Related references
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(2023)
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Summary: This paper focuses on the utilization of waste glass powder in fire protective coatings based on magnesium phosphate cements (MPCs) for steel structures. The waste glass powder can substitute a main component of MPCs or be converted into lightweight aggregate. The study analyzes the mineralogical composition, microstructure, adhesion, and thermal behavior of the MPC coatings to explain their fire behavior and insulation properties. The coatings showed excellent adhesion and effectively reduced the substrate temperature during fire tests, with the thickness and presence of lightweight aggregates playing important roles in temperature reduction.
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(2023)
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Yibo Jing et al.
Summary: This study investigated the influence of steel slag powder (SSP) as a substitute for magnesium oxide (MgO) on the hydration behavior, mechanical properties, phase composition, and microstructure of magnesium phosphate cement (MPC). The results showed that SSP did not form new crystal phases, but the activated part participated in the hydration process and generated amorphous phases. The addition of SSP improved the compactness and mechanical properties of the MPC by filling pores, patching cracks, and connecting unreacted particles with struvite. This study contributes to a better understanding of the effects of SSP in MPC and provides a recycling alternative for SSP.
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Summary: In recent years, bone materials and cement innovation have made remarkable progress. Calcium phosphate cement (CPC) has the ability to regenerate body tissues and repair bone and dental defects. This study investigates the effects of various magnesium nanoparticles (NPs) percentages and sizes on reinforced cement thermal and mechanical behavior using molecular dynamics simulation.
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Yirong Leng et al.
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Jinrui Zhang et al.
Summary: The hydration behavior of MKPC was investigated through various material characterization methods and thermodynamic modeling. The results showed that K-struvite is the main hydration product of MKPC, and the structure became denser with the increase in curing age. Additionally, thermodynamic modeling was effective in analyzing the hydration behavior of MKPC.
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Lanh Si Ho et al.
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JOURNAL OF CLEANER PRODUCTION
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Kailong Lu et al.
Summary: The study shows that adding mineral admixtures can effectively improve the performance of high fluidity MAPC paste without decreasing fluidity. Metakaolin improves the strength of MAPC paste better than fly ash, forming more highly reinforced microstructures and denser interfaces.
JOURNAL OF BUILDING ENGINEERING
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Jinrui Zhang et al.
Summary: This study investigates the effects of various factors on the compressive strength of calcined sludge-cement composites and establishes prediction models using machine learning. The results show that curing age has the greatest impact on compressive strength, while the influence of ball milling time and CaSO4 is small.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
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M. Aminul Haque et al.
Summary: By incorporating fly ash and silica fume, the water resistance performance of magnesium phosphate cement can be improved, resulting in a compact microstructure. Adding 5% silica fume under ideal conditions can increase the compressive and flexural strength of mortar samples by about 25%. However, the strength will decrease to some extent in the water system.
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(2022)
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Wenjuan Liu et al.
Summary: This study developed a composite bone cement with high compressive strength and desirable bioactivity by incorporating calcium silicate bioceramic into magnesium phosphate bone cement. The composite bone cement showed significantly higher compressive strength compared to traditional bone cements and demonstrated apatite mineralization ability and moderate degradation behavior.
COMPOSITES PART B-ENGINEERING
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Xiangguo Li et al.
Summary: Magnesium-based cement is a promising green cementitious material, but it faces issues with delayed early compressive strength growth and significant shrinkage. This study found that adding superabsorbent polymer (SAP) into magnesium silicate hydrate cement (MSHC) as an internal curing condition can dramatically enhance early age compressive strength and alleviate autogenous shrinkage.
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