玻璃輕石混凝土力學(xué)性能及熱工性能試驗(yàn)研究
發(fā)布時間：2018-10-24 12:41
【摘要】：隨著全球能源問題日益加劇和我國大力推行墻體改革、節(jié)能減排等相關(guān)政策,開發(fā)研制集廢物利用、節(jié)能保溫、安全可靠于一體的新型墻體材料成為建筑行業(yè)內(nèi)的主要方向。幾種傳統(tǒng)的外墻保溫工程做法各有不足,就連有效占領(lǐng)我國建筑節(jié)能主流市場的外墻外保溫也存在易開裂、脫落、防火性能差等諸多缺點(diǎn)。廢玻璃作為人們?nèi)粘Ｉ钪袑ΣＡе破废M(fèi)后產(chǎn)生的垃圾,既難處理又浪費(fèi)資源。國內(nèi)外將廢玻璃直接粉碎后作為粗、細(xì)骨料應(yīng)用于混凝土和砂漿的研究成果較為豐富,但多以達(dá)到混凝土和砂漿的工作性能和力學(xué)強(qiáng)度指標(biāo)為研究目的,尚未涉及將經(jīng)過粉碎、燃燒、發(fā)泡等工序處理后制備出的人造多孔材料——廢玻璃再生輕石作為輕質(zhì)骨料用于配制玻璃輕石混凝土的研究。在該背景下,進(jìn)行玻璃輕石混凝土這種新型保溫材料的性能研究和理論分析具有重要意義。因此,本文從玻璃輕石混凝土的原材料物理性能、配合比設(shè)計及其保溫性能、基本力學(xué)性能展開了試驗(yàn)研究工作,同時結(jié)合對玻璃輕石混凝土用于外墻的具體住宅建筑的熱工性能進(jìn)行模擬分析。本文主要完成以下工作:(1)進(jìn)行玻璃輕石骨料的物理力學(xué)性能試驗(yàn),試驗(yàn)結(jié)果表明,玻璃輕石的各項(xiàng)性能指標(biāo)均滿足《輕集料及其試驗(yàn)方法》GBT17431-2010的相關(guān)要求,可以作為混凝土的輕質(zhì)骨料。(2)根據(jù)正交試驗(yàn)設(shè)計原理,測定了16組不同配合比設(shè)計的玻璃輕石混凝土的導(dǎo)熱系數(shù)和立方體抗壓強(qiáng)度。通過對試驗(yàn)數(shù)據(jù)的極差和方差分析,得出各相關(guān)因素對玻璃輕石混凝土保溫性能和抗壓強(qiáng)度的影響規(guī)律和影響程度。水泥用量的增加使玻璃輕石混凝土抗壓強(qiáng)度得到提高,但是降低了混凝土的保溫效果;輕石粗細(xì)骨料總體積的增加使玻璃輕石混凝土保溫效果得到了增強(qiáng),但是降低了混凝土的抗壓強(qiáng)度;輕石粗骨料級配的變化對玻璃輕石混凝土抗壓強(qiáng)度和導(dǎo)熱系數(shù)影響均不明顯。各因素對玻璃輕石混凝土抗壓強(qiáng)度的影響程度為:水泥用量最大,輕石粗細(xì)骨料總體積次之,輕石粗骨料級配最小;各因素對玻璃輕石混凝土導(dǎo)熱系數(shù)的影響程度為:輕石粗細(xì)骨料總體積最大,水泥用量次之,輕石粗骨料級配最小。(3)采用DeST-h熱工分析軟件,以一棟位于武漢地區(qū)的住宅建筑作為研究對象,建立能耗計算模型。對比分析了分別采用玻璃輕石混凝土、加氣混凝土和普通混凝土做外圍護(hù)墻體材料時,房間、系統(tǒng)及整個建筑在采暖期、空調(diào)期和全年的能耗情況。計算結(jié)果表明,玻璃輕石混凝土外墻建筑和加氣混凝土外墻建筑的能耗相差不大,說明兩種保溫體系的保溫效果相當(dāng);同普通混凝土外墻建筑相比,玻璃輕石混凝土外墻建筑能夠顯著降低建筑能耗,尤其在采暖能耗方面,節(jié)能率均在60%以上,體現(xiàn)出玻璃輕石混凝土外墻體系優(yōu)良的保溫隔熱性能。
[Abstract]:With the increasing global energy problem and China vigorously carrying out wall reform, energy saving and emission reduction policies, the development of new wall materials with waste utilization, energy conservation and insulation, safety and reliability has become the main direction in the construction industry. Several traditional methods of exterior wall insulation engineering have their shortcomings, even the external wall insulation which effectively occupies the mainstream market of building energy conservation in our country also has many shortcomings, such as easy cracking, falling off, poor fire resistance and so on. Waste glass is a kind of garbage produced by people's daily life, which is difficult to dispose and waste resources. Domestic and international research on the application of waste glass as coarse and fine aggregate in concrete and mortar is rich, but the purpose of the research is to achieve the working performance and mechanical strength of concrete and mortar, which has not been involved in crushing. The artificial porous material, waste glass regenerated lightweight stone, which was prepared by combustion, foaming and other processes, was used as lightweight aggregate to prepare glass-light stone concrete. Under this background, it is of great significance to study the properties and theoretical analysis of glass lightweight concrete, a new type of thermal insulation material. Therefore, in this paper, the physical properties of raw materials, mix ratio design and heat preservation performance, basic mechanical properties of glass lightweight concrete are studied experimentally. At the same time, the thermal performance of concrete with glass light stone used for exterior wall is simulated and analyzed. The main work of this paper is as follows: (1) the physical and mechanical properties of glass lightweight aggregate are tested. The results show that the properties of glass lightweight aggregate meet the requirements of "lightweight aggregate and its test method" GBT17431-2010. It can be used as lightweight aggregate of concrete. (2) according to the principle of orthogonal design, the thermal conductivity and cube compressive strength of 16 groups of glass lightweight concrete with different mix ratio are measured. Based on the analysis of the range and variance of the test data, the influence of various factors on the thermal insulation performance and compressive strength of glass lightweight concrete is obtained. With the increase of cement content, the compressive strength of glass-lightweight concrete is increased, but the insulation effect of concrete is reduced, and the thermal insulation effect of glass-lightweight concrete is enhanced with the increase of the total volume of lightweight aggregate. However, the compressive strength of the concrete is reduced, and the influence of the gradation of coarse aggregate on the compressive strength and thermal conductivity of the glassy lightweight concrete is not obvious. The influence of various factors on the compressive strength of glassy lightweight concrete is as follows: the cement content is the largest, the total volume of lightweight aggregate is the second, and the gradation of lightweight coarse aggregate is the least; The influence of various factors on the thermal conductivity of glassy lightweight concrete is as follows: the gross volume of lightweight aggregate is the largest, the content of cement is the second, and the gradation of coarse aggregate is the least. (3) DeST-h thermal analysis software is used. Taking a residential building in Wuhan area as the research object, the energy consumption calculation model is established. The energy consumption of the room, the system and the whole building during the heating period, the air conditioning period and the whole year are compared and analyzed when the glass light stone concrete, aerated concrete and ordinary concrete are used as the outer wall materials respectively, the room, the system and the whole building are used in the heating period, the air-conditioning period and the whole year. The calculation results show that the energy consumption of glass lightweight concrete exterior wall building and aerated concrete exterior wall building is not different, which indicates that the heat preservation effect of the two insulation systems is the same as that of ordinary concrete exterior wall building. Glass lightweight concrete exterior wall buildings can significantly reduce building energy consumption, especially in the heating energy consumption, the energy saving rate is above 60%, which reflects the good thermal insulation performance of glass lightweight concrete exterior wall system.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU528
