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- W3198404578 abstract "In this investigation amelioration of the strength properties of subgrade soil found in Tawang, Arunachal Pradesh, India has been studied by adding cement as binding agent and chir pine needles (CPN) as reinforcing material. The cement percentages were varied as 2, 4 and 6% and proportions of CPN were varied as 0.5, 1, 1.5 and 2% of the dry weight of the soil. The standard proctor compaction test results show that optimum moisture content (OMC) decreases and maximum dry density (MDD) increases with the increase in cement percentage but decrease in both OMC and MDD was observed with increase CPN fibers. The California Bearing Ratio (CBR) test was performed on samples of soil mixtures under three categories namely unsoaked samples, soaked samples and samples after being subjected to 4 freeze–thaw cycles. For unsoaked and soaked conditions, an improvement in the strength was confirmed by an increase in CBR value for the test specimen containing soil, cement and CPN. However, reduction in the strength was observed after freeze–thaw cycles for all the soil mixtures. Further, to assess the strength behaviour of the frost-affected soil a series of Unconfined Compression Tests (UCS) was performed on cured samples with different soil mixtures and similar samples after subjecting them to 0, 3, 7, 14 and 28 freeze–thaw cycles. For cured samples, significant improvements in the strength were observed with the curing periods and increase in cement percentage and CPN contents. The optimum dosage of the blenders which give better performance was found to be S + 6%C + 1.5%CPN. The weakening effects of freeze–thaw cycles are confirmed by comparing the losses in strength with respect to the cured samples." @default.
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- W3198404578 date "2021-09-04" @default.
- W3198404578 modified "2023-09-27" @default.
- W3198404578 title "Influence of Freezing–Thawing Cycles on Strength Properties of Frost-Affected Subgrade Soil Stabilised with Cement and Reinforced with Chir Pine Needles" @default.
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- W3198404578 doi "https://doi.org/10.1007/978-3-030-80312-4_88" @default.
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