本文關(guān)鍵詞：建筑垃圾作為基層材料的輕交通量公路路面結(jié)構(gòu)研究　出處：《西南科技大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 建筑垃圾 輕交通量公路 基層 無側(cè)限抗壓強度 抗壓回彈模量

【摘要】：隨著城市建設(shè)的發(fā)展,大批舊建筑物被拆除,將產(chǎn)生大量的建筑垃圾,如何實現(xiàn)廢棄資源的再利用,降低環(huán)境負荷,是我國環(huán)境保護和可持續(xù)發(fā)展的目標(biāo)之一,也對構(gòu)建和諧社會有很大的現(xiàn)實意義。因此本文的研究是將建筑垃圾應(yīng)用到鄉(xiāng)村公路、人行道、住宅小區(qū)道路等輕交通量公路工程路面基層上,不僅滿足道路工程的質(zhì)量要求,降低城市的建筑垃圾排放量,而且降低建筑垃圾對環(huán)境的污染,節(jié)約道路材料,降低工程費用,有利于社會經(jīng)濟的可持續(xù)性發(fā)展,具有重大的經(jīng)濟和社會效益。本文采用了室內(nèi)試驗和理論分析的兩種方法對建筑垃圾的基本特性、建筑垃圾集料配合比、水泥穩(wěn)定建筑垃圾混合料配合比、水泥穩(wěn)定建筑垃圾力學(xué)性能以及基層厚度進行了比較系統(tǒng)的研究,研究成果為建筑垃圾在輕交通量公路基層的應(yīng)用提供了理論依據(jù)和參考。主要研究內(nèi)容和成果如下:(1)本文對建筑垃圾原材料物理力學(xué)性能以及破碎后的建筑垃圾基本特性進行了研究,得出建筑垃圾混凝土的集料壓碎值小于30,滿足《公路路面基層施工技術(shù)規(guī)范》(JTJ034—2000)規(guī)定的基層集料的壓碎值不大于35%,而破碎后的廢棄磚集料壓碎值大于35%不滿足要求,作為基層材料時需加入碎石或者建筑垃圾混凝土。(2)本文對建筑垃圾集料配合比進行了研究,通過對不同配合比的建筑垃圾集料進行了壓碎值的測試得到廢棄混凝土、廢棄磚、少量碎石的適當(dāng)?shù)呐浜媳确秶５谝环N:100%的廢棄混凝土。第二種:廢棄混凝土與廢棄磚的比例為90:10。第三種:廢棄混凝土:廢棄磚:碎石的量為10:80:10,壓碎值即可達到35%,滿足規(guī)范要求。若要用到更高等級的道路中可以摻入更多的碎石。第四種:廢棄磚與天然碎石的配比為90:10時,壓碎值達到35%,即可滿足規(guī)范要求。當(dāng)廢棄磚含量更高時,添加更多的碎石即可滿足壓碎值的要求。(3)對水泥穩(wěn)定建筑垃圾混合料進行配合比設(shè)計進行了研究,通過擊實試驗和7d無側(cè)限抗壓強度試驗在理論上證實了將建筑垃圾集料應(yīng)用于輕交通量公路基層的這種思路是可行的,并且通過實驗得到了水泥穩(wěn)定建筑垃圾集料的配合比方案,本試驗研究為推廣建筑垃圾集料應(yīng)用于輕交通量公路基層的起到了重要作用。(4)為了更好的評價建筑垃圾集料基層體系,為建筑垃圾集料在輕交通量公路路上的應(yīng)用提供參考,對水泥穩(wěn)定建筑垃圾力學(xué)性能進行了研究,討論了多種因素對再生集料基層的影響,即不同水泥劑量、不同建筑垃圾集料種類、不同水泥強度對7d無側(cè)限抗壓強度的影響,以及無側(cè)限抗壓強度、間接抗拉強度、抗壓回彈模量等長期力學(xué)性能隨齡期的變化。得出四類建筑垃圾混合料,相同齡期下,不同水泥劑量的線性回歸系數(shù)都在0.9以上,這說明四種建筑垃圾混合料的無側(cè)限抗壓強度、間接抗拉強度、抗壓回彈模量性能都穩(wěn)定,并且與水泥劑量呈線性關(guān)系。(5)本文對建筑垃圾作為輕交通量公路路面基層材料的基層厚度進行了計算研究,得出針對本文的輕交通量公路路面結(jié)構(gòu),推薦的水泥穩(wěn)定建筑垃圾集料基層的厚度范圍均為220mm~350mm。
[Abstract]:With the development of urban construction, a large number of old buildings will be demolished. A lot of construction waste will be generated. How to realize the reuse of waste resources and reduce environmental load is one of the goals of environmental protection and sustainable development in China, and also has great practical significance for building a harmonious society. Therefore this research is applied to rural highway construction waste, sidewalks, residential road light traffic highway pavement, not only meet the requirements of road engineering quality, reduce the amount of construction waste emissions of the city, and reduce construction waste pollution to the environment, saving road material, reduce the cost of the project, is conducive to sustainable the development of social economy, has great economic and social benefits. This paper adopts two methods of indoor experiment and theoretical analysis of the basic characteristics of the construction waste, construction waste aggregate ratio, cement stabilized construction waste mixture was systematically studied on cement stabilized construction waste ratio, mechanical properties and base thickness, the research for the application of construction waste in light traffic highway base to provide a theoretical basis and reference. The main research contents and results are as follows: (1) the basic characteristics of raw materials and mechanical properties after the break of the construction waste of construction waste was studied, the