摘要
加州承载比CBR(CaliforniaBearingRatio)是国际上普遍认同在公路工程中广泛使用的一个性能指标,它是评价路基土强度和稳定性的主要依据之一.虽然压实度和CBR强度均被用作为衡量路基土的性能的指标,但两者之间的对应关系尚待探讨.通过对制样方法的改进,制作了五种不同预定压实度的CBR试件并测试其CBR强度值,求得了路基土的CBR强度和压实度之间的关系,并得出了关于路基土的各项性能与压实度之间关系的有价值的结论.
California Bearing Ratio (CBR) has been commonly accepted and used as an indication of resistance and stability of subgrade all over the world. Although CBR and degree of compaction are both used as the indication of resistance of subgrade, the relationship between the two still requires further investigation. The formula showing the relationship between the CBR strength and degree of compaction of subgrade soil is obtained through an improved experiment method, in which soil samples with five predetermined degrees of compaction are produced and their CBR strengths are tested. Also some useful conclusions are obtained regarding the relationship between the swelling characteristic of subgrade soil and degree of compaction, which can serve as reference for road engineers.
出处
《华中科技大学学报（城市科学版）》
CAS
2005年第B05期109-111,115,共4页
Journal of Huazhong University of Science and Technology
关键词
路基土
液限
塑限
压实度
CBR强度
subgrade soil
liquid limit
plastic limit
degree of compaction
CBR strength
