混(Hun)凝(Ning)土(Tu)路(Lu)沿(Yan)石(Shi),(?)也(Ye)称(Cheng)混(Hun)凝(Ning)土(Tu)侧(Ce)石(Shi),(?)是(Shi)用(Yong)混(Hun)凝(Ning)土(Tu)浇(Jiao)筑(Zhu)成(Cheng)型(Xing)的(De)条(Tiao)块(Kuai)状(Zhuang)物(Wu)体(Ti),(?)通(Tong)常(Chang)放(Fang)置(Zhi)在(Zai)道(Dao)路(Lu)边(Bian)缘(Yuan)。(?)混(Hun)凝(Ning)土(Tu)路(Lu)沿(Yan)石(Shi)在(Zai)冬(Dong)季(Ji)施(Shi)工(Gong)需(Xu)要(Yao)注(Zhu)意(Yi)以(Yi)下(Xia)几(Ji)个(Ge)方(Fang)面(Mian),(?)以(Yi)确(Que)保(Bao)施(Shi)工(Gong)质(Zhi)量(Liang)和(He)路(Lu)沿(Yan)石(Shi)的(De)耐(Nai)久(Jiu)性(Xing):(?)
一(Yi)、(?)施(Shi)工(Gong)前(Qian)准(Zhun)备(Bei)
施(Shi)工(Gong)方(Fang)案(An):(?)结(Jie)合(He)工(Gong)程(Cheng)实(Shi)际(Ji)情(Qing)况(Kuang),(?)制(Zhi)定(Ding)详(Xiang)细(Xi)的(De)冬(Dong)季(Ji)施(Shi)工(Gong)方(Fang)案(An),(?)明(Ming)确(Que)施(Shi)工(Gong)方(Fang)法(Fa)、(?)技(Ji)术(Shu)措(Cuo)施(Shi)、(?)质(Zhi)量(Liang)控(Kong)制(Zhi)要(Yao)点(Dian)和(He)安(An)全(Quan)注(Zhu)意(Yi)事(Shi)项(Xiang)等(Deng)。(?)方(Fang)案(An)应(Ying)包(Bao)括(Kuo)混(Hun)凝(Ning)土(Tu)的(De)配(Pei)合(He)比(Bi)设(She)计(Ji)、(?)搅(Jiao)拌(Ban)、(?)运(Yun)输(Shu)、(?)浇(Jiao)筑(Zhu)、(?)养(Yang)护(Hu)等(Deng)各(Ge)个(Ge)环(Huan)节(Jie)的(De)具(Ju)体(Ti)措(Cuo)施(Shi)。(?)
原(Yuan)材(Cai)料(Liao)准(Zhun)备(Bei):(?)
确(Que)保(Bao)水(Shui)泥(Ni)、(?)砂(Sha)石(Shi)、(?)外(Wai)加(Jia)剂(Ji)等(Deng)原(Yuan)材(Cai)料(Liao)的(De)质(Zhi)量(Liang)稳(Wen)定(Ding)。(?)
水(Shui)泥(Ni)应(Ying)优(You)先(Xian)选(Xuan)用(Yong)硅(Gui)酸(Suan)盐(Yan)水(Shui)泥(Ni)或(Huo)普(Pu)通(Tong)硅(Gui)酸(Suan)盐(Yan)水(Shui)泥(Ni),(?)其(Qi)早(Zao)期(Qi)强(Qiang)度(Du)较(Jiao)高(Gao),(?)有(You)利(Li)于(Yu)混(Hun)凝(Ning)土(Tu)在(Zai)低(Di)温(Wen)下(Xia)的(De)强(Qiang)度(Du)发(Fa)展(Zhan)。(?)
砂(Sha)石(Shi)材(Cai)料(Liao)应(Ying)保(Bao)持(Chi)干(Gan)燥(Zao),(?)避(Bi)免(Mian)结(Jie)冰(Bing)和(He)混(Hun)入(Ru)冰(Bing)雪(Xue)。(?)
