本文選題：發(fā)泡水泥 + 干表觀密度��； 參考：《青島理工大學(xué)》2013年碩士論文

【摘要】：發(fā)泡水泥是一種含有大量封閉獨(dú)立氣孔，具有輕質(zhì)、保溫、隔熱、耐火及隔音等性能的材料。其主要成型工藝為：料漿在攪拌過(guò)程中利用化學(xué)方法引入氣泡，形成發(fā)泡水泥拌合物，將拌合物澆筑入模后膨脹而成。利用硫鋁酸鹽水泥制備無(wú)機(jī)發(fā)泡保溫材料，，具有強(qiáng)度發(fā)展快，生產(chǎn)周期短的特點(diǎn)。然而硫鋁酸鹽水泥價(jià)格高，如何科學(xué)有效利用礦物摻合料來(lái)降低生產(chǎn)成本是工程界普遍關(guān)心的問(wèn)題。本試驗(yàn)首次將石油化工企業(yè)的廢渣—脫硫石油焦灰渣用于硫鋁酸鹽水泥發(fā)泡材料，基于雙氧水發(fā)泡工藝，制作出低容重且保溫性能優(yōu)良的硫鋁酸鹽水泥—粉煤灰—石油焦渣發(fā)泡保溫材料。 本文獲得了國(guó)家“十二五”科技支撐計(jì)劃子課題“磨細(xì)高硫石油焦脫硫灰渣建材利用技術(shù)研究”（2011BAJ04B05-05）的資助，主要研究了水膠比和發(fā)泡劑用量對(duì)保溫材料性能的影響。硫鋁酸鹽水泥—粉煤灰—石油焦渣膠凝材料體系中石油焦渣摻量占膠凝材料總量的20%，變化發(fā)泡劑用量分別為膠凝材料總量的6.7%、7.3%、8.0%和8.7%，變化水膠比為0.7、0.8、0.9和1.0，通過(guò)試驗(yàn)總結(jié)出干表觀密度和抗壓強(qiáng)度的變化規(guī)律。選取合適配比按照J(rèn)G/T041-2011的要求，測(cè)試制品的干表觀密度、抗壓強(qiáng)度、導(dǎo)熱系數(shù)、軟化系數(shù)、含水率、體積吸水率和燃燒等級(jí)等性能指標(biāo)。本文最后也對(duì)低密度發(fā)泡水泥應(yīng)用于自保溫砌塊進(jìn)行了相關(guān)研究。 研究結(jié)果表明：（1）激發(fā)劑的摻入加快了發(fā)泡劑的反應(yīng)速率，縮短了發(fā)泡持續(xù)時(shí)間約5~10min。（2）水膠比為0.7~1.0，穩(wěn)泡劑摻量為0.02%時(shí)，漿料較容易拌合，氣泡能均勻分布，不會(huì)出現(xiàn)分層，脫模時(shí)間較短。（3）發(fā)泡劑用量的增加和水膠比的增大均能降低發(fā)泡制品的干表觀密度和抗壓強(qiáng)度。（4）隨著發(fā)泡劑用量的增加，制品的孔徑也隨之增大，但水膠比的變化對(duì)孔直徑影響不大，制品的孔徑大概在0.5~2mm。（5）在本研究中，測(cè)得制品的干表觀密度為200~300kg/m3，抗壓強(qiáng)度為0.3~0.6MPa，導(dǎo)熱系數(shù)為0.04~0.08W/(m·k)，軟化系數(shù)不小于0.7，含水率不超過(guò)3%，采用外涂防水憎水處理劑，體積吸水率完全可以達(dá)到10%以內(nèi)，燃燒等級(jí)為A級(jí)�；诒狙芯恳焉陥�(bào)發(fā)明專利1項(xiàng)，實(shí)用新型專利2項(xiàng)。 本試驗(yàn)采用的脫硫石油焦渣和粉煤灰均屬于工業(yè)廢棄物，具有綠色環(huán)保和再生利用的特點(diǎn)，符合循環(huán)經(jīng)濟(jì)的要求，并具有顯著的經(jīng)濟(jì)效益。
[Abstract]:Foamed cement is a kind of material which contains a large number of closed independent pores with light, heat insulation, heat insulation, fire resistance and sound insulation. The main forming process is that the slurry is introduced by chemical method in the stirring process to form foamed cement mixture, and the mixture is poured into the mold. The foam insulation material has the characteristics of fast development and short production cycle. However, the price of sulphoaluminate cement is high. How to use mineral admixture effectively to reduce the production cost is a common concern in the engineering field. For the first time, the waste residue of the petrochemical enterprise, desulfurization petroleum coke slag, is used for the foaming material of sulphoaluminate cement. Based on the hydrogen peroxide foaming process, a sulfoaluminate cement fly ash petroleum coke slag foaming insulation material with low bulk density and excellent thermal insulation property was produced.
This article is supported by the national "12th Five-Year" science and technology support program "Research on the utilization technology of fine high sulfur petroleum coke desulphurization ash building materials" (2011BAJ04B05-05). It mainly studies the effect of water gel ratio and the amount of foaming agent on the properties of thermal insulation materials. The amount of coke residue accounts for 20% of the total amount of cementitious material. The amount of change foaming agent is 6.7%, 7.3%, 8% and 8.7% of the aggregate of cementitious material, and the change of water glue ratio is 0.7,0.8,0.9 and 1. The change law of the apparent density and compressive strength of the dry surface is summed up by the test. The suitable ratio of the dry surface density and compressive strength of the products is tested according to the requirements of JG/ T041-2011. Strength, thermal conductivity, softening coefficient, moisture content, volume water absorption and combustion grade etc. in the end of this paper, the application of low density foam cement to self insulation block is also studied in this paper.
The results show that: (1) the addition of activator accelerates the reaction rate of the foaming agent, shortens the foaming duration about 5~10min. (2) and the ratio of water to glue is 0.7~1.0, and when the amount of foam stabilizer is 0.02%, the slurry is more easily mixed and the bubbles can be distributed evenly, no stratification and short release time. (3) the increase of the amount of foaming agent and the increase of the ratio of water to glue. The dry surface density and compressive strength of the foaming products can be reduced. (4) with the increase of the amount of foaming agent, the pore size of the products increases, but the change of water binder ratio has little effect on the diameter of the hole. The pore diameter of the product is about 0.5~2mm. (5). The dry apparent density of the products is 200~300kg/m3, the compressive strength is 0.3~0.6MPa, and the thermal conductivity system is in this study. With the number of 0.04~0.08W/ (M. K), the softening coefficient is not less than 0.7 and the water content is not more than 3%. Using the waterproof and hydrophobic treatment agent coated with outer coating, the volume of water absorption can be less than 10% and the combustion grade is a grade. Based on this study, 1 patents and 2 utility model patents have been declared.
The desulfurization petroleum coke residue and fly ash are industrial wastes, which have the characteristics of green environmental protection and recycling, which meet the requirements of the recycling economy and have significant economic benefits.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU551.33

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