Deltaic Lateritic Soil in 1:5:11 Mix Design for Producing Controlled Low-Strength Material (CLSM) for Pavement Backfill
Keywords:
Lateritic soil, Controlled low-strength material, Compressive strength, Water-cement ratio, Curing periods, Cement hydrationAbstract
Deltaic lateritic soil obtained from Emohua in Rivers State, Nigeria was studied to ascertain its suitability as a substitute to sand in concrete for producing controlled low-strength material (CLSM). Cement, coarse aggregate, as well as lateritic soil which replaced sand was combined in ratio 1:5:11 to produce lateritic concrete using varying water-cement (w/c) ratios at varying curing durations. Variation in the w/c ratios ranging from 0.2 to 0.5 at 0.1 intervals and the curing periods which varied between 7, 14 and 28 days were examined. As with the case with conventional concrete, strength development, as well as cement hydration took place after casting over the curing periods. Recent applications using CLSM recommends that a compressive strength of 8.3 N/mm2 or less is required for materials used as conventional compacted backfill soil or structural fillings. In a situation where future excavation is envisioned, it is recommended that the maximum long-term compressive strength of CLSM should generally have an upper limit of 2.1 N/mm2 for compacted backfill material hence, the lateritic concrete produced in this study using the 1:5:11 mix design at 0.2 w/c ratio, cured for 28 days which gave strength of 5.3 N/mm2 can be used as CLSM which primarily, can be utilized as a substitute for compacted backfill to sub-base and/or subgrade of flexible pavements. Where necessary, super plasticizer can be introduced to increase flowability of the lateritic concrete.
References
American Concrete Institute (ACI) 229R-94. (1994). Controlled Low-Strength Material (CLSM), 16 (7): 55-64.
American Concrete Institute (ACI) 301-20. (2020). Specifications for Concrete Construction. ISBN: 978-1-64195-107-4: 19-24.
Allam, M. M. and Sridharan, A. (1981). Effect of Repeated Wetting and Drying on Shear Strength. Journal of Geotechnical Engineering, ASCE, 107(4):421–438.
BS 1881-116 1983. Methods of Testing Concrete. Method for Determination of Compressive Strength of Concrete Cubes (AMD 6097) (AMD 6720).
BS Code 1377-2 (1990). Methods of Test for Soils for Civil Engineering Purposes-Part 2: Classification Tests.
BS Code 1924-2 (1990). Stabilized Materials for Civil Engineering Purposes. Part 1: General Requirements, Sampling, Sample Preparation and Tests on Materials before Stabilization.
Bello, A. A.; J. A. Ige, and H. Ayodele. (2015). Stabilization of Lateritic Soil with Cassava Peel Ash. British Journal of Applied Science and Technology. 7 (6): 642-650.
Brahmaji, K. N.; B. Ganesh; G. V. L. N. Murthy and K. Chandrika. (2017). An Experimental Analysis on usage Potential of Lateritic Soil as Part/Full Replacement for Fine Aggregates in Concrete. International Journal of Current Engineering and Scientific Research, 4 (2): 11-17.
Do, T. M. and Kim, Y. (2016). Engineering Properties of Controlled Low Strength Material (CLSM) Incorporating Red Mud. International Journal of Geo-Engineering, 7(7) https://doi.org/10.1186/s40703-016-0022-y.
Dockter B. (1998). Comparison of Dry Scrubber and Class C Fly Ash in CLSM Application. In: Proceedings the Design and Application of Controlled Low Strength Materials (Flowable Fill) (ASTM STP 1331). American Society for Testing and Materials, West Conshohocken, 13–26.
Gabr, M. A. and Bowders, J. J. (2002) Controlled Low-Strength Material using Fly Ash and AMD Sludge. J Hazard Mater 76 (2):251–263.
Gidigasu, M. D. (1976). Laterite Soil Engineering. Paedogenesis and Engineering Principles. Development in Geotechnical Engineering Amsterdam, Elsevier Scientific Publishing Company.
Howard, A. K., and Hitch, J. L. (1998). The Design and Application of Controlled Low-Strength Materials (Flowable Fill). ASTM, STP 1331, Special Technical Publication. West Conshohocken, PA.
Kennedy, C.; L. L. Prince and K. Okwulehie. (2018). Comparative on Strength Variance of Cement/Lime with Costus Afer Bagasse Fibre Ash Stabilized Lateritic Soil. Global Scientific Journals, 6 (5): 217-228.
Negi, A.S.; M. Faizan; D. P. Siddharth and R. Singh. (2013). Soil Stabilization using Lime. International Journal of Innovative Research in Science, Engineering and Technology. 2 (2): 448-453.
Neville, A. M. and Brooks, J. J. (2002). Concrete Technology, 2nd Edition, Longman Publishers, London.
Oke, J. A. and Olowoyo, M. K. (2019). Stabilization of Laterite Soil with Eggshell Powder and Sodium Silicate used as Fill Material in Road Construction. Arid Zone Journal of Engineering, Technology and Environment, 15 (3): 586-597.
Oke, J. A., and Osinubi, K. J. (2019). Oil Palm Empty Fruit Bunch Ash as a Sustainable Stabilizer for Laterite Sub-base of Highway Pavements. Paper presented at the International Conference on Sustainable Infrastructural Development (ICSID2019), Ota, Nigeria, 1-11.
Oke, J. A.; N. O. Obaji and K. J. Osinubi. (2020). Oil Palm Empty Fruit Bunch Ash Stabilized Laterite as Fill Material for Low-volume Pavement. Nigerian Journal of Technology, 39 (3): 721-731.
Oke, J. A. and Osinubi, K. J. (2020). Effects of Compactive Effort on Laterite - Oil Palm Empty Fruit Bunch Ash Mixture. Covenant Journal of Engineering Technology, 4 (1): 30-48.
Omotosho, P. O. and Akinmusuru, J. O. (1992). Behaviour of Soils (Lateritic) Subjected to Multi-Cyclic Compaction. Engineering Geology, 32 (1-2): 53–58
Osunade, J. A. (2002). Effect of Replacement of Lateritic Soils with Granite Fines on the Compressive and Tensile Strength of Laterized Concrete. Building and Environment, 37 (5): 491-496.
Robinson H. (1969). Morphology and Landscape. University Tutorial Press, Great Britain.
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