Effects of pretreatment methods on the properties of recycled aggregates and prepared concrete under CO2-curing
Source abstract
Abstract
In this study, the standard CO2-curing, CO2-curing with pre-saturated Ca(OH)2 immersion and CO2-curing with cement slurry pre-wrapping as enhancement methods for recycled aggregates (RAs) and prepared concrete were investigated. The fundamental properties of the cured RAs were measured. The effects of different treatment methods on the stress-strain curve, capillary water absorption property and chloride penetrability of the prepared concrete were explored. Moreover, the pore structure analysis, scanning electron microscope, X-ray diffraction and thermo-gravimetric analysis were conducted on the RAs and prepared concrete. The results indicated that (1) the qualities of the carbon treated RAs with different pretreatment methods were improved by the formation of CaCO3, which filled the pores and micro-cracks from the microstructural analysis. (2) The mechanical properties of the prepared concrete were enhanced with more brittle behavior. (3) The permeability, pore structure, microstructure and chloride resistance of the cured RAC improved significantly. (4) The CO2-curing with pre-saturated Ca(OH)2 immersion method recorded the highest enhancing efficiency due to the addition of calcium ion.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Recycled Aggregate Concrete Performance · Concrete and Cement Materials Research · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (63)
Show source-provided references
1. The utilization of active recycled powder from various construction wastes in preparing ductile fiber-reinforced cementitious composites: a case study
2. A comprehensive review on recycled aggregate and recycled aggregate concrete10.1016/j.resconrec.2021.105565 ↗
3. Structural engineering applications of recycled aggregate concrete: seismic performance, guidelines, projects and demonstrations
4. Effects of nano cotton stalk and palm leaf ashes on ultrahigh-performance concrete properties incorporating recycled concrete aggregates10.1016/j.conbuildmat.2021.124196 ↗
5. Influence of recycled aggregates and carbon nanofibres on properties of ultra-high-performance concrete under elevated temperatures
6. Effect and mechanism of surface-coating pozzalanics materials around aggregate on properties and ITZ microstructure of recycled aggregate concrete10.1016/j.conbuildmat.2009.10.038 ↗
7. Performance enhancement of recycled concrete aggregates through carbonation10.1061/(ASCE)MT.1943-5533.0001296 ↗
8. Design of structural concrete mixtures containing fine recycled concrete aggregate using packing model
9. Investigation of adhered mortar content on recycled aggregate using image analysis method10.1061/(ASCE)MT.1943-5533.0003864 ↗
10. Microwave-assisted beneficiation of recycled concrete aggregates10.1016/j.conbuildmat.2011.03.038 ↗
11. Performance of mortar prepared with recycled concrete aggregate enhanced by CO2 and pozzolan slurry10.1016/j.cemconcomp.2017.10.013 ↗
12. Fundamental behaviour of recycled aggregate concrete-overview I: strength and deformation10.1680/jmacr.21.00253 ↗
13. Effect of recycled aggregate treatment techniques on the durability of concrete: a comparative evaluation10.1016/j.conbuildmat.2020.120284 ↗
14. Performance enhancement of recycled concrete aggregate-A review10.1016/j.jclepro.2015.08.057 ↗
15. Critical review of recycled aggregate concrete properties, improvements, and numerical models10.1061/(ASCE)MT.1943-5533.0003394 ↗
16. Methods for improving the microstructure of recycled concrete aggregate: a review10.1016/j.conbuildmat.2020.118164 ↗
17. Methods for improving the durability of recycled aggregate concrete: a review10.1016/j.jmrt.2021.11.085 ↗
18. Methods to improve microstructural properties of recycled concrete aggregate: a critical review10.1016/j.conbuildmat.2020.121490 ↗
19. Fundamental behavior of recycled aggregate concrete-overview II: durability and enhancement
20. Carbonated recycled coarse aggregate and uniaxial compressive stress-strain relation of recycled aggregate concrete10.1016/j.conbuildmat.2018.08.159 ↗
21. Experimental study on CO2 curing for enhancement of recycled aggregate properties10.1016/j.conbuildmat.2013.09.008 ↗
22. Utilising CO2 technologies for recycled aggregate concrete: a critical review10.1016/j.conbuildmat.2020.118903 ↗
23. The FastCarb project: taking advantage of the accelerated carbonation of recycled concrete aggregates
24. An overview of utilizing CO2 for accelerated carbonation treatment in the concrete industry10.1016/j.jcou.2022.102000 ↗
25. Emerging CO2 utilization technologies for construction materials: a review10.1016/j.jcou.2022.102237 ↗
26. Engineering and transport properties of high-strength green concrete containing high volume of ultrafine palm oil fuel ash10.1016/j.conbuildmat.2011.12.007 ↗
