文献类型：期刊文献

英文题名：Strength, microstructure and nanomechanical properties of recycled aggregate concrete containing waste glass powder and steel slag powder

作者：Zhan, Pei-min[1,2];Zhang, Xiao-xiang[1];He, Zhi-hai[1];Shi, Jin-yan[3];Gencel, Osman[4];Yen, Nguyen Thi Hai[5];Wang, Guo-cai[6]

机构：[1]Shaoxing Univ, Coll Civil Engn, Shaoxing 312000, Peoples R China;[2]Tongji Univ, Key Lab Adv Civil Engn Mat, Minist Educ, Shanghai 201804, Peoples R China;[3]Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China;[4]Bartin Univ, Dept Civil Engn, TR-74100 Bartin, Turkey;[5]Ind Univ Ho Chi Minh City, Dept Civil Engn, 12 Nguyen Bao,Ward 4, Ho Chi Minh 700000, Vietnam;[6]Shao Xing Test Inst Qual & Tech Supervis, Shaoxing 312000, Peoples R China

年份：2022

卷号：341

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：SCI-EXPANDED(收录号：WOS:000784303200002)、、EI(收录号：20220711635542)、Scopus(收录号：2-s2.0-85124479938)、WOS

基金：Acknowledgments The authors would like to acknowledge the Natural Science Foun-dation of Zhejiang Province (Grant No. LY20E020006) , the International Scientific and Technological Cooperation Project of Shaoxing University (Grant No. 2019LGGH1009) and National Natural Science Foundation of China (Grant No. 51602198) for their financial support to the work present in this paper.

语种：英文

外文关键词：Recycled aggregate concrete; Glass powder; Steel slag powder; Nanomechanical properties; Microstructure

外文摘要：The reuse of construction and demolition wastes for producing recycled aggregate concrete (RAC) is an effective way to improve building materials sustainability and reduce the environment burden. In this study, the synergistic effect of steel slag powder (SSP) and waste glass powder (GP) on the compressive strength, microstructure and nanoscale characteristics of RAC are investigated. The results indicate that SSP and GP have a significant synergistic effect in improving the performance of RACs. RAC with 10% GP and 20% SSP has the highest compressive strength, and its 28-day and 120-day compressive strengths have increased by 28.3% and 22.8% respectively relative to plain concrete. Meanwhile, the RAC with SSP and GP has a lower porosity and a high volume fraction of high-density C-S-H, which are beneficial to improving the internal microstructure of the RAC. In addition, the incorporation of SSP and GP not only improves the microstructure of the matrix, but also reduces the width of the interface transition zone (ITZ) between the recycled aggregate and the new matrix. When 10% GP and 20% SSP are incorporated, the width of the new ITZ of RAC is reduced by 36.36%, and the average elastic modulus is increased by 64.6% compared to plain concrete. This research not only improves the performance of RAC, but also provides an effective way for the comprehensive utilization of the multiple solid wastes in concrete material.