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首页> 外文会议>RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT) >TOUGHNESS CHARACTERISTICS OF PALM FIBRE CONCRETE
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TOUGHNESS CHARACTERISTICS OF PALM FIBRE CONCRETE

机译：棕榈纤维混凝土的韧性特征

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摘要

This paper reports the results of an investigation on the toughness characteristics of concrete containing Ijuk fibre. Three fibre lengths of 15mm, 25mm, and 35mm were used in four volume fractions i.e. 0.2%, 0.4%, 0.6% and 0.8%. The values of toughness, first crack deflection, first crack toughness and toughness indices are presented for ages up to 90 days. It was observed that the addition of palm fibre increased the toughness charateristic of concrete. However it was observed that the positive effects of the fibre becomes less significant after 28 days, but still sufficient to give the concrete better toughness properties compared to the plain concrete. This is due to the reaction of the fibres with the alkaline pore water in the cement matrix.
机译：本文报告了对含Ijuk纤维的混凝土的韧性特性进行调查的结果。以四个体积分数，即0.2％，0.4％，0.6％和0.8％使用三种长度为15mm，25mm和35mm的纤维。给出了长达90天的使用期限的韧性，初次裂纹挠度，初次裂纹韧性和韧性指数的值。观察到棕榈纤维的添加增加了混凝土的韧性。但是，观察到，纤维的积极作用在28天后变得不那么明显，但与普通混凝土相比，仍足以使混凝土具有更好的韧性。这是由于纤维与水泥基体中的碱性孔隙水反应。

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