Bending behaviour of novel Textile Reinforced Concrete-foamed concrete (TRC-FC) sandwich elements

被引：71

作者：

Portal, Natalie Williams ^{[1
]}

Flansbjer, Mathias ^{[2
]}

Zandi, Kamyab ^{[1
]}

Wlasak, Lech ^{[3
]}

Malaga, Katarina ^{[1
]}

机构：

[1] CBI Swedish Cement & Concrete Res Inst, Boras, Sweden

[2] SP Tech Res Inst Sweden, Boras, Sweden

[3] Mostostal Warszawa SA, Warsaw, Poland

来源：

COMPOSITE STRUCTURES | 2017年 / 177卷

关键词：

Textile Reinforced Concrete (TRC); Foam concrete (FC); Sandwich elements; Four-point bending test; Finite element analysis (FEA);

D O I：

10.1016/j.compstruct.2017.06.051

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A novel sandwich element design consisting of two facings made of carbon reinforced Textile Reinforced Concrete (TRC), a low density foamed concrete (FC) core and glass fibre reinforced polymer (GFRP) connecting devices was experimentally investigated according to quasi-static and cyclic quasi-static four-point bending. Optical measurements based on Digital. Image Correlation (DIC) were taken during testing to enable a detailed analysis of the bending behaviour and level of composite action. A model, verified by the experiments, was developed based on non-linear finite element analysis (NLFEA) to gain further insight on the failure mechanisms. Under both loading conditions, the bending behaviour of the TRC-FC composite elements was characterized by favourable load bearing capacity, partial composite action, superior ductility and multiple fine cracking. The connecting devices were found to be the critical elements causing the initial failure mechanism in the form of localized pull-out within an element. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：104 / 118

页数：15

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