Mechanical Properties of Hybrid Fiber Reinforced Rubber Concrete

Orthogonal experiments were designed for hybrid fiber rubber concrete (HFRC). The mechanical properties of HFRC were tested and compared with ordinary concrete. The effects of basalt fiber volume ratio (VBF), PVA fiber volume ratio (VPF) and rubber volume ratio (VR) on the compressive strength, spli...

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Bibliographic Details
Published in:Materials 2021-10, Vol.14 (20), p.6028
Main Authors: Su, Qiang, Xu, Jin-Ming, Wang, Yong-Dong
Format: Article
Language:English
Subjects:
Aggregates
Basalt
Cellulose
Cement
Compressive strength
Concrete mixing
Experiments
Fiber reinforced concretes
Fiber volume fraction
Flexural strength
Mechanical properties
Quantitative analysis
Raw materials
Rubber
Tensile strength
Test methods
Tires
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Summary:Orthogonal experiments were designed for hybrid fiber rubber concrete (HFRC). The mechanical properties of HFRC were tested and compared with ordinary concrete. The effects of basalt fiber volume ratio (VBF), PVA fiber volume ratio (VPF) and rubber volume ratio (VR) on the compressive strength, splitting tensile strength and flexural strength of HFRC were analyzed. The results show that the strength of HFRC is the best when the volume ratio of basalt fiber is 0.3%, the volume ratio of PVA fiber is 0.2% and the volume ratio of rubber is 5%. Basalt fiber has the greatest influence on the strength of HFRC. The strength of HFRC mixed with hybrid fiber is greatly improved, which reflects the good fiber “positive hybrid effect”. With the increase of rubber volume ratio, the strength of HFRC decreases gradually. With the help of SEM and EDS, the toughening and cracking resistance mechanism of the fiber to HFRC was analyzed. Finally, the strength of HFRC was predicted by model.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14206028