Static and cyclic performance of cementitious composites reinforced with glass-fibres

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Materiales de Construccion Pub Date : 2018-03-05 DOI:10.3989/MC.2018.10216

N. Arabi

引用次数: 3

Abstract

This paper concerns an experimental study of the influence of short glass-fibres randomly oriented of a reinforced cement-based composite on the mechanical behaviour. The matrix material parameters used are: cement/sand ratio and water/cement ratio fixed at 0.5; the glass-fibre content (0%, 0.5%, 1.0%, 1.5%, 2% and 2.5%) and fibre lengths (3, 6 and 12 mm). Composites mechanical characterisation under static behaviour at flexural and compression tests, shows that the reinforcement effect is beneficial only in flexural case. A synergy (matrix-reinforcement) was observed when fibre length of 12 mm is used with application rate of 2% in flexural. The fatigue behaviour determined by Wohler plots (stress-number of cycles to rupture), derived from experimental results; showed a large results dispersion which is attributed to many causes initiating this damage. The cyclic tests illustrate brittle character of these materials; even with low-amplitude cycles of loading no adaptation of these materials can be reported.

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玻璃纤维增强胶凝复合材料的静态和循环性能

本文研究了随机取向短玻璃纤维对增强水泥基复合材料力学性能的影响。采用的基质材料参数为:水泥/砂比、水/水泥比固定为0.5;玻璃纤维含量(0%、0.5%、1.0%、1.5%、2%和2.5%)和纤维长度(3,6和12mm)。复合材料在弯曲和压缩静态性能下的力学特性表明，只有在弯曲情况下，增强效应是有益的。当纤维长度为12毫米，弯曲应用率为2%时，观察到协同作用(基质增强)。由Wohler图(从循环到破裂的应力数)确定的疲劳行为，来源于实验结果;显示了一个大的结果分散，这是由于许多原因引起的伤害。循环试验说明了这些材料的脆性特性;即使在低振幅的加载循环中，也没有报道这些材料的适应性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materiales de Construccion 工程技术-材料科学：综合

CiteScore

3.20

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： Materiales de Construcción is a quarterly, scientific Journal published in English, intended for researchers, plant technicians and other professionals engaged in the area of Construction, Materials Science and Technology. Scientific articles focus mainly on: - Physics and chemistry of the formation of cement and other binders. - Cement and concrete. Components (aggregate, admixtures, additions and similar). Behaviour and properties. - Durability and corrosion of other construction materials. - Restoration and conservation of the materials in heritage monuments. - Weathering and the deterioration of construction materials. - Use of industrial waste and by-products in construction. - Manufacture and properties of other construction materials, such as: gypsum/plaster, lime%2