Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete
Supplementary Cementitious Materials (SCMs) have been utilised for decades to lower the OPC concrete's alkalinity. However, the usage of SCMs to lower the alkalinity of Vegetation Porous Concrete (VPC) is limited. The present study examined the effects of Fly Ash (FA) and Silica Fume (SF) on th...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423007238 |
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| author | Ganesh Prabhu Ganapathy Arjunan Alagu Samundeeswari Ramachandran Arul Sivanantham Panneerselvam George Gabriel Vimal Arokiaraj Mukesh Panneerselvam Balamurugan Panneerselvam Vivek Sivakumar Butsawan Bidorn |
| author_facet | Ganesh Prabhu Ganapathy Arjunan Alagu Samundeeswari Ramachandran Arul Sivanantham Panneerselvam George Gabriel Vimal Arokiaraj Mukesh Panneerselvam Balamurugan Panneerselvam Vivek Sivakumar Butsawan Bidorn |
| author_sort | Ganesh Prabhu Ganapathy |
| collection | DOAJ |
| description | Supplementary Cementitious Materials (SCMs) have been utilised for decades to lower the OPC concrete's alkalinity. However, the usage of SCMs to lower the alkalinity of Vegetation Porous Concrete (VPC) is limited. The present study examined the effects of Fly Ash (FA) and Silica Fume (SF) on the alkalinity, strength and planting properties of VPC. Since the Coarse Aggregate Size Ratio (CASR) has a substantial impact on the VPC strength, the current-study also examines the influence of CASR on the void content, strength and planting properties of VPC. The blending of cement with FA and SF reduced the alkalinity of the VPC, and that increasing the dose rate of FA and SF lowered the alkalinity of the VPC even more. The pozzolonic reaction of FA and SF in the VPC consumes CH crystals to form C–S–H gels, and the reduction in the quantity of CH crystals causes the pH of the VPC to decrease. Consequently, the plant's root length growth and LRWC improved by 7.91% and 4.95%, respectively. The inclusion of FA decreased the compressive strength due to the lower activity of the FA with the cement matrix; however, the accelerated pozzolanic reaction between Ca(OH)2 and SiO2 in the SF enhanced VPC strength. Despite an increase in CASR improves the aggregate interlocking property and the strength, it also reduces the void content of the VPC. The reduction in VPC pores hampered root mobility through the concrete, delaying root development and reducing the availability of water and nutrients. |
| first_indexed | 2024-03-13T04:09:09Z |
| format | Article |
| id | doaj.art-2c0e7bd399114905968a7880a9e78a66 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:09:09Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-2c0e7bd399114905968a7880a9e78a662023-06-21T06:56:30ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012453475360Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concreteGanesh Prabhu Ganapathy0Arjunan Alagu1Samundeeswari Ramachandran2Arul Sivanantham Panneerselvam3George Gabriel Vimal Arokiaraj4Mukesh Panneerselvam5Balamurugan Panneerselvam6Vivek Sivakumar7Butsawan Bidorn8Department of Civil Engineering, GMR Institute of Technology, Rajam, Andhra Pradesh, IndiaDepartment of Civil Engineering, E.G.S. Pillay Engineering College, Nagapattinam, Tamilnadu, India. 611002Department of Civil Engineering, University College of Engineering, Thirukkuvalai, Nagapattinam, Tamilnadu, IndiaDepartment of Engineering, Civil and Architectural Engineering Section, University of Technology and Applied Sciences, Muscat, OmanDepartment of Civil Engineering, University College of Engineering, Thirukkuvalai, Nagapattinam, Tamilnadu, IndiaDepartment of Civil Engineering, M Kumarasamy College of Engineering, Karur, Tamilnadu, IndiaDepartment of Community Medicine, Saveetha Medical College, SIMATS, Chennai, India; Corresponding author.Department of Civil Engineering, GMR Institute of Technology, Rajam, Andhra Pradesh, IndiaDepartment of Water Resources Engineering, Chulalongkorn University, Bangkok 10330, ThailandSupplementary Cementitious Materials (SCMs) have been utilised for decades to lower the OPC concrete's alkalinity. However, the usage of SCMs to lower the alkalinity of Vegetation Porous Concrete (VPC) is limited. The present study examined the effects of Fly Ash (FA) and Silica Fume (SF) on the alkalinity, strength and planting properties of VPC. Since the Coarse Aggregate Size Ratio (CASR) has a substantial impact on the VPC strength, the current-study also examines the influence of CASR on the void content, strength and planting properties of VPC. The blending of cement with FA and SF reduced the alkalinity of the VPC, and that increasing the dose rate of FA and SF lowered the alkalinity of the VPC even more. The pozzolonic reaction of FA and SF in the VPC consumes CH crystals to form C–S–H gels, and the reduction in the quantity of CH crystals causes the pH of the VPC to decrease. Consequently, the plant's root length growth and LRWC improved by 7.91% and 4.95%, respectively. The inclusion of FA decreased the compressive strength due to the lower activity of the FA with the cement matrix; however, the accelerated pozzolanic reaction between Ca(OH)2 and SiO2 in the SF enhanced VPC strength. Despite an increase in CASR improves the aggregate interlocking property and the strength, it also reduces the void content of the VPC. The reduction in VPC pores hampered root mobility through the concrete, delaying root development and reducing the availability of water and nutrients.http://www.sciencedirect.com/science/article/pii/S2238785423007238Vegetation porous concretePlanting concreteSustainable ecosystemCentral composite design |
| spellingShingle | Ganesh Prabhu Ganapathy Arjunan Alagu Samundeeswari Ramachandran Arul Sivanantham Panneerselvam George Gabriel Vimal Arokiaraj Mukesh Panneerselvam Balamurugan Panneerselvam Vivek Sivakumar Butsawan Bidorn Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete Journal of Materials Research and Technology Vegetation porous concrete Planting concrete Sustainable ecosystem Central composite design |
| title | Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete |
| title_full | Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete |
| title_fullStr | Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete |
| title_full_unstemmed | Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete |
| title_short | Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete |
| title_sort | effects of fly ash and silica fume on alkalinity strength and planting characteristics of vegetation porous concrete |
| topic | Vegetation porous concrete Planting concrete Sustainable ecosystem Central composite design |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423007238 |
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