1、(?)什(Shi)么(Me)是(Shi)建(Jian)筑(Zhu)砂(Sha)浆(Jiang)?(?)有(You)哪(Na)些(Xie)种(Zhong)类(Lei)?(?)
答(Da):(?)建(Jian)筑(Zhu)砂(Sha)浆(Jiang)是(Shi)指(Zhi)由(You)无(Wu)机(Ji)胶(Jiao)凝(Ning)材(Cai)料(Liao)、(?)细(Xi)集(Ji)料(Liao)、(?)掺(Chan)合(He)料(Liao)、(?)水(Shui),(?)以(Yi)及(Ji)根(Gen)据(Ju)性(Xing)能(Neng)确(Que)定(Ding)的(De)其(Qi)他(Ta)组(Zu)分(Fen)按(An)适(Shi)当(Dang)的(De)比(Bi)例(Li)配(Pei)合(He)、(?)拌(Ban)制(Zhi)并(Bing)经(Jing)硬(Ying)化(Hua)而(?)成(Cheng)的(De)建(Jian)筑(Zhu)过(Guo)程(Cheng)材(Cai)料(Liao),(?)在(Zai)建(Jian)筑(Zhu)工(Gong)程(Cheng)中(Zhong)主(Zhu)要(Yao)起(Qi)粘(Zhan)结(Jie)、(?)衬(Chen)垫(Dian)及(Ji)传(Chuan)递(Di)应(Ying)力(Li)等(Deng)作(Zuo)用(Yong)。(?)根(Gen)据(Ju)砂(Sha)浆(Jiang)的(De)生(Sheng)产(Chan)特(Te)点(Dian)分(Fen)为(Wei)施(Shi)工(Gong)现(Xian)场(Chang)拌(Ban)制(Zhi)的(De)砂(Sha)浆(Jiang)和(He)由(You)专(Zhuan)业(Ye)生(Sheng)产(Chan)厂(Chang)生(Sheng)产(Chan)的(De)预(Yu)拌(Ban)砂(Sha)浆(Jiang)。(?)
根(Gen)据(Ju)砂(Sha)浆(Jiang)在(Zai)建(Jian)筑(Zhu)工(Gong)程(Cheng)中(Zhong)的(De)用(Yong)途(Tu)可(Ke)分(Fen)为(Wei):(?)砌(Qi)筑(Zhu)类(Lei)、(?)抹(Mo)灰(Hui)类(Lei)、(?)地(Di)面(Mian)类(Lei)、(?)粘(Zhan)结(Jie)类(Lei)、(?)装(Zhuang)饰(Shi)类(Lei)、(?)保(Bao)温(Wen)类(Lei)等(Deng)砂(Sha)浆(Jiang)。(?)前(Qian)三(San)类(Lei)砂(Sha)浆(Jiang)是(Shi)目(Mu)前(Qian)国(Guo)内(Nei)使(Shi)用(Yong)大(Da)、(?)用(Yong)途(Tu)广(Guang)的(De)砂(Sha)浆(Jiang)品(Pin)种(Zhong),(?)其(Qi)中(Zhong)砌(Qi)筑(Zhu)类(Lei)砂(Sha)浆(Jiang)是(Shi)将(Jiang)砖(Zhuan)((?)块(Kuai)材(Cai))(?)粘(Zhan)结(Jie)成(Cheng)一(Yi)个(Ge)整(Zheng)体(Ti),(?)即(Ji)墙(Qiang)体(Ti);(?)抹(Mo)灰(Hui)类(Lei)砂(Sha)浆(Jiang)是(Shi)涂(Tu)抹(Mo)在(Zai)墙(Qiang)体(Ti)表(Biao)面(Mian),(?)一(Yi)方(Fang)面(Mian)起(Qi)着(Zhuo)找(Zhao)平(Ping)墙(Qiang)体(Ti)的(De)作(Zuo)用(Yong),(?)另(Ling)一(Yi)方(Fang)面(Mian)起(Qi)着(Zhuo)保(Bao)护(Hu)墙(Qiang)体(Ti)的(De)作(Zuo)用(Yong),(?)它(Ta)既(Ji)保(Bao)证(Zheng)了(Liao)建(Jian)筑(Zhu)的(De)使(Shi)用(Yong)条(Tiao)件(Jian),(?)又(You)装(Zhuang)饰(Shi)了(Liao)墙(Qiang)体(Ti);(?)地(Di)面(Mian)类(Lei)砂(Sha)浆(Jiang)不(Bu)仅(Jin)保(Bao)护(Hu)立(Li)了(Liao)楼(Lou)板(Ban)及(Ji)地(Di)坪(Ping),(?)而(?)