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, Parveen
- Polyembryony in Oroxylum indicum Vent.
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Indian Forester, Vol 130, No 6 (2004), Pagination: 825-828Abstract
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- Polyembryony in Oroxylum indicum Vent.
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Indian Forester, Vol 130, No 7 (2004), Pagination: 825-828Abstract
No abstract- A Comparative Study of Stomata of Tissue Culture Raised Plants and Seedlings of Oroxylum indicum Vent
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Indian Forester, Vol 132, No 1 (2006), Pagination: 127-129Abstract
No abstract- Suitability of Ambient-Cured Alccofine added Low-Calcium Fly Ash-based Geopolymer Concrete
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Affiliations
1 I. K. Gujral Punjab Technical University, Kapurthala – 144603, Punjab, IN
2 Department of Civil Engineering, DCRUST Murthal, Sonipat – 131039, Haryana, IN
3 Department of Civil Engineering, NITTTR, Chandigarh-160036, Punjab, IN
1 I. K. Gujral Punjab Technical University, Kapurthala – 144603, Punjab, IN
2 Department of Civil Engineering, DCRUST Murthal, Sonipat – 131039, Haryana, IN
3 Department of Civil Engineering, NITTTR, Chandigarh-160036, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 10, No 12 (2017), Pagination:Abstract
Objective:To develop geopolymer concrete (GPC) using 100% industrial waste as a binder at ambient temperature. Methods/Analysis:The low calcium fly ash based GPC was prepared with different percentage (0%,5%, and 10%) of alccofine and fly ash content (350,370,400kg/m3), to examine the fresh and hardened properties of alccofine activated GPC like density, workability, water absorption, permeable voids, water permeability, compressive and split tensile strengths using international standards. Nine mixes were prepared and investigated by X-ray diffraction (XRD) and Scanning electron microscopy (SEM) for the determination of their phase, composition and microstructural properties. Findings: The result shows that alccofine enhances the mechanical properties and significantly reduces the transport properties of GPC. Furthermore, GPC specimens prepared with alccofine emerge to improve the densification process. The results of investigations conducted reveal that higher percentage of alccofine and fly ash content has a significant effect on the polymerisation of the GPC, which in turn improves the strength and microstructural features. A maximum compressive strength of 42 MPa is achieved with 10% alccofine without elevated heat curing. Novelty/Improvement:Alccofine plays a significant role in improving the mechanical and transport properties of low calcium fly ash based geopolymer concrete at ambient conditions providing as an alternative to heat cured GPC.Keywords
Concrete, Geopolymer, Microstructure,Permeability, Split Tensile Strength, Water Absorption.Full Text
- Behaviour of Fly Ash based Geopolymer Concrete in Fresh State
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1 CED, DCRUST, Murthal – 131039, Haryana, IN
1 CED, DCRUST, Murthal – 131039, Haryana, IN
Source
Indian Journal of Science and Technology, Vol 10, No 31 (2017), Pagination:Abstract
An attempt has been made in this study to investigate the properties of geopolymer concrete while in the fresh state. Fresh properties of geopolymer cement have been studied by varying concentration of sodium hydroxide (NaOH) having concentration 8M, 10M, and 14M. Further, the ratio of Na2SiO3 to NaOH was kept in the range of 1, 1.5 and 2.5. It has been found that standard consistency decreased significantly and initial and final setting times decreased as the salt concentration of the alkaline solution and of NaOH increased. The compressive strength of geopolymer cement increased with the increase in the concentration of NaOH and with the increase in the concentration of sodium hydroxide. The compressive strength was even higher than conventional concrete at the concentration of 14M.Keywords
Activator Solution, Compressive Strength, Fly Ash, GeopolymerFull Text
- Energy Requirement for the Sowing of Wheat After the In-situ Management of Paddy Residues
Abstract Views :456 |
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Authors
Affiliations
1 Department of Farm Machinery and Power Engineering, Punjab Agricultural University, Ludhiana (Punjab), IN
