本文選題：混凝土 + 有機(jī)成膜涂層��； 參考：《中國礦業(yè)大學(xué)》2017年碩士論文

【摘要】：氯離子侵蝕作為混凝土結(jié)構(gòu)發(fā)生破壞最常見的原因之一,嚴(yán)重威脅了混凝土結(jié)構(gòu)的使用,如何阻止氯離子侵蝕混凝土結(jié)構(gòu),保證結(jié)構(gòu)的使用壽命,成為當(dāng)前建筑界的一大重要課題。本文以有機(jī)成膜涂層混凝土為研究對象,通過研究環(huán)氧樹脂面漆、氯化橡膠面漆、聚氨酯面漆結(jié)合環(huán)氧富鋅底漆、環(huán)氧云鐵中間漆構(gòu)成不同的涂層涂刷體系與不同的水灰比結(jié)合后的混凝土的不同老化條件的抗氯鹽侵蝕性能以及涂層老化后的微觀形貌,得到有機(jī)成膜涂層不同老化階段抗氯鹽侵蝕能力同涂層的宏微觀性能退化之間的規(guī)律,建立基于自然氣候條件以及海濱氣候條件的有機(jī)成膜涂層使用預(yù)計(jì)模型,取得的主要研究結(jié)果與結(jié)論如下:1、通過對老化前涂層混凝土的電通量實(shí)驗(yàn)研究,獲得了不同涂層體系的抗氯離子防護(hù)能力。涂刷一遍面漆:聚氨酯環(huán)氧樹脂氯化橡膠。按體系涂刷:聚氨酯氯化橡膠環(huán)氧樹脂。增加涂刷底漆等,可以提高涂層混凝土的抗氯離子侵蝕能力�？紤]成本,最優(yōu)的涂層體系為一遍底漆+一遍聚氨酯面漆。采用表面敷設(shè)有機(jī)涂層措施提高混凝土耐久性時,需考慮混凝土自身抗氯離子擴(kuò)散性能的影響。2、通過對老化后涂層混凝土的電通量實(shí)驗(yàn)研究:發(fā)現(xiàn)環(huán)氧樹脂涂層體系紫外老化后,混凝土的電通量值隨老化時間在逐漸增大,混凝土電通量隨環(huán)氧樹脂涂層體系厚度的增加在呈指數(shù)型函數(shù)降低;自然大氣暴露條件和自然海濱暴露條件下,各種涂層體系對混凝土的防護(hù)效果均為:聚氨酯氯化橡膠環(huán)氧樹脂,且漆膜越厚,涂層的防護(hù)效果越好。電通量實(shí)驗(yàn)作為實(shí)驗(yàn)室加速測定混凝土抗氯離子滲透性能的方法與實(shí)際環(huán)境氯離子侵蝕有很好的對應(yīng)性,可以相對真實(shí)地反映涂層對混凝土的防護(hù)效果。3、根據(jù)實(shí)驗(yàn)數(shù)據(jù),回歸分析了混凝土電通量與老化時間的函數(shù)關(guān)系,找到了預(yù)測不同涂層體系厚度在不同使用地區(qū)的壽命預(yù)測方法。相對于自然大氣老化,紫外老化的平均加速效應(yīng)約為13.31倍,海濱暴露老化的平均加速效應(yīng)約為1.667倍。對涂層老化前后宏觀變化程度和微觀形貌的分析發(fā)現(xiàn):有機(jī)成膜涂層的抗氯離子防護(hù)能力隨著涂層老化的衰減原因在于涂層降解腐蝕造成了缺陷的產(chǎn)生以及發(fā)展。4、根據(jù)涂層使用壽命以及涂層體系的花費(fèi),得到各涂層體系的年平均花費(fèi),其中底漆+中漆+2遍聚氨酯面漆涂層體系的年平均花費(fèi)最低,在不考慮人工成本的前提下,此涂刷體系最為經(jīng)濟(jì)。
[Abstract]:Chloride ion erosion is one of the most common causes of concrete structure damage, which seriously threatens the use of concrete structure. How to prevent chloride ion from eroding concrete structure and ensure the service life of concrete structure. It has become an important subject in the construction field. In this paper, organic film-forming coated concrete was studied. Epoxy resin topcoat, chlorinated rubber topcoat, polyurethane topcoat combined with epoxy zinc-rich primer were studied. Different coating systems combined with different water-cement ratio, the corrosion resistance of concrete under different aging conditions and the microstructure of the coating after aging were studied. The rules between the resistance to chloride erosion and the degradation of macro and micro properties of organic film forming coatings at different aging stages were obtained. A prediction model of organic film forming coatings was established based on natural climate conditions and coastal climate conditions. The main research results and conclusions are as follows: 1. Through the experimental study on the electrical flux of the coating concrete before aging, the anti-chloride protection ability of different coating systems is obtained. Paint: polyurethane epoxy resin chlorinated rubber. Paint according to system: polyurethane chlorinated rubber epoxy resin. With the addition of primer, the corrosion resistance of the coated concrete can be improved. Considering the cost, the best coating system is one-pass primer and one-pass polyurethane topcoat. When using organic coating on the surface to improve the durability of concrete, Considering the influence of concrete itself on chloride diffusion resistance, through the experimental study on the electric flux of the aged coated concrete, it is found that the electric flux value of the concrete increases with aging time after UV aging of epoxy resin coating system. The electric flux of concrete decreases with the increase of the thickness of epoxy resin coating system. The protective effects of various coating systems on concrete are as follows: polyurethane chlorinated rubber epoxy resin, and the thicker the coating film, the better the protective effect of the coating. As a method of accelerating the measurement of chloride permeation resistance of concrete in laboratory, the electric flux test has a good correspondence with the actual environment chloride ion erosion, and can reflect the protective effect of coating on concrete relatively truth.According to the experimental data, By regression analysis, the relationship between the electric flux of concrete and the aging time is analyzed, and the life prediction method of different coating system thickness in different service area is found. Compared with natural atmospheric aging, the average accelerated effect of ultraviolet aging is about 13.31 times, and that of coastal exposure aging is about 1.667 times. The analysis of the macroscopic change degree and microcosmic morphology before and after the aging of the coating shows that the decay of the resistance to chloride ion of the organic film coating with the aging of the coating is due to the production and development of the defects caused by the degradation and corrosion of the coating. Based on the service life of the coating and the cost of the coating system, The average annual cost of each coating system was obtained, and the average annual cost of the two-pass polyurethane coating system in primer was the lowest, which was the most economical without the consideration of labor cost.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU528

