本文選題：道路工程　切入點：瀝青混合料　出處：《功能材料》2017年04期 　論文類型：期刊論文

【摘要】：將現(xiàn)場取芯的瀝青混合料試件真空飽水后長期放置于靜水中,定期測定試件的吸水率,采用劈裂試驗和凍融劈裂試驗測定試件的劈裂強度和TSR,采用60℃劈裂試驗及無側(cè)限抗壓強度試驗測定粘結力和內(nèi)摩擦角,運用兩種擬合方法對瀝青混合料粘結力和內(nèi)摩擦角變化趨勢進行擬合。結果表明,瀝青混合料試件初期階段吸水率迅速增加,后期水分進入微空隙,吸水率增加緩慢;長期靜水作用下瀝青混合料的劈裂強度和凍融劈裂強度比均下降,前6個月下降速率較大,后期逐漸變慢,前期的下降速率是后期的3~4倍。在長達12個月的靜水作用下,瀝青混合料粘結力下降0.08 MPa,呈線性變化;內(nèi)摩擦角下降10.3°,呈二次拋物線變化。
[Abstract]:The bituminous mixture samples taken from the field were filled with water in vacuum and placed in still water for a long time, and the water absorption rate of the samples was measured periodically. The splitting strength and TSRs of the specimens were measured by splitting test and freeze-thaw splitting test, and the bonding force and internal friction angle were measured by splitting test at 60 鈩，

本文編號：1627624