【摘要】：常溫拌和瀝青混合料作為一種“綠色”材料,是一種新型的瀝青路面材料。由于熱拌、溫拌技術(shù)耗能高、污染重,以及現(xiàn)有冷拌料價(jià)格高、性能指標(biāo)差等問題的存在,造成冷拌料不能作為結(jié)構(gòu)層用于面層。因此,本文針對(duì)這些問題,對(duì)常溫拌和瀝青混合料進(jìn)行研究,主要從混合料的結(jié)合料的開發(fā)及評(píng)價(jià)、混合料配比設(shè)計(jì)、性能改善、養(yǎng)生方式的選擇分析、不同養(yǎng)生方式下路用性能的對(duì)比分析、以及動(dòng)、靜態(tài)模量以及疲勞性能等方面展開研究。本文以瀝青與礦料的拌和、裹附狀態(tài)和混合料的性能驗(yàn)證為開發(fā)判據(jù),研究開發(fā)能夠作為結(jié)構(gòu)層使用的冷拌瀝青,并提出冷拌瀝青及其混合料的技術(shù)要求�；陂_發(fā)的SBS改性乳化瀝青、溶劑型瀝青,本文選擇AC-13和OGFC-13兩種混合料級(jí)配類型,依據(jù)冷拌料成型的方法,參照熱拌改性瀝青混合料的技術(shù)指標(biāo),分別對(duì)乳化瀝青(AC-13、OGFC-13)混合料和溶劑瀝青(AC-13、OGFC-13)混合料的各項(xiàng)性能進(jìn)行研究,并對(duì)不能滿足要求的混合料的提出相應(yīng)的改善方法。在養(yǎng)生方面,本文以養(yǎng)生后混合料的性能與室外養(yǎng)生的性能接近值為選擇判據(jù),來確定模擬室外養(yǎng)生的最佳方式。通過對(duì)室內(nèi)養(yǎng)生、室外養(yǎng)生以及烘箱養(yǎng)生的研究,確立以混合料的質(zhì)量變化、失水率、溶劑揮發(fā)率、以及馬歇爾穩(wěn)定度為指標(biāo)來評(píng)價(jià)常溫拌和瀝青混合料室內(nèi)、外養(yǎng)生和烘箱養(yǎng)生的效果。通過對(duì)混合料室內(nèi)養(yǎng)生7天、室外養(yǎng)生7天以及烘箱養(yǎng)生(60℃48h、90℃24h、110℃24h)混合料質(zhì)量變化、失水率、溶劑揮發(fā)率、以及馬歇爾強(qiáng)度對(duì)比分析,確定出能夠模擬室外養(yǎng)生的最佳的快速養(yǎng)生方式。本文采用烘箱快速養(yǎng)生的方法來最大限度地模擬混合料室外養(yǎng)生7d的效果。以熱拌改性混合料的性能指標(biāo)為評(píng)判依據(jù),通過對(duì)室外養(yǎng)生7d、60℃養(yǎng)生48h、90℃養(yǎng)生24h、110℃養(yǎng)生24h等不同養(yǎng)生條件下的路用性能來驗(yàn)證養(yǎng)生的效果,對(duì)比分析AC-13、OGFC-13的路用性能是否滿足熱拌改性混合料的要求。本文在參考熱拌瀝青混合料動(dòng)、靜態(tài)模量以及疲勞性能的試驗(yàn)方法的基礎(chǔ)上,對(duì)在90℃養(yǎng)生24h條件下的常溫拌和瀝青混合料的靜態(tài)、動(dòng)態(tài)模量以及疲勞性能進(jìn)行研究。通過對(duì)混合料的靜態(tài)、動(dòng)態(tài)模量以及疲勞性能的研究,能夠全面準(zhǔn)確的評(píng)價(jià)混合料的力學(xué)性能,同時(shí)也為常溫拌和瀝青混合料作為路面結(jié)構(gòu)層的設(shè)計(jì)提供參考。
[Abstract]:As a green material, mixing asphalt mixture at room temperature is a new kind of asphalt pavement material. Due to the problems of high energy consumption, heavy pollution, high price and poor performance of existing cold mix materials, cold mix materials can not be used as structural layer for surface layer because of the high energy consumption and heavy pollution of hot mixing and warm mixing technology. Therefore, aiming at these problems, this paper studies asphalt mixture at room temperature, mainly from the development and evaluation of mixture binder, mixture mix design, performance improvement, selection and analysis of health maintenance mode. The contrastive analysis of road performance, dynamic, static modulus and fatigue performance were carried out in different ways. In this paper, the mixing of asphalt and mineral aggregate, the binding state and the performance verification of the mixture are taken as the development criteria, the cold mix asphalt which can be used as the structure layer is researched and developed, and the technical requirements of the cold mix asphalt and its mixture are put forward. Based on the developed SBS modified emulsified asphalt and solvent asphalt, this paper selects two gradation types of AC-13 and OGFC-13 mixture, according to the method of cold mix forming, referring to the technical index of hot mixed modified asphalt mixture. The performances of emulsified asphalt (AC-13,OGFC-13) mixture and solvent asphalt (AC-13,OGFC-13) mixture were studied, and the corresponding improvement methods were put forward for the mixture which could not meet the requirements. In the aspect of health preservation, the best way to simulate outdoor health is determined by the selection criterion of the performance of mixture after curing and the performance of outdoor health. Through the study of indoor, outdoor and oven health preservation, it is established that the mixture quality change, water loss rate, solvent volatilization rate and Marshall stability are used as indicators to evaluate the indoor mixing of asphalt mixture at room temperature. The effect of external health preservation and oven health preservation. The mixture quality changes, water loss rate, solvent volatilization rate and Marshall strength were compared with each other for 7 days, 7 days for indoor, 7 days for outdoor health, and 60 鈩，

本文編號(hào)：2300624