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2020二级建造师市政实务考点知识: 混凝土施工

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泛亚体育  BUZHIBUJUEYIJINGDAOLEBEIKAOFUXIDEZUIHOUJIEDUAN,WEILEZUOHAOBEIKAOFUXI,XIAMIANYOUCHUGUOLIUXUEWANGXIAOBIANWEINIJINGXINZHUNBEILE“2020ERJIJIANZAOSHISHIZHENGSHIWUKAODIANZHISHI: HUNNINGTUSHIGONG”,CHIXUGUANZHUBENZHANJIANGKEYICHIXUHUOQUGENGDUODEKAOSHIZIXUN!

  2020二级建造师市政实务考点知识: 混凝土施工

  混凝土施工

  HUNNINGTUDESHIGONGBAOKUOYUANCAILIAODEJILIANG,HUNNINGTUDEJIAOBAN、YUNSHU、JIAOZHUHEHUNNINGTUYANGHUDENGNEIRONG。

  (一)原材料计量

  GEZHONGJILIANGQIJUYINGANJILIANGFADEGUIDINGDINGQIJIANDING,BAOCHIJILIANGZHUNQUE。ZAIHUNNINGTUSHENGCHANGUOCHENGZHONG,YINGZHUYIKONGZHIYUANCAILIAODEJILIANGPIANCHA。DUISHASHILIAODEHANSHUILVDEJIANCE,MEIYIGONGZUOBANBUYINGSHAOYUYICI。YUQISHIGONGYINGZENGJIACEDINGCISHU,GENJUSHASHILIAOSHIJIHANSHUILIANGDIAOZHENGSHASHILIAOHESHUIDEYONGLIANG。

  (二)混凝土搅拌、运输和浇筑

  1.混凝土搅拌

  HUNNINGTUBANHEWUYINGJUNYUN,YANSEYIZHI,BUDEYOULIXIHEMISHUIXIANXIANG。JIAOBANSHIJIANSHIHUNNINGTUBANHESHIDEZHONGYAOKONGZHICANSHU,SHIYONGJIXIEJIAOBANSHI,ZIQUANBUCAILIAOZHUANGRUJIAOBANJIKAISHIJIAOBANQI,ZHIKAISHIXIELIAOSHIZHI,YANXUJIAOBANDEZUIDUANSHIJIANYINGFUHEBIAO2K312014DEGUIDING。

混凝土最短搅拌时间表
搅拌机类型

JIAOBANJIRONGLIANG(L)

混凝土坍落度(mm)
<3030~70>70

泛亚体育HUNNINGTUZUIDUANJIAOBANSHIJIAN(min)

强制式≤4001.51.01.0
≤15002.51.51.5

  注: 泛亚体育当掺入外加剂时,外加剂应调成适当浓度的溶液再掺入,搅拌时间宜延长;

  CAIYONGFENCITOULIAOJIAOBANGONGYISHI,JIAOBANSHIJIANYINGANGONGYIYAOQIUBANLI;

  DANGCAIYONGQITAXINGSHIDEJIAOBANSHEBEISHI,JIAOBANDEZUIDUANSHIJIANYINGANSHEBEISHUOMINGSHUDEGUIDINGBANLI,HUOJINGSHIYANQUEDING。

泛亚体育  HUNNINGTUBANHEWUDETANLUODUYINGZAIJIAOBANDIDIANHEJIAOZHUDIDIANFENBIESUIJIQUYANGJIANCE。MEIYIGONGZUOBANHUOMEIYIDANYUANJIEGOUWUBUYINGSHAOYULIANGCI。PINGDINGSHIYINGYIJIAOZHUDIDIANDECEZHIWEIZHUN。RUHUNNINGTUBANHEWUCONGJIAOBANJICHULIAOQIZHIJIAOZHURUMODESHIJIANBUCHAOGUO15minSHI,QITANLUODUKEJINZAIJIAOBANDIDIANJIANCE。ZAIJIANCETANLUODUSHI,HAIYINGGUANCHAHUNNINGTUBANHEWUDENIANJUXINGHEBAOSHUIXING。

  2.混凝土运输

  (1)HUNNINGTUDEYUNSHUNENGLIYINGMANZUHUNNINGTUNINGJIESUDUHEJIAOZHUSUDUDEYAOQIU,SHIJIAOZHUGONGZUOBUJIANDUAN。

泛亚体育  (2)YUNSONGHUNNINGTUBANHEWUDERONGQIHUOGUANDAOYINGBULOUJIANG、BUXISHUI,NEIBIGUANGHUAPINGZHENG,NENGBAOZHENGXIELIAOJISHUSONGCHANGTONG。

  (3)HUNNINGTUBANHEWUZAIYUNSHUGUOCHENGZHONG,YINGBAOCHIJUNYUNXING,BUCHANSHENGFENCENG、LIXIDENGXIANXIANG,RUCHUXIANFENCENG、LIXIXIANXIANG,ZEYINGDUIHUNNINGTUBANHEWUJINXINGERCIKUAISUJIAOBAN。