准(Zhun)备(Bei)足(Zu)够(Gou)的(De)外(Wai)加(Jia)剂(Ji),(?)如(Ru)防(Fang)冻(Dong)剂(Ji)、(?)早(Zao)强(Qiang)剂(Ji)等(Deng),(?)以(Yi)改(Gai)善(Shan)混(Hun)凝(Ning)土(Tu)的(De)性(Xing)能(Neng),(?)使(Shi)其(Qi)适(Shi)应(Ying)冬(Dong)季(Ji)施(Shi)工(Gong)的(De)要(Yao)求(Qiu)。(?)
设(She)备(Bei)检(Jian)修(Xiu):(?)对(Dui)混(Hun)凝(Ning)土(Tu)搅(Jiao)拌(Ban)设(She)备(Bei)、(?)运(Yun)输(Shu)车(Che)辆(Liang)、(?)浇(Jiao)筑(Zhu)设(She)备(Bei)等(Deng)进(Jin)行(Xing)全(Quan)面(Mian)检(Jian)修(Xiu)和(He)保(Bao)养(Yang),(?)确(Que)保(Bao)其(Qi)在(Zai)冬(Dong)季(Ji)施(Shi)工(Gong)期(Qi)间(Jian)能(Neng)够(Gou)正(Zheng)常(Chang)运(Yun)行(Xing)。(?)检(Jian)查(Cha)设(She)备(Bei)的(De)保(Bao)温(Wen)设(She)施(Shi)是(Shi)否(Fou)完(Wan)好(Hao),(?)如(Ru)搅(Jiao)拌(Ban)罐(Guan)的(De)保(Bao)温(Wen)套(Tao)、(?)运(Yun)输(Shu)车(Che)辆(Liang)的(De)保(Bao)温(Wen)帘(Lian)等(Deng)。(?)
人(Ren)员(Yuan)培(Pei)训(Xun):(?)对(Dui)施(Shi)工(Gong)人(Ren)员(Yuan)进(Jin)行(Xing)冬(Dong)季(Ji)施(Shi)工(Gong)技(Ji)术(Shu)培(Pei)训(Xun),(?)使(Shi)其(Qi)了(Liao)解(Jie)冬(Dong)季(Ji)施(Shi)工(Gong)的(De)特(Te)点(Dian)和(He)要(Yao)求(Qiu),(?)掌(Zhang)握(Wo)混(Hun)凝(Ning)土(Tu)施(Shi)工(Gong)的(De)关(Guan)键(Jian)技(Ji)术(Shu)和(He)操(Cao)作(Zuo)方(Fang)法(Fa)。(?)强(Qiang)调(Diao)冬(Dong)季(Ji)施(Shi)工(Gong)的(De)安(An)全(Quan)注(Zhu)意(Yi)事(Shi)项(Xiang),(?)提(Ti)高(Gao)施(Shi)工(Gong)人(Ren)员(Yuan)的(De)安(An)全(Quan)意(Yi)识(Shi)。(?)
二(?)、(?)施(Shi)工(Gong)过(Guo)程(Cheng)中(Zhong)的(De)注(Zhu)意(Yi)事(Shi)项(Xiang)
混(Hun)凝(Ning)土(Tu)拌(Ban)合(He):(?)
根(Gen)据(Ju)气(Qi)温(Wen)条(Tiao)件(Jian),(?)可(Ke)以(Yi)适(Shi)当(Dang)对(Dui)水(Shui)、(?)砂(Sha)石(Shi)等(Deng)原(Yuan)材(Cai)料(Liao)进(Jin)行(Xing)加(Jia)热(Re),(?)以(Yi)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)出(Chu)机(Ji)温(Wen)度(Du)。(?)但(Dan)加(Jia)热(Re)温(Wen)度(Du)应(Ying)控(Kong)制(Zhi)在(Zai)一(Yi)定(Ding)范(Fan)围(Wei)内(Nei),(?)避(Bi)免(Mian)过(Guo)高(Gao)温(Wen)度(Du)对(Dui)水(Shui)泥(Ni)性(Xing)能(Neng)产(Chan)生(Sheng)不(Bu)利(Li)影(Ying)响(Xiang)。(?)水(Shui)温(Wen)不(Bu)宜(Yi)超(Chao)过(Guo)80℃(?),(?)砂(Sha)石(Shi)温(Wen)度(Du)不(Bu)宜(Yi)超(Chao)过(Guo)60℃(?)。(?)水(Shui)泥(Ni)不(Bu)得(De)直(Zhi)接(Jie)加(Jia)热(Re),(?)可(Ke)在(Zai)使(Shi)用(Yong)前(Qian)运(Yun)入(Ru)暖(Nuan)棚(Peng)内(Nei)预(Yu)热(Re)。(?)
