Abstract: Foam concrete is widely used in the construction industry due to its low weight, good sound insulation, heat insulation, and seismic perfor-mance. Traditional foam concrete uses cement as the binder, which results in high carbon emissions. To reduce carbon emissions, municipal solid waste incineration bottom ash (MIBA) is partially used to replace cement to prepare MIBA foam concrete (MIBAFC). Based on the optimal foaming agent, alkali-activated technology is further used to improve the performance of foam concrete. The effects of different types of activators on the mechanical properties, water absorption rate, and drying shrinkage of MIBAFC were studied, and the microstructure and hydration characteristics of alkali-activated MIBAFC were tested using BSE, SEM, TG-DTG, and XRD. The results show that CaO+Na2CO3 (CN), NaOH (NH), water glass+K2CO3 (SK), and water glass (NS) can all undergo polymerization reaction with the active components such as SiO2 and Al2O3 in MIBA, which improves the degree of hydration reaction and the pore structure of the hardened slurry. This significantly improves the setting time, water absorption rate, mechanical properties, and drying shrinkage of MIBAFC. Among the four activators, NS has the best overall modification effect, while CN has no significant effect.
通讯作者:
*张鸿儒,福州大学土木工程学院副研究员、博士研究生导师。2007—2016年在浙江大学建筑工程学院获得学士、博士学位。目前主要从事混凝土结构耐久性、再生骨料混凝土改性技术以及混凝土多尺度性能劣化等方面的研究工作。发表论文30余篇,包括Construction and Building Materials、Journal of Building Engineering、Journal of Materials in Civil Engineering等。hrzh@fzu.edu.cn
1 Xie Y, Wu X M, Fan Y M, et al. Journal of South China University of Technology (Natural Science Edition), 2009, 37(12), 37 (in Chinese). 谢燕, 吴笑梅, 樊粤明, 等. 华南理工大学学报(自然科学版), 2009, 37(12), 37. 2 Makarichi L, Jutidamrongphan W, Techato K. Renewable Sustainable Energy Reviews, 2018, 91, 812. 3 Huang Y M. Study on the leaching behavior of heavy metals and microbial community structure in stabilized fly ash and municipal solid waste co-disposal under simulated rainfall environment. Master's Thesis, Qingdao University of Technology, China, 2019 (in Chinese). 黄耀民. 模拟降雨环境下稳定化飞灰与生活垃圾混合填埋的重金属溶出行为及微生物群落结构研究. 硕士学位论文,青岛理工大学, 2019. 4 Ghouleh Z, Shao Y X. Journal Cleaner Production, 2018, 195, 268. 5 Lynn C J, Dhir P K, Ghataora G S. Construction and Building Materials, 2016, 127, 504. 6 Tang P, Xuan D X, Cheng H W, et al. Journal of Hazardous Materials, 2020, 381, 120951. 7 Amran Y H M, Farzadnia N, Ali A A A. Construction and Building Materials, 2015, 101, 990. 8 Raj A, Sathyan D, Mini K M. Construction and Building Materials, 2019, 221, 787. 9 Habert G, de Lacaillerie J B D, Roussel N. Journal of Cleaner Production, 2011, 19(11), 1229. 10 Van den Heede P, De Belie N. Cement Concrete Composites, 2012, 34(4), 431. 11 Sanjayan J G, Nazari A, Chen L, et al. Construction Building Materials, 2015, 79, 236. 12 Ahmaruzzaman M. Progress in Energy and Combustion Science, 2010, 36(3), 327. 13 Yip C K, Lukey G C, van Deventer J S J. Cement and Concrete Research, 2005, 35(9), 697. 14 Zhang B B, Ma Y, Zheng D D, et al. Journal of Building Engineering, 2023, 72, 106664. 15 Huang G D, Yang K, Sun Y H, et al. Construction and Building Materials, 2020, 248, 118582. 16 Maldonado-Alameda A, Giro-Paloma J, Svobodova-Sedlackova A, et al. Journal Cleaner Production, 2019, 242, 118443. 17 Zhu W P, Chen X, Struble L J, et al. Cement & Concrete Composites, 2019, 99, 175. 18 Reisi M, Dadvar S A, Sharif A. Magazine Concrete Research, 2017, 69(23), 1218. 19 Fang Y H, Wang R, Pang E B, et al. Journal of the Chinese Ceramic Society, 2010, 38(4), 621(in Chinese). 方永浩, 王锐, 庞二波, 等. 硅酸盐学报, 2010, 38(4), 621. 20 Tan X J, Chen W Z, Hao Y G, et al. Advances in Materials Science Engineering, 2014, 2014, 514759. 21 Sun Y X, Zhang T, Ding W L, et al. Petroleum Geology & Experiment, 2022, 44(6), 1105. 22 Wang X. Investigation of effect of sodium carbonate on properties of alkali-activated slag cement. Master's Thesis, Chongqing University, China, 2016 (in Chinese). 王新. 碳酸钠对碱矿渣水泥性能的影响研究. 硕士学位论文,重庆大学, 2016. 23 Han M F, Meng X X, Xu Z S. Bulletin of the Chinese Ceramic Society, 2009, 28(5), 893(in Chinese). 韩敏芳, 孟宪娴, 许泽胜. 硅酸盐通报, 2009, 28(5), 893. 24 Dang J T, Tang X S, Xiao J Z,et al. Cement & Concrete Composites, 2023, 145, 105341. 25 He H Y, Liu H L, Guo Y, et al. Journal of Materials Research and Technology-JMR&T, 2022, 21, 2663. 26 Hou J J. Research on the mesoscopic hydration reaction and nucleation mechanism of phosphogypsum-cement cementitious materials. Master's Thesis, China University of Geosciences, China, 2022 (in Chinese). 候姣姣. 磷石膏-水泥复合胶凝材料的细观水化反应机理和成核研究. 硕士学位论文,中国地质大学, 2022. 27 Zhao M Q. Extreme early age strength prediction of concrete based on maturity method. Master's Thesis, Hefei University of Technology, China, 2021 (in Chinese). 赵明强. 基于成熟度方法的混凝土极早龄期强度预测. 硕士学位论文,合肥工业大学, 2021. 28 Deng X, Guo H, Tan H, et al. Construction and Building Materials, 2022, 360, 129516. 29 Zhang B, Tan H, Shen W, et al. Cement and Concrete Composites, 2018, 92, 7. 30 Ma B, Zhang T, Tan H, et al. Construction and Building Materials, 2018, 179, 89. 31 Hao Y F, Yang G Z, Liang K K. Cement & Concrete Composites, 2022, 128, 104447.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
