INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Research and Application of Surface Modification Technology of Manufactured Sand |
GAO Yuxin, LIU Ming, ZENG Chao, WANG Futao, WANG Peng, YE Zi, ZHANG Lei
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China West Construction Academy of Building Materials Co., Ltd., Chengdu 610052, China |
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Abstract The deterioration of concrete performance caused by manufactured sand with clay has become an urgent problem to be solved in concrete industry. Silicon-based waterproofing agent and clay anti-swelling agent were used as the two-component surface modifier. The modifier was applied to pretreat the surface of manufactured sand, which can improve the working performance of concrete with clay. The effects of the type and amount of modifier on the water absorption and methylene blue value (MB value) of manufactured sand, as well as the relationship with the adsorption amount of superplasticizer and the spacing between clay layers were investigated. The influence of surface modification treatment on the rheological behavior of mortar, the working performance, mechanical performance and durability of concrete was studied. For the two-component modifier, the optimal mass ratio of water-proofing agent and anti-swelling agent was 6∶4, and the optimal dosage was 1.5‰ of the quality of the manufactured sand. After surface treatment, the water absorption of manufactured sand was reduced by 42.3% and MB value decreased from 3.2 to 1.5. The dosage of superplasticizer can be reduced by 5.7%—14.3%, and the slump flow of 1.5 h can be increased by 70—120 mm. The results show that the surface modification technology can improve the fluidity and retention of the concrete and enhance the mechanical perfor-mance and durability of the concrete,and also reduce the fluctuation of concrete working performance caused by the variation of clay content and clay species.
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Published: 25 November 2021
Online: 2021-12-13
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About author: Yuxin Gaoreceived his B.E. degree in Wuhan University of Technology. Now he is Ph.D.candidate of Chongqing University. His research interests focus on the research and application of cement concrete, special cementitious materials and solid waste disposal and resource utilization, etc. He participated in compiling 4 departments of industry and local standards, and published more than 55 academic papers, including 13 papers included in EI/ISTP. |
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1 Dalas F, Pourchet S, Nonat A, et al. Cement and Concrete Research, 2015, 71,115. 2 Lyu S, Liu J, Zhou Q, et al. Industrial & Engineering Chemistry Research, 2014, 53(10),3908. 3 Ng P G, Cheah C B, Ng E P, et al. Construction and Building Mate-rials, 2020, 242,118103. 4 Ren Q, Zou H, Liang M, et al. RSC Advances, 2014, 4, 44018. 5 Stecher J, Plank J. Cement and Concrete Research, 2019, 119,36. 6 Tian H, Kong X, Su T, et al. Cement and Concrete Research, 2019, 115,43. 7 Xing G B, Wang W P, Xu J. RSC Advances, 2016, 6,106921. 8 Emaldi I, Hamzehlou S, Erkizia E, et al. Polymer Chemistry, 2019, 10(8),1000. 9 Tsukada K, Ishimori M, Kinoshita M. ACI Symposium Publication, 2003, 217,393. 10 Pop A, Badea C, Ardelean I.Applied Magnetic Resonance,2013,44(10), 1223. 11 Vickers T M, Farrington S A, Bury J R, et al. Cement and Concrete Research, 2005, 35(10), 1882. 12 Elavenil S, Bhoopathy V. International Journal of Mechanical Enginee-ring Research & Development, 2013,3, 1. 13 Jadhav P. International Journal for Computational Civil & Structural Engineering, 2013, 3(3), 621. 14 Norvell J K, Stewart J G, Juenger M C G, et al. Journal of Materials in Civil Engineering, 2007, 19(12), 1053. 15 Shen W G, Yang Z G, Cao L H, et al. Construction & Building Mate-rials, 2016, 119,385. 16 Chen X, Guo Y G, Li B, et al. Construction & Building Materials, 2020, 240, 117953. 17 Nehdi M L. Construction and Building Materials, 2014, 51,372. 18 Wang L, Wang D M, Bao W Z. Journal of Wuhan University of Techno-logy, 2013, 35(8), 6(in Chinese). 王林, 王栋民, 包文忠.武汉理工大学学报, 2013, 35(8), 6. 19 Wang Z M, Wu H, Xu Y, et al. Journal of Building Materials, 2014, 17(2),234(in Chinese). 王子明, 吴昊, 徐莹, 等.建筑材料学报, 2014, 17(2),234. 20 Ng S, Plank J. Cement and Concrete Research, 2012, 42(6), 847. 21 Li C Z, Feng N Q, Li Y D, et al. Cement & Concrete Research, 2005, 35(5), 867. 22 Lei L, Plank J. Cement and Concrete Research, 2012, 42(10), 1299. 23 Li Y, Guo H, Zhang Y, et al. Carbohydrate Polymers, 2014, 102,278. 24 Liu X, Guan J, Lai G, et al. Journal of Industrial and Engineering Chemistry, 2017, 55,80. 25 Tang X, Zhao C, Yang Y, et al. Construction & Building Materials, 2020, 252,119052. 26 Xu H, Sun S, Wei J, et al. Industrial & Engineering Chemistry Research, 2015, 54(37), 9081. 27 Li X K, Zheng D F, Zheng T, et al. Journal of Industrial & Engineering Chemistry, 2017, 49, 168. 28 Liu S, Mo X, Zhang C, et al. Journal of Dispersion Science & Techno-logy, 2004, 25(1), 63. 29 Tan H B, Guo Y L, Ma B G, et al. Ksce Journal of Civil Engineering, 2018, 22(8), 2934. 30 Lei L, Plank J. Cement & Concrete Research, 2014, 60,1. 31 Sakai E, Atarashi D, Daimon M. In: Proceedings of the 6th International Symposium on Cement & Concrete. Xi'an, China,2006. 32 Kirthika S K, Maruthupandian S, Singh S K. Construction and Building Materials, 2019, 228,116811. 33 Hasdemir S, Tuřrul A, Yılmaz M. Construction and Building Materials, 2016, 112,940. 34 Jerath S, Hanson N. Journal of Materials in Civil Engineering, 2007, 19(5), 367. 35 Kumar S, Gupta R C, Shrivastava S, et al. Construction & Building Materials, 2016, 107,103. 36 Kumar M, Singh N P, Singh N B. Indian Journal of Chemical Technology, 2009, 16,499. 37 Kagi D A,Ren K B. Building & Environment, 1995, 30(2),237. 38 Casagrande C A, Jochem L F, Onghero L, et al. Journal of Building Engineering, 2020, 29,101226. 39 Churchman G J. Applied Clay Science, 2002, 21(3), 177. 40 Liu X M, Chia K S, Zhang M H. Construction and Building Materials, 2011, 25(1), 335. 41 Anderson R L, Ratcliffe I, Greenwell H C, et al. Earth-Science Reviews, 2010, 98(3), 201. 42 Borralleras P, Segura I, Aranda M A G, et al. Cement and Concrete Research, 2019, 116,266. 43 Ferrari L, Kaufmann J, Winnefeld F, et al. Journal of Colloid and Interface Science, 2010, 347(1), 15. 44 Bai J J, Wang M, Shi C J, et al. Materials Reports, 2020, 34(6), 06172(in Chinese). 白静静, 王敏, 史才军,等.材料导报, 2020, 34(6), 06172. 45 Fernandes V A, Purnell P, Still G T, et al. Cement and Concrete Research, 2007, 37(5), 751. |
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