本文編號：2291449
[Abstract]:With the increasing global energy problem and China vigorously carrying out wall reform, energy saving and emission reduction policies, the development of new wall materials with waste utilization, energy conservation and insulation, safety and reliability has become the main direction in the construction industry. Several traditional methods of exterior wall insulation engineering have their shortcomings, even the external wall insulation which effectively occupies the mainstream market of building energy conservation in our country also has many shortcomings, such as easy cracking, falling off, poor fire resistance and so on. Waste glass is a kind of garbage produced by people's daily life, which is difficult to dispose and waste resources. Domestic and international research on the application of waste glass as coarse and fine aggregate in concrete and mortar is rich, but the purpose of the research is to achieve the working performance and mechanical strength of concrete and mortar, which has not been involved in crushing. The artificial porous material, waste glass regenerated lightweight stone, which was prepared by combustion, foaming and other processes, was used as lightweight aggregate to prepare glass-light stone concrete. Under this background, it is of great significance to study the properties and theoretical analysis of glass lightweight concrete, a new type of thermal insulation material. Therefore, in this paper, the physical properties of raw materials, mix ratio design and heat preservation performance, basic mechanical properties of glass lightweight concrete are studied experimentally. At the same time, the thermal performance of concrete with glass light stone used for exterior wall is simulated and analyzed. The main work of this paper is as follows: (1) the physical and mechanical properties of glass lightweight aggregate are tested. The results show that the properties of glass lightweight aggregate meet the requirements of "lightweight aggregate and its test method" GBT17431-2010. It can be used as lightweight aggregate of concrete. (2) according to the principle of orthogonal design, the thermal conductivity and cube compressive strength of 16 groups of glass lightweight concrete with different mix ratio are measured. Based on the analysis of the range and variance of the test data, the influence of various factors on the thermal insulation performance and compressive strength of glass lightweight concrete is obtained. With the increase of cement content, the compressive strength of glass-lightweight concrete is increased, but the insulation effect of concrete is reduced, and the thermal insulation effect of glass-lightweight concrete is enhanced with the increase of the total volume of lightweight aggregate. However, the compressive strength of the concrete is reduced, and the influence of the gradation of coarse aggregate on the compressive strength and thermal conductivity of the glassy lightweight concrete is not obvious. The influence of various factors on the compressive strength of glassy lightweight concrete is as follows: the cement content is the largest, the total volume of lightweight aggregate is the second, and the gradation of lightweight coarse aggregate is the least; The influence of various factors on the thermal conductivity of glassy lightweight concrete is as follows: the gross volume of lightweight aggregate is the largest, the content of cement is the second, and the gradation of coarse aggregate is the least. (3) DeST-h thermal analysis software is used. Taking a residential building in Wuhan area as the research object, the energy consumption calculation model is established. The energy consumption of the room, the system and the whole building during the heating period, the air conditioning period and the whole year are compared and analyzed when the glass light stone concrete, aerated concrete and ordinary concrete are used as the outer wall materials respectively, the room, the system and the whole building are used in the heating period, the air-conditioning period and the whole year. The calculation results show that the energy consumption of glass lightweight concrete exterior wall building and aerated concrete exterior wall building is not different, which indicates that the heat preservation effect of the two insulation systems is the same as that of ordinary concrete exterior wall building. Glass lightweight concrete exterior wall buildings can significantly reduce building energy consumption, especially in the heating energy consumption, the energy saving rate is above 60%, which reflects the good thermal insulation performance of glass lightweight concrete exterior wall system.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU528
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