再生混凝土改性研究现状
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摘要
本文阐述了现有废弃混凝土的利用现状及加工工艺。介绍了不同改性方式对再生混凝土性能的影响,从混凝土微观三相结构的角度对现有再生混凝土改性方法进行总结,同时分析改性原理及其优缺点。在现有改性方式的基础上,总结得出改进破碎方式、降低能耗、寻找新型添加剂及纤维材料能提高再生混凝土质量,促进废弃混凝土的大规模利用。
Recycled concrete made from wasted aggregate has received much attention in current construction industry. The utilization status in quo and the existing processing technology of waste concrete recycling is reviewed in this paper. In order to understand the influence of different modification methods on the performance of recycled concrete, the modification methods of existing recycled concrete were summarized from the viewpoint of concrete micro three phase structure. Meanwhile, the principle, advantages and disadvantages of the modification are analyzed. In view of the shortcomings of the existing methods of modification of recycled concrete, the development trend was prospected. Optimization of crusher, environmental modification method with low energy consumption and the search for new additives and fiber materials are more conducive to the development of recycled concrete.
Recycled concrete made from wasted aggregate has received much attention in current construction industry. The utilization status in quo and the existing processing technology of waste concrete recycling is reviewed in this paper. In order to understand the influence of different modification methods on the performance of recycled concrete, the modification methods of existing recycled concrete were summarized from the viewpoint of concrete micro three phase structure. Meanwhile, the principle, advantages and disadvantages of the modification are analyzed. In view of the shortcomings of the existing methods of modification of recycled concrete, the development trend was prospected. Optimization of crusher, environmental modification method with low energy consumption and the search for new additives and fiber materials are more conducive to the development of recycled concrete.
引文
[1] 何世钦,朱忠锋,李贺,等.建筑废弃混凝土再生利用新技术的试验研究[J].混凝土,2013(2):121～123.
[2] 吕智英.混凝土再生骨料的研究动态与发展趋势[J].混凝土,2010(6):77～82.
[3] Sagoe-Crentsil K K,Brown T,Taylor A H.Performance of Concrete Made with Commercially Produced Coarse Recycled Concrete Aggregate[J].Cement & Concrete Research,2001,31(5):707～712.
[4] Olorunsogo F T,Padayachee N.Performance of Recycled Aggregate Concrete Monitored by Durability Indexes[J].Cement & Concrete Research,2002,32(2):179～185.
[5] Otsuki N,Miyazato S,Yodsudjai W.Influence of Recycled Aggregate on Interfacial Transition Zone,Strength,Chloride Penetration and Carbonation of Concrete[J].Journal of Materials in Civil Engineering,2003,15(5):443～451.
[6] 李秋义,全洪珠,秦原.混凝土再生骨料[M].北京:中国建筑工业出版社,2011:213～214.
[7] Li K F,Zeng Q.Influence of Freezing Rate on Cryo-damage of Cementitious Material[J].Journal of Zhejiang University- SCIENCE A,2009,10(1):17～21.
[8] 肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008:12～14.
[9] 肖建庄,孙振平,李佳彬,等.废弃混凝土破碎及再生工艺研究[J].建筑技术,2005,36(2):141～144.
[10] Tam V,Tam C M.Diversifying Two-stage Mixing Approach (TSMA) for Recycled Aggregate Concrete:TSMAs and TSMAsc [J].Construction & Building Materials,2008,22(10):2068～2077.
[11] 张昌波.美国再生混凝土骨料的应用[J].建筑机械,2008(15):52～53.
[12] Bisschop J,Mier J G M V.Effect of Aggregates on Drying Shrinkage Microcracking in Cement-based Composites[J].Materials & Structures,2002,35(8):453～461.
[13] 张大伟,杨光.高压脉冲发生器对混凝土放电的特性探究[J].电子制作,2014(1):52～52.
[14] 姜越川.再生骨料改性处理研究[J].混凝土,2011(7):85～86.
[15] 孙犁,钱大行,张日华.再生粗骨料性能改善试验研究[J].混凝土,2008(3):58～60.
[16] 李秋义,李云霞,朱崇绩.颗粒整形对再生粗骨料性能的影响[J].材料科学与工艺,2005,13(6):579～581.
[17] Chen Y G,Sun Z P,Xiao J Z.Charcteristics and Strengthening Methods of Interfacial Zone Between Aggaragate and Cement Paste in Recyeled-aggregate Concrete[J].Concrete,2004(2):10～13.
[18] Akbarnezhad A,Ong K C G,Zhang M H,et al.Microwave- assisted Beneficiation of Recycled Concrete Aggregates[J].Construction & Building Materials,2011,25(8):3469～3479.
[19] 肖建庄,吴磊,范玉辉.微波加热再生粗骨料改性试验[J].混凝土,2012(7):55～57.
