安徽理工大學(xué)土木樓施工進(jìn)度管理及乳膠粉對砂漿性能的影響
發(fā)布時間：2018-07-17 19:54
【摘要】：近年來隨著經(jīng)濟的快速發(fā)展,我國對人才需求量越來越大,但許多高�；A(chǔ)設(shè)施落后,為提高辦學(xué)質(zhì)量、科研水平,建設(shè)新校區(qū)是解決高校發(fā)展瓶頸的有效手段。本文在此背景下,以安徽理工大學(xué)新校區(qū)土木樓為例,研究了現(xiàn)代施工進(jìn)度管理技術(shù),根據(jù)工程特點、技術(shù)難點,提出保證進(jìn)度的措施,根據(jù)工程資源條件,編制了施工進(jìn)度,繪制甘特圖。根據(jù)施工現(xiàn)場外墻保溫工程,針對外墻保溫砂漿存在的缺陷,提出使用乳膠粉對外墻保溫砂漿進(jìn)行改性處理,并進(jìn)行了不同乳膠粉摻量下外墻保溫砂漿的抗折、抗?jié)B和抗裂性能試驗,探討能夠同時滿足抗折、抗?jié)B和抗裂要求的較優(yōu)乳膠粉摻量,為現(xiàn)場施工提供一定的試驗基礎(chǔ)。其中,乳膠粉采用內(nèi)摻方式等量替代水泥用量的0%、0.5%、1.5%、3.0%、4.5%和5.5%。主要結(jié)論如下:(1)為保證按期交工,提出了保證措施,設(shè)計變更是設(shè)計階段對施工進(jìn)度影響的最大因素,所以要盡量減少設(shè)計變更。在設(shè)計階段應(yīng)周全考慮工程項目的施工條件,積極與施工方協(xié)調(diào)技術(shù)問題,減少設(shè)計變更給項目進(jìn)度帶來的影響。(2)乳膠粉摻量的增加有助于改善外墻保溫砂漿的脆性;摻加乳膠粉后外墻保溫砂漿的抗折強度均高于普通砂漿,隨著乳膠粉摻量的增加,外墻保溫砂漿的抗折強度呈現(xiàn)出先增加后減小的趨勢,當(dāng)乳膠粉摻量為4.5%時,砂漿的抗折強度為3.02MPa,相比普通砂漿提高了 25%。(3)乳膠粉摻量為0%時,滲水高度達(dá)到150mm,說明未摻加乳膠粉的外墻保溫砂漿抗?jié)B性能較差;當(dāng)乳膠粉摻量達(dá)到1.5%時,抗?jié)B性能有明顯提升,平均滲水高度為81mm,乳膠粉摻量達(dá)到3%時,平均滲水高度最低,僅為57.2mm,能取得較好的抗?jié)B效果;乳膠粉摻量達(dá)到4.5%時,平均滲水高度為62.5mm;乳膠粉摻量為5.5%時,平均滲水高度為135.5mm。因此,乳膠粉摻量在3%-4.5%能取得較好的抗?jié)B效果。(4)乳膠粉摻量為4.5%的抗裂試件抗裂性能優(yōu)于不摻乳膠粉試件。乳膠粉摻量為0%時,肉眼可見裂縫較多,裂縫寬度較大,抗裂效果明顯較差;乳膠粉摻量為0%時最大裂縫寬度為0.7mm,最大裂縫長度為180mm,而乳膠粉摻量為4.5%時,最大裂縫寬度為0.2mm,最大裂縫長度為32mm;乳膠粉對外墻保溫砂漿早期抗裂強度有較好的改善。
[Abstract]:With the rapid development of economy in recent years, the demand for talents in our country is increasing, but many universities' infrastructure is backward. In order to improve the quality of running a school, the level of scientific research, the construction of a new campus is an effective means to solve the bottleneck of the development of colleges and universities. In this context, taking the civil building in the new campus of Anhui University of Technology as an example, the modern construction schedule management technology is studied. According to the characteristics and technical difficulties of the project, the measures to ensure the progress are put forward, and the construction schedule is compiled according to the conditions of the engineering resources. Draw a Gantt chart. According to the external wall insulation engineering of the construction site, aiming at the defects of the external wall insulation mortar, the paper puts forward that the external wall insulation mortar should be modified with latex powder, and the external wall thermal insulation mortar with different emulsion powder content can resist the fracture. The experiment of impermeability and crack resistance is carried out to find out the optimum amount of latex powder which can meet the requirements of anti-fracture, anti-seepage and anti-cracking at the same time, so as to provide a certain test basis for field construction. Among them, the emulsion powder was replaced by the same amount of cement with the same amount of cement, 0.5% and 1.5% and 3.5% and 5.5% respectively. The main conclusions are as follows: (1) in order to ensure the completion of the work on time, the guarantee measures are put forward. The design change is the biggest factor that affects the construction schedule in the design stage, so the design change should be reduced as much as possible. In the design stage, the construction conditions of the project should be considered fully, and the technical problems should be actively coordinated with the constructors to reduce the impact of the design changes on the progress of the project. (2) the increase of latex powder content will help to improve the brittleness of the external wall