碱激发矿渣陶砂砂浆砌筑的砌体弯曲受拉性能试验
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摘要
为研究碱激发矿渣陶粒混凝土空心砌块(alkali-activated slag ceramsite concrete hollow block,简称AASCHB)砌体的弯曲受拉性能,完成了108个用Mb25～Mb90碱激发矿渣陶砂砂浆(alkali-activated slag mortar with pottery sand,简称AASM)砌筑的AASCHB砌体的弯曲受拉性能试验.试验结果表明:GB 50003—2011表B.0.1-2中所给公式不能准确预估AASM砌筑的AASCHB砌体的弯曲抗拉强度,砂浆强度低于70.3 MPa时,沿通缝截面弯曲抗拉强度预估值偏高,砂浆强度介于70.3～91.9 MPa时,沿通缝截面弯曲抗拉强度预估值偏低;当砂浆强度低于46.2 MPa时,沿齿缝截面弯曲抗拉强度预估值偏高,砂浆强度介于46.2～91.9 MPa时,沿齿缝截面弯曲抗拉强度预估值偏低.同时发现AASCHB砌体弯曲抗拉强度不但与AASM的抗压强度有关,而且受水灰比、砂灰比、Na_2O含量和水玻璃模数的影响.基于试验结果,分别建立了AASCHB砌体沿通缝截面和沿齿缝截面弯曲抗拉强度的计算公式.
To study the bending tensile performance of alkali-activated slag ceramsite concrete hollow block(AASCHB) masonry, tests on 108 masonry specimens with Mb25～Mb90 of alkali-activated slag mortar with pottery sand(AASM) were carried out. The experimental results show that the formula calculation based on Table B.0.1-2 of GB 50003—2011 cannot exactly estimate the bending tensile strength of AASCHB masonry with AASM. When the compressive strength of mortar was lower than 70.3 MPa, the formula calculation of the bending tensile strength along straight joint was higher than the test result.When the compressive strength of mortar was between 70.3 MPa and 91.9 MPa, the formula calculation of the bending tensile strength along straight joint was lower than the test result. The formula calculation of the bending tensile strength along slot joint was higher than the test result as the compressive strength of mortar was lower than 46.2 MPa.When the compressive strength was in the range of 46.2 MPa to 91.9 MPa, the formula calculation of the bending tensile strength along slot joint was lower than the test result. It was found that the bending tensile strength of AASCHB masonry was not only related to the compressive strength of AASM, but also affected by the factors of water to cementitious material ratio, sand to cementitious material ratio, Na_2O content, and silicate modulus.Based on the experimental results, the formulae for the bending tensile strengths of AASCHB masonry along straight joint and slot joint were developed, respectively.
To study the bending tensile performance of alkali-activated slag ceramsite concrete hollow block(AASCHB) masonry, tests on 108 masonry specimens with Mb25～Mb90 of alkali-activated slag mortar with pottery sand(AASM) were carried out. The experimental results show that the formula calculation based on Table B.0.1-2 of GB 50003—2011 cannot exactly estimate the bending tensile strength of AASCHB masonry with AASM. When the compressive strength of mortar was lower than 70.3 MPa, the formula calculation of the bending tensile strength along straight joint was higher than the test result.When the compressive strength of mortar was between 70.3 MPa and 91.9 MPa, the formula calculation of the bending tensile strength along straight joint was lower than the test result. The formula calculation of the bending tensile strength along slot joint was higher than the test result as the compressive strength of mortar was lower than 46.2 MPa.When the compressive strength was in the range of 46.2 MPa to 91.9 MPa, the formula calculation of the bending tensile strength along slot joint was lower than the test result. It was found that the bending tensile strength of AASCHB masonry was not only related to the compressive strength of AASM, but also affected by the factors of water to cementitious material ratio, sand to cementitious material ratio, Na_2O content, and silicate modulus.Based on the experimental results, the formulae for the bending tensile strengths of AASCHB masonry along straight joint and slot joint were developed, respectively.
