Experimental Investigation of the Technical Performances of SRX-Stabilized Graded Macadam

Autor: Na Xu, Zhongda Chen, Haijun Gao, Dingming Dong, Yongjun Wu, Guanghui Lu, Zhifeng Chen
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Advances in Materials Science and Engineering, Vol 2021 (2021)
Druh dokumentu: article
ISSN: 1687-8434
1687-8442
DOI: 10.1155/2021/9959834
Popis: The technical performances of Solution Road RomixSoilfix- (SRX-) stabilized graded macadam (SSGM) are investigated to promote its application. The specimen curing conditions were proposed to improve the test efficiency by analyzing the influence of curing temperature on the unconfined compressive strength and moisture content variation. Moreover, the mechanical properties (e.g., CBR, strength, and resilient modulus) and pavement performances (e.g., temperature shrinkage, water stability, and freezing stability) of SSGM were evaluated through laboratory tests. The results show that the recommended curing temperature in the drying oven should be 100°C ± 2°C and the recommended curing time should not be less than 16 h. Furthermore, the CBR, unconfined compressive and splitting strengths, and resilient modulus of SSGM increase with the content of SRX stabilizer. The temperature shrinkage coefficient is approximately 15% of the cement-stabilized grading crushed stone. The dry-wet recovery strength ratio is approximately 96% after four dry-wet cycles. The freeze-thaw recovery strength ratio is approximately 58% after five freeze-thaw cycles. The freezing stability of SSGM can be improved by increasing the content of SRX stabilizer. The technical performances of SSGM should fulfill the technical requirements.
Databáze: Directory of Open Access Journals
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