MATERIALS AND SUSTAINABLE DEVEL OPMENT: MATERIALS REMANUFACTURING AND WASTE RECYCLING |
|
|
|
|
|
Review on Enhancement Methods of Recycled Aggregate |
WANG Yasi1,2,3, ZHENG Jianlan1,2,3, YOU Fan1,2,3
|
1 College of Civil Engineering, Fuzhou University, Fuzhou 350108, China 2 College of Engineering, Fujian Jiangxia University, Fuzhou 350108, China 3 Coordinative Innovation Center for Environmentally Friendly and Energy Saving HPC of Fujian Province, Fuzhou 350108, China |
|
|
Abstract Recycled aggregate concrete, as a new environmental protection material, meets the strategy of saving resources and energy, reducing environmental pollution and sustainable development. It is the main research and promotion direction of green concrete. The surface of recycled aggregate is adhered to old cement mortar, rough and angular, and contains a large number of holes and microcracks during secondary crushing. Compared with natural aggregate, recycled aggregate has some shortcomings, such as low density, high water absorption, large crushing index, poor firmness and large dispersion, and there is a weak interface between recycled aggregate and adhered mortar, which affect the performance of recycled aggregate concrete and restrict its application in practical engineering. So improving the performance of recycled aggregate is one of the key problems in the research of recycled aggregate concrete. The existing methods to improve the performance of recycled aggregate concrete mainly focus on the mixing method, adding mineral admixtures and optimizing the mix of concrete in the mixing stage, or by optimizing the gradation of recycled aggregate and reducing the replacement rate of recycled aggregate to reduce the adverse effect of recycled aggregate. However, the defect of recycled aggregate has not been substantially improved. The performance of recycled aggregate can be improved by enhancement treatments. The enhancement treatments mainly start with the mortar attached, and remove or enhance the old mortar by physical, chemical or biological methods, so as to enhance the performance of recycled aggregate, such as mechanical grinding, pre-soaking in pozzolanic solution, nanomate-rial slurry, carbonation, et al. In addition, the component recombination method can also improve the performance of recycled aggregates, and thus improve the performance of recycled aggregate concrete. In this paper, the research progress and their mechanism of each recycled aggregate enhancing methods at home and abroad were summarized, the strengthening effect of enhancement methods were analyzed, and the direction of further research on enhancing of recycled aggregate was put forward.
|
Published: 12 March 2021
|
|
Fund:Joint Funds of the National Natural Science Foundation of China (U1605242), the Natural Science Foundation of Fujian Province (2020J01941), the thematic research foundation of Fujian Jiangxia University (JXZ2018010). |
About author:: Jianlan Zheng, professor, Ph.D., doctoral supervisor of Fuzhou University, secretary of Fujian Jiangxia University, National Ten Million Talents Project Personnel, Outstanding Science and Technology Talents of Fujian Province, Leading Talents of Science and Technology Innovation of Fujian Province, Experts with Special Allowances of the State Council, Excellent Teachers of National Colleges and Universities of the Ministry of Education. He has been engaged in the research and development of structural engineering and modern concrete materials for a long time, and has trained doctoral and