【摘要】 在室内运用间断级配、折断级配、连续级配以及限制最小粒径的k法做试验,设计了10种二灰碎石,并研究了其抗裂性能。提出了二灰碎石抗裂性能评价参数S。在2个省铺筑了3条试验路,并进行了跟踪调查。调查结果表明,采用限制最小粒径方法确定的二灰碎石具有后期强度增长快、抗裂性能优良的优点。说明限制最小粒径方法确定的二灰碎石级配具有良好的抗裂性能。更多还原

【Abstract】 By the theory of step-graded, continuous-gradation, gap-gradation, and k-way, 10 kinds lime-fly-ash stone were designed. An anti-cracking-coefficient to judge the character of anti-cracking of lime-fly-ash stone was presented, and 3 test-roads in two provinces were built. The results show that the lime-fly-ash stone designed by the k -way, which limited the minimum diameter of stone, has the higher strength-ratio,good anti-cracking performance.更多还原