且(Qie)使(Shi)地(Di)面(Mian)表(Biao)面(Mian)平(Ping)整(Zheng),(?)有(You)利(Li)于(Yu)装(Zhuang)饰(Shi)装(Zhuang)修(Xiu),(?)同(Tong)时(Shi)还(Huan)具(Ju)有(You)防(Fang)潮(Chao)、(?)耐(Nai)磨(Mo)等(Deng)性(Xing)能(Neng)。(?)合(He)理(Li)使(Shi)用(Yong)砂(Sha)浆(Jiang)对(Dui)节(Jie)约(Yue)胶(Jiao)凝(Ning)材(Cai)料(Liao)、(?)方(Fang)便(Bian)施(Shi)工(Gong)、(?)提(Ti)高(Gao)工(Gong)程(Cheng)质(Zhi)量(Liang)起(Qi)着(Zhuo)重(Zhong)要(Yao)的(De)作(Zuo)用(Yong)。(?)
答(Da):(?)砌(Qi)筑(Zhu)砂(Sha)浆(Jiang)增(Zeng)塑(Su)剂(Ji)是(Shi)指(Zhi)砌(Qi)筑(Zhu)砂(Sha)浆(Jiang)拌(Ban)制(Zhi)过(Guo)程(Cheng)中(Zhong)掺(Chan)入(Ru)的(De)用(Yong)以(Yi)改(Gai)善(Shan)砂(Sha)浆(Jiang)和(He)易(Yi)性(Xing)的(De)非(Fei)石(Shi)灰(Hui)类(Lei)外(Wai)加(Jia)剂(Ji)。(?)它(Ta)可(Ke)以(Yi)是(Shi)引(Yin)气(Qi)型(Xing);(?)其(Qi)组(Zu)成(Cheng)成(Cheng)分(Fen)可(Ke)以(Yi)为(Wei)有(You)机(Ji)、(?)无(Wu)机(Ji)或(Huo)有(You)机(Ji)无(Wu)机(Ji)复(Fu)合(He)型(Xing);(?)其(Qi)掺(Chan)量(Liang)不(Bu)受(Shou)应(Ying)小(Xiao)于(Yu)胶(Jiao)凝(Ning)材(Cai)料(Liao)5%的(De)规(Gui)定(Ding)限(Xian)制(Zhi)。(?)其(Qi)质(Zhi)量(Liang)应(Ying)符(Fu)合(He)《(?)砌(Qi)筑(Zhu)砂(Sha)浆(Jiang)增(Zeng)塑(Su)剂(Ji)》(?)((?)JG/T164—(?)2004)(?)的(De)规(Gui)定(Ding),(?)见(Jian)表(Biao)2—(?)1、(?)表(Biao)2—(?)2 。(?)
砌(Qi)筑(Zhu)砂(Sha)浆(Jiang)增(Zeng)塑(Su)剂(Ji)的(De)检(Jian)验(Yan)分(Fen)为(Wei)两(Liang)部(Bu)分(Fen):(?)一(Yi)是(Shi)掺(Chan)增(Zeng)塑(Su)剂(Ji)的(De)砂(Sha)浆(Jiang)性(Xing)能(Neng)检(Jian)验(Yan);(?)二(?)是(Shi)用(Yong)掺(Chan)增(Zeng)塑(Su)剂(Ji)砂(Sha)浆(Jiang)砌(Qi)筑(Zhu)的(De)砌(Qi)体(Ti)的(De)强(Qiang)度(Du)检(Jian)验(Yan)。(?)因(Yin)砂(Sha)浆(Jiang)中(Zhong)掺(Chan)入(Ru)引(Yin)气(Qi)型(Xing)增(Zeng)塑(Su)剂(Ji)后(Hou),(?)往(Wang)往(Wang)会(Hui)降(Jiang)低(Di)砌(Qi)体(Ti)的(De)力(Li)学(Xue)性(Xing)能(Neng),(?)尤(You)其(Qi)是(Shi)抗(Kang)剪(Jian)和(He)抗(Kang)压(Ya)强(Qiang)度(Du),(?)因(Yin)此(Ci),(?)《(?)砌(Qi)体(Ti)工(Gong)程(Cheng)施(Shi)工(Gong)质(Zhi)量(Liang)验(Yan)收(Shou)规(Gui)范(Fan)》(?)((?)GB 50203—(?)2002)(?)中(Zhong)规(Gui)定(Ding):(?)有(You)机(Ji)塑(Su)化(Hua)剂(Ji)应(Ying)有(You)砌(Qi)体(Ti)强(Qiang)度(Du)的(De)型(Xing)式(Shi)检(Jian)验(Yan)报(Bao)告(Gao)。(?)
