Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders
Various industrial waste binders (IWBs) are being recycled in soil stabilization to save cement consumption. However, the coupled effects brought out by combined IWBs on stabilized soils are still unclear. IWBs are categorized into two typical categories (IWB-A and IWB-B) referring to their chemical...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775524002361 |
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| author | Xing Wan Jianwen Ding Jianhua Wang Pengju Gao Xia Wei |
| author_facet | Xing Wan Jianwen Ding Jianhua Wang Pengju Gao Xia Wei |
| author_sort | Xing Wan |
| collection | DOAJ |
| description | Various industrial waste binders (IWBs) are being recycled in soil stabilization to save cement consumption. However, the coupled effects brought out by combined IWBs on stabilized soils are still unclear. IWBs are categorized into two typical categories (IWB-A and IWB-B) referring to their chemical role in this study. The alkali-source effect, pore-filling effect and cementation damage effect by IWBs in soil stabilization are explored. A series of mechanical and microscopic tests is performed on stabilized clay with different proportions of IWB-A and IWB-B. Moreover, initial water contents and cement contents of cement-stabilized clay are varied to examine the evolution of coupled effect with void ratio and cementation level. The results indicate that the alkali-source effect strengthens the cementation bonds and increases the early strength by 0.5–1.3 times, whereas the pore-filling effect improves the microfabric especially for the specimen with a large void ratio. The alkali-source effect increases soil cohesion cu at the pre-yield stage, and the pore-filling effect increases frictional angle φu at the post-yield stage. The cementation damage effect is remarkable at a low void ratio, which may result in many extruded pores among soil aggregates. The strength evolution with IWB proportions can be well stimulated by considering the coupled alkali-source effect, pore-filling effect and cementation damage effect. The optimal proportion of IWBs corresponds to an optimal combination of coupled effect. |
| format | Article |
| id | doaj-art-43eacd7fa0e746e181fa8f7f644e7c47 |
| institution | Kabale University |
| issn | 1674-7755 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj-art-43eacd7fa0e746e181fa8f7f644e7c472024-12-11T05:55:58ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552024-12-01161252095220Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste bindersXing Wan0Jianwen Ding1Jianhua Wang2Pengju Gao3Xia Wei4School of Transportation, Southeast University, Nanjing, 211189, China; School of Civil and Environmental Engineering, Nanyang Technological University, 639798, SingaporeSchool of Transportation, Southeast University, Nanjing, 211189, China; Corresponding author.School of Transportation, Southeast University, Nanjing, 211189, ChinaSchool of Transportation, Southeast University, Nanjing, 211189, ChinaSchool of Transportation, Southeast University, Nanjing, 211189, ChinaVarious industrial waste binders (IWBs) are being recycled in soil stabilization to save cement consumption. However, the coupled effects brought out by combined IWBs on stabilized soils are still unclear. IWBs are categorized into two typical categories (IWB-A and IWB-B) referring to their chemical role in this study. The alkali-source effect, pore-filling effect and cementation damage effect by IWBs in soil stabilization are explored. A series of mechanical and microscopic tests is performed on stabilized clay with different proportions of IWB-A and IWB-B. Moreover, initial water contents and cement contents of cement-stabilized clay are varied to examine the evolution of coupled effect with void ratio and cementation level. The results indicate that the alkali-source effect strengthens the cementation bonds and increases the early strength by 0.5–1.3 times, whereas the pore-filling effect improves the microfabric especially for the specimen with a large void ratio. The alkali-source effect increases soil cohesion cu at the pre-yield stage, and the pore-filling effect increases frictional angle φu at the post-yield stage. The cementation damage effect is remarkable at a low void ratio, which may result in many extruded pores among soil aggregates. The strength evolution with IWB proportions can be well stimulated by considering the coupled alkali-source effect, pore-filling effect and cementation damage effect. The optimal proportion of IWBs corresponds to an optimal combination of coupled effect.http://www.sciencedirect.com/science/article/pii/S1674775524002361Cement-stabilized clayIndustrial waste binder (IWB)Alkali-source effectPore-filling effectCementation damage effect |
| spellingShingle | Xing Wan Jianwen Ding Jianhua Wang Pengju Gao Xia Wei Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders Journal of Rock Mechanics and Geotechnical Engineering Cement-stabilized clay Industrial waste binder (IWB) Alkali-source effect Pore-filling effect Cementation damage effect |
| title | Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders |
| title_full | Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders |
| title_fullStr | Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders |
| title_full_unstemmed | Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders |
| title_short | Exploring alkali-source, pore-filling and cementation damage effects in cemented clay with typical industrial waste binders |
| title_sort | exploring alkali source pore filling and cementation damage effects in cemented clay with typical industrial waste binders |
| topic | Cement-stabilized clay Industrial waste binder (IWB) Alkali-source effect Pore-filling effect Cementation damage effect |
| url | http://www.sciencedirect.com/science/article/pii/S1674775524002361 |
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