再生砖骨料砌块砌体的基本力学性能试验研究
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摘要
通过对再生砖骨料砌块砌体的基本力学性能试验,分析再生砖骨料砌块砌体的破坏过程和特征、极限荷载及变形能力。研究结果表明,再生砖骨料砌块砌体的抗压和抗剪等基本力学性能与普通混凝土小型空心砌块砌体的基本相似。强度平均值与《砌体结构设计规范》(GB50003—2011)的公式计算值相比较,再生砖骨料砌块砌体的抗压和抗剪强度分别降低6%～12%和22%～46%。再生砖骨料砌块砌体采用再生砖骨料砂浆砌筑对砌体抗压强度和弹性模量影响不大,对砌体抗剪强度有显著提高。提出再生砖骨料砌块砌体抗压强度平均值建议公式,试验结果与建议的理论公式的计算值较为接近,对再生砖骨料砂浆和再生砖骨料砌块砌体的推广应用有一定的意义。
By the experimental study on the basic mechanical properties of recycled brick aggregate masonry,the failure processes,failure characteristics,ultimate capacity and deformation capacity of recycled brick aggregate masonry were analyzed.Results indicates that the compressive and shear behaviors of recycled brick aggregate masonry are similar to that of ordinary hollow block masonry.Compared with the mean value formula of Code for design of masonry structures(GB50003—2011),the compressive and shear strength of recycled brick aggregate masonry are reduced by 6%～12% and 22%～46%,respectively.Recycled brick aggregate mortar has little effect on the compressive strength and elastic modulus of masonry,but can significantly improve the shear strength of masonry.The compressive strength formula of recycled brick aggregate masonry was proposed.Test results match well with the corresponding calculated values of theoretical formula.It is of great significance for the application of recycled brick aggregate mortar and recycled brick aggregate masonry.
By the experimental study on the basic mechanical properties of recycled brick aggregate masonry,the failure processes,failure characteristics,ultimate capacity and deformation capacity of recycled brick aggregate masonry were analyzed.Results indicates that the compressive and shear behaviors of recycled brick aggregate masonry are similar to that of ordinary hollow block masonry.Compared with the mean value formula of Code for design of masonry structures(GB50003—2011),the compressive and shear strength of recycled brick aggregate masonry are reduced by 6%～12% and 22%～46%,respectively.Recycled brick aggregate mortar has little effect on the compressive strength and elastic modulus of masonry,but can significantly improve the shear strength of masonry.The compressive strength formula of recycled brick aggregate masonry was proposed.Test results match well with the corresponding calculated values of theoretical formula.It is of great significance for the application of recycled brick aggregate mortar and recycled brick aggregate masonry.
引文
[1]施楚贤.砌体结构理论与设计[M].北京:中国建筑工业出版社,2014.SHI Chuxian.The theory and design of masonry structure[M].Beijing:China Architecture and Building Press,2014.
[2]ZONG L,FEI Z,ZHANG S.Permeability of recycled aggregate concrete containing fly ash and clay brick waste[J].Wall Materials Innovation&Energy Saving in Buildings,2014,70(5):175-182.
[3]Diagne M,Tinjum J M,Nokkaew K.The effects of recycled clay brick content on the engineering properties,weathering durability,and resilient modulus of recycled concrete aggregate[J].Transportation Geotechnics,2015,3:15-23.
[4]Poon C S,Kou S C,Lam L.Use of recycled aggregates in molded concrete bricks and blocks[J].Construction&Building Materials,2002,16(5):281-289.
[5]Bektas F,Wang K,Ceylan H.Effects of crushed clay brick aggregate on mortar durability[J].Construction&Building Materials,2009,23(5):1909-1914.
[6]陈忠范,刘文坤.再生混凝土砌块砌体基本力学性能研究[J].地震工程与工程振动,2014,1(3):133-141.CHEN Zhongfan,LIU Wenkun.Study on basic mechanical properties of recycled concrete block masonry[J].Earthquake Engineering and Engineering Dynamics,2014,1(3):133-141.