对(Dui)于(Yu)引(Yin)气(Qi)型(Xing)增(Zeng)塑(Su)剂(Ji),(?)也(Ye)称(Cheng)为(Wei)砂(Sha)浆(Jiang)塑(Su)化(Hua)剂(Ji),(?)它(Ta)通(Tong)过(Guo)引(Yin)气(Qi)而(?)改(Gai)善(Shan)砂(Sha)浆(Jiang)的(De)可(Ke)操(Cao)作(Zuo)性(Xing)。(?)砂(Sha)浆(Jiang)含(Han)气(Qi)量(Liang)是(Shi)一(Yi)个(Ge)关(Guan)键(Jian)性(Xing)指(Zhi)标(Biao),(?)它(Ta)直(Zhi)接(Jie)影(Ying)响(Xiang)砂(Sha)浆(Jiang)的(De)和(He)易(Yi)性(Xing)、(?)强(Qiang)度(Du)和(He)砌(Qi)体(Ti)强(Qiang)度(Du)。(?)含(Han)气(Qi)量(Liang)越(Yue)大(Da),(?)砂(Sha)浆(Jiang)和(He)易(Yi)性(Xing)越(Yue)好(Hao),(?)但(Dan)砂(Sha)浆(Jiang)强(Qiang)度(Du)降(Jiang)低(Di)越(Yue)多(Duo),(?)同(Tong)时(Shi),(?)砌(Qi)体(Ti)的(De)强(Qiang)度(Du)也(Ye)低(Di),(?)因(Yin)此(Ci),(?)对(Dui)含(Han)气(Qi)量(Liang)的(De)上(Shang)限(Xian)做(Zuo)出(Chu)了(Liao)规(Gui)定(Ding)。(?)只(Zhi)有(You)当(Dang)砂(Sha)浆(Jiang)含(Han)气(Qi)量(Liang)控(Kong)制(Zhi)在(Zai)20%以(Yi)下(Xia)时(Shi),(?)砂(Sha)浆(Jiang)和(He)砌(Qi)体(Ti)的(De)强(Qiang)度(Du)才(Cai)可(Ke)能(Neng)得(De)到(Dao)保(Bao)证(Zheng)。(?)1h静(Jing)置(Zhi)后(Hou)的(De)含(Han)气(Qi)量(Liang)主(Zhu)要(Yao)是(Shi)控(Kong)制(Zhi)气(Qi)泡(Pao)的(De)稳(Wen)定(Ding)性(Xing)。(?)如(Ru)气(Qi)泡(Pao)稳(Wen)定(Ding)性(Xing)不(Bu)好(Hao),(?)虽(Sui)然(Ran)砂(Sha)浆(Jiang)刚(Gang)搅(Jiao)拌(Ban)时(Shi)的(De)和(He)易(Yi)性(Xing)得(De)到(Dao)改(Gai)善(Shan),(?)但(Dan)过(Guo)一(Yi)段(Duan)时(Shi)间(Jian)这(Zhe)种(Zhong)效(Xiao)果(Guo)就(Jiu)会(Hui)减(Jian)弱(Ruo)或(Huo)消(Xiao)失(Shi),(?)起(Qi)不(Bu)到(Dao)塑(Su)化(Hua)的(De)作(Zuo)用(Yong),(?)因(Yin)此(Ci),(?)引(Yin)气(Qi)型(Xing)增(Zeng)塑(Su)剂(Ji)要(Yao)有(You)良(Liang)好(Hao)的(De)气(Qi)泡(Pao)稳(Wen)定(Ding)性(Xing)。(?)砂(Sha)浆(Jiang)含(Han)气(Qi)量(Liang)的(De)测(Ce)定(Ding)方(Fang)法(Fa)采(Cai)用(Yong)容(Rong)重(Zhong)法(Fa)。(?)
