Effect of Basalt Fiber on Strength of Cement‑Stabilized Macadam Base

Authors

SHU Hongbo, Faculty of Civil Engineering and Architecture , Kunming University of Science and Technology , Kunming ,Yunnan 650500，ChinaFollow
TANG Zhengguang, Faculty of Civil Engineering and Architecture , Kunming University of Science and Technology , Kunming ,Yunnan 650500，ChinaFollow
ZHANG Yanhong, Yunnan Branch ， Anhui Transportation Planning and Design Research Institute Co ., Ltd., Kunming ,Yunnan 650032， China
BU Xilian, Yunnan Branch ， Chuanghuida Design Co ., Ltd., Kunming ,Yunnan 650000 , China
LIANG Dong, Yunnan Branch ， Chuanghuida Design Co ., Ltd., Kunming ,Yunnan 650000 , China

Corresponding Author

唐正光，男，博士，副教授.E-mail：895667713@qq.com

Abstract

To study the performance of basalt fiber in improving the poor angularity of the crushed cobble base，based on the orthogonal test，this paper determined that the optimal dosage of basalt fiber in the cement-stabilized crushed cobble was 1 kg/m3 （15 mm） + 2 kg/m3 （25 mm）.Besides，unconfined compressive strength and splitting strength tests were carried out on mixtures under three working conditions including the cement-stabilized crushed cobble，cement-stabilized crushed cobble with the optimal dosage of basalt fiber，and cement-stabilized macadam （limestone machine-crushed stone ）.The results show that influenced by the aggregate angularity，the strength of the cement-stabilized macadam （limestone machine-crushed stone ） mixture is better than that of the cement-stabilized crushed cobble mixture.For the cement-stabilized crushed cobble with the optimal dosage of basalt fiber，with the increase in curing age，its strength increases rapidly.Compared with the cement-stabilized crushed cobble without a dosage of fiber，its compressive strength is decreased by 0.08% on the seventh day and increased by 3.9%，17.1%，and 28.3% on the fourteenth day，the twenty-eighth day，and the sixtieth day respectively，and its splitting strength is increased by 4.3%，10.2%，19.0%，and 28.7% on the seventh day，the fourteenth day，the twenty-eighth day，and the sixtieth day，respectively.On the forty-fifth day，the strength of the cement-stabilized crushed cobble with a dosage of fiber reaches the strength of the cement-stabilized macadam （limestone machine-crushed stone ）.

Publication Date

10-28-2024

DOI

10.14048/j.issn.1671-2579.2024.05.013

First Page

125

Last Page

131

Submission Date

February 2025

Recommended Citation

Hongbo, SHU; Zhengguang, TANG; Yanhong, ZHANG; Xilian, BU; and Dong, LIANG (2024) "Effect of Basalt Fiber on Strength of Cement‑Stabilized Macadam Base," Journal of China & Foreign Highway: Vol. 44: Iss. 5, Article 13.
DOI: 10.14048/j.issn.1671-2579.2024.05.013
Available at: https://zwgl1980.csust.edu.cn/journal/vol44/iss5/13

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