Study on pavement performance of hma mix ' s aggregate gradations near restricted zone 瀝青混合料禁區(qū)路用性能研究
Firstly , aggregate particles of various sizes were generated for a given aggregate gradation curve and aggregate area fraction 首先,按照骨料級(jí)配曲線和面積百分比,生成各種尺寸的骨料顆粒。
Extraction tests were conducted on asphalt concrete specimens sampled from field roads . asphalt concrete and aggregate gradation were compared to design and acceptance specifications 對(duì)實(shí)際路面取樣進(jìn)行了抽提試驗(yàn)并與規(guī)范進(jìn)行了比較分析。
The paper has put forward and testified four utilizable aggregate gradation . because the method of preparing samples has certain effect on material property parameter of mixture , the paper recommend static preparing method be adopted 試件成型方法對(duì)大孔隙水泥穩(wěn)定碎石混合料的材料性能參數(shù)有一定的影響,本文推薦室內(nèi)試件成型方法為靜壓成型。
Research results indicate that aggregate gradation extracted from field samples are out of gradation bounds specified in the design file , which can be one of the contributing factors in the development of pavement distress , especially premature failure 研究結(jié)果表面瀝青混合料的級(jí)配超出設(shè)計(jì)范圍可能是影響路面長期性能并呈現(xiàn)早期破壞的原因之一。