Microstructural characterization of ITZ in blended cement concretes and its relation to transport properties
Source abstract
Abstract
Abstract The improvements in the overall performances of concrete with blended materials were often ascribed to the modification of its hardened paste in general. In this paper, the effects of limestone filler (LF) and slag (GGBS) on chloride migration and water absorption of concretes with systematically varied aggregate properties were evaluated from the view point of ITZ by using BSE image, EDS, and MIP analysis. It was found that the incorporation of moderate amount of LF and GGBS would compact the microstructure of both ITZ and bulk cement matrix. The reduction in the pore volume (> 100 nm) contributes to the largest decrease in total porosity. Additionally, incorporating GGBS avoids the build-up of Ca(OH)2 within ITZ and provides a more uniform microstructure. The mechanism for the improvement in limiting water and ions penetration was found to be mainly related to the densification of bulk cement matrix rather than the modification of ITZ.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (62)
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1. The interfacial transition zone (ITZ) between cement paste and aggregate in concrete10.1023/B:INTS.0000042339.92990.4c ↗
2. Analytical formulas for interfacial transition zone properties10.1016/S1065-7355(97)90016-X ↗
3. Interfacial transition zone in concrete10.1016/1065-7355(95)90037-3 ↗
4. Modeling of the transition zone porosity10.1016/0008-8846(95)00064-J ↗
5. A study on characteristics of interfacial transition zone in concrete10.1016/j.cemconres.2003.11.019 ↗
6. Crumbie · 1994
7. Early age microstructure of the paste-aggregate interface and its evolution10.1557/JMR.1998.0268 ↗
8. Experimental and simulation studies of the interfacial zone in concrete10.1016/0008-8846(92)90113-A ↗
9. Assessing the ITZ microcracking via scanning electron microscope and its effect on the failure behavior of concrete10.1016/j.cemconres.2004.05.042 ↗
10. Influence of the micro- and nanoscale local mechanical properties of the interfacial transition zone on impact behavior of concrete made with different aggregates10.1016/j.cemconres.2011.11.015 ↗
11. Interfaces in cementitious composites
12. Calcium hydroxide deposition in the near interfacial zone in plain concrete10.1111/j.1151-2916.1994.tb06976.x ↗
13. Percolation and pore structure in mortars and concrete10.1016/0008-8846(94)90079-5 ↗
14. The interfacial zone and bond strength between aggregates and cement pastes incorporating high volumes of fly ash10.1016/S0958-9465(99)00013-X ↗
15. Properties of fly ash-modified cement mortar-aggregate interfaces10.1016/S0008-8846(99)00189-1 ↗
16. The effect of a polynaphthalene sulfonate superplasticizer on the contribution of the interfacial transition zone to the electrical resistivity of mortars containing silica and limestone fine aggregate10.1016/S0008-8846(00)00222-2 ↗
17. Effects of metakaolin, silica fume and slag on pore structure, interfacial transition zone and compressive strength of concrete10.1016/j.conbuildmat.2013.02.075 ↗
18. Modification of transition zone microstructure—silica fume coating of aggregate surfaces10.1016/0008-8846(92)90010-S ↗
19. 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 ↗
20. The role of silica fume in mortar—transition zone versus bulk paste modification10.1016/0008-8846(94)90089-2 ↗
21. Interfacial interactions in concretes with silica fume and SBR latex10.1016/j.conbuildmat.2008.03.005 ↗
22. Influence of silica fume on the interfacial bond between aggregate and matrix in near-surface layer of concrete10.1016/j.conbuildmat.2009.01.006 ↗
23. Utilization of silica fume in concrete: review of hardened properties10.1016/j.resconrec.2011.06.012 ↗
24. Relationship between microstructure and mechanical-properties of the paste-aggregate interface
25. Effects of metakaolin and the interfacial transition zone on the diffusion of chloride ions through cement mortars10.1016/S0008-8846(01)00598-1 ↗
26. Effects of metakaolin, water/binder ratio and interfacial transition zones on the microhardness of cement mortars10.1016/S0008-8846(02)00798-6 ↗
27. Increase of bond strength at interfacial transition zone by the use of fly ash10.1016/S0008-8846(99)00241-0 ↗