insulation mortar; The flexural strength of external wall insulation mortar after adding latex powder is higher than that of ordinary mortar. With the increase of emulsion powder content, the flexural strength of external wall insulation mortar increases first and then decreases. The flexural strength of mortar is 3.02 MPa, which is 25% higher than that of ordinary mortar. (3) when the amount of emulsion powder is 0, the permeation height reaches 150 mm, which shows that the external wall insulation mortar without emulsion powder has poor impermeability, and when the amount of emulsion powder reaches 1.5%, The impermeability is obviously improved, the average percolation height is 81mm, when the amount of latex powder reaches 3, the average percolation height is the lowest, only 57.2 mm. The average percolation height was 62.5 mm and the average percolation height was 135.5 mm when the emulsion powder was 5.5 mm. Therefore, a good anti-seepage effect can be obtained when the amount of latex powder is between 3% and 4.5%. (4) the anti-cracking performance of the anti-crack specimen with the content of 4.5% latex powder is better than that of the non-emulsion powder sample. When the amount of latex powder is 0, the cracks are more visible to the naked eye, and the crack width is larger, and the anti-crack effect is obviously poor. The maximum crack width is 0.7 mm, the maximum crack length is 180 mm, and the emulsion powder content is 4.5 mm, when the amount of emulsion powder is 0, the maximum crack width is 0.7 mm, the maximum crack length is 180 mm, and the emulsion powder content is 4.5 mm. The maximum crack width is 0.2 mm and the maximum crack length is 32 mm.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU722;TU578.1
本文編號：2130763
[Abstract]:With the rapid development of economy in recent years, the demand for talents in our country is increasing, but many universities' infrastructure is backward. In order to improve the quality of running a school, the level of scientific research, the construction of a new campus is an effective means to solve the bottleneck of the development of colleges and universities. In this context, taking the civil building in the new campus of Anhui University of Technology as an example, the modern construction schedule management technology is studied. According to the characteristics and technical difficulties of the project, the measures to ensure the progress are put forward, and the construction schedule is compiled according to the conditions of the engineering resources. Draw a Gantt chart. According to the external wall insulation engineering of the construction site, aiming at the defects of the external wall insulation mortar, the paper puts forward that the external wall insulation mortar should be modified with latex powder, and the external wall thermal insulation mortar with different emulsion powder content can resist the fracture. The experiment of impermeability and crack resistance is carried out to find out the optimum amount of latex powder which can meet the requirements of anti-fracture, anti-seepage and anti-cracking at the same time, so as to provide a certain test basis for field construction. Among them, the emulsion powder was replaced by the same amount of cement with the same amount of cement, 0.5% and 1.5% and 3.5% and 5.5% respectively. The main conclusions are as follows: (1) in order to ensure the completion of the work on time, the guarantee measures are put forward. The