一种保水性路面路用性能的研究

Study on the performance of a water-based pavement

研究了保水性路面混合料的高温稳定性、低温抗裂性、水稳定性等路用性能,并与OGFC路面混合料进行了对比分析;研究了保水性混合料路面的保水性能及降温性能。结果表明:保水性路面混合料的动稳定度比OGFC路面混合料至少高4000次·mm-1,其残留稳定度和冻融劈裂强度比均比OGFC路面混合料大,且其在-10℃时的低温弯拉应变较大、劲度模量较小,拥有较好的高温稳定性、水稳定性以及低温抗裂性能;保水性路面具有较强的保水功能,浸水24 h的保水量为2.8 kg/m 3;保水性路面具有较好的降温效果,比OGFC路面混合料路面降温10℃左右。

The road performance of high temperature stability,low temperature cracking resistance and water stability of water retaining pavement mixture was studied,and co MPared with OGFC pavement mixture.The water holding capacity and cooling performance of water retaining mixture pavement were studied.The results show that the water retentive pavement mixture dynamic stability than OGFC pavement mixture at least 4000 times mm-1,the residual stability and freeze-thaw splitting strength ratio of OGFC pavement mixture,and at-10 DEG C low-temperature bending strain,large stiffness modulus is small,high temperature stability and have a good water stability and low temperature crack resistance;the water retentive pavement has strong function of water retention,water retention and immersion for 24 h 2.8 kg/m 3;the water retentive pavement has better cooling effect,cooling temperature of about 10 than the OGFC pavement mixture pavement.