本文選題：堿渣 + 脫硫石膏�。� 參考：《上海大學(xué)》2014年碩士論文

【摘要】：堅(jiān)持可持續(xù)發(fā)展道路，是我國一項(xiàng)長期的基本國策�？沙掷m(xù)發(fā)展道路的核心是資源的循環(huán)利用，而工業(yè)廢棄物作為一種特殊資源，如何將其變廢為寶，走廢棄物資源化道路，是一個(gè)非常具有現(xiàn)實(shí)意義的研究課題。 堿渣和脫硫石膏都是我國常見的兩種工業(yè)廢棄物，，堿渣是氨堿法生產(chǎn)純堿過程中產(chǎn)生的工業(yè)廢渣，脫硫石膏是由火力發(fā)電廠煙氣脫硫產(chǎn)生的廢料。多年來，這兩種固體廢棄物的綜合利用水平較低，最常用的處理方法就是就地堆積，然而這不僅占用耕地，而且破壞生態(tài)環(huán)境。 本課題首先綜合利用堿渣、礦渣、粉煤灰作為主要原材料，并摻入適量的脫硫石膏及復(fù)摻少量激發(fā)劑進(jìn)行配合比設(shè)計(jì)，采用球磨工藝進(jìn)行深加工，充分激發(fā)其活性，研制出一種能在物理力學(xué)性能方面基本取代32.5標(biāo)號(hào)復(fù)合水泥技術(shù)要求的土壤固化劑——新型無熟料堿渣固化劑。然后對新型無熟料堿渣固化劑進(jìn)行正交試驗(yàn)，探討了各種原材料摻量對其強(qiáng)度、安定性、標(biāo)準(zhǔn)稠度需水量和凝結(jié)時(shí)間的影響，并根據(jù)強(qiáng)度和安定性等優(yōu)選出最佳配合比。為了進(jìn)一步了解最佳配合比下的新型無熟料堿渣固化劑性能，對其養(yǎng)護(hù)條件、耐久性能、水化熱及微觀等方面進(jìn)行進(jìn)一步分析，最終發(fā)現(xiàn)該固化劑的水化產(chǎn)物與水泥相似。 通過對5種摻入比的新型無熟料堿渣固化土進(jìn)行14d、28d、90d三種齡期的無側(cè)限抗壓強(qiáng)度試驗(yàn)、劈裂抗拉試驗(yàn)、壓縮試驗(yàn)、三軸壓縮試驗(yàn)研究了新型無熟料堿渣固化土的工程特性，并對新型無熟料堿渣固化土的抗壓強(qiáng)度、抗拉強(qiáng)度、抗剪強(qiáng)度及應(yīng)力-應(yīng)變關(guān)系等方面的試驗(yàn)結(jié)果進(jìn)行了分析，為該新型固化劑材料在實(shí)際工程方面的應(yīng)用提供理論支撐。最后將新型無熟料堿渣固化土與同標(biāo)號(hào)復(fù)合水泥土進(jìn)行14d、28d、90d齡期的對比試驗(yàn)，對其結(jié)果進(jìn)行分析，從而確定研究該固化劑作為土壤固化劑的可行性。此外從新型無熟料堿渣固化劑遇水后所產(chǎn)生的一系列化學(xué)反應(yīng)及其與土發(fā)生復(fù)雜的化學(xué)反應(yīng)的增強(qiáng)機(jī)理出發(fā)，結(jié)合堿渣的強(qiáng)堿性作用問題，探討了新型無熟料堿渣固化土力學(xué)性能的影響機(jī)理。
[Abstract]:Adhere to the road of sustainable development, is a long-term basic national policy. The core of sustainable development road is the recycling of resources. As a special resource, how to turn industrial waste into treasure and take the road of recycling is a very important research topic. Alkali slag and desulphurized gypsum are two common industrial wastes in China. Alkali slag is the industrial waste produced in the production of soda by ammonia alkali process, and desulphurization gypsum is the waste produced by flue gas desulfurization in thermal power plant. For many years, the level of comprehensive utilization of these two kinds of solid wastes is relatively low, the most commonly used disposal method is local accumulation, but this not only occupies the cultivated land, but also destroys the ecological environment. In this paper, first of all, the alkali slag, slag and fly ash are used as the main raw materials, and the proper amount of desulphurization gypsum and a small amount of activator are added to the mix ratio design, and the deep processing is carried out by ball milling technology, and its activity is fully stimulated. A new type of soil-curing agent, a new alkali slag curing agent without clinker, was developed, which can basically replace the technical requirement of 32.5 grade composite cement in physical and mechanical properties. Then the orthogonal test was carried out on the new alkali-slag curing agent without clinker, and the effects of various raw material contents on strength, stability, standard consistency water requirement and setting time were discussed, and the optimum mix ratio was selected according to the strength and stability. In order to further understand the properties of the new alkali-slag curing agent without clinker under the optimum mixture ratio, the curing conditions, durability, hydration heat and microcosmic of the curing agent were further analyzed. Finally, it was found that the hydration product of the curing agent was similar to that of cement. The engineering properties of the new unclinker alkali slag solidified soil were studied by the unconfined compressive strength test, splitting tensile test, compression test and triaxial compression test of three ages of 14 days, 28 days and 90 days, on the basis of five kinds of new unclinker alkali slag solidified soil. The experimental results on the compressive strength, tensile strength, shear strength and stress-strain relationship of the new type of soil-cured soil without clinker are analyzed, which provides theoretical support for the application of the new curing agent in practical engineering. At last, a comparative test of 14 days to 28 days and 90 days of age was carried out between a new type of alkali slag solidified soil without clinker and composite cement soil of the same grade, and the results were analyzed, and the feasibility of the study on this curing agent as soil curing agent was determined. In addition, starting from a series of chemical reactions produced by the new alkali-slag curing agent without clinker and the strengthening mechanism of complex chemical reactions with soil, the paper combines the problem of strong alkalinity of alkali slag. The influence mechanism of the mechanical properties of new alkali-slag solidified soil without clinker was discussed.
【學(xué)位授予單位】：上海大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU41;X705

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