本文選題：自流平水泥灌孔瀝青碎石　切入點(diǎn)：路用性能　出處：《重慶交通大學(xué)》2015年碩士論文

【摘要】：本文主要研究了自流平水泥灌孔瀝青碎石復(fù)合材料的制備成型,確定了母體瀝青碎石的級配及油石比,并且研究了自流平水泥漿的性能并對其改性,得到了其流動度,抗壓拉強(qiáng)度及收縮率指標(biāo)。復(fù)合材料成型后研究其高溫穩(wěn)定性,低溫穩(wěn)定性及水穩(wěn)性這三大路用性能指標(biāo),并與灌入普通水泥漿瀝青碎石復(fù)合材料做對比,然后研究了復(fù)合材料抗壓強(qiáng)度抗彎拉強(qiáng)度隨齡期變化規(guī)律,測定了其抗壓回彈模量及劈裂強(qiáng)度,為路面結(jié)構(gòu)組合設(shè)計提供了參數(shù)依據(jù)。擬定兩種路面結(jié)構(gòu)組合形式,通過路面結(jié)構(gòu)行為評價兩種結(jié)構(gòu)組合(自流平水泥灌孔瀝青碎石復(fù)合材料分別做上面層和下面層)的優(yōu)劣。最后得出以下研究內(nèi)容及結(jié)論:在參考國內(nèi)外文獻(xiàn)及書籍確定了母體混合料礦料級配為單一粒徑的碎石,粒徑范圍分別為9.5-13.2mm和16-19mm。進(jìn)行肯塔堡飛散試驗并且在馬歇爾試驗測定穩(wěn)定度的基礎(chǔ)上確定了母體瀝青碎石最佳油石比分別為2.0%和1.8%。參考師兄論文定出灌漿用普通水泥水灰比及膨脹劑減水劑摻量并與本文研究自流平水泥凈漿對比,得出流動度及抗壓抗拉強(qiáng)度,和干燥開裂試驗收縮率。半柔性路面復(fù)合材料車轍試驗動穩(wěn)定度都在10000次/mm以上,要遠(yuǎn)遠(yuǎn)高于普通AC-13密集配瀝青混凝土1054次/mm;灌自流平水泥漿所得復(fù)合材料的動穩(wěn)定度I型灌自流平水泥凈漿比灌水灰比0.46普通凈漿高接近70%。低溫穩(wěn)定性能按應(yīng)變能密度這一指標(biāo)比較順序:自流平水泥瀝青碎石AC-13混合料普通水泥瀝青碎石。自流平水泥灌漿瀝青碎石浸水前后穩(wěn)定度都要高于水灰比0.46普通水泥灌漿瀝青碎石,水泥灌漿瀝青碎石的水穩(wěn)定性能(即殘留穩(wěn)定度)與灌入水泥漿的程度有很大關(guān)系,與殘留穩(wěn)定度關(guān)系不大。自流平水泥灌孔瀝青碎石抗壓回彈模量大于普通水泥抗壓回彈模量,但仍在瀝青混合料設(shè)計參數(shù)范圍內(nèi)。試驗測得的抗壓回彈模量和劈裂強(qiáng)度為半柔性路面結(jié)構(gòu)組合設(shè)計提供了參數(shù)依據(jù)。
[Abstract]:In this paper, the preparation and molding of self-leveling cement filled hole asphalt macadam composites are studied, the gradation and oil stone ratio of parent asphalt macadam are determined, and the properties of self-leveling cement slurry are studied and modified, and the fluidity of self-leveling cement slurry is obtained.Compressive tensile strength and shrinkage index.After molding, the three main road performance indexes, namely, high temperature stability, low temperature stability and water stability, were studied, and compared with the composite materials filled with ordinary cement slurry asphalt macadam.Then, the variation of compressive strength and flexural tensile strength with age is studied, and the compressive resilience modulus and splitting strength are measured, which provides the parameter basis for pavement structure combination design.In this paper, two kinds of pavement structure combinations are proposed, and the advantages and disadvantages of the two structures are evaluated by the pavement structure behavior (the self-leveling cement filled hole asphalt macadam composite material is used as the upper layer and the lower layer respectively).Finally, the following research contents and conclusions are obtained: referring to the domestic and foreign literature and books, the gradation of the matrix mixture mineral aggregate is determined as a single particle size crushed stone, the particle size ranges from 9.5-13.2mm to 16-19mm.Based on the stability determined by Marshall test, the optimum ratio of asphalt macadam to stone was determined to be 2.0% and 1.8%, respectively.The water cement ratio of ordinary cement for grouting and the amount of water reducing agent for expansion agent are determined with reference to the paper. The flow degree, compressive and tensile strength and shrinkage rate of dry cracking test are obtained by comparing with the study of self-leveling cement paste in this paper.The dynamic stability of semi-flexible pavement composite rutting test is above 10000 times / mm.The dynamic stability of type I self-leveling cement paste is 1054 times higher than that of irrigated cement paste.The stability at low temperature is in the order of strain energy density: Self-leveling cement asphalt macadam AC-13 mixture ordinary cement asphalt macadam.The stability of self-leveling cement grouting asphalt macadam before and after soaking is higher than that of ordinary cement grouting asphalt macadam with water-cement ratio 0.46. The water stability (i.e. residual stability) of cement grouting asphalt macadam is related to the degree of cement slurry pouring.There is little relation between residual stability and residual stability.The compressive resilience modulus of self-leveling cement filled hole asphalt macadam is higher than that of ordinary cement, but it is still within the range of asphalt mixture design parameters.The compressive resilience modulus and splitting strength obtained from the test provide a parameter basis for the structural combination design of semi-flexible pavement.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U414

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本文編號：1719250