[20] 高鹤,武国平,袁晓文.不同方法改性后再生骨料混凝土力学性能研究[J/OL].城市建设理论研究,2015,5(20):4491-4492[2015-08-03].http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=csjsllyj2015202876
[21] Zhu Y G,Kou S C,Poon C S,et al.Influence of Silane-based Water Repellent on the Durability Properties of Recycled Aggregate Concrete[J].Cement & Concrete Composites,2013,35(1):32～38.
[22] 王子明,裴学东,王志元.用聚合物乳液改善废弃混凝土作集科的砂浆强度[J].混凝土,1999(2):44～47.
[23] 朱亚光,徐培蓁.硅烷与PVA对再生混凝土粗骨料改性试验研究[J].混凝土,2015(3):93～95.
[24] Huiwen W,Liguan Y.Zhoyhe S.Modificatin of ITZ Structure and Properties of Regenerated Concrete[J].Journal of Wuhan University of Technology(Materials Science),2006,21(2):128～132.
[25] 李秋义,韩帅,等.物理化学强化对再生混凝土抗氯离子渗透性能的影响[J].材料科学与工程学报,2016,34(3):432～436.
[26] 李亚可.二氧化碳强化再生骨料改进其性能的研究[D].长沙:湖南大学,2014.
[27] 王社良,李涛,杨涛,等.掺加硅粉及纤维的再生混凝土柱抗震性能试验研究[J].建筑结构学报,2013,34(5):122～129.
[28] Debieb F,Courard L,Kenai S,et al.Mechanical and Durability Properties of Concrete using Contaminated Recycled Aggregates [J].Cement & Concrete Composites,2010,32(6):421～426.
[29] Swamy R N,Mangat P S.A Theory for the flexural strength of steel fiber reinforced concrete[J].Cement & Concrete Research,1974,4(2):313～325.
[30] Feldman D,Zheng Z.Synthetic Fibres for Fibre Concrete Composites[J].Mrs Proceedings,1993,305:123.
[31] 冯玲.聚丙烯纤维再生混凝土的力学性能试验研究[D].西安:西安建筑科技大学,2012.
[32] Ajdukiewicz A,Kliszczewicz A.Influence of Recycled Aggregates on Mechanical Properties of HS/HPC[J].Cement & Concrete Composites,2002,24(2):269～279.
[33] 傅博.纤维改性再生混凝土及砂浆的基本性能研究[D].宁夏:宁夏大学,2010.
[34] 梁芮,于江,秦拥军.废弃混凝土再生骨料的研究综述[J].混凝土,2013(5):93～96.
[35] 杨青,钱晓倩,钱匡亮,等.再生混凝土纳米复合强化试验[J].材料科学与工程学报,2011,29(1):66～69.
[36] 孔德玉,盛毅生,等.硅溶胶分散硅粉浆液涂覆强化新老混凝土界面[J].稀有金属材料与工程,2008,37(S2):695～699.
[37] Cohen L J,Romualdi J P.Stress,Strain and Displacement Fields in a Composile Material Reinforced with Discontinuous Fibers[J].Journal of the Franklin Institute,1967,284(6):388～406.
[38] Swamy R N,Mangat P S.A Theory for the Flexural Strength of Steel Fiber Reinforced Concrete[J].Cement & Concrete Research,1974,4(2):313～325.
[2] 吕智英.混凝土再生骨料的研究动态与发展趋势[J].混凝土,2010(6):77～82.
[3] Sagoe-Crentsil K K,Brown T,Taylor A H.Performance of Concrete Made with Commercially Produced Coarse Recycled Concrete Aggregate[J].Cement & Concrete Research,2001,31(5):707～712.
[4] Olorunsogo F T,Padayachee N.Performance of Recycled Aggregate Concrete Monitored by Durability Indexes[J].Cement & Concrete Research,2002,32(2):179～185.
[5] Otsuki N,Miyazato S,Yodsudjai W.Influence of Recycled Aggregate on Interfacial Transition Zone,Strength,Chloride Penetration and Carbonation of Concrete[J].Journal of Materials in Civil Engineering,2003,15(5):443～451.
[6] 李秋义,全洪珠,秦原.混凝土再生骨料[M].北京:中国建筑工业出版社,2011:213～214.
[7] Li K F,Zeng Q.Influence of Freezing Rate on Cryo-damage of Cementitious Material[J].Journal of Zhejiang University- SCIENCE A,2009,10(1):17～21.
[8] 肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008:12～14.
[9] 肖建庄,孙振平,李佳彬,等.废弃混凝土破碎及再生工艺研究[J].建筑技术,2005,36(2):141～144.
[10] Tam V,Tam C M.Diversifying Two-stage Mixing Approach (TSMA) for Recycled Aggregate Concrete:TSMAs and TSMAsc [J].Construction & Building Materials,2008,22(10):2068～2077.