引文
[1] 郑文忠,朱晶.碱矿渣胶凝材料结构工程应用基础[M].哈尔滨:哈尔滨工业大学出版社,2015:1ZHENG Wenzhong,ZHU Jing.Application foundation of alkali-activated slag cementitious material in structural engineering[M].Harbin:Harbin Institute of Technology Press,2015:1
[2] 郑文忠,陈伟宏,王英.碱矿渣胶凝材料的耐高温性能[J].华中科技大学学报(自然科学版),2009(10):96ZHENG Wenzhong,CHEN Weihong,WANG Ying.High-temperature resistance performance of alkali-activated slag cementitious materials[J].Journal of Huazhong University of Science and Technology (Natural Science Edition),2009(10):96
[3] KOVTUN M,KEARSLEY E P,SHEKHOVTSOVA J.Chemical acceleration of a neutral granulated blast-furnace slag activated by sodium carbonate[J].Cement and Concrete Research,2015,72:1
[4] DODIOMOV I.碱矿渣胶凝材料的工作性研究[D].哈尔滨:哈尔滨工业大学,2015DODIOMOV I.The workability of alkali-activated slag cementitious material[D].Harbin:Harbin Institute of Technology,2015
[5] 祝贺.碱矿渣基地质聚合物的制备及其高温性能研究[D].南宁:广西大学,2016ZHU He.The preparation and high temperature performance research of alkali slag base geopolymer materials[D].Nanning:Guangxi University,2016
[6] 郑文忠,黄文宣,焦贞贞,等.碱矿渣陶粒混凝土基本性能试验研究[J].北京工业大学学报,2017,43(8):1182ZHENG Wenzhong,HUANG Wenxuan,JIAO Zhenzhen,et al.Experiment research on basic performance of alkali-activated slag ceramsite concrete[J].Journal of Beijing University of Technology,2017,43(8):1182
[7] 顾亚敏,方永浩.碱矿渣水泥的收缩与开裂特性及其减缩与增韧[J].硅酸盐学报,2012(1):76GU Yamin,FANG Yonghao.Shrinkage,cracking,shrinkage-reducing and toughening of alkali-activated slag cement-a short review[J].Journal of the Chinese Ceramic Society,2012 (1):76
[8] 杜云丹.页岩多孔砖砌体基本力学性能试验研究[D].柳州:广西工学院,2012DU Yundan.Experimental study on basic mechanical properties of shale perforated brick masonry[D].Liuzhou:Guangxi University of Technology,2012
[9] 杨伟军,祝晓庆,禹慧.混凝土多孔砖砌体弯曲抗拉强度试验研究[J].建筑结构,2006(11):71YANG Weijun,ZHU Xiaoqing,YU Hui.Experimental research on flexural tensile strength of perforated concrete brick masonry[J].Building Structure,2006 (11):71
[10]黄榜彪,杜云丹,胡尚,等.混凝土多排孔砖砌体弯曲抗拉强度试验研究[J].广西大学学报(自然科学版),2011(4):694HUANG Bangbiao,DU Yundan,HU Shang,et al.Experimental study on bending tensile strength of the masonry made of porous concrete bricks[J].Journal of Guangxi University (Natural Science Edition),2011 (4):694
[11]张中脊,杨伟军.蒸压灰砂砖砌体弯曲抗拉强度试验研究[J].新型建筑材料,2009(5):43ZHANG Zhongji,YANG Weijun.Study on autoclaved sand-lime brick masonry by bending tensile strength test[J].New Building Material,2009(5):43
[12]砌体结构设计规范:GB 50003—2011[S].北京:中国建筑工业出版社,2011Code for design of masonry structures:GB 50003—2011[S].Beijing:China Architecture & Building Press,2011
[13]于霖.碱激发矿渣胶凝材料的制备及其性能研究[D].郑州:郑州大学,2010YU Lin.A study on the preparation and properties of alkali-activated slag cementitious material[D].Zhengzhou:Zhengzhou University,2010
[14]建筑砂浆基本性能试验方法标准:JGJ/T 70—2009[S].北京:中国建筑工业出版社,2009Standard for test method of performance on building mortar:JGJ/T 70—2009[S].Beijing:China Architecture & Building Press,2009