非(Fei)引(Yin)气(Qi)类(Lei)增(Zeng)塑(Su)剂(Ji)通(Tong)过(Guo)物(Wu)理(Li)吸(Xi)附(Fu)水(Shui)作(Zuo)用(Yong),(?)可(Ke)使(Shi)砂(Sha)浆(Jiang)达(Da)到(Dao)保(Bao)水(Shui)和(He)增(Zeng)稠(Chou)作(Zuo)用(Yong)。(?)其(Qi)典(Dian)型(Xing)产(Chan)品(Pin)是(Shi)砂(Sha)浆(Jiang)稠(Chou)化(Hua)粉(Fen)。(?)砂(Sha)浆(Jiang)稠(Chou)化(Hua)粉(Fen)的(De)主(Zhu)要(Yao)成(Cheng)分(Fen)是(Shi)蒙(Meng)脱(Tuo)石(Shi)和(He)有(You)机(Ji)聚(Ju)合(He)物(Wu)改(Gai)性(Xing)剂(Ji)以(Yi)及(Ji)其(Qi)他(Ta)矿(Kuang)物(Wu)助(Zhu)剂(Ji)。(?)砂(Sha)浆(Jiang)稠(Chou)化(Hua)粉(Fen)其(Qi)本(Ben)质(Zhi)就(Jiu)是(Shi)有(You)机(Ji)网(Wang)络(Luo)蒙(Meng)脱(Tuo)石(Shi),(?)使(Shi)得(De)砂(Sha)浆(Jiang)具(Ju)有(You)良(Liang)好(Hao)的(De)保(Bao)水(Shui)性(Xing)和(He)触(Chu)变(Bian)性(Xing)。(?)有(You)机(Ji)网(Wang)络(Luo)蒙(Meng)脱(Tuo)石(Shi)能(Neng)稳(Wen)定(Ding)吸(Xi)附(Fu)大(Da)量(Liang)水(Shui)分(Fen)子(Zi),(?)并(Bing)且(Qie)所(Suo)形(Xing)成(Cheng)的(De)有(You)机(Ji)胶(Jiao)体(Ti)具(Ju)有(You)很(Hen)强(Qiang)的(De)触(Chu)变(Bian)性(Xing),(?)使(Shi)得(De)砂(Sha)浆(Jiang)能(Neng)长(Chang)时(Shi)间(Jian)保(Bao)持(Chi)良(Liang)好(Hao)的(De)可(Ke)操(Cao)作(Zuo)性(Xing)。(?)即(Ji),(?)砂(Sha)浆(Jiang)在(Zai)静(Jing)置(Zhi)状(Zhuang)态(Tai)能(Neng)保(Bao)持(Chi)良(Liang)好(Hao)的(De)体(Ti)积(Ji)稳(Wen)定(Ding)性(Xing),(?)使(Shi)各(Ge)组(Zu)分(Fen)保(Bao)持(Chi)不(Bu)变(Bian);(?)在(Zai)受(Shou)力(Li)状(Zhuang)态(Tai)下(Xia)具(Ju)有(You)良(Liang)好(Hao)的(De)流(Liu)动(Dong)性(Xing),(?)使(Shi)砂(Sha)浆(Jiang)易(Yi)操(Cao)作(Zuo),(?)易(Yi)抹(Mo)平(Ping),(?)并(Bing)与(Yu)基(Ji)层(Ceng)粘(Zhan)结(Jie)牢(Lao)固(Gu)。(?)有(You)机(Ji)网(Wang)络(Luo)蒙(Meng)脱(Tuo)石(Shi)能(Neng)有(You)效(Xiao)控(Kong)制(Zhi)蒙(Meng)脱(Tuo)石(Shi)膨(Peng)胀(Zhang),(?)限(Xian)制(Zhi)水(Shui)泥(Ni)浆(Jiang)的(De)干(Gan)缩(Suo),(?)使(Shi)砂(Sha)浆(Jiang)粘(Zhan)结(Jie)强(Qiang)度(Du)高(Gao),(?)收(Shou)缩(Suo)低(Di),(?)抗(Kang)冻(Dong)性(Xing)好(Hao)。(?)用(Yong)非(Fei)纤(Xian)维(Wei)素(Su)醚(Mi)、(?)非(Fei)引(Yin)气(Qi)的(De)有(You)机(Ji)高(Gao)分(Fen)子(Zi)材(Cai)料(Liao)来(Lai)改(Gai)性(Xing)蒙(Meng)脱(Tuo)石(Shi)效(Xiao)果(Guo)最(Zui)好(Hao)。(?)
