本文關(guān)鍵詞： 道路工程 路面質(zhì)量 下雨施工 劈裂回彈模量 體積參數(shù)　出處：《重慶交通大學(xué)學(xué)報(自然科學(xué)版)》2017年11期 　論文類型：期刊論文

【摘要】：室內(nèi)成型2組試件(經(jīng)歷和未經(jīng)歷短期老化)、路面鉆取2組芯樣(正常施工、遇雨施工),對4組試件的體積參數(shù)和劈裂回彈模量(5個溫度水平、6個頻率水平)進行檢測,采用時-溫等效原理生成AC-20混合料劈裂回彈模量主曲線,并對4組試件20℃主曲線進行對比分析。研究表明,采用室內(nèi)短期加速老化試驗?zāi)M拌和樓加熱拌和過程對瀝青的老化是可行的;隨著加載頻率的增大,混合料劈裂回彈模量對加載頻率的敏感性和依賴性降低;瀝青混合料施工過程突遇下雨天氣,體積參數(shù)雖能夠滿足規(guī)范要求,但混合料劈裂回彈模量大幅降低,力學(xué)性能下降;由劈裂回彈模量西格摩德模型知,混合料劈裂回彈模量(20℃溫度,10 Hz加載頻率)降低42.5%。建議,對于瀝青混合料施工過程應(yīng)密切關(guān)注天氣變化,及時調(diào)整拌和樓生產(chǎn)狀態(tài),突遇下雨工況保證立即停止施工。
[Abstract]:Two groups of specimens (experienced and not experienced short term aging), 2 groups of core samples were drilled (normal construction, rainstorm construction), and the volume parameters and modulus of splitting resilience (5 temperature levels) of 4 groups of specimens were obtained. Six frequency levels) were used to test, and the principal curve of splitting resilience modulus of AC-20 mixture was generated by the principle of time-temperature equivalence, and the main curve of 20 鈩，

本文編號：1474166