本文選題：道路工程 + 水泥混凝土��； 參考：《河北工業(yè)大學(xué)》2014年碩士論文

【摘要】：水泥混凝土路面的不斷發(fā)展，帶動(dòng)社會(huì)經(jīng)濟(jì)發(fā)展的同時(shí)，也使越來(lái)越多的人對(duì)水泥混凝土有了更深的接觸與認(rèn)識(shí)，從而使得水泥混凝土家喻戶(hù)曉，風(fēng)靡全球。在輝煌籠罩的光環(huán)下，人們對(duì)水泥混凝土路面的使用性能提出了更高的要求，耐久性和長(zhǎng)期穩(wěn)定性已成為現(xiàn)代水泥混凝土路面修筑的基本目標(biāo)�；炷谅访媸褂眯阅艿奶嵘�，有賴(lài)于拌合過(guò)程的質(zhì)量控制。為此，針對(duì)水泥混凝土拌合過(guò)程中定量化品質(zhì)管理的問(wèn)題，展開(kāi)以下幾方面的研究。 1、在試驗(yàn)室內(nèi)，運(yùn)用加裝有扭矩傳感器的小型雙臥軸攪拌機(jī)，實(shí)現(xiàn)了對(duì)扭矩、攪拌時(shí)間的實(shí)時(shí)采集與存儲(chǔ)。分析了攪拌時(shí)間以及攪拌速度對(duì)骨料拌合過(guò)程質(zhì)量的影響，確定了骨料拌合均勻的最佳攪拌時(shí)間，建立了骨料拌合均勻與單位體積中各檔骨料重量相對(duì)誤差之間的關(guān)系，建立了骨料拌合均勻與扭矩之間的關(guān)系，同時(shí)建立了拌合過(guò)程中骨料級(jí)配變化與攪拌時(shí)間之間的關(guān)系，為水泥混凝土拌合過(guò)程中的定量化品質(zhì)管理研究提供了研究思路以及物質(zhì)基礎(chǔ)。 2、在試驗(yàn)室內(nèi)，，運(yùn)用加裝有扭矩傳感器的小型雙臥軸攪拌機(jī)，實(shí)現(xiàn)了對(duì)扭矩、攪拌時(shí)間的實(shí)時(shí)采集與存儲(chǔ)。分析了攪拌時(shí)間以及攪拌速度對(duì)水泥混凝土拌合過(guò)程質(zhì)量的影響，確定了間斷級(jí)配混凝土和連續(xù)級(jí)配混凝土的最佳拌合時(shí)間，確定了混凝土最佳的投料順序，建立了混凝土拌合均勻與單位體積中各檔骨料重量相對(duì)誤差之間的關(guān)系，建立了混凝土拌合均勻與抗壓強(qiáng)度值之間的關(guān)系，同時(shí)建立了混凝土拌合均勻與扭矩之間的關(guān)系，實(shí)現(xiàn)在線(xiàn)實(shí)時(shí)監(jiān)控水泥混凝土的拌合質(zhì)量。 3、在試驗(yàn)室內(nèi)，運(yùn)用小型雙臥軸攪拌機(jī)。系統(tǒng)的分析了骨料含水率對(duì)水泥混凝土拌合質(zhì)量的影響，確定了骨料含水率對(duì)不同標(biāo)號(hào)混凝土的抗壓強(qiáng)度值與抗折強(qiáng)度值均有較大影響，得出標(biāo)養(yǎng)7天時(shí)混凝土的最大抗壓強(qiáng)度值與最大抗折強(qiáng)度值與實(shí)際有一定的偏差，對(duì)于造成偏差的具體原因需進(jìn)一步的研究。
[Abstract]:With the continuous development of cement concrete pavement and the development of social economy, more and more people have a deeper contact and understanding of cement concrete, which makes cement concrete become a household name and become popular all over the world. Under the brilliance shrouded in the aura, people put forward higher requirements to the performance of cement concrete pavement, durability and long-term stability have become the basic goal of modern cement concrete pavement construction. The improvement of the performance of concrete pavement depends on the quality control of mixing process. Therefore, aiming at the problem of quantitative quality management in cement concrete mixing process, the following aspects are studied. 1. In the test room, the torque is realized by using a small double horizontal shaft mixer equipped with torque sensor. Real-time collection and storage of stirring time. The effects of mixing time and stirring speed on the quality of aggregate mixing process are analyzed. The optimum mixing time of aggregate mixing uniformity is determined, and the relationship between aggregate mixing uniformity and relative error of aggregate weight per unit volume is established. The relationship between aggregate mixing uniformity and torque, and the relationship between aggregate gradation and mixing time were established. It provides the research idea and material basis for the quantitative quality management research in cement concrete mixing process. 2. In the test room, the torque is realized by using a small double horizontal shaft mixer with torque sensor. Real-time collection and storage of stirring time. The influence of mixing time and mixing speed on the quality of cement concrete mixing process is analyzed. The optimum mixing time of discontinuous graded concrete and continuous graded concrete is determined, and the best feeding sequence of concrete is determined. The relation between concrete mixing uniformity and the relative error of aggregate weight per unit volume, the relation between concrete mixing uniformity and compressive strength, and the relationship between concrete mixing uniformity and torque are established. Realize on-line real-time monitoring of cement concrete mixing quality. 3, in the test room, the use of small double horizontal shafts mixer. The effect of aggregate moisture content on cement concrete mixing quality is analyzed systematically. It is determined that aggregate moisture content has great influence on compressive strength and flexural strength of concrete of different grades. It is concluded that the maximum compressive strength and the maximum flexural strength of concrete after 7 days of standard maintenance are deviated from the actual conditions, and the concrete causes of the deviation need to be further studied.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U414;U416.216

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