冬(Dong)季(Ji)施(Shi)工(Gong)中(Zhong),(?)混(Hun)凝(Ning)土(Tu)的(De)搅(Jiao)拌(Ban)时(Shi)间(Jian)应(Ying)适(Shi)当(Dang)延(Yan)长(Chang),(?)一(Yi)般(Ban)比(Bi)常(Chang)温(Wen)施(Shi)工(Gong)时(Shi)延(Yan)长(Chang)50%左(Zuo)右(You),(?)以(Yi)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)搅(Jiao)拌(Ban)均(Jun)匀(Yun)。(?)搅(Jiao)拌(Ban)时(Shi)应(Ying)注(Zhu)意(Yi)观(Guan)察(Cha)混(Hun)凝(Ning)土(Tu)的(De)和(He)易(Yi)性(Xing),(?)如(Ru)有(You)异(Yi)常(Chang)应(Ying)及(Ji)时(Shi)调(Diao)整(Zheng)配(Pei)合(He)比(Bi)或(Huo)采(Cai)取(Qu)其(Qi)他(Ta)措(Cuo)施(Shi)。(?)
混(Hun)凝(Ning)土(Tu)运(Yun)输(Shu):(?)
根(Gen)据(Ju)气(Qi)温(Wen)和(He)运(Yun)输(Shu)距(Ju)离(Li)合(He)理(Li)确(Que)定(Ding)混(Hun)凝(Ning)土(Tu)的(De)运(Yun)输(Shu)时(Shi)间(Jian),(?)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)在(Zai)浇(Jiao)筑(Zhu)前(Qian)的(De)温(Wen)度(Du)不(Bu)低(Di)于(Yu)5℃(?)。(?)
当(Dang)气(Qi)温(Wen)较(Jiao)低(Di)时(Shi),(?)可(Ke)以(Yi)适(Shi)当(Dang)加(Jia)快(Kuai)运(Yun)输(Shu)速(Su)度(Du),(?)但(Dan)要(Yao)注(Zhu)意(Yi)安(An)全(Quan)。(?)
混(Hun)凝(Ning)土(Tu)浇(Jiao)筑(Zhu):(?)
在(Zai)浇(Jiao)筑(Zhu)混(Hun)凝(Ning)土(Tu)前(Qian),(?)应(Ying)清(Qing)理(Li)模(Mo)板(Ban)和(He)钢(Gang)筋(Jin)上(Shang)的(De)冰(Bing)雪(Xue)和(He)污(Wu)垢(Gou),(?)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)与(Yu)模(Mo)板(Ban)、(?)钢(Gang)筋(Jin)之(Zhi)间(Jian)的(De)粘(Zhan)结(Jie)力(Li)。(?)
尽(Jin)量(Liang)选(Xuan)择(Ze)在(Zai)白(Bai)天(Tian)温(Wen)度(Du)较(Jiao)高(Gao)时(Shi)进(Jin)行(Xing)混(Hun)凝(Ning)土(Tu)浇(Jiao)筑(Zhu),(?)以(Yi)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)浇(Jiao)筑(Zhu)温(Wen)度(Du)。(?)当(Dang)浇(Jiao)筑(Zhu)温(Wen)度(Du)较(Jiao)低(Di)时(Shi),(?)可(Ke)以(Yi)采(Cai)用(Yong)加(Jia)热(Re)浇(Jiao)筑(Zhu)部(Bu)位(Wei)、(?)预(Yu)热(Re)模(Mo)板(Ban)等(Deng)措(Cuo)施(Shi)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)入(Ru)模(Mo)温(Wen)度(Du),(?)但(Dan)入(Ru)模(Mo)温(Wen)度(Du)不(Bu)宜(Yi)超(Chao)过(Guo)10℃(?)。(?)