  (4)HUNNINGTUBANHEWUYUNSHUDAOJIAOZHUDIDIANHOU,YINGANGUIDINGJIANCEQITANLUODU,TANLUODUYINGFUHESHEJIYAOQIUHESHIGONGGONGYIYAOQIU。

  (5)YUBANHUNNINGTUZAIXIELIAOQIANXUYAOCHANJIAWAIJIAJISHI,WAIJIAJIDECHANLIANGYINGANPEIHEBITONGZHISHUZHIXING。CHANRUWAIJIAJIHOU,YINGKUAISUJIAOBAN,JIAOBANSHIJIANYINGGENJUSHIYANQUEDING。

  (6)YANJINZAIYUNSHUGUOCHENGZHONGXIANGHUNNINGTUBANHEWUZHONGJIASHUI。

  (7)CAIYONGBENGSONGHUNNINGTUSHI,YINGBAOZHENGHUNNINGTUBENGLIANXUGONGZUO,SHOULIAODOUYINGYOUZUGOUDEHUNNINGTU。BENGSONGJIANXIESHIJIANBUYICHAOGUO15min。

  3.混凝土浇筑

  (1)浇筑前的检查

  JIAOZHUHUNNINGTUQIAN,YINGJIANCHAMOBAN、ZHIJIADECHENGZAILI、GANGDU、WENDINGXING,JIANCHAGANGJINJIYUMAIJIANDEWEIZHI、GUIGE,BINGZUOHAOJILU,FUHESHEJIYAOQIUHOUFANGKEJIAOZHU。ZAIYUANHUNNINGTUMIANSHANGJIAOZHUXINHUNNINGTUSHI,XIANGJIEMIANYINGZAOMAO,BINGQINGXIGANJING,BIAOMIANSHIRUNDANBUDEYOUJISHUI。

  (2)混凝土浇筑

  1)HUNNINGTUYICIJIAOZHULIANGYAOSHIYINGGESHIGONGHUANJIEDESHIJINENGLI,YIBAOZHENGHUNNINGTUDELIANXUJIAOZHU。DUIYUDAFANGLIANGHUNNINGTUJIAOZHU,YINGSHIXIANZHIDINGJIAOZHUFANGAN。

泛亚体育  2)HUNNINGTUYUNSHU、JIAOZHUJIJIANXIEDEQUANBUSHIJIANBUYINGCHAOGUOHUNNINGTUDECHUNINGSHIJIAN。TONGYISHIGONGDUANDEHUNNINGTUYINGLIANXUJIAOZHU,BINGYINGZAIDICENGHUNNINGTUCHUNINGZHIQIANJIANGSHANGYICENGHUNNINGTUJIAOZHUWANBI。

泛亚体育  3)CAIYONGZHENDAOQIZHENDAOHUNNINGTUSHI,MEIYIZHENDIANDEZHENDAOYANXUSHIJIAN,YINGYIHUNNINGTUBIAOMIANCHENGXIANFUJIANG、BUCHUXIANQIPAOHEBUZAICHENLUOWEIZHUN。

  (三)混凝土养护

  泛亚体育(1)一般混凝土浇筑完成后,应在收浆后尽快予以覆盖和洒水养护。对干硬性混凝土、炎热天气浇筑的混凝土、大面积裸露的混凝土,有条件的可在浇筑完成后立即加设棚罩,待收浆后再予以覆盖和养护。

  (2)SASHUIYANGHUDESHIJIAN,CAIYONGGUISUANYANSHUINI、PUTONGGUISUANYANSHUINIHUOKUANGZHAGUISUANYANSHUINIDEHUNNINGTU,BUDESHAOYU7d。CHANYONGHUANNINGXINGWAIJIAJIHUOYOUKANGSHENDENGYAOQIUYIJIGAOQIANGDUHUNNINGTU,BUSHAOYU14d。SHIYONGZHENKONGXISHUIDEHUNNINGTU,KEZAIBAOZHENGQIANGDUTIAOJIANXIASHIDANGSUODUANYANGHUSHIJIAN。CAIYONGTUSHUABOMOYANGHUJIYANGHUSHI,YANGHUJIYINGTONGGUOSHIYANQUEDING,BINGYINGZHIDINGCAOZUOGONGYI。CAIYONGSULIAOMOFUGAIYANGHUSHI,YINGZAIHUNNINGTUJIAOZHUWANCHENGHOUJISHIFUGAIYANMI,BAOZHENGMONEIYOUZUGOUDENINGJIESHUI。

泛亚体育  (3)DANGQIWENDIYU5℃SHI,YINGCAIQUBAOWENCUOSHI,BUDEDUIHUNNINGTUSASHUIYANGHU。(TONGDATIJIHUNNINGTUYAOQIU)

  推荐阅读:

  2020二级建造师建筑实务考点知识: 混凝土工程

  二级建造师2020建筑实务考点知识: 混凝土的强度

  2020二级建造师市政实务考点知识: 管道与孔道


报名入口 准考证打印入口 考试时间 备考辅导 二建考试题库

  想了解更多二级建造师备考辅导网的资讯,请访问: 二级建造师备考辅导泛亚体育

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