master’s students. In recent years, the research and application of self-compacting high-performance concrete and its structure, the research and application of volume stability of high-strength and high-performance concrete and recycled aggregate concrete, and the resource utilization of construction waste have been carried out systematically and tho-roughly. He has won one second prize for technological invention, four second prizes for science and technology in Fujian Province as the first accomplishor, four industry standards for China Civil Engineering Society and Fujian Engineering Construction, two patents for invention authorized by the state, and more than 100 academic papers and monographs published. >Yasi Wang received her master’s degree from Fuzhou University in June 2014. She is currently pursuing her Ph.D. at the College of Civil Engineering, Fuzhou University, under the guidance of Professor Zheng Jianlan. Her research interest is recycled aggregate concrete. |
|
|
1 Dai X M. Concrete,2012(1),1(in Chinese). 戴显明.混凝土,2012(1),1. 2 Geng J, Sun J Y, Mo L W, et al. Journal of Civil, Architectural & Environmental Engineering,2013,35(2),139(in Chinese). 耿健,孙家瑛,莫立伟,等.土木建筑与环境工程,2013,35(2),139. 3 Shi H S, Liu J W, Sun Z P, et al. Cement Engineering,2009(4),68(in Chinese). 施惠生,刘金为.水泥工程,2009(4),68. 4 Li J B, Xiao J Z, Sun Z P. Journal of Building Materials,2005,17(5),395(in Chinese). 李佳彬,肖建庄,孙振平.建筑材料学报,2005,17(5),395. 5 Tam V W Y, Soomro M, Jorge E, et al. Construction & Building Mate-rials,2018,172,290. 6 Kisku N, Joshi H, Ansari M, et al. Construction & Building Materials,2017,131,737. 7 Zhang J X, Zhang J H, Wu C S. Journal of Building Materials,2006,9(2),147(in Chinese). 张金喜,张建华,邬长森.建筑材料学报,2006,9(2),147. 8 Cui Z L, Lu S S, Wang Z S. Journal of Building Materials,2012,15(2),264(in Chinese). 崔正龙,路沙沙,汪振双.建筑材料学报,2012,15(2),264. 9 Poon C S, Shui Z H, Lam L. Construction & Building Materials,2004,18(6),468. 10 Sidorova A, Vazquez-Ramonich E, Barra-Bizinotto M, et al. Construction and Building Materials,2014,68,681. 11 Silva R V, Brito J D, Neves R, et al. Materials Research,2015,18(2),436. 12 Evangelista L, Brito J. Cement and Concrete Composites,2010,32(1),14. 13 Xiao J Z, Lin Z B, Zhu J. Journal of Sichuan University (Engineering Science Edition),2014,46(4),160(in Chinese). 肖建庄,林壮斌,朱军.四川大学学报(工程科学版),2014,46(4),160. 14 Shi C, Li Y, Zhang J, et al. Journal of Cleaner Production,2016,112(1),467. 15 Kong D, Lei T, Zheng J, et al. Construction & Building Materials,2010,24(5),707. 16 Dimitriou G, Savva P, Petrou M. Construction & Building Materials,2018,158,234. 17 Li Q Y, Quan H Z, Qin Y. Performance and application technology of recycled concrete, National Defense China Building Materials Industry Press, China,2010(in Chinese). 李秋义,全洪珠,秦原.再生混凝土性能与应用技术,中国建材工业出版社,2010. 18 Al-Bayati H K A, Das P K, Tighe S L, et al. Construction & Building Materials,2016,112,297. 19 Peng G F, Huang Y Z, Zhang J. Journal of Building Materials,2012,15(1),84(in Chinese). 朋改非,黄艳竹,张九.建筑材料学报,2012,15(1),84. 20 Katz A. Journal of Materials in Civil Engineering,2004,16(6),602. 21 Tam V, Tam C M, Le K N. Resources Conservation & Recycling,2007,50(1),97. 22 Kim Y, Hanif A, Kazmi S M S, et al. Journal of Cleaner Production,2018,191,347. 23 Shayan A, Xu A. Aci Materials Journal,2003,100(5),380. 24 Elhakam A A, Mohamed A E, Awad E. Construction & Building Mate-rials,2012,35,427. 25 Du T, Li H Q, Wu X G. New Building Materials,2002(3),8(in Chinese). 杜婷,李惠强,吴贤国.新型建筑材料,2002(3),8. 26 Cheng H L, Wang C Y. New Building Materials,2004(12),14(in Chinese). 