The Effect of freezing and Thawing cycles on the Durability Parameters of Lime- Cement Stabilized Clay Subgrade based on compressive strength results

Document Type : Original Research

Authors
S. F. faezi
S. R. sharifi
civil engineering, payame noor university
Abstract
Clay soils often cause problems in construction projects. In cold regions, freezing and thawing of clay soils can cause significant changes in the geotechnical characteristics of the soil. Frozen and thawed soils have shown changes in volume, strength, compressibility, frozen moisture content, bearing capacity and microstructural changes. In road construction projects in cold regions, freezing and melting is one of the factors affecting the unstability of soil engineering behavior, including the durability and performance of pavement and pavement layers. Therefore, the purpose of this research is to evaluate the effect of freezing and melting cycles on the parameters of the durability of calcareous stabilized clay bed based on compressive strength test results. 400 kg of soil samples were collected from the subgrade of the RAZ-PASIN rural road. In the first stage, granulation experiments, Atterberg and ... on 20 soil samples were performed. The second stage was the dry maximum dry matter and optimum moisture content of the soil-cement mixture. The third step was to determine the percentage of suitable cement for mixing, soil-cement mixed density with different percentages (6%, 8%, 10%, 12% and 14%) with limestone cement type 1 and type 2. In the fourth stage, 24 cylindrical specimens were added to the soil sample by adding (8%, 10%, 12%) of type 1 and type 2 calcareous cement and tested for compressive strength. In the fifth step, the indirect tensile strength and the stress-strain modulus of the mixed soil-cement were determined. The results indicated that the maximum dry matter density of the soil-cement mixture was obtained by adding 10% of type 1 and type 2 calcareous cement. The results also showed an increase in the compressive strength of the composite made with type 1 lime Portland cement compared to Type 2 lime Portland cement, and all specimens containing 8% calcareous cement additive exhibit more than 35 kg / cm2 after 7 days of resistance treatment. This means that samples made with Portland cement have a sufficient durability against atmospheric agents. If the use of calcareous Portland cement is used only for bed consolidation as a layer of pavement layers and the appropriate weight percentage of Portland Type II cement is selected to be 8% for the consolidation of the studied soil, the cost of the Rural Road Project will be compared. The Late Valley showed a 13% reduction in the cost of supplying calcareous Portland cement compared to Type II Portland cement (Table 10). This is due to a 15% reduction in energy costs (gas and electricity consumed) in the manufacture of calcareous Portland cement compared to Type II Portland cement. By comparing the results of compressive strength of soil-mixture of type 1 calcareous Portland cement and type 2 cement, it can be concluded that the effect of type 1 calcareous Portland cement in obtaining compressive strength is better than type 2 calcareous Portland cement due to increasing Lime is made of cement composition. This increased resistance is due to the ion exchange reaction and the agglomeration-compaction reaction between lime and soil and is achieved by lime contact with most fine-grained soils. Thus, the calcium ions in the lime are replaced by the lower-capacity positive ions in the soil. This results in the accumulation of calcium ions around the clay particles.

