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1、混凝土裂縫的成因與控制摘要混凝土的裂縫問題是一個普遍存在而又難于解決的工程實(shí)際問題。?本文從設(shè)計(jì)、材料、配合比、施工現(xiàn)場養(yǎng)護(hù)等方面對混凝土工程中常見的一些裂縫的成因進(jìn)行了分析探討。針對混凝土裂縫產(chǎn)生的原因,在混凝土結(jié)構(gòu)設(shè)計(jì)、混凝土材料選擇、配合比優(yōu)化、以及施工現(xiàn)場的養(yǎng)護(hù)等方面提出了控制裂縫發(fā)展的措施。?依據(jù)相關(guān)文獻(xiàn),并總結(jié)了混凝土裂縫的處理方法:表面處理法、填充法、灌漿法、結(jié)構(gòu)補(bǔ)強(qiáng)法、混凝土置換法、仿生自愈合法等。???關(guān)鍵詞:混凝土;?裂縫;?成因;控制;AbstractThe?problem?o
2、f?the?concrete?crack?is?a?common?and?difficult?to?solve?practical?engineering?problem.?In?this?paper,?from?the?design,?material,?mix?ratio,?construction?site?maintenance?and?other?causes?of?common?cracks?in?concrete?engineering?are?discussed.?Reasons?f
3、or?concrete?cracks,?the?concrete?structure?design,?material?selection,concrete?mix?design,?and?construction?site?maintenance?and?other?aspects?of?the?development?of?the?crack?control?measures.?According?to?the?related?literature,?and?summarized?the?tre
4、atment?method?of?concrete?crack:?surface?treatment?method,?filling?method,?grouting?method,?structure?method?of?reinforcement,?concrete?replacement?method,?bionic?self-healing.???Keywords:?concrete;?crack;?cause;?control;目錄摘要?··························
5、·······················?IAbstract?·············································??II?1??概述?···············································?1?1.1?課題的提出?........................................?1?1.2?本論文的研究內(nèi)容?........................··········?1?1.3本論文的研究
6、方法?...................................?1?2??裂縫的成因?··························.............32.1?設(shè)計(jì)原因?.........................................?3?2.2?材料原因?..........................................?3?2.3?混凝土配合比設(shè)計(jì)原因?.........................?4?2.4?施工及現(xiàn)場養(yǎng)護(hù)原
7、因?...........................?4?2.5使用原因(外界因素)?.......................?4?3??裂縫的控制措施?························?6?3.1?設(shè)計(jì)方面?.................................?6?3.1.1?設(shè)計(jì)中的‘抗’與‘放’?....................?6?3.1.2盡量避免結(jié)構(gòu)斷面突變帶來應(yīng)力集中?..............?6?3.1.3采用補(bǔ)償收縮混凝土技術(shù)?
8、................?6?3.1.4?設(shè)計(jì)上要注意容易開裂部位?.........?6?3.2?材料選擇?...........................?7?3.3?混凝土配合比設(shè)計(jì)?....................?7?3.4?施工方面?.............................?8?3.4.1?模板的安裝及拆除?................?8?3.4.2?混凝土的制備?.............?8?3.4.3?混