Mechanical and dynamic properties of coconut fibre reinforced concrete

被引：316

作者：

Ali, Majid ^{[1
]}

Liu, Anthony ^{[1
]}

Sou, Hou ^{[1
]}

Chouw, Nawawi ^{[1
]}

机构：

[1] Univ Auckland, Dept Civil & Environm Engn, Auckland 1142, New Zealand

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 30卷

关键词：

Coconut fibres; Concrete composites; Mechanical and dynamic properties; Beam; NATURAL FIBERS; CEMENT; DURABILITY; COMPOSITES; STRENGTH;

D O I：

10.1016/j.conbuildmat.2011.12.068

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Coconut fibres have the highest toughness amongst natural fibres. They have potential to be used as reinforcement in low-cost concrete structures, especially in tropical earthquake regions. For this purpose, the mechanical and dynamic properties of coconut fibre reinforced concrete (CFRC) members need to be well understood. In this work, in addition to mechanical properties, damping ratio and fundamental frequency of simply supported CFRC beams are determined experimentally. A comparison between the static and dynamic moduli is conducted. The influence of 1%, 2%, 3% and 5% fibre contents by mass of cement and fibre lengths of 2.5, 5 and 7.5 cm is investigated. To evaluate the effect of coconut fibres in improving the properties of concrete, the properties of plain concrete are used as a reference. Damping of CFRC beams increases while their fundamental frequency decreases with structural damage. CFRC with higher fibre content has a higher damping but lower dynamic and static modulus of elasticity. It is found that CFRC with a fibre length of 5 cm and a fibre content of 5% has the best properties. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：814 / 825

页数：12

共 33 条

[1]

Abiola AWBOA, 2008, THESIS BLEKINGE I TE

[2]

Aggarwal LK., 1992, CEMENT CONCRETE COMP, V14, P63

[3] Developments on vegetable fibre-cement based materials in Sao Paulo, Brazil: an overview [J].

Agopyan, V ;

Savastano, H ;

John, VM ;

Cincotto, MA .

CEMENT & CONCRETE COMPOSITES, 2005, 27 (05) :527-536

[4] MECHANICAL CHARACTERIZATION AND IMPACT BEHAVIOR OF CONCRETE REINFORCED WITH NATURAL FIBERS [J].

ALORAIMI, SK ;

SEIBI, AC .

COMPOSITE STRUCTURES, 1995, 32 (1-4) :165-171

[5]

[Anonymous], 2007, INDIAN CONCR J

[6]

[Anonymous], 1976, ENG J SINGAP

[7] Development of coconut coir-based lightweight cement board [J].

Asasutjarit, C. ;

Hirunlabh, J. ;

Khedari, J. ;

Charoenvai, S. ;

Zeghmati, B. ;

Shin, U. Cheul .

CONSTRUCTION AND BUILDING MATERIALS, 2007, 21 (02) :277-288

[8]

Aziz M.A., 1981, Int. J. Cem. Compos. Lightweight Concrete, V3, P123

[9]

Aziz M.A., 1984, NEW REINF CONCR, V1, P106

[10] Toughness of fibre reinforced hydraulic lime mortar. Part-1: Quasi-static response [J].

Chan, Rachel ;

Bindiganavile, Vivek .

MATERIALS AND STRUCTURES, 2010, 43 (10) :1435-1444

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