Research and Application of Slag–Nanosilica Stabilizer for Silt Subgrade
Source abstract
Abstract
With the rapid development of construction and road engineering, the accumulation of silting waste soil is becoming more and more serious. In order to recycle the silt, a new type of stabilizer was developed in this study to improve its mechanical properties and applicability on roads. The optimal ratio of stabilizer components was determined by orthogonal test and grey correlation analysis. The effects of stabilizer on the macroscopic mechanical properties of silt were investigated by unconfined compressive strength (UCS) test and split test. The water stability test and freeze–thaw cycle test were carried out to study the durability and road performance of stabilized soil. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) methods were used to study the effect of the stabilizer on the microstructure and mechanism of silt. The results showed that the optimal mixture ratio of the new type of stabilizer was quicklime: nanosilica: slag = 32:3:65. Adding 10% stabilizer is a reasonable and effective method to strengthen silt, which has the characteristics of high strength and strong durability in the early period. The addition of stabilizer will result in hydration reaction, pozzolanic reaction, and cation exchange on the surface of soil particles with silt, which will enhance the intermolecular force of soil particles, reduce the porosity of soil, and strengthen the connection between soil particles.
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Research context
OpenAlex topics: Geotechnical Engineering and Soil Stabilization · Concrete and Cement Materials Research · Microbial Applications in Construction Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China
References (41)
Show source-provided references
1. Characteristics of Muddy Coastline of Zhejiang Province and Discussion on the Remediation
2. Resilient Modulus Characterization of Compacted Cohesive Subgrade Soil10.3390/app7040370 ↗
3. Combined mild soil washing and compost-assisted phytoremediation in treatment of silt loams contaminated with copper, nickel, and chromium10.1016/j.jhazmat.2011.03.113 ↗
4. The common treatment method of silt soil in the foundation of medium and small hydraulic structure
5. Strength properties of dredged silt at high water content treated with sodium silicate, soda residue and ground granulated blastfurnace slag
6. Utilization of a new soil stabilizer for silt subgrade10.1016/j.enggeo.2008.01.003 ↗
7. Fan, H.P. (2017). Study on the Stabilized Soil with Stabilizer as Road Base. [Ph.D. Thesis, Chang’an University]. (In Chinese).
8. Preparation and properties of high performance soil curing agent
9. Development status and prospect of soil curing agent
10. A Clay-Based Geopolymer in Loess Soil Stabilization10.3390/app10072608 ↗
11. Development of a Geomaterial from Dredged Bay Mud10.1061/(ASCE)0899-1561(2001)13:2(152) ↗
12. Characterization and Chemical Stabilization of Al-Qurayyah Sabkha Soil10.1061/(ASCE)0899-1561(2002)14:6(478) ↗
13. Test on alkali-activated ground granulated blast-furnace slag (GGBS) for Lianyungang soft soil stabilization
14. Carbon dioxide emission reduction potential analysis in cement production process
15. Improvement of Marine Clay Soil Using Lime and Alkaline Activation Stabilized with Inclusion of Treated Coir Fibre10.3390/app10062129 ↗
16. Pekan Soft Clay Treated with Hydrated Lime as a Method of Soil Stabilizer10.1016/j.proeng.2013.02.006 ↗
17. Ground granulated blast furnace slag amended fly ash as an expansive soil stabilizer10.1016/j.sandf.2016.02.004 ↗
18. Study on mechanical properties and structural characteristics of nano-SiO2 stabilized loess
19. Effect of nano-silica on chloride immobilization capacity of cement-fly ash system
20. Optimization of a straw ring-die briquetting process combined analytic hierarchy process and grey correlation analysis method10.1016/j.fuproc.2016.06.018 ↗
21. Optimizing the formulation of external-soil spray seeding with sludge using the orthogonal test method for slope ecological protection10.1016/j.ecoleng.2017.02.060 ↗
22. IHMCC (Institute of Highway of the Ministry of Communications, China) (2007). Test Methods of Soils for Highway Engineering (JTG E40-2007), People’s Communications Press. (In Chinese).
23. IHMCC (Institute of Highway of the Ministry of Communications, China) (2009). Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering (JTG E51-2009), People’s Communications Press. (In Chinese).
24. Peng, W., Wang, Q., Liu, Y.F., Sun, X.H., Chen, Y.T., and Han, M.X. (2019). The Influence of Freeze-Thaw Cycles on the Mechanical Properties and Parameters of the Duncan-Chang Constitutive Model of Remolded Saline Soil in Nong’an County, Jilin Province, Northeastern China. Appl. Sci., 9.10.3390/app9224941 ↗
25. Liu, H.B., Sun, S., Wang, L.X., Zhang, Y.L., Wang, J., Luo, G.B., and Han, L.L. (2020). Microscopic Mechanism of the Macroscopic Mechanical Properties of Cement Modified Subgrade Silty Soil Subjected to Freeze-Thaw Cycles. Appl. Sci., 10.10.3390/app10062182 ↗
26. Suppression of Sulfate Attack on a Stabilized Soil
27. Effect of compacting soil on changes in its strength
28. Experimental study of micro-structural mechanisms of waste residue of EPB stabilized by ZY-1 agent
29. Water resistance and compressibility of silt solidified with lime and fly-ash mixtures10.1007/s12665-021-09398-9 ↗
30. Microscopic Mechanism of Cement Improving the Strength of Lime-Fly Ash-Stabilized Yellow River Alluvial Silt10.1155/2020/9649280 ↗
31. Enhancing soft subgrade soil with a sewage sludge ash/cement mixture and nano-silicon dioxide10.1007/s12665-016-5432-9 ↗
32. Mechanical and Microscopic Properties of Cement Stabilized Silt10.1007/s12205-020-1671-0 ↗
33. Wang, Y., Zhang, H., and Zhang, Z. (2021). Experimental Study on Mechanics and Water Stability of High Liquid Limit Soil Stabilized by Compound Stabilizer: A Sustainable Construction Perspective. Sustainability, 13.10.3390/su13105681 ↗
34. Effect of freeze-thaw cycle on mechanical properties of solidified silt
35. An experimental study for influence of freeze-thaw cycles on strength and pore characteristics of solidified lead-contaminated soil
36. The influence of freeze-thaw cycles on the unconfined compressive strength of fiber-reinforced clay10.1016/j.coldregions.2009.12.005 ↗
37. Analysis of microstructure characteristics and stabilization mechanism of ionic soil stabilizer treated clay
38. Combined stabilization/solidification and electroosmosis treatments for dredged marine silt
39. Utilization of GGBS in stabilization of soft soils and its mechanism
40. Study of durability of reactive magnesia-activated ground granulated blast-furnace slag stabilized soil attacked by sulfate sodium solution
41. Solidification of additives for zinc-contaminated silt10.1177/1687814018789238 ↗