Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing
There are many studies related to using alkali activated binders for the improvement of clayey soil mechanical properties. In this study, alkali activated slag (AAS) for the improvement of clayey soil strength was used and it reinforced the clay. This paper presents results of an investigation on th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/12/1076 |
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| author | Darius Žurinskas Danutė Vaičiukynienė Gediminas Stelmokaitis Viktoras Doroševas |
| author_facet | Darius Žurinskas Danutė Vaičiukynienė Gediminas Stelmokaitis Viktoras Doroševas |
| author_sort | Darius Žurinskas |
| collection | DOAJ |
| description | There are many studies related to using alkali activated binders for the improvement of clayey soil mechanical properties. In this study, alkali activated slag (AAS) for the improvement of clayey soil strength was used and it reinforced the clay. This paper presents results of an investigation on the utilization of ground-granulated blast-furnace slag in the reinforcement of clay soils. Therefore, significant cost savings could be achieved by using alkali activated slag as binding material. These samples were analyzed by X-Ray fluorescence analysis (XRF), X-Ray diffraction (XRD), scanning electron microscopy (SEM) and strength tests after the curing. The clay samples reinforced with AAS showed higher shear stress, cohesion and internal friction angle compared with the samples without reinforcement. The highest shear strength was achieved by using the highest amount of AAS (30%). This shear stress of the unreinforced clay samples could be increased from 63.2 to 137.4 kPa (117.4%) and from 123.2 to 257.4 kPa (108.9%) when the normal stress value of 100 and 500 kPa was used, respectively. The increase in shear strength is closely related to the compact contact zone between AAS and clay. Moreover, the new formed cementitious compounds of AAS had a positive influence on the shear strength of samples as well. |
| first_indexed | 2024-03-10T14:24:55Z |
| format | Article |
| id | doaj.art-0f86b549e4e24c7f969e89175f46410c |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T14:24:55Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-0f86b549e4e24c7f969e89175f46410c2023-11-20T23:00:49ZengMDPI AGMinerals2075-163X2020-11-011012107610.3390/min10121076Clayey Soil Strength Improvement by Using Alkali Activated Slag ReinforcingDarius Žurinskas0Danutė Vaičiukynienė1Gediminas Stelmokaitis2Viktoras Doroševas3Faculty of Civil Engineering and Architecture, Kaunas University of Technology, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, LT-51367 Kaunas, LithuaniaFaculty of Civil Engineering and Architecture, Kaunas University of Technology, LT-51367 Kaunas, LithuaniaThere are many studies related to using alkali activated binders for the improvement of clayey soil mechanical properties. In this study, alkali activated slag (AAS) for the improvement of clayey soil strength was used and it reinforced the clay. This paper presents results of an investigation on the utilization of ground-granulated blast-furnace slag in the reinforcement of clay soils. Therefore, significant cost savings could be achieved by using alkali activated slag as binding material. These samples were analyzed by X-Ray fluorescence analysis (XRF), X-Ray diffraction (XRD), scanning electron microscopy (SEM) and strength tests after the curing. The clay samples reinforced with AAS showed higher shear stress, cohesion and internal friction angle compared with the samples without reinforcement. The highest shear strength was achieved by using the highest amount of AAS (30%). This shear stress of the unreinforced clay samples could be increased from 63.2 to 137.4 kPa (117.4%) and from 123.2 to 257.4 kPa (108.9%) when the normal stress value of 100 and 500 kPa was used, respectively. The increase in shear strength is closely related to the compact contact zone between AAS and clay. Moreover, the new formed cementitious compounds of AAS had a positive influence on the shear strength of samples as well.https://www.mdpi.com/2075-163X/10/12/1076alkali activated slagclayey soil improvementreinforcementshear strength |
| spellingShingle | Darius Žurinskas Danutė Vaičiukynienė Gediminas Stelmokaitis Viktoras Doroševas Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing Minerals alkali activated slag clayey soil improvement reinforcement shear strength |
| title | Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing |
| title_full | Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing |
| title_fullStr | Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing |
| title_full_unstemmed | Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing |
| title_short | Clayey Soil Strength Improvement by Using Alkali Activated Slag Reinforcing |
| title_sort | clayey soil strength improvement by using alkali activated slag reinforcing |
| topic | alkali activated slag clayey soil improvement reinforcement shear strength |
| url | https://www.mdpi.com/2075-163X/10/12/1076 |
| work_keys_str_mv | AT dariuszurinskas clayeysoilstrengthimprovementbyusingalkaliactivatedslagreinforcing AT danutevaiciukyniene clayeysoilstrengthimprovementbyusingalkaliactivatedslagreinforcing AT gediminasstelmokaitis clayeysoilstrengthimprovementbyusingalkaliactivatedslagreinforcing AT viktorasdorosevas clayeysoilstrengthimprovementbyusingalkaliactivatedslagreinforcing |