Mechanism of pore structure on carbonation properties of cement with high carbon fixation capacity
Source abstract
Abstract
The enhancement of carbon sequestration capacity and the improved sequestration efficiency of cement-based materials are regarded as a promising approach for carbon reduction. This study utilises calcium carbide slag as a calcium source to increase the carbon sequestration potential of cement. The effects of calcium carbide slag particle size on the pore structure of cement are examined, alongside the physical and microscopic properties of cement in hydration curing, carbonation curing and hydration-carbonation synergistic curing environments. The findings reveal that the reduction in calcium carbide slag particle size leads to the formation of nanopores within the cement matrix. These nanopores accelerate the hydration process, promoting greater CO 2 absorption into the pore solution and enhancing the cement’s carbon sequestration capability. Additionally, the refined particle size promotes the nucleation and growth of CaCO 3 crystals, thus improving the mechanical properties of the cement under cyclic curing conditions. As the particle size of Ca(OH) 2 decreases from 20.6 μm to 0.5 μm, the carbonation rate at various curing stages increases significantly. Following hydration-carbonation cyclic curing, the cement’s actual carbonation amount shows a maximum increase of 50.26 %, with a carbonation reaction degree of 95.14 %.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: CO2 Sequestration and Geologic Interactions · Concrete and Cement Materials Research · Zeolite Catalysis and Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Optical pH imaging reveals what phenolphthalein conceals -a carbonation study on blended cements10.1016/j.cemconres.2024.107681 ↗
2. The cement industry on the way to a low-carbon future10.1016/j.cemconres.2019.105792 ↗
3. Recent advances in microalgae-driven carbon capture, utilization, and storage: strain engineering through adaptive laboratory evolution and microbiome optimization10.1016/j.greenca.2024.10.001 ↗
4. Utilization and removal10.1038/s41586-019-1681-6 ↗
5. Recent advances and future perspectives in carbon capture, transportation, utilization, and storage (CCTUS) technologies: a comprehensive review10.1016/j.fuel.2023.128913 ↗
6. Fundamental understanding of carbonation curing and durability of carbonation-cured cement-based composites: a review
7. CO2 mineralization of cement-based materials by accelerated CO2 mineralization and its mineralization degree: a review10.1016/j.conbuildmat.2024.137712 ↗
8. An overview of current status of carbon dioxide capture and storage technologies10.1016/j.rser.2014.07.093 ↗
9. Recent advances in carbon dioxide utilization10.1016/j.rser.2020.109799 ↗
10. A review of mineral carbonation technologies to sequester CO210.1039/C4CS00035H ↗
11. Advances in CO2 utilization technology: a patent landscape review10.1016/j.jcou.2018.05.022 ↗
12. Significant aspects of carbon capture and storage - a review10.1016/j.petlm.2018.12.007 ↗
13. Utilising CO2 technologies for recycled aggregate concrete: a critical review - ScienceDirect
14. Effect of various parameters on carbonation treatment of recycled concrete aggregate using the design of experiment method10.1016/j.conbuildmat.2023.131339 ↗
15. On carbon dioxide utilization as a means to improve the sustainability of ready-mixed concrete10.1016/j.jclepro.2017.08.194 ↗
16. Properties and durability of concrete produced using CO2 as an accelerating admixture10.1016/j.cemconcomp.2016.10.007 ↗
17. An overview of current status of carbon dioxide capture and storage technologies10.1016/j.rser.2014.07.093 ↗
18. Effects of CO2 surface treatment on strength and permeability of one-day-aged cement mortar10.1016/j.conbuildmat.2017.07.216 ↗
19. Characterization of C-S-H formed in coupled CO2-water cured Portland cement pastes10.1617/s11527-018-1211-2 ↗
20. Rapid hardening β-C2S mineral and microstructure changes activated by accelerated carbonation curing10.1007/s10973-017-6165-z ↗
21. A review of accelerated carbonation technology in the treatment of cement-based materials and sequestration of CO210.1016/j.jhazmat.2004.04.019 ↗
22. Ex situ aqueous mineral carbonation
23. CO2 sequestration by magnesium silicate mineral carbonationl in Finland
24. Influence of nano-SiO2 and carbonation on the performance of natural hydraulic lime mortars10.1016/j.conbuildmat.2019.117411 ↗
25. The influence of nano-SiO2 on the carbonation properties of low calcium CO2 sequestration binder and its mechanism10.1016/j.conbuildmat.2024.135124 ↗
26. Durability of concrete coupled with life cycle assessment: Review and perspective10.1016/j.cemconcomp.2023.105041 ↗
27. Use of carbide slag from acetylene industry for activation of ground granulated blast-furnace slag10.1016/j.conbuildmat.2019.117713 ↗
28. Mechanism analysis of carbide slag capture of CO2 via a gas-liquid-solid three-phase fluidization system
29. Carbon dioxide cured building materials as an approach to decarbonizing the calcium carbide related industry10.1016/j.rser.2023.113688 ↗
30. An evaluation of the performance of hot mix asphalt containing calcium carbide residue as a filler10.1016/j.conbuildmat.2020.119918 ↗
31. Preparation and carbonation hardening of low calcium CO2 sequestration materials from waste concrete powder and calcium carbide slag10.1016/j.cemconcomp.2023.105151 ↗
32. CaO carbonation kinetics determined using micro-fluidized bed thermogravimetric analysis
33. Carbonation of lime-based materials under ambient conditions for direct air capture
34. CaO/Ca(OH)2 thermochemical heat storage of carbide slag from calcium looping cycles for CO2 capture10.1016/j.enconman.2018.08.021 ↗
35. Early age carbonation heat and products of tricalcium silicate paste subject to carbon dioxide curing10.3390/ma11050730 ↗
36. Toward performance improvement of supersulfated cement by nano silica: asynchronous regulation on the hydration kinetics of silicate and aluminate10.1016/j.cemconres.2023.107117 ↗
37. Mechanism of interaction between hydration–carbonation of C2S10.1016/j.conbuildmat.2024.134891 ↗
38. Effect of the hydration temperature on the microstructure of Class G cement: C–S–H composition and density10.1016/j.cemconres.2017.02.008 ↗
39. The use of thermal analysis in assessing the effect of temperature on a cement paste10.1016/j.cemconres.2004.06.015 ↗
40. Differential scanning calorimetry study of ordinary portland cement paste containing metakaolin and theoretical approach of metakaolin activity10.1016/S0958-9465(00)00090-1 ↗