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Advances in Concrete Construction Volume 15, Number 3, March 2023 , pages 149-159 DOI: https://doi.org/10.12989/acc.2023.15.3.149 |
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 open accessEffect of activator types on cement mortar with polymeric aluminum chloride waste residue |
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Ping Xu, Yuhao Cui, Dong Han, Minxia Zhang and Yahong Ding
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| Abstract | ||
| Water glass (WG) and sodium sulfate (SS) were used to prepare polymeric aluminum chloride residue cement mortar (PACRM) by single and compound blending with polymeric aluminum chloride waste residue, respectively. The structural strength and textural characteristics examinations showed that PACRM consistency increased by incorporating WG, but decreased by incorporating SS. When WG and SS were compounded, the mortar consistency initially rose before falling. The compressive strength of PACRM increased and then decreased as WG was increased. The mechanical properties of PACRM were better enhanced by SS than WG, showing no strength deterioration. The main reason for the improved mechanical properties of polymeric aluminum chloride waste residue in the presence of activators is the increased precipitation of reactive substances, such as C-S-H gels, calcium silica, and Ca(OH)2. The density of the specimens with PACRM and the degree of aggregation of hydration products were significantly enhanced by generating more hydration products in the mortar. Further, the cracks and pores were significantly reduced, and the matrix structure was continuous and dense at 5% SS doping and 3% compound doping. | ||
| Key Words | ||
| alkali-activated reagents; compressive strength; microstructure; polymeric aluminum chloride residue | ||
| Address | ||
| (1) Ping Xu, Yuhao Cui, Minxia Zhang, Yahong Ding: College of Civil Engineering, Henan Polytechnic Univ., Jiaozuo, Henan 454003, China; (2) Dong Han: Citic Heavy Industry Engineering Technology Co. LTD, Luoyang City, Henan 471000, China. | ||
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