27. Influence of steam curing regimes on the properties of ultrafine POFA-based high-strength green concrete
28. Performance of self-compacting concrete incorporating wastepaper sludge ash and pulverized fuel ash as partial substitutes
29. Effective utilization of textile industry waste-derived and heat-treated pumice powder in cement mortar10.1016/j.conbuildmat.2022.128966 ↗
30. Possibilities for the application of agro-industrial wastes in cementitious materials: A brief review of the Brazilian perspective
31. Performance of high‑strength green concrete under the influence of curing methods, volcanic pumice dust, and hot weather10.1007/s43452-022-00445-1 ↗
32. Accelerated carbonation technology for enhanced treatment of recycled concrete aggregates: a state-of-the-art review10.1016/j.conbuildmat.2021.122671 ↗
33. Use of a CO2 curing step to improve the properties of concrete prepared with recycled aggregates10.1016/j.cemconcomp.2013.09.008 ↗
34. Carbonated recycled coarse aggregate and uniaxial compressive stress-strain relation of recycled aggregate concrete10.1016/j.conbuildmat.2018.08.159 ↗
35. Effect of carbonated coarse recycled concrete aggregate on the properties and microstructure of recycled concrete10.1016/j.jclepro.2019.05.350 ↗
36. CO2-treatment of recycled concrete aggregates to improve mechanical and environmental properties for unbound applications
37. Carbonation behavior of recycled concrete with CO2-curing recycled aggregate under various environments10.1016/j.jcou.2020.101185 ↗
38. Durability of recycled aggregate concrete prepared with carbonated recycled concrete aggregates10.1016/j.cemconcomp.2017.09.015 ↗
39. Accelerated carbonation of recycled concrete aggregates: Investigation on the microstructure and transport properties at cement paste and mortar scales10.1016/j.jcou.2022.101885 ↗
40. The effects of carbonation conditions on the physical and microstructural properties of recycled concrete coarse aggregates10.1016/j.conbuildmat.2020.119486 ↗
41. Utilization of CO2 curing to enhance the properties of recycled aggregate and prepared concrete: a review10.1016/j.cemconcomp.2019.103446 ↗
42. Fundamental understanding of carbonation curing and durability of carbonation-cured cement-based composites: a review10.1016/j.jcou.2020.101428 ↗
43. Mineralization and utilization of CO2 in construction and demolition wastes recycling for building materials: a systematic review of recycled concrete aggregate and recycled hardened cement powder10.1016/j.seppur.2022.121512 ↗
44. Carbonation kinetics of a bed of recycled concrete aggregates: a laboratory study on model materials10.1016/j.cemconres.2013.01.005 ↗
45. Empirical modelling of CO2 uptake by recycled concrete aggregates under accelerated carbonation conditions10.1617/s11527-017-1066-y ↗
46. Effect of CO2 curing on demolition recycled fine aggregates enhanced by calcium hydroxide pre-soaking10.1016/j.conbuildmat.2017.07.079 ↗
47. Enhancing the accelerated carbonation of recycled concrete aggregates by using reclaimed wastewater from concrete batching plants10.1016/j.conbuildmat.2019.117810 ↗
48. A comparison of liquid-solid and gas-solid accelerated carbonation for enhancement of recycled concrete aggregate10.1016/j.cemconcomp.2021.103988 ↗
49. Enhancing the aggregate impact value and water absorption of demolition waste coarse aggregates with various treatment methods
50. Evaluating the synergic effect of waste rubber powder and recycled concrete aggregate on mechanical properties and durability of concrete
51. The effect of steam curing regimes on the chloride resistance and pore size of high-strength green concrete10.1016/j.conbuildmat.2021.122409 ↗
52. Chloride transport and induced steel corrosion in recycled aggregate concrete: a review10.1016/j.conbuildmat.2021.122547 ↗
53. Study on the penetration and diffusion of chloride ions in interface transition zone of recycled concrete prepared by modified recycled coarse aggregates
54. Chloride permeability and the caused steel corrosion in the concrete with carbonated recycled aggregate10.1016/j.conbuildmat.2019.05.136 ↗
55. GB/T25177-2017 · 2011
56. Modifying recycled aggregate concrete by aggregate surface treatment using sulphoaluminate cement and basalt powder10.1016/j.conbuildmat.2018.10.160 ↗
57. Concrete containing recycled aggregates: estimated lifetime using chloride migration test10.1016/j.conbuildmat.2019.06.136 ↗
58. GB/T 50082-2009 · 2009
59. GB14685-2011 · 2010
60. Carbonation of cement paste: understanding, challenges, and opportunities10.1016/j.conbuildmat.2016.04.138 ↗
61. Upcycling carbon dioxide to improve mechanical strength of Portland cement10.1016/j.jclepro.2018.06.120 ↗
62. Accelerated carbonation of Portland limestone cement10.1061/(ASCE)MT.1943-5533.0000773 ↗
63. Effects of imposed damage on the capillary water absorption of recycled aggregate concrete10.1155/2018/2890931 ↗