Effect of weight and drop height of hammer on the flexural impact performance of fiber-reinforced concrete

The drop weight test was usually used to evaluate the impact performance of fiber-reinforced concrete. However, there is no uniform parameters about the weight and the drop height of the hammer in the drop weight test. In this paper, the effect of the weight and the drop height of the hammer on the...

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Bibliographic Details
Published inConstruction & building materials Vol. 140; pp. 31 - 35
Main Authors Zhang, Wuman, Chen, Shuhang, Liu, Yingzhou
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2017
Elsevier B.V
Subjects
Analysis
Drop height
Drop weight
Impact performance
Mechanical properties
Polypropylene fiber concrete
Reinforced concrete
Steel
Steel fiber concrete
United States
Steel fiber concrete
Impact performance
Polypropylene fiber concrete
Drop height
Drop weight
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Summary:The drop weight test was usually used to evaluate the impact performance of fiber-reinforced concrete. However, there is no uniform parameters about the weight and the drop height of the hammer in the drop weight test. In this paper, the effect of the weight and the drop height of the hammer on the impact performance of steel fiber and polypropylene fiber reinforced concrete was studied. The results show that, for both polypropylene fiber and steel fiber reinforced concrete, the initial impact strength (Si) and the final impact strength (Sf) exponentially decrease with the increase of the drop height. Si and Sf increase with the increase of the drop weight when the impact energy is a constant value in each impact test. However, the damage of the polypropylene fiber reinforced concrete is still a brittle fracture at this condition. The addition of steel fiber improves the ductility and impact resistance of concrete.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2017.02.098