Mechanical and Self-Healing Performance of Yellow River Alluvial Silt Treated with Composite Flexible Curing Agent
Source abstract
Abstract
The silt in the Yellow River alluvial plain has low clay content, low cohesion and poor structure. Its stability has always been a difficult problem in the engineering field. In order to improve the engineering properties of the silt in the alluvial plain of the Yellow River, a new type of silt composite flexible curing agent was prepared by using sintered red mud and matrix asphalt as the main materials to comprehensively stabilize the silt. The aim of this study was to investigate the effects of sintered red mud-asphalt composite flexible curing agent on aged mechanical properties of treated silt, in which the replacement levels of the flexible curing agent below 10% by weight are compared. Apart from the compressive strength, the drying shrinkage, low temperature freeze-thaw and high temperature self-healing ability are measured. The test results show that the flexible curing agent has a positive effect on improving the mechanical properties of stabilized silt. The flexible curing agent series exhibit higher compressive strength, better water stability, resistance to freeze-thaw and high temperature self-healing ability, and lower drying shrinkage compared to silt and cement stabilized silt. The preferred dosage 4%~6% of the flexible curing agent is obtained by mechanical property analysis. The SEM images show that the incorporation of the flexible curing agent helps the silt form dense cementation and non-connected microporous structure, that is beneficial to the improvement of water stability and frost resistance. The asphalt component in the flexible curing agent can reorganize and diffuse in the soil, fill the internal pores and micro cracks, and realize the repair of soil damage and structural reinforcement.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Microbial Applications in Construction Materials · Geotechnical Engineering and Soil Stabilization · Grouting, Rheology, and Soil Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shandong Hi-Speed Company Limited, Jinan 250014, China
Shandong Transportation Institute, Jinan 250102, China
School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, China
Qingdao Highway & Bridge Group Co., Ltd., Qingdao 266033, China
Funding
National Key R&D Program of China · National Natural Science Foundation of China · Shandong Provincial Natural Science and Foundation · Shandong Provincial Key Research and Development Program
References (47)
Show source-provided references
1. Zhanyong, Y. (2006). Engineering Properties on Yellow River Alluvial-Plain Soil. [Ph.D. Thesis, Tianjin University].
2. Test study of changing rules of excess pore water pressure during dynamic consolidation at subgrade of expressway in Yellow River flood area
3. Study on fundamental characteristics and construction techniques of silty soil subgrade in Yellow River flood field
4. Study on the dynamic characteristics of silt impact rolling in the yellow area
5. Study of plate loading test of silt foundation in alluvial plains of Yellow River
6. Increasing and dissipation regularity of the pore water pressure under the dynamic compaction action to the alluvial and diluvium soil of Yellow River
7. Hydrophilic characteristics and strength decay of silt roadbed in Yellow River alluvial plain
8. A comparative evaluation of various additives used in the stabilization of expansive soils10.1520/GTJ11363J ↗
9. Improvement of Mechanical Properties of Ferrum Lime Stabilized Soil with the Addition of Aluminum Sludge10.2472/jsms.50.3Appendix_47 ↗
10. Ning, B. (2020). Permeability and Mechanical Behaviors of Stabilized Silt by Inorganic Soil Stabilizer. [Ph.D. Thesis, Zhengzhou University].
11. Evaluation of Chemical Modifiers and Stabilizers for Chemically Active soils-Clays10.3141/1757-05 ↗
12. Geo-characterisation of lime water treatment sludge10.1680/jenge.15.00028 ↗
13. An assessment of cement-PFA and lime-PFA used to stabilize clay-size materials
14. Effect of fly ash on engineering properties of expansive soils10.1061/(ASCE)1090-0241(2004)130:7(764) ↗
15. Use of cement and quicklime to accelerate ripening and immobilize contaminated dredging sludge10.1016/j.jhazmat.2006.10.074 ↗
16. Harding Mechanism of cement-stabilized soil
17. Strength development in soft marine clay stabilized by fly ash and calcium carbide residue based geopolymer10.1016/j.clay.2016.04.005 ↗
18. Test and study of ISS soil stabilizing agent used for the road base
19. Study on ISS of Improving the Capability of Soil Based on Tests in Laboratory
20. Microstructure and strength feature of ISS stabilized soil10.1002/cjoc.201180466 ↗
21. Rauch, A.F., Katz, L.E., and Liljestrand, H.M. (2003). Analysis of the Mechanisms and Efficacy of Three Liquid Chemical Soil Stabilizers, Center for Transportation Research, The University of Texas at Austin.
22. Magnesium hydroxide, seawater and olive mill wastewater to reduce swelling potential and plasticity of bentonite soil10.1016/j.conbuildmat.2013.03.053 ↗
23. Strength characteristics and solidification mechanism of sulphate salty soil solidified with sodium silicate
24. Pore diameter distribution test of red clay treated with Iss
25. Experimental study of the surface reactions between clay minerals and water-glass
26. Strength properties of dredged silt at high water content treated with sodium silicate, soda residue and group granulated blastfurnace slag
27. Effects of chemical stabilizers on an expansive clay10.1007/s12205-013-1014-5 ↗
28. Mechanisms of soil stabilization with liquid ionicstabilizer10.3141/1757-06 ↗
29. Enzyme stabilization of high liquid limit clay
30. Influence of key environmental conditions on microbially induced cementation for soil stabilization
31. Investigation on the enhancing and acting mechanism of PERMA-ZYME on densification and strength of soil
32. Relation of soil granule fineness fractal dimension and unconfined compression strength of soil stabilized by pema-zyme
33. Experimental study on treating the silt foundation of sea dike in Wenzhou peninsula construction project
34. Experimantal research on stabilized soft soils by alumina bearing modifier
35. Characteristics of soil stabilized by HAS stabilizer and ITS engineering use
36. Strength Characteristics of Lightweight Soil Amended by Cement-Modified Poly (vinyl alcohol)
37. Liu, C. (2015). Study on Mechanism and Performance of the Coastal Saline Soil Cured by Slag Composite Curing Agent. [Ph.D. Thesis, University of Science and Technology Beijing].
38. Ma, S., Sun, Z., Wei, J., Zhang, X., and Zhang, L. (2022). Utilization of Modified Red Mud Waste from the Bayer Process as Subgrade and Its Performance Assessment in a Large-Sale Application. Coatings, 12.10.3390/coatings12040471 ↗
39. Sun, Z. (2017). Research on the Engineering Technology and Environmental Impact of Bayer Red Mud Filling Subgrade. [Ph.D. Thesis, Shandong University].
40. Review of self-healing capacity of asphalt
41. Wang, L. (2009). Evaluation Methodology of Temperature Susceptibility for Paving Asphalt. [Ph.D. Thesis, China University of Petroleum].
42. Sun, Y. (2017). Research on Self-Healing Properties of Asphalt and Asphalt Mixtures. [Ph.D. Thesis, Wuhan University of Technology].
43. (2021). Test Methods of Soils for Highway Engineering, China Communication Press Co., Ltd.. JTG 3430-2021.
44. (2009). Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering, China Communication Press Co., Ltd.. JTG E51-2009.
45. Strength and deformation characteristics of silt modified with slaked lime or cement
46. Strength and Water Stability of Compound Stabilized Silt with Emulsified Asphalt
47. Composite Stabilization of Silty Soil near the Yellow River: Two Methods and Performance Comparison