Surface treated polypropylene (PP) fibres for reinforced concrete

被引：134

作者：

Lopez-Buendia, Angel M. ^{[1
]}

Dolores Romero-Sanchez, Maria ^{[2
]}

Climent, Veronica ^{[3
]}

Guillem, Celia ^{[2
]}

机构：

[1] AIDICO Technol Inst Construct, Valencia 46380, Spain

[2] AIDICO Technol Inst Construct, Marble Tech Unit, Alicante 03660, Spain

[3] Lafarge Cementos, Poligono Sepes, Valencia 46500, Spain

来源：

CEMENT AND CONCRETE RESEARCH | 2013年 / 54卷

关键词：

Fibre reinforcement; Polypropylene fibre; Adhesion; Microstructure; High-Performance Concrete; PLASTIC SHRINKAGE CRACKING; COMPOSITES; BEHAVIOR; PERFORMANCE; MORPHOLOGY;

D O I：

10.1016/j.cemconres.2013.08.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Surface treatments on a polypropylene (PP) fibre have contributed to the improvement of fibre/concrete adhesion in fibre-reinforced concrete. The treatments to the PP fibre were characterized by contact angle measurements, ATR-IR and XPS to analyse chemical alterations. The surface topography and fibre/concrete interaction were analysed by several microscopic techniques, namely optical petrographic, and scanning electron microscopy. Treatment modified the surface chemistry and topography of the fibre by introducing sodium moieties and created additional fibre surface roughness. Modifications in the fibre surface led to an increase in the adhesion properties between the treated fibres and concrete and an improvement in the mechanical properties of the fibre-reinforced concrete composite as compared to the concrete containing untreated PP fibres. Compatibility with the concrete and increased roughness and mineral surface was also improved by nucleated portlandite and ettringite mineral association anchored on the alkaline PP fibre surface, which is induced during treatment. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：29 / 35

页数：7

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