, splitting tensile strengths, and modulus of elasticity were investigated; impact resistance was found through drop hammer test. The addition of 0.5% steel fibers enhanced the splitting tensile and flexural strengths of fiber reinforced OPSGPC (FROPSGPC) by about 19-38% and 13-44%, respectively compared to the non fibrous OPSGPC. The FROPSGPC with uncrushed OPS developed higher initial and final impact resistance compared to specimens with crushed OPS. With the addition of 0.5% steel fiber, the first crack load of the geopolymer concrete increased by 1.5-3.5 times compared to the corresponding mixes of OPSGPC without fiber. The ultimate impact energy of most of the OPSGPC and FROPSGPC with uncrushed OPS was found 15-152% higher compared to the corresponding mixes with the crushed OPS aggregate. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：964 / 977

页数：14

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