design change is the biggest factor that affects the construction schedule in the design stage, so the design change should be reduced as much as possible. In the design stage, the construction conditions of the project should be considered fully, and the technical problems should be actively coordinated with the constructors to reduce the impact of the design changes on the progress of the project. (2) the increase of latex powder content will help to improve the brittleness of the external wall insulation mortar; The flexural strength of external wall insulation mortar after adding latex powder is higher than that of ordinary mortar. With the increase of emulsion powder content, the flexural strength of external wall insulation mortar increases first and then decreases. The flexural strength of mortar is 3.02 MPa, which is 25% higher than that of ordinary mortar. (3) when the amount of emulsion powder is 0, the permeation height reaches 150 mm, which shows that the external wall insulation mortar without emulsion powder has poor impermeability, and when the amount of emulsion powder reaches 1.5%, The impermeability is obviously improved, the average percolation height is 81mm, when the amount of latex powder reaches 3, the average percolation height is the lowest, only 57.2 mm. The average percolation height was 62.5 mm and the average percolation height was 135.5 mm when the emulsion powder was 5.5 mm. Therefore, a good anti-seepage effect can be obtained when the amount of latex powder is between 3% and 4.5%. (4) the anti-cracking performance of the anti-crack specimen with the content of 4.5% latex powder is better than that of the non-emulsion powder sample. When the amount of latex powder is 0, the cracks are more visible to the naked eye, and the crack width is larger, and the anti-crack effect is obviously poor. The maximum crack width is 0.7 mm, the maximum crack length is 180 mm, and the emulsion powder content is 4.5 mm, when the amount of emulsion powder is 0, the maximum crack width is 0.7 mm, the maximum crack length is 180 mm, and the emulsion powder content is 4.5 mm. The maximum crack width is 0.2 mm and the maximum crack length is 32 mm.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU722;TU578.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 黃春華;姜彬;歐志華;劉盛;;原材料對聚合物防水砂漿性能的影響[J];硅酸鹽通報;2016年02期
2 楊林;林倩;張冰;劉榮;劉秀偉;;可再分散乳膠粉對磷渣砂漿性能的影響[J];混凝土;2015年05期
3 陶玲;;對聚叔碳酸酯乳膠粉改性水泥砂漿工作性的研究[J];福建建材;2013年05期
4 吳芳;施強;石齊;;外加劑摻量對裝飾砂漿力學(xué)性能影響的試驗研究[J];硅酸鹽通報;2013年01期
5 李建紅;;高層建筑施工組織設(shè)計的編制和加強[J];山西建筑;2012年36期
6 袁國卿;鄭宏杰;;可再分散乳膠粉對抗裂抹面砂漿的影響[J];河南科學(xué);2011年09期
7 李連勇;岳建偉;來強;;外墻保溫抗裂砂漿性能試驗研究[J];河南大學(xué)學(xué)報(自然科學(xué)版);2011年02期
8 李紅衛(wèi);;聚合物改性水泥砂漿影響因素的研究[J];粉煤灰綜合利用;2011年01期
9 陳峗;郭彥麗;;基于關(guān)鍵鏈的公路項目施工進(jìn)度柔性管理[J];長沙理工大學(xué)學(xué)報(社會科學(xué)版);2010年03期
10 林建好;邢燕;;外保溫抗裂砂漿性能試驗研究[J];低溫建筑技術(shù);2010年04期
相關(guān)碩士學(xué)位論文 前10條
1 張蓉蓉;高校圖書館施工組織設(shè)計與外墻抗裂砂漿試驗研究[D];安徽理工大學(xué);2016年
2 任婕;濰坊科技學(xué)院附屬幼兒園建設(shè)項目進(jìn)度管理研究[D];中國海洋大學(xué);2015年
3 呂軍在;新型添加劑對混凝土及混合砂漿面層抗?jié)B性能影響的研究[D];湖南大學(xué);2015年
4 郝相雨;防水抗裂砂漿的試驗研究[D];石家莊鐵道大學(xué);2014年
5 李俊;高速公路施工組織設(shè)計研究[D];西南財經(jīng)大學(xué);2014年
6 莊淼;建筑施工組織設(shè)計常見問題及對策[D];鄭州大學(xué);2013年
7 李偉;基于施工組織設(shè)計優(yōu)化降低施工成本研究[D];清華大學(xué);2013年
8 張彥敏;乳膠粉與纖維素醚對硬化水泥石干縮性能影響的研究[D];河南大學(xué);2012年
9 劉毅;Project軟件在建筑工程項目進(jìn)度優(yōu)化管理中的應(yīng)用[D];河北工程大學(xué);2011年
10 袁國卿;可再分散乳膠粉對水泥砂漿性能的影響[D];鄭州大學(xué);2010年
，本文編號：2130763
本文鏈接：http://sikaile.net/jianzhugongchenglunwen/2130763.html
最近更新
教材專著