冬(Dong)季(Ji)施(Shi)工(Gong)中(Zhong),(?)混(Hun)凝(Ning)土(Tu)的(De)浇(Jiao)筑(Zhu)应(Ying)采(Cai)用(Yong)分(Fen)层(Ceng)浇(Jiao)筑(Zhu)的(De)方(Fang)法(Fa),(?)每(Mei)层(Ceng)浇(Jiao)筑(Zhu)厚(Hou)度(Du)不(Bu)宜(Yi)超(Chao)过(Guo)30cm,(?)以(Yi)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)的(De)密(Mi)实(Shi)性(Xing)和(He)均(Jun)匀(Yun)性(Xing)。(?)分(Fen)层(Ceng)浇(Jiao)筑(Zhu)时(Shi),(?)应(Ying)在(Zai)前(Qian)一(Yi)层(Ceng)混(Hun)凝(Ning)土(Tu)初(Chu)凝(Ning)前(Qian)浇(Jiao)筑(Zhu)下(Xia)一(Yi)层(Ceng)混(Hun)凝(Ning)土(Tu),(?)避(Bi)免(Mian)出(Chu)现(Xian)冷(Leng)缝(Feng)。(?)
混(Hun)凝(Ning)土(Tu)养(Yang)护(Hu):(?)混(Hun)凝(Ning)土(Tu)浇(Jiao)筑(Zhu)后(Hou),(?)应(Ying)立(Li)即(Ji)采(Cai)取(Qu)保(Bao)温(Wen)措(Cuo)施(Shi),(?)如(Ru)覆(Fu)盖(Gai)保(Bao)温(Wen)材(Cai)料(Liao)、(?)搭(Da)设(She)保(Bao)温(Wen)棚(Peng)等(Deng),(?)以(Yi)减(Jian)少(Shao)混(Hun)凝(Ning)土(Tu)的(De)热(Re)量(Liang)损(Sun)失(Shi)。(?)保(Bao)温(Wen)材(Cai)料(Liao)可(Ke)选(Xuan)用(Yong)草(Cao)帘(Lian)、(?)塑(Su)料(Liao)薄(Bao)膜(Mo)、(?)岩(Yan)棉(Mian)被(Bei)等(Deng),(?)保(Bao)温(Wen)层(Ceng)的(De)厚(Hou)度(Du)应(Ying)根(Gen)据(Ju)气(Qi)温(Wen)、(?)混(Hun)凝(Ning)土(Tu)强(Qiang)度(Du)等(Deng)级(Ji)等(Deng)因(Yin)素(Su)确(Que)定(Ding)。(?)冬(Dong)季(Ji)施(Shi)工(Gong)中(Zhong),(?)混(Hun)凝(Ning)土(Tu)的(De)养(Yang)护(Hu)温(Wen)度(Du)应(Ying)控(Kong)制(Zhi)在(Zai)5℃(?)以(Yi)上(Shang)。(?)可(Ke)以(Yi)采(Cai)用(Yong)加(Jia)热(Re)养(Yang)护(Hu)、(?)蓄(Xu)热(Re)养(Yang)护(Hu)等(Deng)方(Fang)法(Fa),(?)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)在(Zai)养(Yang)护(Hu)期(Qi)间(Jian)的(De)温(Wen)度(Du)满(Man)足(Zu)要(Yao)求(Qiu)。(?)加(Jia)热(Re)养(Yang)护(Hu)时(Shi),(?)应(Ying)注(Zhu)意(Yi)控(Kong)制(Zhi)加(Jia)热(Re)温(Wen)度(Du)和(He)加(Jia)热(Re)时(Shi)间(Jian),(?)避(Bi)免(Mian)混(Hun)凝(Ning)土(Tu)因(Yin)温(Wen)度(Du)过(Guo)高(Gao)而(?)产(Chan)生(Sheng)裂(Lie)缝(Feng)。(?)冬(Dong)季(Ji)施(Shi)工(Gong)中(Zhong),(?)混(Hun)凝(Ning)土(Tu)的(De)养(Yang)护(Hu)还(Huan)应(Ying)注(Zhu)意(Yi)湿(Shi)度(Du)控(Kong)制(Zhi)。(?)可(Ke)以(Yi)在(Zai)保(Bao)温(Wen)层(Ceng)内(Nei)设(She)置(Zhi)喷(Pen)水(Shui)装(Zhuang)置(Zhi),(?)定(Ding)期(Qi)喷(Pen)水(Shui)保(Bao)湿(Shi),(?)以(Yi)防(Fang)止(Zhi)混(Hun)凝(Ning)土(Tu)因(Yin)失(Shi)水(Shui)而(?)影(Ying)响(Xiang)强(Qiang)度(Du)发(Fa)展(Zhan)。(?)
