January 2025
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52 Reads
ACS Sustainable Chemistry & Engineering
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Publications (6)
July 2024
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53 Reads
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5 Citations
Construction and Building Materials
April 2024
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22 Reads
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1 Citation
For solid waste-based cementitious materials, most scholars focus their research on the hydration reaction of cementitious materials, but there is still a lack of solid waste design that comprehensively considers mechanical properties and durability. Therefore, this article focuses on exploring the mix of design and the microscopic and macroscopic properties of multi solid waste cementitious materials (MSWCMs), namely steel slag (SS), slag powder (SP), desulfurization gypsum (DG), fly ash (FA), and ordinary Portland cement (OPC). According to the orthogonal experimental results, the compressive strength of MSWCMs is optimal when the OPC content is 50% and the SS, SP, DG, and FA contents are 10%, 20%, 5%, and 15%, respectively. The MSWCMs group with an OPC content of 50% and SS, SP, DG, and FA contents of 5%, 15%, 5%, and 25% was selected as the control group. The pure OPC group was used as the blank group, and the optimal MSWCMs ratio group had a 28-day compressive strength of 50.7 megapascals, which was 14% and 7.6% higher than the control group and blank group, respectively. The drying shrinkage rate and resistance to chloride ions were also significantly improved, with maximum increases of 22.9%, 22.6%, and 8.9%, 9.8%, respectively. According to XRD, TG-DTG, and NMR testing, the improvement in macroscopic performance can be attributed to the synergistic effect between various solid wastes. This synergistic effect produces more ettringite (AFt) and C-(A)-S-H gel. This study provides a good theoretical basis for improving the comprehensive performance of MSWCMs and is conducive to reducing the use of cement, with significant economic and environmental benefits.
February 2024
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30 Reads
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7 Citations
Construction and Building Materials
October 2023
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70 Reads
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14 Citations
Journal of Cleaner Production
January 2023
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34 Reads
Citations (3)
... Owing to this, various researchers, recommended the utilization of recycled coarse aggregate [22][23][24][25][26][27][28][29][30][31][32][33], steel slag aggregate [34][35][36][37][38][39], waste glass aggregates [40][41][42][43][44][45][46], ceramic waste aggregates [47][48][49][50], waste brick aggregate [51][52][53][54][55][56], E-waste aggregate [57][58][59][60], oil palm shell aggregate [61][62][63], coconut shell aggregate [64][65][66][67][68][69], Expanded Polystyrene aggregate [70][71][72][73][74][75][76], sawdust ash [77], waste rubber tire aggregate [78][79][80][81][82][83][84], and lightweight aggregates [85][86][87][88][89][90], as a substitution material of natural aggregate. ...
- Citing Article
July 2024
Construction and Building Materials
... At the same time, the particle size and shape of fine aggregates also influence the rheology and flow characteristics of SCGC [23]. Commonly, the finer particles improve the packing density and fill voids between coarse aggregates, enhancing the homogeneity and workability of the mix [24]. Fine aggregates contribute to the overall surface area available for geopolymerization reactions. ...
- Citing Article
February 2024
Construction and Building Materials
... It can be said that the impact of selfdesiccation to generate denser microstructure through secondary hydration is more reflexive at the w/b ratio of 0.15 compared to when it increases to 0.175 and 0.2 (Fig. 7). Previous studies also confirmed the dense microstructure of the UHPFRC mixtures through microstructural examinations, including SEM and EDS analyses (Chen et al., 2019;Dong et al., 2022;Zhao et al., 2023). The formation of pores is expected to be higher in the concrete with a higher w/b ratio, thereby lowering and increasing its resistivity and conductivity, respectively. ...
- Citing Article
October 2023
Journal of Cleaner Production