程海丽,王彩彦.新型建筑材料,2004(12),14. 27 Kou S C, Poon C S. Cement and Concrete Composites,2010,32(8),653. 28 Zhang H R, Zhao Y X, Meng T, et al. Journal of Materials in Civil Engineering.2016,28(2),10. 29 Chuah S, Pan Z, Sanjayan J G, et al. Construction and Building Mate-rials,2014,73,121. 30 Xuan D, Zhan B, Chi S P. Cement & Concrete Composites,2016,65,74. 31 Pan G, Zhan M, Fu M, et al. Construction & Building Materials,2017,154,818. 32 Li Y, Pan G H, Fu M H. In: Conference Record of the 7th National Conference on Commercial Mortar. Guangzhou,2017,pp.387(in Chinese). 李阳,潘钢华,付明华.全国商品砂浆学术交流会.广州,2017,pp.387. 33 Grabiec A M, Klama J, Zawal D, et al. Construction & Building Mate-rials,2012,34(34),149. 34 Bui N K, Satomi T, Takahashi H. Construction & Building Materials,2017,148,383. 35 Khoury E, Ambros W, Cazaliu B, et al. Construction & Building Mate-rials,2018,175,712. 36 Gupta A, Mandal S, Ghosh S. Journal of Engineering & Applied Sciences,2012,7(1),106. 37 Wong Y D, Sun D D, Lai D. Waste Management,2007,27(2),300. 38 Qu Z Z. Architecture Technology,2001,32(2),104(in Chinese). 屈志中.建筑技术,2001,32(2),104. 39 Butler L. Evaluation of recycled concrete aggregate performance in structural concrete. Ph.D. Thesis,. University of Waterloo, Canada,2012. 40 Zhang H Y, Sun Z J. Journal of Foshan University,2006,24(2),14(in Chinese). 张华英,孙仲健.佛山科学技术学院学报,2006,24(2),14. 41 Weng Z Y. Experimental study on microstructure of recycled high perfor-mance concrete affected by intensified test. Master’s Thesis, Fuzhou University, China,2013(in Chinese). 翁志英.再生粗骨料强化预处理对高性能再生混凝土细观结构影响的试验研究.硕士学位论文,福州大学,2013. 42 Spaeth V, Djerbi Tegguer A. International Journal of Sustainable Built Environment,2013,2(2),148. 43 Li W G, Long C, Luo Z Y. Journal of Building Materials,2017,20(5),690(in Chinese). 李文贵,龙初,罗智予,等.建筑材料学报,2017,20(5),690. 44 Wang Z F, Zhang J J, Zhan S L, et al. Rare Metal Materials and Engineering,2010(2),413(in Chinese). 王章夫,张津践,詹树林,等.稀有金属材料与工程,2010(2),413. 45 Guo K, Ma H H, Wang Q. Journal of Architecture and Civil Engineering,2018,35(5,224(in Chinese). 郭凯,马浩辉,王强.建筑科学与工程学报,2018,35(5),224. 46 Shao Y X, Monkman Sean, Tran Stanley. Journal of the Chinese Ceramic Society,2010,38(9),1646(in Chinese). 邵一心,Monkman Sean, Tran Stanley.硅酸盐学报,2010,38(9),1646. 47 Abu ZakirMorshed, Yixin Shao. Journal of Sustainable Cement-Based Materials,2013(2),158. 48 Liang C F, Yang J C, Pan Y Q, et al. Journal of Functional Materials,2018,49(11),11050. 梁超锋,杨金城,潘艺倩,等.功能材料,2018,49(11),11050. 49 Hu W. Experimental study of preconditioning by CO2 to improve reinforcement corrosion performance in recycled aggregate concrete. Master’s Thesis, Fuzhou University, China,2017(in Chinese). 胡伟.CO2预处理改善再生混凝土中钢筋锈蚀性能试验研究.硕士学位论文,福州大学,2017. 50 Surong Luo, Shichang Ye, Jianzhuang Xiao, et al. Construction & Bui-lding Materials,2018,188,960. 51 Zhang J, Shi C, Li Y, et al. Construction and Building Materials,2015,98,5. 52 Silva R V, Neves R, Brito J D. Cement & Concrete Composites,2015,62,30. 53 Thiery M, Villain G, Dangla P, et al. Cement and Concrete Research,2007,37(7),1056. 54 Chunxiang Q, Jianyun W, Ruixing W, et al. Materials Science & Engineering C-Biomimetic and Supramolecular Systems,2009,29(4),1278. 55 Wang X M. The effect of separating fly ash on hydration characteristics and microstructure of recycled aggregate concrete. Master’s Thesis, Fuzhou University, China,2017(in Chinese). 王晓敏.分选粉煤灰对再生混凝土水化特性与细观结构的影响研究.硕士学位论文,福州大学,2017. 56 Otsuki N, Miyazato S I, Yodsudjai W. Journal of Materials in Civil Engineering,2003,15(5),451. |
|
|
|