Sulfate erosion resistance of slag-fly ash based geopolymer stabilized soft soil under semi-immersion condition
Source abstract
Abstract
In this paper, the sulfate resistance of slag-fly ash based geopolymer stabilized soft soil under semi-immersion condition was investigated. The slag/fly ash ratios were set as 10:0, 9:1, 8:2 and 7:3, respectively, while cement stabilized soft soil was used as the control group. The samples of geopolymer stabilized soil and cement stabilized soil were semi-immersed in 2.5% sodium sulfate (Na2SO4) solution for 3, 7, 28, 60 and 90 days. The appearance, unconfined compressive strength (UCS) and mass changes of the samples were tested to evaluate their sulfate erosion resistance. The effects of sulfate erode on the microstructure of the samples were analyzed by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). The results show that the geopolymer stabilized soil has better resistance to sulfate erosion than the cement stabilized soil. After the semi-immersing in Na2SO4 solution, the cement stabilized soil showed serious physical deterioration, while the geopolymer stabilized soil was relatively intact. With the increase of immersion age, the UCS of geopolymer stabilized soil gradually decreased, while the UCS of cement stabilized soil increased gradually and then decreased sharply until the bearing capacity was completely lost.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Microbial Applications in Construction Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (62)
Show source-provided references
1. Improving mechanical properties and shrinkage cracking characteristics of soft clay in deep soil mixing10.1016/j.conbuildmat.2021.125858 ↗
2. Application of construction waste in the reinforcement of soft soil foundation in coastal cities
3. Hydraulic conductivity of cement-stabilized marine clay with metakaolin and its correlation with pore size distribution10.1016/j.enggeo.2015.04.018 ↗
4. A new low carbon cementitious binder for stabilising weak ground conditions through deep soil mixing10.1016/j.sandf.2016.11.007 ↗
5. Mechanical characteristics and mechanism analysis of geopolymer cured soft clay
6. CO2 treatment of ground granulated blast furnace slag for enhancing geopolymer properties10.1016/j.jmrt.2022.01.161 ↗
7. Can Portland cement be replaced by low-carbon alternative materials? A study on the thermal properties and carbon emissions of innovative cements10.1016/j.jclepro.2018.02.138 ↗
8. Preparation and application of alkali-activated materials based on waste glass and coal gangue: a review10.1016/j.conbuildmat.2019.06.071 ↗
9. A review of waste products utilized as supplements to Portland cement in concrete10.1016/j.jclepro.2016.02.013 ↗
10. Assessing properties of alkali activated GGBS based self-compacting geopolymer concrete using nano-silica
11. Strength and durability properties of expansive soil treated with geopolymer and conventional stabilizers10.1016/j.conbuildmat.2022.127078 ↗
12. Deventer, Geopolymer technology: the current state of the art10.1007/s10853-006-0637-z ↗
13. Strength and microstructural study of recycled asphalt pavement: Slag geopolymer as a pavement base material10.1061/(ASCE)MT.1943-5533.0002393 ↗
14. Effects of curing environment on strength and microstructure of alkali-activated fly ash-slag binder10.1016/j.conbuildmat.2019.117481 ↗
15. Properties and performance of metakaolin pozzolanic cement pastes10.1007/s10973-017-6087-9 ↗
16. Geopolymers and geopolymeric materials10.1007/BF01904446 ↗
17. Deventer, The effect of ionic contaminants on the early-age properties of alkali-activated fly ash-based cements10.1016/S0008-8846(01)00724-4 ↗
18. Experimental feasibility study of geopolymer as the next-generation soil stabilizer10.1016/j.conbuildmat.2013.06.017 ↗
19. Compressibility and strength development of geopolymer stabilized columns cured under stress10.1016/j.sandf.2020.07.005 ↗
20. Chemical stability of cementitious materials based on metakaolin10.1016/S0008-8846(99)00074-5 ↗
21. Fire-resistant geopolymer produced by granulated blast furnace slag10.1016/S0892-6875(03)00008-6 ↗
22. A sludge and modified rice husk ash-based geopolymer: synthesis and characterization analysis10.1016/j.jclepro.2019.04.045 ↗
23. Strength and durability characteristics of GGBS geopolymer stabilized black cotton soil10.1016/j.matpr.2021.01.939 ↗
24. Physical, hydraulic, and mechanical properties of clayey soil stabilized by lightweight alkali-activated slag geopolymer10.1061/(ASCE)MT.1943-5533.0001743 ↗