[15]混凝土砌块和砖试验方法:GB/T 4111—2013[S].北京:中国标准出版社,2013Test methods for the concrete block and brick:GB/T 4111—2013[S].Beijing:Standards Press of China,2013
[16]普通混凝土小型砌块:GB/T 8239—2014[S].北京:中国标准出版社,2014Normal concrete small block:GB/T 8239—2014[S].Beijing:Standards Press of China,2014
[17]砌体基本力学性能试验方法标准:GB/T 50129—2011[S].北京:中国建筑工业出版社,2011Standard for test method of basic mechanics properties of masonry:GB/T 50129—2011[S].Beijing:China Architecture & Building Press,2011
[18]JIAO Z,WANG Y,ZHENG W,et al.Pottery sand as fine aggregate for preparing alkali-activated slag mortar[J].Advances in Materials Science and Engineering,2018
[19]RASHAD A M,ZEEDAN S R,HASSAN A A.Influence of the activator concentration of sodium silicate on the thermal properties of alkali-activated slag pastes[J].Construction and Building Materials,2016,102
[20]孙小巍,吴陶俊.碱激发矿渣胶凝材料的试验研究[J].硅酸盐通报,2014(11):3036SUN Xiaowei,WU Taojun.Experimental research of alkali-activated slag cementitious material[J].Bulletin of the Chinese Ceramic Society,2014(11):3036
[21]王熊鑫.碱矿渣再生骨料混凝土试验研究[D].昆明:昆明理工大学,2017WANG Xiongxin.Experimental research on alkali-activated slag concrete with recycled aggregate[D].Kunming:Kunming University of Science and Technology,2017
[22]付兴华,陶文宏,孙凤金.水玻璃对地聚物胶凝材料性能影响的研究[J].水泥工程,2008(2):6FU Xinghua,TAO Wenhong,SUN Fengjin.Study on the effect of water glass on the performance of geopolymer cementitious material[J].Cement Engineering,2008 (2):6
[2] 郑文忠,陈伟宏,王英.碱矿渣胶凝材料的耐高温性能[J].华中科技大学学报(自然科学版),2009(10):96ZHENG Wenzhong,CHEN Weihong,WANG Ying.High-temperature resistance performance of alkali-activated slag cementitious materials[J].Journal of Huazhong University of Science and Technology (Natural Science Edition),2009(10):96
[3] KOVTUN M,KEARSLEY E P,SHEKHOVTSOVA J.Chemical acceleration of a neutral granulated blast-furnace slag activated by sodium carbonate[J].Cement and Concrete Research,2015,72:1
[4] DODIOMOV I.碱矿渣胶凝材料的工作性研究[D].哈尔滨:哈尔滨工业大学,2015DODIOMOV I.The workability of alkali-activated slag cementitious material[D].Harbin:Harbin Institute of Technology,2015
[5] 祝贺.碱矿渣基地质聚合物的制备及其高温性能研究[D].南宁:广西大学,2016ZHU He.The preparation and high temperature performance research of alkali slag base geopolymer materials[D].Nanning:Guangxi University,2016
[6] 郑文忠,黄文宣,焦贞贞,等.碱矿渣陶粒混凝土基本性能试验研究[J].北京工业大学学报,2017,43(8):1182ZHENG Wenzhong,HUANG Wenxuan,JIAO Zhenzhen,et al.Experiment research on basic performance of alkali-activated slag ceramsite concrete[J].Journal of Beijing University of Technology,2017,43(8):1182
[7] 顾亚敏,方永浩.碱矿渣水泥的收缩与开裂特性及其减缩与增韧[J].硅酸盐学报,2012(1):76GU Yamin,FANG Yonghao.Shrinkage,cracking,shrinkage-reducing and toughening of alkali-activated slag cement-a short review[J].Journal of the Chinese Ceramic Society,2012 (1):76
