Preparation and Properties of Natural Bamboo Fiber-Reinforced Recycled Aggregate Concrete

被引：0

作者：

Xu, Binyu ^{[1
]}

Tian, Rongxi ^{[1
]}

Wang, Ying ^{[1
]}

Zhang, Zhen-wen ^{[1
]}

Zhang, Zihua ^{[1
]}

机构：

[1] Ningbo Univ, Sch Civil & Environm Engn & Geog Sci, Ningbo 315211, Peoples R China

来源：

MATERIALS | 2024年 / 17卷 / 12期

关键词：

natural bamboo fiber; recycled concrete; orthogonal experiment; microstructure; STRESS-STRAIN BEHAVIOR; MECHANICAL-PROPERTIES; PERFORMANCE; DURABILITY; MORTAR;

D O I：

10.3390/ma17122972

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To promote resource reuse and the green, low-carbon transformation of the construction industry, this study uses recycled aggregate from crushed waste concrete and natural bamboo fibers to formulate bamboo fiber-reinforced recycled-aggregate concrete. This study investigates the effects of natural bamboo fiber (NBF) content, NBF length, and the water-to-cement ratio on the performance of concrete through an orthogonal experiment to determine the optimal mixing proportions of NBF-reinforced concrete. Additionally, recycled aggregate completely replaced natural aggregate. The mechanism by which NBF influences concrete was also analyzed. The results demonstrate that the NBF-reinforced specimens exhibited good integrity during compression failure, with NBFs effectively tying the concrete together. The optimized parameters for NBF-reinforced concrete were an NBF length of 20 mm, an NBF content of 0.4v%, and a water-to-cement ratio of 0.55. Almost no flaky Ca(OH)2 crystals were observed in the NBF-hardened cement-paste transition zone, indicating effective bonding at the interface.

引用

页数：16

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