28. Particle size effect on the strength of rice husk ash blended gap-graded Portland cement concrete10.1016/j.cemconcomp.2004.05.002 ↗
29. Use of iron and steel industry by-product (GGBS) in cement paste and mortar10.1016/j.resconrec.2012.09.002 ↗
30. The relationship between autogenous shrinkage and pore structure of cement paste with mineral admixtures10.1016/j.conbuildmat.2010.04.018 ↗
31. Relationship between average pore diameter and chloride diffusivity in various concretes10.1016/j.conbuildmat.2005.02.005 ↗
32. Effect of self-desiccation on the pore structure of paste and mortar incorporating 70% GGBS10.1016/j.conbuildmat.2013.10.063 ↗
33. Influence of limestone and slag on the pore structure of cement paste based on mercury intrusion porosimetry and water vapour sorption measurements10.1016/j.conbuildmat.2013.11.022 ↗
34. Durability of mortar and concretes containing slag with low hydraulic activity10.1016/j.cemconcomp.2012.02.011 ↗
35. Investigation of the influence of blast-furnace slag on the resistance of concrete against organic acid or sulphate attack by means of accelerated degradation tests10.1016/j.cemconres.2011.09.009 ↗
36. High performance concrete containing lower slag amount: a complex view of mechanical and durability properties10.1016/j.conbuildmat.2008.11.018 ↗
37. Durability of ternary blend concrete with silica fume and blast-furnace slag: laboratory and outdoor exposure site studies
38. Strength development of ternary blended cement with limestone filler and blast-furnace slag10.1016/S0958-9465(01)00056-7 ↗
39. An experimental study on optimum usage of GGBS for the compressive strength of concrete10.1016/j.cemconcomp.2007.01.001 ↗
40. Improvement of the early-age reactivity of fly ash and blast furnace slag cementitious systems using limestone filler10.1617/s11527-010-9637-1 ↗
41. Strength optimization of “tailor-made cement” with limestone filler and blast furnace slag10.1016/j.cemconres.2004.09.023 ↗
42. Effects of nano- and micro-limestone addition on early-age properties of ultra-high-performance concrete10.1617/s11527-012-9940-0 ↗
43. Influence of limestone on the hydration of Portland cements10.1016/j.cemconres.2008.01.002 ↗
44. Hydration mechanisms of ternary Portland cements containing limestone powder and fly ash10.1016/j.cemconres.2010.11.014 ↗
45. Synergy between fly ash and limestone powder in ternary cements10.1016/j.cemconcomp.2010.09.006 ↗
46. Studies on the carboaluminate formation in limestone filler-blended cements10.1016/S0008-8846(01)00491-4 ↗
47. Nordtest method, concrete, mortar and cement-based repair materials: chloride migration coefficient from non-steady-state migration experiments
48. American Society for Testing and Materials · 2004 · 1585-13
49. Capillary transport in mortars and concrete10.1016/S0008-8846(97)00052-5 ↗
50. Porosity characterization of ITZ in cementitious composites: concentric expansion and overflow criterion10.1016/j.conbuildmat.2012.09.047 ↗
51. Determination of relevant parameters influencing gas permeability of mortars10.1016/j.conbuildmat.2010.09.028 ↗
52. Influence of mix proportions on microstructure and gas permeability of cement pastes and mortars10.1016/j.cemconres.2011.11.019 ↗
53. Effect of the percolated interfacial transition zone on the chloride migration coefficient of cement-based materials10.1016/j.matchemphys.2004.12.022 ↗
54. Influence of the interfacial transition zone and interconnection on chloride migration of Portland cement mortar
55. Water sorptivity of mortars and cconcretes—a review10.1680/macr.1989.41.147.51 ↗
56. Barrier performance of concrete—a review of fluid transport-theory10.1007/BF02473048 ↗
57. Effect of sample conditioning on the water absorption of concrete10.1016/j.cemconcomp.2011.05.007 ↗
58. ITZ microstructure of concrete containing GGBS10.1016/j.cemconres.2004.06.042 ↗
59. The hydration of slag, part 1: reaction models for alkali-activated slag10.1007/s10853-006-0873-2 ↗
60. A review of the work of the RILEM TC 159-ETC: engineering of the interfacial transition zone in cementitious composites10.1007/BF02484160 ↗
61. Effect of aggregates on drying shrinkage microcracking in cement-based composites10.1007/BF02483132 ↗
62. Influence of the interfacial transition zone and microcracking on the diffusivity, permeability and sorptivity of cement-based materials after drying10.1680/macr.2008.61.8.571 ↗