本文選題：寒冷地區(qū) + 加氣混凝土自保溫體系�。� 參考：《山東建筑大學(xué)》2013年碩士論文

【摘要】：砂加氣混凝土砌塊由于具備質(zhì)量輕、保溫性能好、加工性能出色等一系列優(yōu)點(diǎn)而備受建筑行業(yè)的重視,并逐步成為建筑自保溫體系的首選墻體材料。但是國(guó)內(nèi)規(guī)范對(duì)墻體導(dǎo)熱系數(shù)修正系數(shù)取值不同,導(dǎo)致墻體傳熱系數(shù)計(jì)算值與工程實(shí)際差異較大；砂加氣混凝土單一材料自保溫墻體在寒冷地區(qū)的節(jié)能設(shè)計(jì)研究較少；且實(shí)際工程中加氣混凝土砌塊自保溫墻體外飾面經(jīng)常出現(xiàn)開(kāi)裂,抹灰層大面積龜裂和局部起鼓、脫落等現(xiàn)象。以上問(wèn)題的存在限制了砂加氣混凝土自保溫墻體在寒冷地區(qū)的推廣應(yīng)用。 本文在對(duì)砂加氣混凝土自保溫墻體的國(guó)內(nèi)外研究現(xiàn)狀進(jìn)行調(diào)研的基礎(chǔ)上,針對(duì)工程應(yīng)用中存在的問(wèn)題,首先通過(guò)熱工計(jì)算,分析了導(dǎo)熱系數(shù)修正系數(shù)對(duì)加氣混凝土砌塊自保溫墻體節(jié)能設(shè)計(jì)的影響,并根據(jù)墻體厚度、砂漿類(lèi)型、灰縫厚度與灰縫構(gòu)造的不同,設(shè)計(jì)了6組加氣混凝土自保溫墻體試件,采用防護(hù)熱箱法對(duì)墻體的導(dǎo)熱系數(shù)修正系數(shù)進(jìn)行試驗(yàn)研究,研究結(jié)果表明：專(zhuān)用砌筑砂漿薄灰縫(3-4mm)墻體導(dǎo)熱系數(shù)修正系數(shù)為1.05;普通水泥砂漿砌筑墻體(灰縫厚度10～11mm)導(dǎo)熱系數(shù)修正系數(shù)為1.26。為滿(mǎn)足墻體保溫性能的要求,建議寒冷地區(qū)砂加氣自保溫墻體灰縫厚度控制在3-4mm之間,灰縫材料應(yīng)采用專(zhuān)業(yè)砌筑砂漿,對(duì)于普通砌筑砂漿砌筑的自保溫砌塊墻體,建議采取一定的灰縫構(gòu)造措施,如灰縫開(kāi)槽并填充填充聚氨酯,以滿(mǎn)足墻體的熱工性能要求。 在加氣混凝土自保溫墻體導(dǎo)熱系數(shù)修正系數(shù)研究的基礎(chǔ)上,采用天正節(jié)能分析軟件TBEC,對(duì)寒冷地區(qū)公共建筑與住宅兩個(gè)工程實(shí)例進(jìn)行自保溫墻體節(jié)能設(shè)計(jì)研究,探討了單一材料加氣混凝土自保溫墻體在寒冷地區(qū)應(yīng)用的技術(shù)可行性,并通過(guò)對(duì)墻體導(dǎo)熱系數(shù)修正系數(shù)、墻體厚度、熱橋保溫層厚度的參數(shù)化分析,研究了導(dǎo)熱系數(shù)修正系數(shù)對(duì)建筑節(jié)能設(shè)計(jì)的影響,提出了寒冷地區(qū)B04自保溫外墻與熱橋保溫層的經(jīng)濟(jì)厚度。在此基礎(chǔ)上,通過(guò)加氣混凝土自保溫墻體與原外墻外保溫體系的單位面積造價(jià)分析,探討了加氣混凝土自保溫墻體在寒冷地區(qū)應(yīng)用的經(jīng)濟(jì)可行性。 對(duì)加氣混凝土砌塊自保溫墻體飾面技術(shù)進(jìn)行了調(diào)研,分析了目前飾面技術(shù)存在的問(wèn)題,并通過(guò)對(duì)不同飾面處理?xiàng)l件下的加氣混凝土砌體進(jìn)行不透水性試驗(yàn)與系統(tǒng)吸水量試驗(yàn),研究了加氣混凝土砌塊墻體不同構(gòu)造飾面的抗裂防滲能力,提出了適用于了加氣混凝土自保溫墻體的飾面構(gòu)造做法,并對(duì)影響加氣混凝土砌塊墻體抗裂防滲能力的主要因素進(jìn)行了分析,提出了飾面材料技術(shù)要求、墻體砌筑原則及交界面處理構(gòu)造。
[Abstract]:Sand aerated concrete block has a series of advantages, such as light weight, good thermal insulation performance, excellent processing performance and so on, which has attracted much attention of the construction industry, and has gradually become the first choice of wall materials for building self-insulation system. However, the calculation value of wall heat transfer coefficient is different from that of engineering practice, and the energy saving design of single material self-insulation wall of sand aerated concrete in cold region is less. In practical projects, cracks often occur on the exterior veneer of self-insulating wall of aerated concrete blocks, large area cracks of plastering layer and local bulging and shedding. The above problems limit the application of sand-aerated concrete self-insulation wall in cold area. Based on the investigation of the domestic and international research status of sand aerated concrete self-insulating wall, this paper aims at the existing problems in engineering application, first of all, through thermal calculation, The influence of heat conductivity correction coefficient on energy saving design of aerated concrete block self-insulating wall is analyzed. According to the difference of wall thickness, mortar type, ash joint thickness and ash