本文關(guān)鍵詞：鎂基建筑墻體防火保溫材料體系及性能的研究　出處：《安徽建筑大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 建筑節(jié)能 保溫材料 低品級(jí)菱鎂礦 氯氧鎂水泥 耐水性能 增強(qiáng) 保溫系統(tǒng)

【摘要】：隨著城市化建設(shè)水平的不斷提高,我國(guó)已逐漸成為一個(gè)建筑能耗大國(guó)。墻體保溫技術(shù)是減少建筑能耗的有效途徑,既符合國(guó)家節(jié)能減排的方針,又能改善生活環(huán)境。低品級(jí)菱鎂礦一直很少被利用,隨意堆放既浪費(fèi)資源又污染環(huán)境。本文以低品級(jí)菱鎂礦燒制成的輕燒氧化鎂、工業(yè)副產(chǎn)品氯化鎂為主要原料,制成了一種鎂基墻體保溫材料�；钚匝趸V的含量是輕燒鎂粉的一個(gè)重要性質(zhì),它決定輕燒鎂粉與氯化鎂的配合比。本文首先用水熱合成法測(cè)定了一份輕燒鎂粉樣品中活性氧化鎂的含量,測(cè)得值為39.12%,兩組試驗(yàn)的誤差僅為0.46%,該方法簡(jiǎn)單便捷。正常情況下在空氣中久置后,活性氧化鎂的含量會(huì)下降,而在一定溫度下煅燒久置的輕燒鎂粉能提高其中活性氧化鎂的含量。本文在750℃溫度下用馬弗爐煅燒一份久置的活性MgO含量降低到28.06%的輕燒鎂粉樣品1.5h后,活性氧化鎂的含量達(dá)到68.85%,比煅燒前提高了145.37%。本文隨后用粉煤灰、磷酸、硫酸鋁、有機(jī)硅防水劑以及活性MgO含量為34.91%的低品級(jí)輕燒氧化鎂研制出一種耐水氯氧鎂膠凝材料,并對(duì)鎂質(zhì)材料的強(qiáng)度、耐水性能進(jìn)行了測(cè)試。通過(guò)分析粉晶XRD衍射圖樣和斷面SEM微觀結(jié)構(gòu)對(duì)鎂質(zhì)材料的耐水機(jī)理進(jìn)行了研究。研究結(jié)果表明改性過(guò)的鎂質(zhì)材料具有優(yōu)良的耐水性能,其28d軟化系數(shù)從0.76提高到了0.98。本文還以聚丙烯纖維、普通廢棄陶瓷、工業(yè)氯化鎂以及含39.12%活性氧化鎂的低品級(jí)輕燒氧化鎂制成了一種鎂水泥基建筑墻體材料。采用正交試驗(yàn)確定了最佳配合比,并對(duì)聚丙烯纖維、廢棄陶瓷復(fù)合增強(qiáng)劑對(duì)鎂水泥干縮性能的影響進(jìn)行了探討。研究結(jié)果表明,纖維及陶瓷對(duì)鎂水泥分別起到了增韌增強(qiáng)及骨架作用。其制品28d干縮率僅為0.03%。本文還通過(guò)用Origin軟件對(duì)試驗(yàn)數(shù)據(jù)進(jìn)行回歸分析,以方程的形式量化了表觀密度、強(qiáng)度和導(dǎo)熱系數(shù)三者與聚苯乙烯顆粒加入量的關(guān)系。分析了鎂水泥基EPS顆粒輕集料混凝土的破壞機(jī)理析,認(rèn)為試塊的強(qiáng)度隨著聚苯乙烯加入量增加而降低的速度逐漸變得平緩是因?yàn)橛绊憦?qiáng)度的主導(dǎo)因素由氯氧鎂水泥硬化體的數(shù)量變成了水泥漿與EPS顆�；旌系木鶆虺潭�。本文還設(shè)計(jì)出一種新型雙面翻轉(zhuǎn)保溫試模,使鎂水泥石與EPS顆粒能更均勻混合并更緊密結(jié)合,提高了保溫試塊的安全性能。本文最后初步設(shè)計(jì)出鎂基建筑墻體保溫系統(tǒng),并繪制出鎂基EPS顆粒板薄抹灰系統(tǒng)的構(gòu)造圖。
[Abstract]:With the continuous improvement of the level of city construction, China has gradually become a building energy consumption country. Wall insulation technology is an effective way to reduce the energy consumption of the building, not only conforms to the national energy-saving emission reduction policy, and to improve the living environment. Low grade magnesite has been rarely used by dumping is not only a waste of resources and environmental pollution. In this paper low grade magnesite made of light burned Magnesium Oxide, industrial by-product magnesium chloride as the main raw material, a magnesium base wall insulation materials is made. The content of active Magnesium Oxide is one of the important properties of light burned magnesium, it decided to cooperate with light burned magnesium chloride and magnesium ratio. Firstly, hydrothermal synthesis method of a light Magnesium Oxide burning active determination of magnesium in the sample, the measured value is 39.12%, the error of the two experimental groups was only 0.46%, the method is simple and convenient. Under normal circumstances in the air for a long time, the activity of Magnesium Oxide The content will decline, but at a certain temperature calcining long set of light burned magnesium can improve the content of the activity of Magnesium Oxide. This paper used a muffle furnace calcination for a long time the activity of MgO content decreased to 28.06% of the light burned magnesium sample 1.5h at 750 DEG C temperature, the content of active Magnesium Oxide reached 68.85%, than calcination the improved 145.37%. then fly ash, phosphoric acid, aluminum sulfate, organosilicon waterproofing agent and active MgO content of 34.91% low grade light burning Magnesium Oxide developed a magnesium oxychloride cementitious material, and magnesia material strength, water resistance were tested. By analyzing the water resistant mechanism of powder XRD diffraction pattern section SEM and the microstructure of magnesia materials were studied. The results show that modified magnesia material has excellent water resistance, the softening coefficient of 28d increased from 0.76 to 0.98. based on polypropylene fiber, Ordinary ceramic waste, industrial magnesium chloride and low grade with 39.12% active Magnesium Oxide Magnesium Oxide a light burned magnesium cement base building wall material made by orthogonal test. The optimum mixture ratio, and the polypropylene fiber, waste ceramic composite reinforcing agent of magnesium cement dry shrinkage were discussed. The results show that the ceramic fiber and magnesium cement respectively to reinforced skeleton role. The products of 28d and dry shrinkage is only 0.03%. based on the regression analysis of test data using Origin software to quantify the density equation of apparent strength and thermal conductivity of three and the amount of polystyrene particles. The relationship between the analysis the failure mechanism of magnesium cement particles of EPS lightweight aggregate concrete, that the strength of test block with polystyrene addition decreasing speed becomes smoothly because of the impact strength The leading factor by the number of magnesium oxychloride cement hardened into a uniform degree of cement paste and EPS particles. This paper also designed a new type of double turn insulation test mode, the magnesium cement and EPS particles can be uniformly mixed and more closely, to improve the insulation block safety performance in this paper. Finally, the preliminary design of magnesium based building wall insulation system, and draw the structure diagram of magnesium based EPS particle board thin plastering system.

【學(xué)位授予單位】：安徽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU551

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本文編號(hào)：1438890