Assessing the Potential of a Waste Material for Cement Replacement and the Effect of Its Fineness in Soft Soil Stabilisation

Authors: Hassnen M. Jafer, W. Atherton, F. Ruddock, E. Loffil

Abstract:

This paper represents the results of experimental work to investigate the suitability of a waste material (WM) for soft soil stabilisation. In addition, the effect of particle size distribution (PSD) of the waste material on its performance as a soil stabiliser was investigated. The WM used in this study is produced from the incineration processes in domestic energy power plant and it is available in two different grades of fineness (coarse waste material (CWM) and fine waste material (FWM)). An intermediate plasticity silty clayey soil with medium organic matter content has been used in this study. The suitability of the CWM and FWM to improve the physical and engineering properties of the selected soil was evaluated dependant on the results obtained from the consistency limits, compaction characteristics (optimum moisture content (OMC) and maximum dry density (MDD)); along with the unconfined compressive strength test (UCS). Different percentages of CWM were added to the soft soil (3, 6, 9, 12 and 15%) to produce various admixtures. Then the UCS test was carried out on specimens under different curing periods (zero, 7, 14, and 28 days) to find the optimum percentage of CWM. The optimum and other two percentages (either side of the optimum content) were used for FWM to evaluate the effect of the fineness of the WM on UCS of the stabilised soil. Results indicated that both types of the WM used in this study improved the physical properties of the soft soil where the index of plasticity (IP) was decreased significantly. IP was decreased from 21 to 13.64 and 13.10 with 12% of CWM and 15% of FWM respectively. The results of the unconfined compressive strength test indicated that 12% of CWM was the optimum and this percentage developed the UCS value from 202kPa to 500kPa for 28 days cured samples, which is equal, approximately 2.5 times the UCS value for untreated soil. Moreover, this percentage provided 1.4 times the value of UCS for stabilized soil-CWA by using FWM which recorded just under 700kPa after 28 days curing. 

Keywords: Soft soil stabilisation, waste materials, fineness, and unconfined compressive strength.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1107409

References:

[1] Kolias, S., Kasselouri, V., and Karahalios, A. (2005) ‘Stabilisation of clayey soils with high calcium fly ash and cement’. Cement & Concrete Composites, 27 (2005), P. 301–313.
[2] Modarres, A., and Nosoudy, Y. M. (2015), Clay Stabilisation Using Coal Waste and Lime – Technical and Environmental Impact. Applied Clay Science, pp. 1-8.
[3] Miura, N., Horpibulsuk, S., and Nagaraj, T.S. (2002) Engineering Behavior of Cement Stabilized Clay at High Water Content. Soils and Foundations, Japanese Geotechnical Society, Vol. 41, No. 5, pp. 33-45.
[4] Raoul, J., Frank, R., Damien, R., and Laurent, M. (2010) Stabilisation of Estuarine Silt with Lime and/or Cement. Applied Clay Science, 50, P 395-400.
[5] Farouk, A., and Shahien, M. (2013) Ground Improvement Using SoilCement Columns: Experimental Investigation. Alexandria Engineering Journal, 52, pp. 733-740.
[6] Önal, O. (2014) Lime Stabilization of Soils Underlying a Salt Evaporation Pond: A Laboratory Study. Marine Georesources & Geotechnology, 33, 391-402.
[7] O’Rourke, B., McNally, C., and Richardson, M. G. (2009). Development of Calcium Sulfate–ggbs–Portland Cement Binders. Construction and Building Materials, 23(1), pp. 340-346.
[8] Merchant Research & consulting ltd (2013) World production structure, by country, 2012 (online) Available at: http://mcgroup.co.uk/news/20130802/cement-production-increased- 3.html (Accessed 19th January, 2015).
[9] Mujah, D., Rahman, M. E. & ZAIN, N. H. M. 2015. Performance evaluation of the soft soil reinforced ground palm oil fuel ash layer composite. Journal of Cleaner Production, 95, 89-100.
[10] Edeh, J. E., Agbede, I. O. & Tyoyila, A. 2014. Evaluation of Sawdust Ash–Stabilized Lateritic Soil as Highway Pavement Material. Journal of Materials in Civil Engineering, 26, 367 - 373.
[11] Yadu, L., and Tripathi, R. K. (2013) Stabilisation of soft soil with Granulated Blast Furnace Slag and Fly Ash. International Journal of Research in Engineering and Technology, 2 (2), P. 115-119.
[12] Horpibulsuk, S., Phetchuay, C., Chinkulkijniwat, A. & Cholaphatsorn, A. 2013. Strength development in silty clay stabilized with calcium carbide residue and fly ash. Soils and Foundations, 53, 477-486.
[13] Seco, A., Ramírez, F., Miqueleiz, L. & García, B. 2011. Stabilization of expansive soils for use in construction. Applied Clay Science, 51, 348- 352.
[14] Abd El-Aziz, M., Abo Hashem, and El. Shourbgy. (2006), The Effect of Lime-Silica fume Stabilizer on Engineering Properties of Clay Subgrade. In proceeding of Fourth Monsoura International Engineering Conference (4th IEC), Faculty if Engineering University, Egypt.
[15] Lin, D., Lin, K., and Luo, H. (2007) ‘A Comparison between Sludge Ash and Fly Ash on the Improvement in Soft Soil’ Journal of the Air & Waste Management Association, 57, P 59-64.
[16] Brooks, R. (2010) Soil Stabilisation with Lime and Rice Husk Ash. International Journal of Applied Engineering Research, 5 (7), pp. 1077 - 1086.
[17] Ahmed, J., Abdul Rahman, A., Mohd Ali, M., & Rahman, K. (2011). Peat Soil Treatment Using POFA. IEEE Colloquium on Humanities, Science and Engineering Research (CHUSER 2011), Penang, 5-6 December 2011.
[18] Manso, J. M., Ortega-López, V., Polanco, J. A. & Setién, J. (2013) The use of ladle furnace slag in soil stabilization. Construction and Building Materials, 40, 126-134.
[19] Fattah, M., Y., Al-Saidi, A., and Jaber, M. (2014) Consolidation Properties of Compacted Soft Soil Stabilized with Lime-Silica Fume Mix. International Journal of Scientific & Engineering Research, 5, 1675-1682.
[20] Celik, M., Damci, E., and Piskin, S. 2008. Characterisation of Fly Ash and its Effect on the Compressive Strength Properties of Portland cement. Indian Journal of Engineering & Materials Science, 15, 433- 440.
[21] Sun, H., Hohl, B., Cao, Y., Handwerker, C., Rushing, T. S., Cummins, T. K. & WEISS, J. 2013. Jet mill grinding of portland cement, limestone, and fly ash: Impact on particle size, hydration rate, and strength. Cement and Concrete Composites, 44, 41-49.
[22] Xu, W., Lo, Y. T., Ouyang, D., Memon, S. A., Xing, F., Wang, W. & Yuan, X. 2015. Effect of rice husk ash fineness on porosity and hydration reaction of blended cement paste. Construction and Building Materials, 89, 90-101.
[23] European Committee for Standardization, (2014). BS EN 17892-4. Geotechnical Investigation and Testing - Laboratory Testing of Soil, Part 4: Determination of Particle Size Distribution. London, UK: British Standard Institution
[24] British Standard, (1998) BS 1377-4-7:1990. Method of Test for Soils for Civil Engineering Purposes. London, UK: British Standard Institution.
[25] British Standard, (2002). BS 1377-4:1990. Method of Test for Soils for Civil Engineering Purposes, part 4: Compaction-related Tests. London, UK: British Standard Institution.
[26] Gharib, M., Saba, H., and Barazesh, A. (2012). Experimental Investigation of Impact of Adding Lime on Atterberg Limits in Golestan Province Soils. International Research Journal of Applied and Basic Science, 3(4), 796-800.