三(San)、(?)温(Wen)度(Du)监(Jian)测(Ce)与(Yu)强(Qiang)度(Du)检(Jian)测(Ce)
温(Wen)度(Du)监(Jian)测(Ce):(?)在(Zai)冬(Dong)季(Ji)混(Hun)凝(Ning)土(Tu)施(Shi)工(Gong)过(Guo)程(Cheng)中(Zhong),(?)应(Ying)定(Ding)期(Qi)对(Dui)混(Hun)凝(Ning)土(Tu)的(De)温(Wen)度(Du)进(Jin)行(Xing)监(Jian)测(Ce),(?)包(Bao)括(Kuo)原(Yuan)材(Cai)料(Liao)温(Wen)度(Du)、(?)混(Hun)凝(Ning)土(Tu)出(Chu)机(Ji)温(Wen)度(Du)、(?)入(Ru)模(Mo)温(Wen)度(Du)、(?)养(Yang)护(Hu)温(Wen)度(Du)等(Deng)。(?)根(Gen)据(Ju)温(Wen)度(Du)监(Jian)测(Ce)结(Jie)果(Guo),(?)及(Ji)时(Shi)调(Diao)整(Zheng)施(Shi)工(Gong)措(Cuo)施(Shi),(?)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)的(De)温(Wen)度(Du)满(Man)足(Zu)要(Yao)求(Qiu)。(?)
强(Qiang)度(Du)检(Jian)测(Ce):(?)按(An)照(Zhao)规(Gui)定(Ding)的(De)时(Shi)间(Jian)和(He)方(Fang)法(Fa)对(Dui)混(Hun)凝(Ning)土(Tu)进(Jin)行(Xing)强(Qiang)度(Du)检(Jian)测(Ce),(?)如(Ru)回(Hui)弹(Dan)法(Fa)、(?)钻(Zuan)芯(Xin)法(Fa)等(Deng)。(?)当(Dang)发(Fa)现(Xian)混(Hun)凝(Ning)土(Tu)强(Qiang)度(Du)达(Da)不(Bu)到(Dao)设(She)计(Ji)要(Yao)求(Qiu)时(Shi),(?)应(Ying)及(Ji)时(Shi)分(Fen)析(Xi)原(Yuan)因(Yin),(?)并(Bing)采(Cai)取(Qu)相(Xiang)应(Ying)的(De)补(Bu)救(Jiu)措(Cuo)施(Shi)。(?)
综(Zong)上(Shang)所(Suo)述(Shu),(?)混(Hun)凝(Ning)土(Tu)路(Lu)沿(Yan)石(Shi)在(Zai)冬(Dong)季(Ji)施(Shi)工(Gong)需(Xu)要(Yao)从(Cong)施(Shi)工(Gong)前(Qian)准(Zhun)备(Bei)、(?)施(Shi)工(Gong)过(Guo)程(Cheng)中(Zhong)的(De)各(Ge)个(Ge)环(Huan)节(Jie)以(Yi)及(Ji)温(Wen)度(Du)监(Jian)测(Ce)与(Yu)强(Qiang)度(Du)检(Jian)测(Ce)等(Deng)方(Fang)面(Mian)进(Jin)行(Xing)严(Yan)格(Ge)控(Kong)制(Zhi),(?)以(Yi)确(Que)保(Bao)施(Shi)工(Gong)质(Zhi)量(Liang)和(He)路(Lu)沿(Yan)石(Shi)的(De)耐(Nai)久(Jiu)性(Xing)。(?)