3、(?)引(Yin)气(Qi)剂(Ji)在(Zai)砂(Sha)浆(Jiang)中(Zhong)有(You)什(Shi)么(Me)作(Zuo)用(Yong)?(?)
答(Da):(?)引(Yin)气(Qi)剂(Ji)可(Ke)在(Zai)砂(Sha)浆(Jiang)搅(Jiao)拌(Ban)过(Guo)程(Cheng)中(Zhong)引(Yin)入(Ru)大(Da)量(Liang)分(Fen)布(Bu)均(Jun)匀(Yun)、(?)稳(Wen)定(Ding)而(?)封(Feng)闭(Bi)的(De)微(Wei)小(Xiao)气(Qi)泡(Pao)。(?)砂(Sha)浆(Jiang)中(Zhong)掺(Chan)入(Ru)引(Yin)气(Qi)剂(Ji)后(Hou),(?)可(Ke)显(Xian)著(Zhu)改(Gai)善(Shan)浆(Jiang)体(Ti)的(De)和(He)易(Yi)性(Xing),(?)提(Ti)高(Gao)硬(Ying)化(Hua)砂(Sha)浆(Jiang)的(De)抗(Kang)渗(Shen)性(Xing)与(Yu)抗(Kang)冻(Dong)性(Xing)。(?)虽(Sui)然(Ran)引(Yin)气(Qi)剂(Ji)掺(Chan)量(Liang)很(Hen)小(Xiao),(?)但(Dan)对(Dui)砂(Sha)浆(Jiang)的(De)性(Xing)能(Neng)影(Ying)响(Xiang)却(Que)很(Hen)大(Da),(?)主(Zhu)要(Yao)作(Zuo)用(Yong)有(You):(?)
((?)1)(?) 改(Gai)善(Shan)砂(Sha)浆(Jiang)的(De)和(He)易(Yi)性(Xing)
掺(Chan)入(Ru)引(Yin)气(Qi)剂(Ji)后(Hou),(?)在(Zai)砂(Sha)浆(Jiang)内(Nei)形(Xing)成(Cheng)大(Da)量(Liang)微(Wei)小(Xiao)的(De)封(Feng)闭(Bi)气(Qi)泡(Pao),(?)这(Zhe)些(Xie)微(Wei)气(Qi)泡(Pao)如(Ru)同(Tong)滚(Gun)珠(Zhu)一(Yi)样(Yang),(?)减(Jian)少(Shao)骨(Gu)料(Liao)颗(Ke)粒(Li)之(Zhi)间(Jian)的(De)摩(Mo)擦(Ca)阻(Zu)力(Li),(?)使(Shi)砂(Sha)浆(Jiang)拌(Ban)合(He)物(Wu)的(De)流(Liu)动(Dong)性(Xing)增(Zeng)加(Jia),(?)特(Te)别(Bie)是(Shi)在(Zai)人(Ren)工(Gong)砂(Sha)或(Huo)天(Tian)然(Ran)砂(Sha)颗(Ke)粒(Li)较(Jiao)粗(Cu)、(?)级(Ji)配(Pei)较(Jiao)差(Cha)以(Yi)及(Ji)贫(Pin)水(Shui)泥(Ni)砂(Sha)浆(Jiang)中(Zhong)使(Shi)用(Yong)效(Xiao)果(Guo)更(Geng)好(Hao)。(?)同(Tong)时(Shi)由(You)于(Yu)水(Shui)分(Fen)均(Jun)匀(Yun)分(Fen)布(Bu)在(Zai)大(Da)量(Liang)气(Qi)泡(Pao)的(De)表(Biao)面(Mian),(?)使(Shi)能(Neng)自(Zi)由(You)移(Yi)动(Dong)的(De)水(Shui)量(Liang)减(Jian)少(Shao),(?)因(Yin)而(?)减(Jian)少(Shao)砂(Sha)浆(Jiang)的(De)泌(Mi)水(Shui)量(Liang)。(?)