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 羅會文;陽磊;;海港工程鋼筋混凝土結(jié)構(gòu)表面防腐材料的合理選用[J];施工技術(shù);2016年S2期

2 孫叢濤;康莉萍;趙霞;李偉華;;混凝土涂層的抗?jié)B性能[J];硅酸鹽通報(bào);2016年05期

3 劉芳;王元綱;關(guān)博文;劉狀壯;;表面涂層對混凝土抗氯離子侵蝕的試驗(yàn)研究[J];混凝土;2014年03期

4 陳雷;劉東;周吉;余劍英;;海工混凝土防腐涂層耐老化性能的研究[J];新型建筑材料;2013年11期

5 李果;雷明;楊璞;趙文強(qiáng);王博陽;;老化對涂層混凝土抗碳化性能的影響[J];徐州工程學(xué)院學(xué)報(bào)(自然科學(xué)版);2013年02期

6 鄭愛剛;楊光;許文;王璇;;氯化橡膠涂層人工加速條件下的老化機(jī)理[J];宇航材料工藝;2011年04期

7 徐愛敏;國建飛;張桓;呂忠達(dá);楊小剛;;海工混凝土涂料的性能檢測與對比研究[J];現(xiàn)代涂料與涂裝;2011年07期

8 張順淇;錢佳;張恒;孫杏蕾;;油墨氙燈加速耐光性試驗(yàn)與自然曝曬試驗(yàn)相關(guān)性的研究[J];印刷技術(shù);2011年14期

9 蓋盼盼;姜琳琳;劉超;向佳瑜;;混凝土防護(hù)涂層研究進(jìn)展[J];上海涂料;2011年05期

10 袁宏輝;孫杏蕾;張恒;;氙燈老化與自然曝曬測試所得顏料耐候性的相關(guān)性[J];中國涂料;2009年12期

相關(guān)碩士學(xué)位論文 前9條

1 姚峰;PHC管樁混凝土加速養(yǎng)護(hù)負(fù)效應(yīng)改進(jìn)措施研究[D];中國礦業(yè)大學(xué);2016年

2 劉瑞雪;干濕循環(huán)下混凝土的氯離子滲透性能及涂層防護(hù)作用研究[D];中國礦業(yè)大學(xué);2014年

3 王國醒;抗氯鹽高性能混凝土表層處理技術(shù)對比研究[D];華南理工大學(xué);2012年

4 許星鑫;海工混凝土表面滲透型有機(jī)硅防護(hù)涂料耐久性研究[D];武漢理工大學(xué);2012年

5 秦靚;海工混凝土表面成膜型防護(hù)涂料耐久性研究[D];武漢理工大學(xué);2012年

6 任志威;混凝土表面有機(jī)/無機(jī)復(fù)合耐腐蝕涂層[D];浙江大學(xué);2012年

7 孫學(xué)志;滲透結(jié)晶型涂料對混凝土保護(hù)層性能影響的研究[D];南京林業(yè)大學(xué);2008年

8 楊麗霞;有機(jī)重防蝕涂層耐蝕性能研究[D];機(jī)械科學(xué)研究院;2002年

9 趙全勝;大摻量粉煤灰混凝土在工程中的應(yīng)用研究[D];河北工業(yè)大學(xué);2002年

，

本文編號：2075856