Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate
The long-term properties of solidified soft soil, including an immersion test, the dry–wet cycle and the freeze–thaw cycle, were systematically studied. Firstly, the immersion stability of solidified soft soil was confirmed. The appearance of soft soil solidified by a solidified agent and raw fine a...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/6/2447 |
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| author | Anhui Wang Wanying Dong Qiwei Zhan Juanlan Zhou |
| author_facet | Anhui Wang Wanying Dong Qiwei Zhan Juanlan Zhou |
| author_sort | Anhui Wang |
| collection | DOAJ |
| description | The long-term properties of solidified soft soil, including an immersion test, the dry–wet cycle and the freeze–thaw cycle, were systematically studied. Firstly, the immersion stability of solidified soft soil was confirmed. The appearance of soft soil solidified by a solidified agent and raw fine aggregate did not change significantly, and it was still intact without damage when the soaking time increased up to 28 d. Secondly, the mass and compressive strength loss of solidified soft soil were determined. When the number of dry–wet cycles was one, three, five and seven, the accumulated-mass loss rate was 1.4%, 3.0%, 4.5% and 6.0%, respectively, and the compressive-strength loss rate was −10.3%, 13.9%, 41.2% and 53.6%, respectively. Compared with solidified soft soil under standard curing environments, solidified soft soil after seven dry–wet cycles showed small cracks, and the structural compactness began to decline. Finally, the influence of the freeze–thaw cycle on the mass, compressive strength and microstructure of solidified soft soil was confirmed. When the number of freeze–thaw cycles was 5, 10, 15 and 20, the accumulated-mass loss rate was 12.6%, 16.7%, 17.9% and 18.8%, respectively. The microstructure of the solidified soft soil was damaged, and the increase in porosity was the main reason for its strength reduction or even failure. Nevertheless, soft soil with a solidified agent and recycled fine aggregate had no obvious damage to the microstructure, and the freeze–thaw resistance was relatively superior. |
| first_indexed | 2024-03-11T06:14:36Z |
| format | Article |
| id | doaj.art-11b495e20efe4260ad9d6eb4dcd3205d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T06:14:36Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-11b495e20efe4260ad9d6eb4dcd3205d2023-11-17T12:22:25ZengMDPI AGMaterials1996-19442023-03-01166244710.3390/ma16062447Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine AggregateAnhui Wang0Wanying Dong1Qiwei Zhan2Juanlan Zhou3China Construction Industrial & Energy Engineering Group Co., Ltd., Nanjing 210046, ChinaSchool of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaThe long-term properties of solidified soft soil, including an immersion test, the dry–wet cycle and the freeze–thaw cycle, were systematically studied. Firstly, the immersion stability of solidified soft soil was confirmed. The appearance of soft soil solidified by a solidified agent and raw fine aggregate did not change significantly, and it was still intact without damage when the soaking time increased up to 28 d. Secondly, the mass and compressive strength loss of solidified soft soil were determined. When the number of dry–wet cycles was one, three, five and seven, the accumulated-mass loss rate was 1.4%, 3.0%, 4.5% and 6.0%, respectively, and the compressive-strength loss rate was −10.3%, 13.9%, 41.2% and 53.6%, respectively. Compared with solidified soft soil under standard curing environments, solidified soft soil after seven dry–wet cycles showed small cracks, and the structural compactness began to decline. Finally, the influence of the freeze–thaw cycle on the mass, compressive strength and microstructure of solidified soft soil was confirmed. When the number of freeze–thaw cycles was 5, 10, 15 and 20, the accumulated-mass loss rate was 12.6%, 16.7%, 17.9% and 18.8%, respectively. The microstructure of the solidified soft soil was damaged, and the increase in porosity was the main reason for its strength reduction or even failure. Nevertheless, soft soil with a solidified agent and recycled fine aggregate had no obvious damage to the microstructure, and the freeze–thaw resistance was relatively superior.https://www.mdpi.com/1996-1944/16/6/2447long-term propertyindustrial waste residuerecycled fine aggregatesoft soil |
| spellingShingle | Anhui Wang Wanying Dong Qiwei Zhan Juanlan Zhou Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate Materials long-term property industrial waste residue recycled fine aggregate soft soil |
| title | Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate |
| title_full | Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate |
| title_fullStr | Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate |
| title_full_unstemmed | Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate |
| title_short | Study on Long Term Property of Soft Soil Solidified with Industrial Waste Residue and Regenerated Fine Aggregate |
| title_sort | study on long term property of soft soil solidified with industrial waste residue and regenerated fine aggregate |
| topic | long-term property industrial waste residue recycled fine aggregate soft soil |
| url | https://www.mdpi.com/1996-1944/16/6/2447 |
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