本文選題：施工現(xiàn)場(chǎng) + SMA配合比��； 參考：《西安工業(yè)大學(xué)》2017年碩士論文

【摘要】：近年,我國車輛數(shù)量的迅速增長(zhǎng),對(duì)路面質(zhì)量的要求也不斷提升,同時(shí)對(duì)高速公路建設(shè)以及公路的壽命也提出了更高的要求。上面層質(zhì)量的好壞對(duì)路面質(zhì)量的好壞有著舉足輕重的作用。路面上面層級(jí)配設(shè)計(jì)、結(jié)構(gòu)選擇及施工控制等方面直接影響著道路的整體性能。本文以杭新景高速第二十二標(biāo)段的實(shí)體工程為依托,以SMA-13配合比設(shè)計(jì)為切入點(diǎn),通過原材料性能試驗(yàn)、礦料配合比計(jì)算、油石比確定等步驟進(jìn)行SMA-13設(shè)計(jì),并對(duì)設(shè)計(jì)結(jié)果各方面的性能進(jìn)行驗(yàn)證。根據(jù)SMA配合比設(shè)計(jì)結(jié)果,通過有差別的成型方式、擊實(shí)次數(shù)進(jìn)行試件成型試驗(yàn),通過對(duì)不同成型方法下集料的特性、瀝青混合料的體積參數(shù)、集料骨架形成情況、集料破碎情況等進(jìn)行對(duì)比分析,并利用抽屜篩分的方法對(duì)集料的破碎情況進(jìn)行精確的數(shù)據(jù)收集,分析馬歇爾不同壓實(shí)功下集料的破碎情況,進(jìn)而對(duì)室內(nèi)成型方式提出建議,同時(shí)通過對(duì)集料破碎情況的研究分析SMA-13的主要承重石料粒徑范圍。由于地理及其他方面因素的影響,浙江地區(qū)高速公路的瀝青混合料普遍采用3mm-5mm的石灰?guī)r代替玄武巖,考慮到石灰?guī)r是堿性集料且SMA規(guī)范中提到,在沒有專用的細(xì)集料破碎機(jī)生產(chǎn)的機(jī)制砂的情況下可以選用普通石灰?guī)r石屑代替以保證集料和瀝青的粘附性。以此出發(fā),結(jié)合工程項(xiàng)目中更具代表性的AC-13C配合比對(duì)石灰?guī)r替換玄武巖(2.36mm-4.75mm)進(jìn)行替換試驗(yàn)。結(jié)果表明在其他性能都滿足規(guī)范要求的情況下,石灰?guī)r替換組具有更好的48小時(shí)浸水馬歇爾穩(wěn)定度和凍融劈裂指標(biāo)。該試驗(yàn)一方面證明了 SMA中2.36mm-4.75mm檔石灰?guī)r替換的可行性,另一方面也為該地區(qū)普遍存在的以2.36-4.75mm石灰?guī)r替換做法提供了一定的依據(jù)。最后,以上述試驗(yàn)結(jié)果為依據(jù),總結(jié)試驗(yàn)段鋪設(shè)的問題,對(duì)SMA-13的現(xiàn)場(chǎng)的機(jī)械設(shè)備、施工工藝提出建議并對(duì)施工過程中出現(xiàn)的問題給出處理措施,同時(shí)通過試驗(yàn)段路段芯樣的各項(xiàng)數(shù)據(jù)與試驗(yàn)室試件得出的數(shù)據(jù)對(duì)比,再次證明較好成型方式的合理性。
[Abstract]:In recent years, with the rapid growth of the number of vehicles in our country, the requirements for the quality of the road surface have been continuously raised, and higher requirements have also been put forward for the construction of highways and the service life of highways. The quality of the top layer plays an important role in the quality of the pavement. The gradation design, structure selection and construction control of pavement surface have a direct impact on the overall performance of the road. In this paper, based on the solid engineering of the 22 section of Hangzhou Xinjing Expressway, the SMA-13 mix proportion design is taken as the breakthrough point, and the SMA-13 design is carried out through the raw material performance test, the calculation of the mixture ratio of the mineral aggregate and the determination of the oil-stone ratio. The performance of the design results is verified. According to the results of SMA mix ratio design, through different molding methods, compaction times to carry out the sample forming test, through the different forming methods of the characteristics of aggregate, asphalt mixture volume parameters, aggregate skeleton formation, The crushing situation of aggregate is compared and analyzed, and the crushing situation of aggregate is collected accurately by the method of drawer sieving, and the crushing situation of aggregate under different compaction work of Marshall is analyzed. At the same time, the particle size range of the main bearing stone SMA-13 is analyzed by studying the crushing condition of aggregate. Due to the influence of geography and other factors, the asphalt mixture of expressway in Zhejiang area generally uses limestone from 3mm-5mm instead of basalt, considering that limestone is alkaline aggregate and mentioned in SMA code. When there is no special fine aggregate crusher to produce the machine-made sand, ordinary limestone debris can be used instead to ensure the adhesion between aggregate and asphalt. Based on this, the replacement test of limestone replacement basalt (2.36mm-4.75mm) is carried out in combination with AC-13C mixture ratio, which is more representative in engineering projects. The results show that the limestone replacement group has a better stability of 48 hours immersion Marshall and a better index of freeze-thaw splitting under the condition that other properties meet the requirements of the specifications. On the one hand, this experiment proves the feasibility of 2.36mm-4.75mm limestone replacement, on the other hand, it provides a basis for the 2.36-4.75mm limestone replacement. Finally, on the basis of the above test results, the problems of laying the test section are summarized, and some suggestions on the field mechanical equipment and construction technology of SMA-13 are put forward, and the treatment measures for the problems in the construction process are given. At the same time, by comparing the data of the core sample of the test section with the data obtained from the laboratory specimen, the rationality of the better molding method is proved again.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U416.2

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本文編號(hào)：2107423