Effect of Polypropylene Fiber on the Strength and Dry Cracking of Mortar with Coal Gangue Aggregate | Zendy

Kai Zhu | Zendy; Xianwei Ma | Zendy; Yao Li-yang | Zendy; Linlin Zhao | Zendy; Chuangdan Luo | Zendy

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Effect of Polypropylene Fiber on the Strength and Dry Cracking of Mortar with Coal Gangue Aggregate

Author(s) -

Kai Zhu,

Xianwei Ma,

Yao Li-yang,

Linlin Zhao,

Chuangdan Luo

Publication year - 2021

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2021/6667851

Subject(s) - materials science , shrinkage , mortar , composite material , aggregate (composite) , fiber , cracking , polypropylene , absorption of water , compressive strength , flexural strength

Fine coal gangue aggregate (CGA) has a high water absorption, which increases the cracking risk of mortar caused by dry shrinkage. The effects of polypropylene (PP) fiber on the fluidity, strength, dry shrinkage, and cracking of CGA mortar were studied in this paper. The results show that PP fiber reduces the fluidity of CGA mortar, but PP fiber improves compressive and flexural strengths, especially at the early stages. PP fiber also effectively decreases dry shrinkage and the risk of cracking. Overall, PP fiber can effectively improve the properties of CGA mortar.

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