Mechanical Properties of Calcium Carbonate Whisker Hybrid Polyethylene Fiber Reinforced Cement-Based Composite

Abstract

Abstract: In order to study the influence of calcium carbonate whisker with different content on the mechanical properties and microstructure of polyethylene fiber reinforced cement-based composite(PE-ECC), four groups of PE-ECC specimens with different content of calcium carbonate whisker were designed, and the compressive properties, tensile properties and three-point bending fracture properties were tested on them. The microstructure was studied by XRD, SEM and NMR. The results show that calcium carbonate whisker can strengthen and toughen PE-ECC. With the increase of calcium carbonate whisker content, the strengthening and toughening effects first increase and then decrease. When the content of calcium carbonate whisker is 1% (volume fraction), the compressive properties, tensile properties and fracture properties of PE-ECC are improved best. Appropriate amount of calcium carbonate whisker can fill the matrix, reduce the number of less and more damaged pores, and improve pore structure.

Key words: cement-based composite, calcium carbonate whisker, PE fiber, tensile property, fracture property, microstructure

CLC Number:

TU528

CHEN Yueshun, TANG Chengyu. Mechanical Properties of Calcium Carbonate Whisker Hybrid Polyethylene Fiber Reinforced Cement-Based Composite[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(1): 16-26.

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