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[1] L, Jiankun, W, Tianliang, T, Yahu, Experimental study of the dynamic properties of cement- and lime-modified clay soils subjected to freeze-thaw cycles, Cold Regions Science and Technology, 61(1), (2016), 24-38
[2] A. Hotineanu, M. Bouasker, A. Aldaood, M. Al-Mukhtar, Effect of freeze–thaw cycling on the mechanical properties of lime-stabilized expansive clays, Cold Regions Science and Technology, 119, (2016), 151–157
[3] Y. Zhao, Sh. Wang, Q. Feng, Volume change behaviour and microstructure of stabilized loess under cyclic freeze-thaw conditions, Canadian Journal of Civil Engineering, 43(10), (2016), 865-874
[4] M. Roustaei, A. Eslami, M. Ghazavi, Effects of freeze–thaw cycles on a fiber reinforced fine grained soil in relation to geotechnical parameters, Cold Regions Science and Technology 120, (2016), 127-137
[5] R.Jahanshahi, M.Ghasemi, V.Tofigh, Evaluation of the effect of unsaturated conditions on the mechanical properties of hydrated limestone soils, Transport infrastructure engineering, 3(9), (2017)
[6] A.A. Firoozia, M.R Tahaa, A.A. Firoozia, T.A. Khana, The influence of freeze-thaw cycles on unconfined compressive strength of clay soils treated with lime, Jurnal Teknologi Sciences & Engineering, 76(1), (2015), 107-113
[7] N. Mahboubi Motlagh and A.R. Mahbubi Ardakani, The Effect of Lime Adding on Shear Resistance Parameters of Clay-Geosynthetic Soil, Earth Sciences, 24(108), (2018). 281-295
[8] A. SEZER, N. TANRINIAN, Y.E ADAMCIL, (2017), mechanical behavior of fly ash or cement amended sand-bentonite MIXTURES EXPOSED TO FREEZE-THAW ACTION, Applied Sciences and Engineering, 18 (5), (2018). 1008 - 1017
[9] Institute of Standards and Industrial Research of Iran, National Standard of Iran 4220, Portland cement-limestone-properties. (2005).
[10] M. Lotfi., Investigation of experimental results of adding limestone and pozzolan to Portland cement type 425-1, cement, No. 122 , (2008), pp. 26-29.
[11] M. Shojaei Baghini, A Ismail, Freeze-Thaw Performance and Moisture-Induced Damage Resistance of Base Course Stabilized with Slow Setting Bitumen Emulsion-Portland Cement Additives, Advances in Materials Science and Engineering, (2015), 10-23
[12] M.Younes Fard, M., M. Roshanzamir, M.Zomorodian, Investigation on the Effect of Lime on Marne Soil Resistance to Precipitation-Melting Cycles, First National Conference on Structural-Earthquake-Geotechnical, Babolsar, (2010) (in Persian).
[13] M. Jafari, Mechanical behavior and the effect of freezing and melting in lime and fiber-modified clay, Master's degree dissertation on soil and soil mechanics, Bu-Ali Sina University, (2010) (in Persian).
[14] M. Jamebozorg. The Effect of Nano Clay on the Rhode Soil Engineering Behavior in Cold and Melting Cycles, Master's Degree in Soil Mechanics and Pavement Engineering, Bu-Ali Sina University, (2011) (in Persian).
[15] H. MalekAvar Zamani, Effect of Ice and Melting Cycle on Shear Strength of Cement Stabilized Sand Soils, Master's Thesis for Soil Mechanics and Pathology, Imam Khomeini International University, (2012) (in Persian).
[16] M. Rustaee Hossein Abadi, The effect of freezing and melting cycles on the resistance of fine-grained soil with polypropylene fibers and geotextile layers, Master's thesis for soil mechanics, Khaje Nasir-Al-Din Toosi University of Technology, (2010) (in Persian).
[17] N. Golchin Far, N. Abbasi. Effect of melting and repeated freezing on mechanical properties of clay soils stabilized with lime and reinforced with polypropylene fibers, Amirkabir, 45(2), (2013), 1-12 (in Persian).
[18] M. Ola Pour, M. Mostar. A. Hussein. Investigation of the effect of freezing cycles on clay stabilized with cement and microsilica, Seventh National Congress of Civil Engineering, Zahedan University, (2010) (in Persian).
[19] H. Taherkhani. Investigation and comparison of compressive strength of clay soils stabilized with cement, lime and nano-polymer CBR PLUS, Omran Modares,16(4), (2016), 161-173 (in Persian).
[20] A. Kaman Bedast, R. Aghamjidi. Investigating the Effective Indicators on Increasing the Loadability of Soil Soils for Implementing Hydraulic Structures Using Soil-Cement Mixture, Water Engineering, (2018), 23-35 (in Persian).
[21] A. Shush Pasha, M. Abbasi, H. Najaf Nia, Study of the Effect of Cement and Nano Silica on the Shear Strength of Babolsar Soil, Amran Kabir, 50(1), (2018), 179-188 (in Persian).
[22] Hazirbaba,K. Gullu,H. California Bearing Ratio improvement and freeze–thaw performance of fine-grained soils treated with geofiber and synthetic fluid, Journal of Cold Regions Science and Technology, No 63, (2010), 50–60.
[23] Liu, J. Yahu Tian, T. Experimental study of the dynamic properties of cement- and lime-modified clay soils subjected to freeze–thaw cycles, Journal of Cold Regions Science and Technology, No 61, (2010), 29–33.
[24] Marwan, M., freeze-thaw performance of low-cement content stabilized soils for containment application, Dalhousie University Halifax, Nova Scotia(2015).
[25] T. Błaszczyński, M. Babiak, J. Kosno, S.Węglińskic, Freeze-Thaw Resistance and Increased Strength of Cohesive Soils Modified with a Cationic Surfactant, Journal of Procedia Engineering, 172, (2017), 111-118.
[26] J.James, S. Karthickeyan, S.Chidambaram, B.Dayanandan, K.Karthick, Effect of Curing Conditions and Freeze-Thaw Cycles on the Strength of an Expansive Soil Stabilized with a Combination of Lime, Jaggery, and Gallnut Powder. Journal of Advances in Civil Engineering 12(2), (2018).
[27] ASTM. Standard Test Methods for Compressive Strength of Molded Soil-Cement Cylinders. D 1633. (1996).
[28] ASTM. Standard Test Methods for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression. C469. (2014).
Modares Civil Engineering journal
Volume 20, Issue 2
May and June 2020
Pages 123-133