摘要
采用静压成型×h=150 mm×150 mm大粒径沥青混合料(LSAM)试件,通过大量的室内试验,研究分析了公称最大粒径分别为37.5 mm和31.5 mm的LSAM回弹模量、无侧限抗压强度、劈裂抗拉强度的力学指标。试验结果表明,LSAM的抗压回弹模量是普通沥青混凝土的1.3倍左右;LSAM的回弹模量、抗压强度和劈裂抗拉强度分别是半刚性材料的2倍左右。
On the basis of the laboratory tests of Ф×h=150mm×150mm specimens of large stone asphalt mixes （LSAM）, which are moulded by static-load machine, the unconfined compressive strength, resilient modulus, splitting-tension strength of the large stone asphalt mixes are studied and analyzed, whose maximum nominal sizes of aggregate are 37. 5 mm/31.5 mm. Results of tests show that the resilient modulus of LSAM is about 1.3 times greater than those of the normal asphalt concretes and the mechanical properties of LSAM are are about 1 times greater than those of the semi-rigid materials.
出处
《公路》
北大核心
2006年第2期157-161,共5页
Highway
关键词
道路工程
大粒径沥青混合料
回弹模量
抗压强度
劈裂抗拉强度
road engineering
large stone asphalt mixes
resilient modulus
compressive strength
splitting-tension strength