[7]朱丽华,戴军,白国良,等.再生混凝土砌块砌体力学性能试验[J].建筑科学与工程学报,2014,31(3):52-57.ZHU Lihua,DAI Jun,BAI Guoliang,et al.Experiment on mechanical properties of recycled concrete hollow block masonry[J].Journal of Architecture and Civil Engineering,2014,31(3):52-57.
[8]GB 50574-2010,墙体材料应用统一技术规范[S].GB 50574-2010,Uniform technique code for wall materials used in buildings[S].
[9]GB/T 4111-2013,混凝土砌块和砖试验方法[S].GB/T 4111-2013,Test methods for the concrete block and brick[S].
[10]JGJ/T70-2009,建筑砂浆基本性能试验方法标准[S].JGJ/T70-2009,Standard for test method of performance on building mortar[S].
[11]GB/T 50129-2011,砌体基本力学性能试验方法标准[S].GB/T 50129-2011,Standard for test method of basic mechanics properties of masonry[S].
[12]GB 50003-2011,砌体结构设计规范[S].GB 50003-2011,Code for design of masonry structures[S].
[13]蔡勇,吕晓勇,李得建,等.桥用砌体轴心受压应力-应变全曲线试验研究[J].铁道科学与工程学报,2016,13(8):1600-1606.CAI Yong,LüXiaoyong,LI Dejian,et al.Experimental study on axial compression stress-strain full curves of the masonry for bridge[J].Journal of Railway Science and Engineering,2016,13(8):1600-1606.
[2]ZONG L,FEI Z,ZHANG S.Permeability of recycled aggregate concrete containing fly ash and clay brick waste[J].Wall Materials Innovation&Energy Saving in Buildings,2014,70(5):175-182.
[3]Diagne M,Tinjum J M,Nokkaew K.The effects of recycled clay brick content on the engineering properties,weathering durability,and resilient modulus of recycled concrete aggregate[J].Transportation Geotechnics,2015,3:15-23.
[4]Poon C S,Kou S C,Lam L.Use of recycled aggregates in molded concrete bricks and blocks[J].Construction&Building Materials,2002,16(5):281-289.
[5]Bektas F,Wang K,Ceylan H.Effects of crushed clay brick aggregate on mortar durability[J].Construction&Building Materials,2009,23(5):1909-1914.
[6]陈忠范,刘文坤.再生混凝土砌块砌体基本力学性能研究[J].地震工程与工程振动,2014,1(3):133-141.CHEN Zhongfan,LIU Wenkun.Study on basic mechanical properties of recycled concrete block masonry[J].Earthquake Engineering and Engineering Dynamics,2014,1(3):133-141.
[7]朱丽华,戴军,白国良,等.再生混凝土砌块砌体力学性能试验[J].建筑科学与工程学报,2014,31(3):52-57.ZHU Lihua,DAI Jun,BAI Guoliang,et al.Experiment on mechanical properties of recycled concrete hollow block masonry[J].Journal of Architecture and Civil Engineering,2014,31(3):52-57.
[8]GB 50574-2010,墙体材料应用统一技术规范[S].GB 50574-2010,Uniform technique code for wall materials used in buildings[S].
[9]GB/T 4111-2013,混凝土砌块和砖试验方法[S].GB/T 4111-2013,Test methods for the concrete block and brick[S].
[10]JGJ/T70-2009,建筑砂浆基本性能试验方法标准[S].JGJ/T70-2009,Standard for test method of performance on building mortar[S].
[11]GB/T 50129-2011,砌体基本力学性能试验方法标准[S].GB/T 50129-2011,Standard for test method of basic mechanics properties of masonry[S].
[12]GB 50003-2011,砌体结构设计规范[S].GB 50003-2011,Code for design of masonry structures[S].
[13]蔡勇,吕晓勇,李得建,等.桥用砌体轴心受压应力-应变全曲线试验研究[J].铁道科学与工程学报,2016,13(8):1600-1606.CAI Yong,LüXiaoyong,LI Dejian,et al.Experimental study on axial compression stress-strain full curves of the masonry for bridge[J].Journal of Railway Science and Engineering,2016,13(8):1600-1606.