construction waste concrete aggregate crushing value is less than 30, to meet the "highway pavement construction technical specification" (JTJ034 - 2000) the provisions of the basic aggregate crushing the value is not greater than 35%, and the crushed waste brick aggregate crushing value greater than 35% does not meet the requirements as the base material without adding gravel or construction waste concrete. (2) in this paper, the mixture ratio of construction waste aggregate was studied, and the appropriate mix proportion of waste concrete, waste brick and a small amount of gravel was obtained through crushing value test of different construction materials. The first: 100% of the waste concrete. Second kinds: the proportion of waste concrete and abandoned brick is 90:10. Third kinds: Waste Concrete: waste brick: the amount of crushed stone is 10:80:10, and the crushed value can reach 35%, which meets the requirements of the standard. More gravel can be added to a higher grade road. The fourth: when the ratio of the abandoned brick and the natural gravel is 90:10, the crushing value is 35%, which can meet the requirements of the standard. When the content of the abandoned brick is higher, adding more gravel can meet the requirements of the crushing value. (3) of cement stabilized construction waste mixture mix design was studied by 7d compaction test and unconfined compressive strength tests were confirmed in theory the idea of building rubbish aggregate used in light traffic highway base is feasible, and obtained the cement stabilized construction waste collection the material proportioning scheme, the experimental study for the promotion of building rubbish aggregate used in light traffic highway base plays an important role. (4) in order to evaluate the building rubbish aggregate base system, to provide the reference material used in light traffic on the highway for construction waste, construction waste of cement stabilized mechanical properties were studied, the influence of various factors on the recycled aggregate base on different cement dosage, different construction waste in different aggregates the strength of the cement type, the impact of unconfined compressive strength of 7D, as well as the long-term unconfined mechanical properties of compressive strength, indirect tensile strength and compressive modulus changes with age. The four types of construction waste mixture, the same age, the linear regression coefficient of different cement dosage in more than 0.9, indicating that four kinds of unconfined compressive strength, modulus of resilience performance of indirect tensile strength, compressive stable building garbage mixture, and showed a linear relationship with the cement dosage. (5) in this paper, the base thickness of building waste as light traffic volume highway pavement base material is calculated and studied. It is concluded that for light traffic volume highway pavement structure recommended in this paper, the recommended thickness of cement stabilized building waste aggregate base is 220mm~350mm.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U416.2
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本文編號：1338804