[11] 张昌波.美国再生混凝土骨料的应用[J].建筑机械,2008(15):52～53.
[12] Bisschop J,Mier J G M V.Effect of Aggregates on Drying Shrinkage Microcracking in Cement-based Composites[J].Materials & Structures,2002,35(8):453～461.
[13] 张大伟,杨光.高压脉冲发生器对混凝土放电的特性探究[J].电子制作,2014(1):52～52.
[14] 姜越川.再生骨料改性处理研究[J].混凝土,2011(7):85～86.
[15] 孙犁,钱大行,张日华.再生粗骨料性能改善试验研究[J].混凝土,2008(3):58～60.
[16] 李秋义,李云霞,朱崇绩.颗粒整形对再生粗骨料性能的影响[J].材料科学与工艺,2005,13(6):579～581.
[17] Chen Y G,Sun Z P,Xiao J Z.Charcteristics and Strengthening Methods of Interfacial Zone Between Aggaragate and Cement Paste in Recyeled-aggregate Concrete[J].Concrete,2004(2):10～13.
[18] Akbarnezhad A,Ong K C G,Zhang M H,et al.Microwave- assisted Beneficiation of Recycled Concrete Aggregates[J].Construction & Building Materials,2011,25(8):3469～3479.
[19] 肖建庄,吴磊,范玉辉.微波加热再生粗骨料改性试验[J].混凝土,2012(7):55～57.
[20] 高鹤,武国平,袁晓文.不同方法改性后再生骨料混凝土力学性能研究[J/OL].城市建设理论研究,2015,5(20):4491-4492[2015-08-03].http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=csjsllyj2015202876
[21] Zhu Y G,Kou S C,Poon C S,et al.Influence of Silane-based Water Repellent on the Durability Properties of Recycled Aggregate Concrete[J].Cement & Concrete Composites,2013,35(1):32～38.
[22] 王子明,裴学东,王志元.用聚合物乳液改善废弃混凝土作集科的砂浆强度[J].混凝土,1999(2):44～47.
[23] 朱亚光,徐培蓁.硅烷与PVA对再生混凝土粗骨料改性试验研究[J].混凝土,2015(3):93～95.
[24] Huiwen W,Liguan Y.Zhoyhe S.Modificatin of ITZ Structure and Properties of Regenerated Concrete[J].Journal of Wuhan University of Technology(Materials Science),2006,21(2):128～132.
[25] 李秋义,韩帅,等.物理化学强化对再生混凝土抗氯离子渗透性能的影响[J].材料科学与工程学报,2016,34(3):432～436.
[26] 李亚可.二氧化碳强化再生骨料改进其性能的研究[D].长沙:湖南大学,2014.
[27] 王社良,李涛,杨涛,等.掺加硅粉及纤维的再生混凝土柱抗震性能试验研究[J].建筑结构学报,2013,34(5):122～129.
[28] Debieb F,Courard L,Kenai S,et al.Mechanical and Durability Properties of Concrete using Contaminated Recycled Aggregates [J].Cement & Concrete Composites,2010,32(6):421～426.
[29] Swamy R N,Mangat P S.A Theory for the flexural strength of steel fiber reinforced concrete[J].Cement & Concrete Research,1974,4(2):313～325.
[30] Feldman D,Zheng Z.Synthetic Fibres for Fibre Concrete Composites[J].Mrs Proceedings,1993,305:123.
[31] 冯玲.聚丙烯纤维再生混凝土的力学性能试验研究[D].西安:西安建筑科技大学,2012.
[32] Ajdukiewicz A,Kliszczewicz A.Influence of Recycled Aggregates on Mechanical Properties of HS/HPC[J].Cement & Concrete Composites,2002,24(2):269～279.
[33] 傅博.纤维改性再生混凝土及砂浆的基本性能研究[D].宁夏:宁夏大学,2010.
[34] 梁芮,于江,秦拥军.废弃混凝土再生骨料的研究综述[J].混凝土,2013(5):93～96.
[35] 杨青,钱晓倩,钱匡亮,等.再生混凝土纳米复合强化试验[J].材料科学与工程学报,2011,29(1):66～69.
[36] 孔德玉,盛毅生,等.硅溶胶分散硅粉浆液涂覆强化新老混凝土界面[J].稀有金属材料与工程,2008,37(S2):695～699.
[37] Cohen L J,Romualdi J P.Stress,Strain and Displacement Fields in a Composile Material Reinforced with Discontinuous Fibers[J].Journal of the Franklin Institute,1967,284(6):388～406.
[38] Swamy R N,Mangat P S.A Theory for the Flexural Strength of Steel Fiber Reinforced Concrete[J].Cement & Concrete Research,1974,4(2):313～325.