joint structure, six groups of aerated concrete self-insulating wall specimens are designed. The modified coefficient of thermal conductivity of wall is tested and studied by using the method of protective heat box. The results show that the modified coefficient of thermal conductivity of special masonry mortar thin ash joint (3-4mm) wall is 1.05, and that of ordinary cement mortar masonry wall (10~11mm) is 1.26. In order to meet the requirement of wall insulation performance, it is suggested that the thickness of ash joint of sand aerated self-insulating wall in cold area should be controlled between 3-4mm, and the cement joint material should be made of professional masonry mortar, and for the self-insulating block wall of ordinary masonry mortar masonry, it is suggested that the thickness of ash joint of the wall should be controlled in the range of 3-4mm. It is suggested that some measures should be taken, such as slotted ash joints and filled with polyurethane, to meet the requirements of the thermal properties of the wall. On the basis of the research on the coefficient of heat conductivity correction of aerated concrete self-insulating wall, the energy saving design of self-insulating wall in cold area is studied by using TBEC-TBEC. two examples of public buildings and residential buildings in cold area are studied. This paper discusses the technical feasibility of the application of air-filled concrete self-insulating wall with single material in cold region, and through the parameterized analysis of wall heat conductivity coefficient, wall thickness and thermal bridge insulation layer thickness. The influence of the modified coefficient of thermal conductivity on the design of building energy saving is studied. The economic thickness of B04 self-insulating exterior wall and thermal bridge insulation layer in cold area is put forward. On this basis, through the unit area cost analysis of aerated concrete self-insulation wall and external insulation system of external wall, the economic feasibility of application of aerated concrete self-insulation wall in cold area is discussed. This paper investigates the technology of self-insulating wall facing of aerated concrete block, analyzes the problems existing in the finishing technology at present, and carries out water impermeability test and system water absorption test of aerated concrete masonry under different finishing conditions. In this paper, the anti-crack and anti-seepage ability of different structural finishes of aerated concrete block wall is studied, and the construction method of veneer suitable for self-insulation wall of aerated concrete is put forward. The main factors affecting the anti-crack and anti-seepage ability of aerated concrete block wall are analyzed, and the technical requirements of facing material, the principle of wall masonry and the structure of interface treatment are put forward.
【學(xué)位授予單位】：山東建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TU111.4

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