[8] 杜云丹.页岩多孔砖砌体基本力学性能试验研究[D].柳州:广西工学院,2012DU Yundan.Experimental study on basic mechanical properties of shale perforated brick masonry[D].Liuzhou:Guangxi University of Technology,2012
[9] 杨伟军,祝晓庆,禹慧.混凝土多孔砖砌体弯曲抗拉强度试验研究[J].建筑结构,2006(11):71YANG Weijun,ZHU Xiaoqing,YU Hui.Experimental research on flexural tensile strength of perforated concrete brick masonry[J].Building Structure,2006 (11):71
[10]黄榜彪,杜云丹,胡尚,等.混凝土多排孔砖砌体弯曲抗拉强度试验研究[J].广西大学学报(自然科学版),2011(4):694HUANG Bangbiao,DU Yundan,HU Shang,et al.Experimental study on bending tensile strength of the masonry made of porous concrete bricks[J].Journal of Guangxi University (Natural Science Edition),2011 (4):694
[11]张中脊,杨伟军.蒸压灰砂砖砌体弯曲抗拉强度试验研究[J].新型建筑材料,2009(5):43ZHANG Zhongji,YANG Weijun.Study on autoclaved sand-lime brick masonry by bending tensile strength test[J].New Building Material,2009(5):43
[12]砌体结构设计规范:GB 50003—2011[S].北京:中国建筑工业出版社,2011Code for design of masonry structures:GB 50003—2011[S].Beijing:China Architecture & Building Press,2011
[13]于霖.碱激发矿渣胶凝材料的制备及其性能研究[D].郑州:郑州大学,2010YU Lin.A study on the preparation and properties of alkali-activated slag cementitious material[D].Zhengzhou:Zhengzhou University,2010
[14]建筑砂浆基本性能试验方法标准:JGJ/T 70—2009[S].北京:中国建筑工业出版社,2009Standard for test method of performance on building mortar:JGJ/T 70—2009[S].Beijing:China Architecture & Building Press,2009
[15]混凝土砌块和砖试验方法:GB/T 4111—2013[S].北京:中国标准出版社,2013Test methods for the concrete block and brick:GB/T 4111—2013[S].Beijing:Standards Press of China,2013
[16]普通混凝土小型砌块:GB/T 8239—2014[S].北京:中国标准出版社,2014Normal concrete small block:GB/T 8239—2014[S].Beijing:Standards Press of China,2014
[17]砌体基本力学性能试验方法标准:GB/T 50129—2011[S].北京:中国建筑工业出版社,2011Standard for test method of basic mechanics properties of masonry:GB/T 50129—2011[S].Beijing:China Architecture & Building Press,2011
[18]JIAO Z,WANG Y,ZHENG W,et al.Pottery sand as fine aggregate for preparing alkali-activated slag mortar[J].Advances in Materials Science and Engineering,2018
[19]RASHAD A M,ZEEDAN S R,HASSAN A A.Influence of the activator concentration of sodium silicate on the thermal properties of alkali-activated slag pastes[J].Construction and Building Materials,2016,102
[20]孙小巍,吴陶俊.碱激发矿渣胶凝材料的试验研究[J].硅酸盐通报,2014(11):3036SUN Xiaowei,WU Taojun.Experimental research of alkali-activated slag cementitious material[J].Bulletin of the Chinese Ceramic Society,2014(11):3036
[21]王熊鑫.碱矿渣再生骨料混凝土试验研究[D].昆明:昆明理工大学,2017WANG Xiongxin.Experimental research on alkali-activated slag concrete with recycled aggregate[D].Kunming:Kunming University of Science and Technology,2017
[22]付兴华,陶文宏,孙凤金.水玻璃对地聚物胶凝材料性能影响的研究[J].水泥工程,2008(2):6FU Xinghua,TAO Wenhong,SUN Fengjin.Study on the effect of water glass on the performance of geopolymer cementitious material[J].Cement Engineering,2008 (2):6