Study on properties of carbon fibre reinforced cement-based grouting materials

Xin-E Yan,G Yang,M Ziegler

doi:10.1051/e3sconf/202019801012

Abstract

As an efficient, eco-friendly and economical solution for connecting precast concrete components, grouted sleeve connectors aroused widespread interest in engineering site. However, as the key material of grouted sleeve connection, grouting material needs to provide enough good performance to meet the engineering requirements. In order to better design the mix proportion of grouting materials, this paper studies the influence of water binder ratio, carbon fibre content, expansion agent addition and other factors on the performance of grouting materials, and optimizes the mixture ratio of grouting materials by analyzing the workability, compressive strength and expansibility, and analyzes the bonding performance of grouting materials by using the half-grouting steel sleeve connector.

Highlights

With the development of building, materials and information technology, many new environmentally friendly structural systems are emerging [1]
The preparation method of reactive powder concrete (RPC) has be used as a prospective grouting material [15], contains Grade 52.5 (Chinese cement grading system) Portland cement made in Shaanxi Province, China; silica fume (SF), quartz powder (QP), quartz sand (QS), a superplasticizer (SP) and chopped carbon fibre (CF) as a substitute for steel fibre
In order to explore the performance of carbon fibre reinforced cement mixture, the cement-based mixture with different mix proportion was studied

Summary

Introduction

With the development of building, materials and information technology, many new environmentally friendly structural systems are emerging [1]. Shannag et al [13] have researched a high performance cement-based grouting material with good fluidity, strength and durability by adding natural pozzolan and silica fume into the grouting material. Based on the flowing time, the results indicated that the finer sand grading had worse flowability than those of the coarser sand grading This shows that in order to obtain better workability, it is necessary to reduce the fine sand content and increase the water to cement ratio.

Methods

Results

Conclusion