((?)2)(?) 提(Ti)高(Gao)砂(Sha)浆(Jiang)的(De)抗(Kang)掺(Chan)、(?)抗(Kang)冻(Dong)及(Ji)
引(Yin)气(Qi)剂(Ji)使(Shi)砂(Sha)浆(Jiang)拌(Ban)合(He)物(Wu)泌(Mi)水(Shui)性(Xing)减(Jian)小(Xiao),(?)泌(Mi)水(Shui)通(Tong)道(Dao)的(De)毛(Mao)细(Xi)管(Guan)也(Ye)相(Xiang)应(Ying)减(Jian)少(Shao)。(?)同(Tong)时(Shi),(?)大(Da)量(Liang)封(Feng)闭(Bi)的(De)微(Wei)气(Qi)小(Xiao)泡(Pao)的(De)存(Cun)在(Zai),(?)堵(Du)塞(Sai)或(Huo)隔(Ge)断(Duan)了(Liao)砂(Sha)浆(Jiang)中(Zhong)毛(Mao)细(Xi)管(Guan)渗(Shen)水(Shui)通(Tong)道(Dao),(?)改(Gai)变(Bian)了(Liao)砂(Sha)浆(Jiang)的(De)孔(Kong)结(Jie)构(Gou),(?)使(Shi)砂(Sha)浆(Jiang)抗(Kang)渗(Shen)性(Xing)得(De)到(Dao)提(Ti)高(Gao)。(?)气(Qi)泡(Pao)有(You)较(Jiao)大(Da)的(De)弹(Dan)性(Xing)变(Bian)形(Xing)能(Neng)力(Li),(?)对(Dui)由(You)水(Shui)结(Jie)冰(Bing)所(Suo)产(Chan)生(Sheng)的(De)膨(Peng)胀(Zhang)应(Ying)力(Li)有(You)一(Yi)定(Ding)的(De)缓(Huan)冲(Chong)作(Zuo)用(Yong),(?)因(Yin)而(?)砂(Sha)浆(Jiang)的(De)抗(Kang)冻(Dong)性(Xing)得(De)到(Dao)提(Ti)高(Gao),(?)耐(Nai)久(Jiu)性(Xing)也(Ye)随(Sui)之(Zhi)提(Ti)高(Gao)。(?)
((?)3)(?) 降(Jiang)低(Di)砂(Sha)浆(Jiang)的(De)强(Qiang)度(Du)
由(You)于(Yu)大(Da)量(Liang)气(Qi)泡(Pao)的(De)存(Cun)在(Zai),(?)减(Jian)少(Shao)了(Liao)砂(Sha)浆(Jiang)的(De)有(You)效(Xiao)受(Shou)力(Li)面(Mian)积(Ji),(?)使(Shi)砂(Sha)浆(Jiang)强(Qiang)度(Du)降(Jiang)低(Di)。(?)一(Yi)般(Ban)含(Han)气(Qi)量(Liang)每(Mei)增(Zeng)加(Jia)1%,(?)强(Qiang)度(Du)下(Xia)降(Jiang)5%。(?)对(Dui)于(Yu)有(You)一(Yi)定(Ding)减(Jian)水(Shui)作(Zuo)用(Yong)的(De)引(Yin)气(Qi)剂(Ji),(?)由(You)于(Yu)降(Jiang)低(Di)了(Liao)灰(Hui)水(Shui)比(Bi),(?)使(Shi)砂(Sha)浆(Jiang)强(Qiang)度(Du)得(De)到(Dao)一(Yi)定(Ding)补(Bu)偿(Chang)。(?)因(Yin)此(Ci),(?)使(Shi)用(Yong)引(Yin)气(Qi)剂(Ji)时(Shi),(?)要(Yao)严(Yan)格(Ge)控(Kong)制(Zhi)其(Qi)掺(Chan)量(Liang),(?)以(Yi)达(Da)到(Dao)最(Zui)佳(Jia)效(Xiao)果(Guo)。(?)
