The Test Applied Research Of Anti-slide Gradation Of Asphalt Pavement

In recent years, express highway develops at full speed in our country, our country traffic appears out the characteristic of big traffic volume and high running speed , the driving safety problem becoming a cause for concern, the pavement has fine field performance, this is the important prerequisites for ensuring fast,safe,comfortable, especially the anti-skidding performance,the key to anti-skidding performance lies in constructing the anti-skidding surface.This thesis is based on the project of FuJianTongSan freeway modified asphalt pavement, by the lab test to investigate four asphalt pavement with different anti - skidding gradation :AC-13K,AK-13K,Superpave-13 and no fiber SMA-13.By inspecting the raw materials, in the period of lab test and constructing the testing road adopting the shell modified asphalt were decided. The lab test include Marshall stability test,anti-water damage test,rutting test,APA ponding test. Marshall mechanical performance of AC-13K are better than AK-13A,Superpave-13 and no fiber SMA-13 and the rut resistance and the anti-water damage performance are improved.By test road constructing and tracks detecting to estimate actual using condition and field performance of four asphalt mixtures. The length of the test road are 1200m(one side) ,each asphalt mixtures every 300m to construct the test road, detect on the scene and tracks monitoring, it can be seen, in respect of actual using condition and field performance , AC-13K,Superpave-13 and no fiber SMA-13 meet the requirements, but the last two need to increase relative cost ,so AC-13K is the best , AK-13K seep serious , suggest not use it.Take AC-13K for instance, the impact of construction gradation fluctuation and the change of asphalt dosage on the performance of asphalt mixtures are investigated, it also analyse the sensitivity of anti-skidding gradation. Three gradation scheme represent the situation of thick ,middle , slender, ascertain the best gradation by lab test. With the best gradation , at the median of 0.6mm-9.5mm sieve pore deviate 5%-7% make three gradation, and do volumetrical parameter test; under the condition of best gradation invariant, asphalt dosage change 0.5%, determine the volumetrical parameter; investigated the impact of construction gradation fluctuation and the change of asphalt dosage on the performance of asphalt mixtures.