本文選題：廢玻璃 + 輔助膠凝材料　； 參考：《南華大學(xué)》2015年碩士論文

【摘要】：隨著經(jīng)濟(jì)的快速發(fā)展,廢玻璃垃圾日益增多,除部分被回收重新制成玻璃外,大部分被作掩埋處理,嚴(yán)重污染生態(tài)環(huán)境。將廢玻璃摻入水泥基拌合物中,運(yùn)用到建筑上成為當(dāng)今熱門話題。將廢玻璃粉摻入水泥基拌合物中,不僅節(jié)約了有限的建筑資源,而且開(kāi)辟了廢玻璃回收利用的新途徑,符合國(guó)家節(jié)能減排政策。傳統(tǒng)上對(duì)廢玻璃粉的研究主要側(cè)重細(xì)度方面,其細(xì)度表征的內(nèi)容主要包括比表面積、顆粒大小、平均粒度與顆粒分布等方面。廢玻璃粉顆粒是一種人工顆粒,具有高比表面積與多分散性兩大特征,其細(xì)度表征即為顆粒的粒度表征,是以廢玻璃粉群體顆粒為對(duì)象,表示所有顆粒大小的總體概念。但隨著研究的不斷深入一定粒徑下的篩余量與比表面積,無(wú)法精細(xì)反映廢玻璃粉的真實(shí)級(jí)配分布特征與細(xì)度特點(diǎn),與其活性建立的相關(guān)性往往也不太精確,采用分形理論可以克服這一弱點(diǎn),不同分形維數(shù)的廢玻璃粉有不同的細(xì)度模數(shù)與活性指數(shù),不同碾磨時(shí)間廢玻璃粉的細(xì)觀、微觀的定量化指標(biāo)由分形維數(shù)表達(dá)可與廢玻璃粉的活性指數(shù)準(zhǔn)確聯(lián)系起來(lái),進(jìn)而從一個(gè)新的角度闡釋廢玻璃粉的性能,對(duì)其運(yùn)用到建筑材料中有積極意義。本文主要將廢玻璃粉作為輔助膠凝材料摻入膠砂中,研究其拌合物的和易性與力學(xué)性,為其運(yùn)用到實(shí)踐工程上作理論指導(dǎo)。為研究不同粒徑廢玻璃粉對(duì)膠砂流動(dòng)性、抗折抗壓性能的影響,將無(wú)色廢玻璃碾磨并篩分為38-53μm、53-75μm、75-150μm、150-300μm、300-600μm五種粉末狀態(tài),作為輔助膠凝材料以內(nèi)摻法分別替代膠砂中水泥5%、10%、15%、20%、25%、30%的用量,對(duì)照組分為無(wú)減水劑與含減水劑兩組,同時(shí)每組均加粉煤灰、硅灰作對(duì)比,測(cè)量拌合物擴(kuò)展度以及28天的抗折抗壓強(qiáng)度。結(jié)果表明,當(dāng)廢玻璃粉粒徑小于75μm同時(shí)摻量在10-15%時(shí),對(duì)提高膠砂流動(dòng)性較佳;當(dāng)水用量不變摻入減水劑時(shí),抑制膠砂強(qiáng)度;無(wú)論是否摻入減水劑,廢玻璃粉在膠砂中最佳粒徑與摻量幾乎相同;無(wú)論是否摻入減水劑,當(dāng)廢玻璃粉粒徑為38-53μm同時(shí)摻量為5-15%時(shí),其膠砂試件28天抗折抗壓強(qiáng)度最佳且與基準(zhǔn)組相差無(wú)幾。
[Abstract]:With the rapid development of economy, the waste glass garbage is increasing day by day, except for some recycled glass, most of them are buried, which pollutes the ecological environment seriously. It is a hot topic to add waste glass into cement-based mixture and apply it to architecture. Mixing waste glass powder into cement based mixture not only saves limited construction resources, but also opens up a new way of recycling waste glass, which is in line with the national policy of energy saving and emission reduction. Traditionally, the research on waste glass powder mainly focuses on fineness, the content of fineness characterization mainly includes specific surface area, particle size, average particle size and particle distribution. The waste glass powder is a kind of artificial particle, which has two characteristics: high specific surface area and polydispersity. Its fineness is the particle size representation, and it is a general concept that takes the waste glass powder population particle as the object and represents the size of all the particles. However, with the further study of the sieve allowance and specific surface area under a certain particle size, the true gradation and fineness characteristics of waste glass powder can not be accurately reflected, and the correlation with its activity is often not very accurate. Fractal theory can overcome this weakness. Different fractal dimensions of waste glass powder have different fineness modulus and activity index, and different grinding time of waste glass powder. The quantitative index expressed by fractal dimension can be accurately related to the activity index of waste glass powder, and then the performance of waste glass powder can be explained from a new angle, which has a positive significance for its application to building materials. In this paper, waste glass powder is mainly mixed into cement sand as auxiliary cementing material to study its mixing properties and mechanical properties, and to make theoretical guidance for its application in practical engineering. In order to study the effect of waste glass powder of different particle size on the flowability and flexural compressive properties of cement sand, the colorless waste glass was milled and sifted to 38-53 渭 m ~ 53-75 渭 m ~ 75-150 渭 m ~ 150-300 渭 m ~ 300-600 渭 m, which was used as an auxiliary cementing material to replace the dosage of 51010 ~ 1520 ~ 1520 ~ 2520% cement in cementing sand respectively. The control group was divided into two groups: no water reducing agent and water reducing agent group. At the same time, fly ash and silica fume were added to each group for comparison. The extensibility of the mixture and the compressive strength of 28 days were measured. The results show that when the particle size of waste glass powder is less than 75 渭 m and the amount of waste glass powder is 10-15%, the fluidity of cement sand is better, and the strength of cement sand is inhibited when the amount of water is not changed, whether or not water reducer is added, The optimum particle size and content of waste glass powder in cement sand are almost the same, and when the particle size of waste glass powder is 38-53 渭 m and the content of waste glass powder is 5-15%, whether or not the waste glass powder is mixed with water reducing agent, the best flexural compressive strength of the mortar specimen in 28 days is the best and is no different from that of the reference group.
【學(xué)位授予單位】：南華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU528

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 陶高梁;張季如;;巖土工程中的分形理論及其應(yīng)用[J];中國(guó)科技論文在線;2009年07期

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本文編號(hào)：2003906