另(Ling)外(Wai),(?)由(You)于(Yu)大(Da)量(Liang)气(Qi)泡(Pao)的(De)存(Cun)在(Zai),(?)使(Shi)砂(Sha)浆(Jiang)的(De)弹(Dan)性(Xing)变(Bian)形(Xing)增(Zeng)大(Da),(?)弹(Dan)性(Xing)模(Mo)量(Liang)有(You)所(Suo)降(Jiang)低(Di)。(?)
((?)4)(?)增(Zeng)加(Jia)砂(Sha)浆(Jiang)体(Ti)积(Ji)
由(You)于(Yu)引(Yin)气(Qi)剂(Ji)引(Yin)入(Ru)大(Da)量(Liang)气(Qi)泡(Pao),(?)使(Shi)砂(Sha)浆(Jiang)体(Ti)积(Ji)增(Zeng)加(Jia),(?)密(Mi)度(Du)降(Jiang)低(Di),(?)故(Gu)能(Neng)节(Jie)省(Sheng)材(Cai)料(Liao),(?)增(Zeng)加(Jia)施(Shi)工(Gong)面(Mian)积(Ji)。(?)
4、(?)水(Shui)泥(Ni)砂(Sha)浆(Jiang)中(Zhong)掺(Chan)入(Ru)纤(Xian)维(Wei)有(You)何(He)作(Zuo)用(Yong)?(?)
答(Da):(?)纤(Xian)维(Wei)在(Zai)砂(Sha)浆(Jiang)中(Zhong)的(De)主(Zhu)要(Yao)作(Zuo)用(Yong)是(Shi)抗(Kang)裂(Lie)、(?)增(Zeng)韧(Ren)、(?)抗(Kang)冲(Chong)击(Ji)、(?)抗(Kang)渗(Shen)、(?)抗(Kang)冻(Dong)融(Rong)及(Ji)抗(Kang)疲(Pi)劳(Lao)等(Deng)。(?)
①(?) 阻(Zu)裂(Lie):(?)阻(Zu)止(Zhi)砂(Sha)浆(Jiang)基(Ji)体(Ti)原(Yuan)有(You)缺(Que)陷(Xian)裂(Lie)缝(Feng)的(De)扩(Kuo)展(Zhan),(?)并(Bing)有(You)效(Xiao)阻(Zu)止(Zhi)和(He)延(Yan)缓(Huan)新(Xin)裂(Lie)缝(Feng)的(De)出(Chu)现(Xian);(?)
②(?) 防(Fang)渗(Shen):(?)提(Ti)高(Gao)砂(Sha)浆(Jiang)基(Ji)体(Ti)的(De)密(Mi)实(Shi)性(Xing),(?)阻(Zu)止(Zhi)外(Wai)界(Jie)水(Shui)分(Fen)侵(Qin)入(Ru),(?)提(Ti)高(Gao)砂(Sha)浆(Jiang)的(De)耐(Nai)水(Shui)性(Xing)和(He)抗(Kang)渗(Shen)性(Xing):(?)
③(?) 耐(Nai)久(Jiu):(?)改(Gai)善(Shan)砂(Sha)浆(Jiang)基(Ji)体(Ti)的(De)抗(Kang)冻(Dong)、(?)抗(Kang)疲(Pi)劳(Lao)性(Xing)能(Neng),(?)提(Ti)高(Gao)耐(Nai)久(Jiu)性(Xing);(?)
④(?) 抗(Kang)冲(Chong)击(Ji):(?)改(Gai)善(Shan)砂(Sha)浆(Jiang)基(Ji)体(Ti)的(De)刚(Gang)性(Xing),(?)增(Zeng)加(Jia)韧(Ren)性(Xing),(?)减(Jian)少(Shao)脆(Cui)性(Xing),(?)提(Ti)高(Gao)砂(Sha)浆(Jiang)变(Bian)形(Xing)能(Neng)力(Li)和(He)抗(Kang)冲(Chong)击(Ji)性(Xing)。(?)