本文關鍵詞： 橡膠粉 水泥混凝土 配合比設計 路用性能　出處：《重慶交通大學》2015年碩士論文　論文類型：學位論文

【摘要】：長期以來,我國對廢舊輪胎只是做簡單的地面堆積或掩埋處理,該方法易造成潛在的環(huán)境污染和消防危險,而且這種處理方式不能有效處理日益增加的廢舊橡膠輪胎。廢舊橡膠輪胎的主要方式包括:生產(chǎn)再生膠、焚燒產(chǎn)生能源以及生產(chǎn)橡膠粉。因此本文采用廣西南寧市廣源細膠粉廠生產(chǎn)的廢舊輪胎橡膠粉取代砂配制了橡膠粉水泥混凝土,結合室內(nèi)試驗和試驗路鋪筑得到了以下結論:(1)通過由20目、40目、60目等三種細度橡膠粉摻拌成的混凝土力學性、和易性變化分析,研究橡膠粉細度對混凝土性能的影響,并考慮橡膠粉的經(jīng)濟性,確定選用40目橡膠粉顆粒。(3)通過對不同摻量橡膠粉水泥混凝土的力學、干縮、耐磨、抗?jié)B、沖磨等路用性能變化分析研究,綜合各項路用性能指標發(fā)現(xiàn)橡膠粉最佳替代量為3.0%~3.5%。(4)測定了不同橡膠粉替代率水泥混凝土的阻尼比和超聲波傳播速度,經(jīng)分析認為摻入橡膠可以有效降低混凝土路面噪聲的產(chǎn)生,有利于行車舒服性和環(huán)境保護。(5)采用SEM觀察了橡膠粉水泥混凝土的內(nèi)部結構,發(fā)現(xiàn)橡膠粉水泥混凝土內(nèi)部存在三種不同性能界面,這三種不同性能界面的生成與橡膠粉摻量多少有關。當橡膠摻量不大于3.5%時,橡膠粉水泥混凝土內(nèi)部生成的界面以第一種和第二種為主,這兩種界面較為穩(wěn)定不易破裂。(6)結合廣西的氣候特點,研究了橡膠粉水泥混凝土的高溫穩(wěn)定性、高溫耐久性和低溫穩(wěn)定性。橡膠粉摻量為3.5%左右時混凝土的高溫穩(wěn)定性、高溫耐久性和低溫穩(wěn)定性最佳。(7)完成了國內(nèi)第一條橡膠粉水泥混凝土路面(邕寧至浦北二級公路欽州段No.1 K60+750~K61+250)的施工和相關檢測工作。
[Abstract]:For a long time, the waste tires in our country only do simple ground stacking or burial treatment, this method is easy to cause potential environmental pollution and fire hazards. And this treatment method can not effectively deal with the increasing number of waste rubber tyres. The main methods of waste rubber tires include: the production of reclaimed rubber. Therefore, the waste tire rubber powder produced by Guang Yuan Fine Rubber Powder Plant of Guangxi Nanning City was used instead of sand to prepare rubber powder cement concrete. Combined with laboratory test and road paving, the following conclusions were obtained: 1) the mechanical properties and easiness of concrete mixed with three kinds of fineness rubber powder, including 20 mesh, 40 mesh and 60 mesh, were analyzed. The effect of rubber powder fineness on the properties of concrete was studied, and considering the economy of rubber powder, 40 mesh rubber powder particle was selected. The mechanical, dry shrinkage and wear resistance of cement concrete with different amount of rubber powder were studied. Analysis and study on the change of road performance such as impermeability, grinding and so on. The optimum substitution quantity of rubber powder was found to be 3. 0 and 3. 5. The damping ratio and ultrasonic propagation speed of cement concrete with different rubber powder substitution rate were measured. Through analysis, it is concluded that the addition of rubber can effectively reduce the noise of concrete pavement, which is beneficial to driving comfort and environmental protection.) the internal structure of rubber powder cement concrete is observed by SEM. It is found that there are three different performance interfaces in the rubber powder cement concrete. The formation of the three different performance interfaces is related to the amount of rubber powder, when the rubber content is less than 3.5%. The interface formed in rubber powder cement concrete is mainly the first one and the second one. These two interfaces are relatively stable and difficult to break. 6) combined with the climatic characteristics of Guangxi. The high temperature stability, high temperature durability and low temperature stability of rubber powder cement concrete were studied. The first rubber cement concrete pavement (No.1 K60 750 K61 250) of Qinzhou second class highway from Yongning to Pubei has been completed. Construction and related inspection work.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U416.216

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本文編號：1475689