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John, Jino
- Evaluation of Temperature Stresses on Flyash Concrete Pavements
Abstract Views :395 |
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Authors
Affiliations
1 Sri Krishna College of Technology, IN
2 Government College of Technology, Coimbatore, Tamilnadu, IN
1 Sri Krishna College of Technology, IN
2 Government College of Technology, Coimbatore, Tamilnadu, IN
Source
International Journal of Applied Engineering Research, Vol 7, No 2 (2012), Pagination: 123-130Abstract
The study deals with the temperature stress distribution on concrete and fly ash concrete slabs by non linear (Quadratic Temperature Profile) method. Concrete and fly ash concrete slabs of size 1000mm x 1000mm x 150mm were cast. Cement was replaced by 10, 20, and 30 % of fly ash. M40 grade concrete was used for the study. Temperatures were measured at top, middle and bottom of the slab by using thermocouple for 7 days at every one interval from 6 am to 8pm after 28 days curing. The study shows that actual temperature distribution across the depth of slab was highly nonlinear. The temperature stresses were calculated by Quadratic Temperature Profile Method. Temperature stress gets reduced with increase in percentage of fly ash replacement.Keywords
Fly Ash Concrete, Concrete Pavement, Non Linear Temperature Distribution, Temperature Stress, Non Linear Temperature Stress, IRC 44References
- Pawan Kalla, Anurag Misra and Gauray Sancheti (2011), “Properties of Wollastonite and fly ash added concrete”, Indian Highway Journal, December (2011), pp.25-31
- IRC: SP: 62-2004, “Guidelines for the Design and Construction of Cement Concrete Pavement for Rural Roads”.
- Binod Kumar, V.K. Sood and Sunil Bose, (1992), “Effect of non linear temperature gradient on maximum temperature stresses in rigid pavements”, The Indian Concrete Journal (2004), pp. 19-24.
- Choubane, B., and Tia, M. (1992), “Nonlinear temperature gradient effect on maximum warping stresses in rigid pavement, “Transportation research record 1370, and pp. 11-19.
- Choubane, B., and Tia, M. (1995) “Analysis and verification of thermal gradient effects on concrete pavement”, Journal of Transportation Engineering, ASCE, Vol 121, No1, pp. 75-81.
- Mohamed, A.R., and Hansen, W. (1997), “Effect of nonlinear temperature gradient on curling stresses in concrete pavement”, Transportation research record.1568, pp. 65-71.
- Anastasios M. Ioannides. Lev Khazanovich (1998), “Non linear temperature effects on multilayered concrete pavements”, Journal of Transportation Engineering (1998).pp.128-136.
- IS: 8112-1989, “Specifications for 43 grade Portland cement”, Bureau of Indian Standards, New Delhi, India.
- IS: 383- 1970, “Specification for coarse and fine aggregate from natural sources for concrete”, Bureau of Indian Standards, New Delhi, India.
- IRC: 44-2008, “Guidelines for cement concrete mix design for pavements”, Indian road congress, New Delhi.
- IS 516-1959, 'Methods of Tests for Strength of Concrete', Bureau of Indian Standards, New Delhi, India.
- Jacobi E. Hiler, and Jeffery R.Roesler, Simplified Nonlinear Temperature Curling Analysis for Jointed Concrete Pavements, Journal of Transportation Engineering, ASCE, July 2010, pp 654-663.
- Recycled Concrete Aggregate - A Substitute to Natural Coarse Aggregate
Abstract Views :106 |
PDF Views:0
Authors
Jino John
1,
P. Parameswaran
2
Affiliations
1 Department of Civil Engineering, V.L.B. Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N., IN
2 Department of Civil Engineering, P.S.G College of Technology, Coimbatore, T.N., IN
1 Department of Civil Engineering, V.L.B. Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N., IN
2 Department of Civil Engineering, P.S.G College of Technology, Coimbatore, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 9, No 2 (2010), Pagination: 433-436Abstract
The study deals with the investigation undertaken to examine the possibility of using recycled concrete aggregate (RCA) as a substitute to natural coarse aggregate (NCA). The concrete specimens were cast by partially replacing cement by fly ash, and NCA was replaced by 30%of RCA. Twenty % replacement of cement by fly ash gave optimum results for compressive strength, split tensile strength and flexural strength.Keywords
Recycled Concrete, Aggregate, Fly Ash.- Replacement of River Sand Using Manufactured Sand and Quarry Dust in Cement Concrete
Abstract Views :154 |
PDF Views:1
Authors
Affiliations
1 Department of Chemistry, VLB Jankiammal College of Engineering and Technology, Coimbatore, IN
2 Department of Civil Engineering, Govt. College of Technology, Coimbatore, T.N., IN
1 Department of Chemistry, VLB Jankiammal College of Engineering and Technology, Coimbatore, IN
2 Department of Civil Engineering, Govt. College of Technology, Coimbatore, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 3 (2008), Pagination: 475-478Abstract
River sand is widely used for concrete as fine aggregate. The increased cost of river sand and depletion in ground water table due to illegal sand mining leads to find an alternative for fine aggregate without compromising the strength. In this study, concrete mix M30 has been designed using quarry dust and manufactured sand by replacing the river sand. Four mix proportions were made to test the effect of inclusion of quarry dust and manufactured sand in concrete and the results were compared with the control specimens. It was found that the strength of the concrete is enhanced in both the types of replacements.Keywords
Manufactured Sand, River Sand, Quarry Dust, Cement Concrete.- Fly Ash - A Substitute of Fine Aggregate in Concrete
Abstract Views :115 |
PDF Views:3
Authors
Affiliations
1 Department of Civil Engineering, VLB Janakiammal College of Engineering and Technology, Kovaipudur, Coimbatore-641 042, T.N., IN
2 Department of Chemistry, VLB Janakiammal College of Engineering and Technology, Kovaipudur, Coimbatore-641 042, T.N., IN
1 Department of Civil Engineering, VLB Janakiammal College of Engineering and Technology, Kovaipudur, Coimbatore-641 042, T.N., IN
2 Department of Chemistry, VLB Janakiammal College of Engineering and Technology, Kovaipudur, Coimbatore-641 042, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 2 (2008), Pagination: 327-329Abstract
The sharp fall in underground water table in river basins is said to be the outcome of indiscriminate sand mining resulting in the deepening of river beds. The natural sand beds have voids of 45-50% in the soil where the rain water is retained by the river sand. This property of the river sand is mainly responsible for maintaining the ground water table in and around river basins. This paper deals with the partial replacement of river sand by fly ash in aggregate in concrete without compromising the strength.- Reduction of Global Warming Gas Emissions from the Manufacture of Portland Cement Using High Volume Fly Ash Concrete
Abstract Views :117 |
PDF Views:0
Authors
Affiliations
1 Department of Chemistry, VLB Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N, IN
2 Department of Civil Engineering, VLB Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N, IN
1 Department of Chemistry, VLB Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N, IN
2 Department of Civil Engineering, VLB Janakiammal College of Engineering and Technology, Coimbatore-641 042, T.N, IN