地震废弃混凝土再生粗骨料物理力学性能试验研究
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摘要
再生混凝土粗骨料性能对再生混凝土的物理和力学性能影响很大,很有必要进行科学试验研究。通过对都江堰地震废弃混凝土再生粗骨料的宏观性能试验研究和微观结构形貌分析,得到了再生混凝土粗骨料各宏观特性及相互关系,以及微观结构缺陷对宏观性能的影响。分析得出了砂浆含量高和不可忽略微裂纹多是再生混凝土粗骨料区别普通粗骨料的本质特征,从而为灾区再生混凝土粗骨料的实际应用提供了理论和试验依据。
It is necessary to conduct scientific experiments on performance of recycled coarse aggregate for its great effects on the physical and mechanical properties of recycled coarse aggregate concrete.By experimental research on recycled coarse aggregate made of earthquake waste concrete from Dujiangyan,the macro properties and their relationships are attained,and the microcrack's characteristics are gotten through microstructure morphology analysis.Moreover,the paper discusses the relationships between the macro properties and the micro-flaw.It concluded that high mortar content and micro-cracks which should not be overlooked are the essential properties of the recycled concrete coarse aggregate,then the result may be information for practical application of recycled concrete coarse aggregate in the earthquake area.
It is necessary to conduct scientific experiments on performance of recycled coarse aggregate for its great effects on the physical and mechanical properties of recycled coarse aggregate concrete.By experimental research on recycled coarse aggregate made of earthquake waste concrete from Dujiangyan,the macro properties and their relationships are attained,and the microcrack's characteristics are gotten through microstructure morphology analysis.Moreover,the paper discusses the relationships between the macro properties and the micro-flaw.It concluded that high mortar content and micro-cracks which should not be overlooked are the essential properties of the recycled concrete coarse aggregate,then the result may be information for practical application of recycled concrete coarse aggregate in the earthquake area.
引文
[1]肖建庄,谢贺,等.汶川地震灾区建筑废物统计分析[J].四川大学学报,2009(3):188-194.
[2]丁浩然,王清远.再生混凝土的耐久性及其改进措施[J].四川建筑,2007,27(S1):194-197.
[3]石宵爽,王清远.从灾后重建探讨再生混凝土的研究现状及其应用发展[J].四川大学学报(工程科学版),2009,41(3):301-310.
[4]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008.
[5]赵军,邓志恒,等.再生混凝土粗骨料性能的试验研究[J].水泥与混凝土,2007(4):17-20.
[6]李坤,张英华.再生混凝土粗骨料的基本性能试验研究[J].建筑科学,2006,22(5):58-60.
[7]JGJ53-92普通混凝土用碎石或卵石质量标准及检验方法[S].
[8]Marta S J,Pilar A G.Influence of attached mortar content on theproperties of recycled concrete aggregate[C]//Proceeding of In-ternational Conference on sustainable waste management and recy-cling:Construction and demolition waste,2004.
[9]Tam W Y,Tam C M.Vivian Removal of cement mortar remainsfrom recycled aggregate using pre-soaking approaches[J].ResourcesConservation&Recycling,2007.
[10]Sanchez de Juan M,Pilair Alaejos.Study on the influence of atta-ched mortar content on the properties of recycled concrete aggregate[J].Construction and Building Materials,2008.
[2]丁浩然,王清远.再生混凝土的耐久性及其改进措施[J].四川建筑,2007,27(S1):194-197.
[3]石宵爽,王清远.从灾后重建探讨再生混凝土的研究现状及其应用发展[J].四川大学学报(工程科学版),2009,41(3):301-310.
[4]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008.
[5]赵军,邓志恒,等.再生混凝土粗骨料性能的试验研究[J].水泥与混凝土,2007(4):17-20.
[6]李坤,张英华.再生混凝土粗骨料的基本性能试验研究[J].建筑科学,2006,22(5):58-60.
[7]JGJ53-92普通混凝土用碎石或卵石质量标准及检验方法[S].
[8]Marta S J,Pilar A G.Influence of attached mortar content on theproperties of recycled concrete aggregate[C]//Proceeding of In-ternational Conference on sustainable waste management and recy-cling:Construction and demolition waste,2004.
[9]Tam W Y,Tam C M.Vivian Removal of cement mortar remainsfrom recycled aggregate using pre-soaking approaches[J].ResourcesConservation&Recycling,2007.
[10]Sanchez de Juan M,Pilair Alaejos.Study on the influence of atta-ched mortar content on the properties of recycled concrete aggregate[J].Construction and Building Materials,2008.
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