25. Evaluating Shear strength of Sand-GGBFS based geopolymer composite material10.14311/AP.2019.59.0305 ↗
26. Evaluation of fly ash-and slag-based geopolymers for the improvement of a soft marine clay by deep soil mixing10.1016/j.sandf.2018.07.005 ↗
27. Multiscale study of sodium sulfate soaking durability of low plastic clay stabilized by reactive magnesia-activated ground granulated blast-furnace slag10.1061/(ASCE)MT.1943-5533.0001517 ↗
28. Durability of lightweight alkali-activated ground granulated blast furnace slag (GGBS) stabilized clayey soils subjected to sulfate attack10.1016/j.clay.2018.04.014 ↗
29. Deterioration mechanism of plain and blended cement mortars partially exposed to sulfate attack10.1016/j.conbuildmat.2017.08.017 ↗
30. Behaviour of cement binder exposed to semi-immersion in chloride-rich salt solutions and seawater with different RH levels10.1016/j.cemconcomp.2022.104606 ↗
31. Sulfate attack on concrete with mineral admixtures10.1016/0008-8846(95)00195-6 ↗
32. Durability of concrete is sulfate-rich soils, research and development bulletin
33. Effect of surface treatment on durability of concrete exposed to physical sulfate attack10.1016/j.conbuildmat.2014.10.006 ↗
34. Sulfate attack on concrete separating myths from reality
35. Geopolymer concrete: a review of some recent developments10.1016/j.conbuildmat.2015.03.036 ↗
36. Setting time, workability and strength properties of alkali activated fly Ash and slag based geopolymer concrete activated with high silica modulus water glass
37. Factors affecting the strength of alkali-activated slag10.1016/0008-8846(94)90026-4 ↗
38. Physicochemical and engineering behavior of cement treated clays10.1061/(ASCE)1090-0241(2004)130:7(696) ↗
39. Experimental Investigation of Unconfined Compression Strength and Microstructure Characteristics of Slag and Fly Ash-Based Geopolymer Stabilized Riverside Soft
40. Utilization of stainless-steel slag by cement hardening10.3208/sandf1972.33.3_118 ↗
41. Flexural strength and elastic modulus of ambient-cured blended low-calcium fly ash geopolymer concrete10.1016/j.conbuildmat.2016.11.034 ↗
42. K.L. Scrivener, Hydration products of alkali activated slag cement10.1016/0008-8846(95)00045-E ↗
43. Some factors affecting early hydration of alkali-slag cements10.1016/S0008-8846(96)85031-9 ↗
44. Experimental Study on compressive strength of Slag-Fly ash Base Polymer solidified silty clay
45. Strength and durability of granular soil stabilized with FA-GGBS Geopolymer10.1061/(ASCE)MT.1943-5533.0003736 ↗
46. Alkali-activated fly ashes: a cement for the future10.1016/S0008-8846(98)00243-9 ↗
47. External sulfate attack on alkali-activated fly ash-blast furnace slag composite10.1016/j.conbuildmat.2017.09.159 ↗
48. Microstructural changes in alkali activated fly ash/slag geopolymers with sulfate exposure10.1617/s11527-012-9906-2 ↗
49. Sulfate attack on cement-stabilized sand10.1061/(ASCE)1090-0241(1999)125:5(364) ↗
50. The long-term failure mechanisms of alkali-activated slag mortar exposed to wet-dry cycles of sodium sulphate10.1016/j.cemconcomp.2020.103893 ↗
51. Crystallization damage by sodium sulfate10.1016/S1296-2074(03)00022-0 ↗
52. Damage mechanisms of two-stage concrete exposed to chemical and physical sulfate attack10.1016/j.conbuildmat.2017.01.112 ↗
53. Durability of geopolymer materials in sodium and magnesium sulfate solutions10.1016/j.cemconres.2004.09.002 ↗
54. Deventer, Microstructural changes in alkali activated fly ash/slag geopolymers with sulfate exposure10.1617/s11527-012-9906-2 ↗
55. Mechanism of concrete deterioration due to salt crystallization10.1016/j.matchar.2004.08.013 ↗
56. Stress from crystallization of salt10.1016/j.cemconres.2003.12.034 ↗
57. Geo-mechanical behavior of clay soils stabilized at ambient temperature with fly-ash geopolymer-incorporated granulated slag10.1016/j.sandf.2019.08.005 ↗
58. Engineering properties and microstructural characteristics of cement-stabilized zinc-contaminated kaolin10.1139/cgj-2013-0177 ↗
59. Reaction mechanism of sulfate attack on alkali-activated slag/fly ash cements10.1016/j.conbuildmat.2021.126052 ↗
60. Mechanism of sulfate attack on alkali-activated slag: the role of activator composition10.1016/j.cemconres.2019.105868 ↗
61. Thermodynamic stability of sulfate ions on calcium aluminosilicate hydrate microstructure10.1007/s11595-019-2098-7 ↗
62. Microstructural and microanalytical studies of sulfate attack. V. Comparison of different slag blends10.1016/0008-8846(96)00090-7 ↗