2 Krishi Vigyan Kendra, Bahowal, Hoshiarpur (Punjab), IN
1 Department of Farm Machinery and Power Engineering, Punjab Agricultural University, Ludhiana (Punjab), IN
2 Krishi Vigyan Kendra, Bahowal, Hoshiarpur (Punjab), IN
Source
International Journal of Agricultural Engineering, Vol 13, No 1 (2020), Pagination: 10-18Abstract
The present study assessed the energy requirement for the harvesting of paddy with combine harvesting with/without Super Straw Management System and wheat sowing with different farm machinery having straw retention and straw incorporated in the fields. The straw retention treatments i.e. T1and T2 whereas straw incorporation treatments i.e. T3 and T4 were taken in the study. The total energy consumption was maximum for treatment T4 (5529.92 MJ/ha), followed by treatment T3 (5487.47 MJ/ha), followed by treatment T2 (3485.15 MJ/ha) and treatment T1 (2539.40 MJ/ha). The least human energy consumption (22.01 MJ/ha), diesel energy (551.95 MJ/ha) and tractor and machinery energy (551.95 MJ/ha) was observed for treatment T1, while the maximum human energy, diesel energy, and tractor and machinery energy was observed in treatment T4 (52.17 MJ/ha), T3 (3442.63 and T4 (644.89 MJ/ha). The electrical energy (1401.78 MJ/ha) and submersible pump energy (13.68 MJ/ha) was observed in treatment T3 and T4, respectively. The residue retention practice of wheat sowing with Happy Seeder after paddy harvesting with combine harvester having Super Straw Management System is the efficient energy input to manage the paddy residue.Keywords
Energy, Straw Management, Wheat Sowing, Straw Retention, IncorporationReferences
- Anonymous (2018a). Package of practices for crops of Punjab, Kharif 2018, Punjab Agricultural University, Ludhiana, pp 1.
- Anonymous (2018b). Package of practices for crops of Punjab, Rabi 2018, Punjab Agricultural University, Ludhiana, pp 1.
- Garg, I.K. and Singh, S. (2004). Development and testing of Flail type chopper-cum-spreader for rice straw, Biannual Report of AICRP on FIM Deptt. Of FPM, PAU, Ludhiana: 14-15.
- Gill, M.S. (2012). Growth, challenges, and new initiatives. Souvenir of 7th National Conference on Krishi Vigyan Kendras-2012, Integrating Technologies and best practice. Punjab Agricultural University, Ludhiana: 19-21.
- Graham, J. P., Ellis, F. B., Cristian, D.G. and Cannel, R.Q. (1986). Effects of straw residues on the establishment, growth, and yield of autumn-sown cereals J. Agric. Engg. Res., 33 (1): 39-49.
- Kumar, P., Kumar, S. and Joshi, L. (2014). Alternative uses of crop stubble. Socioeconomic & Environmental Implications of Agricultural Residue Burning: 69-89.
- Sidhu, H.S., Blackwell, J., Bector, V., Shukla, L.N. and Singh, M. (2005). Development of combo happy seeder for direct drilling in a combine harvested paddy field. Proc, 39th Annual convention of ISAE held at ANGRAU, Hyderabad, India.
- Sidhu, H. S., Singh, M., Humphreys, E., Singh, Y. and Sidhu, S.S. (2007). The Happy Seeder enables direct drilling of wheat in rice stubble. Australia J. Exp. Agric., 47(7): 844-854.
- Singh, Y. (2012). Managing crop residues for sustainable agriculture in Punjab. J. Res. Punjab Agric. Univ., 49(3): 171-179.
- Singh, S. and Mittal, J.P. (1992). Energy in production agriculture, 1st ed. New Delhi: Mittal Publications. p. 166, [ISBN: 8170994071].
- Timsina, J. and Connor, D.J. (2001). Productivity and management of rice-wheat cropping systems; issues and challenges. Field Crops Res., 69 : 93-132.
- Verma, A., Singh, M. and Sidhu, H.S. (2009). Performance of combine mounted straw managing system during rice crop harvesting. J. Res. P.A.U., 46(1-2): 72-78.
- Morphological Characterization of Guava Cultivar's under Semi-arid Ecosystem of Haryana
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Authors
Affiliations
1 Department of Horticulture, College of Agriculture, CCS HAU, Hisar, Haryana, IN
2 Department of Mathematics & Statistics, College of Basic Science & Humanities, CCS HAU, Hisar, Haryana, IN
3 Department of Fruit Science, College of Horticulture. MHU, Karnal, Haryana, IN
1 Department of Horticulture, College of Agriculture, CCS HAU, Hisar, Haryana, IN
2 Department of Mathematics & Statistics, College of Basic Science & Humanities, CCS HAU, Hisar, Haryana, IN
3 Department of Fruit Science, College of Horticulture. MHU, Karnal, Haryana, IN