Effects of Temperature in Different Initial Duration Time for Soft Clay Stabilized by Fly Ash Based Geopolymer
When soft clay soils are included in engineering projects, it’s stabilized usually with some kinds of admixtures named as stabilizers. The common stabilizers that highly practiced are OPC, lime, high calcium fly ash (FA), etc. Each one of these stabilizers has its shortcomings. Geopolymers are the product of alkali activated aluminosilicate sources that excelled as an alternative to ordinary binders due to its sustainability, low cost and good mechanical properties. This study investigates the effects of some key elements like liquid over fly ash ratio (Liq/FA), initial duration curing time (D) and its temperature to soil – FA based Geopolymers samples characterized by its unconfined compressive strength testing (UCS), volumetric measurements, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-Ray diffraction (XRD). The Liq/FA taken as 2.71, 3.167, 3.8 and 4.75 respectively and the duration time taken were 1, 6, 18 and 24 hrs. respectively. The tests results showed that the maximum peak strength gain when Liq/FA is 3.8 at 90 oC with 24 hrs. D. It was observed that Young’s Modulus increased with increasing curing temperature for certain D. Volumetric strain increased by increasing D and its temperature. SEM and XRD analyses confirmed the Geopolymers gels formation for a selective precursor while EDX analyses showed that silicon over aluminium ratio is 1.38 for selective spectrum within the gel to the same mixture.
P., Donald, Man-Chung Yeung, and William A. Geotechnical Engineering, 2011.
Brand, E.W., and R.P. Brenner. “Preface.” Soft Clay Engineering (1981): 4–6. doi:10.1016/b978-0-444-41784-8.50003-4.
B.B, Broms. “Stabilization of Soft Clay in Southeast Asia”, 1987. Proceedings of 5th International Geotechnical Seminar.
Nicholson, Peter G. “Admixture Soil Improvement.” Soil Improvement and Ground Modification Methods (2015): 231–288. doi:10.1016/b978-0-12-408076-8.00011-x.
Khedari, Joseph, Pornnapa Watsanasathaporn, and Jongjit Hirunlabh. “Development of Fibre-Based Soil–cement Block with Low Thermal Conductivity.” Cement and Concrete Composites 27, no. 1 (2005): 111–116. doi:10.1016/j.cemconcomp.2004.02.042.
Morsy, M. S., S. H. Alsayed, Y. Al-Salloum, and T. Almusallam. “Effect of Sodium Silicate to Sodium Hydroxide Ratios on Strength and Microstructure of Fly Ash Geopolymer Binder.” Arabian Journal for Science and Engineering 39, no. 6 (April 4, 2014): 4333–4339. doi:10.1007/s13369-014-1093-8.
Zhang, Mo, Hong Guo, Tahar El-Korchi, Guoping Zhang, and Mingjiang Tao. “Experimental Feasibility Study of Geopolymer as the Next-Generation Soil Stabilizer.” Construction and Building Materials 47 (October 2013): 1468–1478. doi:10.1016/j.conbuildmat.2013.06.017.
Cristelo, Nuno, Stephanie Glendinning, Tiago Miranda, Daniel Oliveira, and Rui Silva. “Soil Stabilisation Using Alkaline Activation of Fly Ash for Self Compacting Rammed Earth Construction.” Construction and Building Materials 36 (November 2012): 727–735. doi:10.1016/j.conbuildmat.2012.06.037.
Fernández-Jiménez, A., and A. Palomo. “Composition and Microstructure of Alkali Activated Fly Ash Binder: Effect of the Activator.” Cement and Concrete Research 35, no. 10 (October 2005): 1984–1992. doi:10.1016/j.cemconres.2005.03.003.
J, Davidovits. “Geopolymer Properties and Chemistry”, 1988. European conference on soft mineralurgy., Compiegne., France.
Bakria, A.M. Mustafa Al, H. Kamarudin, M. BinHussain, I.Khairul Nizar, Y. Zarina, and A.R. Rafiza. “The Effect of Curing Temperature on Physical and Chemical Properties of Geopolymers.” Physics Procedia 22 (2011): 286–291. doi:10.1016/j.phpro.2011.11.045.
Provis, John L., and Jannie S. J. van Deventer. “Geopolymers” (2009). doi:10.1533/9781845696382.
ASTM E111-04. Standard Test Method for Young’s Modulus, Tangent Modulus, and Chord Modulus. ASTM International; 2010.
Demie, Samuel, Muhd Fadhil Nuruddin, Memon Fareed Ahmed, and Nasir Shafiq. “Effects of Curing Temperature and Superplasticizer on Workability and Compressive Strength of Self-Compacting Geopolymer Concrete.” 2011 National Postgraduate Conference (September 2011). doi:10.1109/natpc.2011.6136362.
ASTM D4972-01. Standard Test Method for pH of soils ASTM International.
Khale, Divya, and Rubina Chaudhary. “Mechanism of Geopolymerization and Factors Influencing Its Development: a Review.” Journal of Materials Science 42, no. 3 (January 20, 2007): 729–746. doi:10.1007/s10853-006-0401-4.
S. Byakodi, Amar, and Srinivas N. “EFFECT OF CURING TEMPERATURE ON COMPRESSIVE STRENGTH OF GEOPOLYMER CONCRETE”, July 2016. International Journal of Recent Scientific Research.
Salah Al-Shathr, Basil, Tareq Saleh Al-Attar, and Zaid Ali Hasan. “Effect of Curing System on Metakaolin Based Geopolymer Concrete”, 2016. Journal of Babylon University/Engineering Sciences.
K. Jamdade, Pradnya. “Effect of Temperature and Time of Curing on Strength of Flyash Based Geopolymer Concrete”, June 2016. International Journal of Innovative Research in Science, Engineering and Technology.
A. Patil, Amol, H.S. Chorr, and P.A Dode. “Effect of Curing Condition on Strength of Geopolymer Concrete”, 2014. Advances in Concrete Construction.
Ekaputri, Januarti Jaya, Triwulan, S. Junaedi, Fansuri, and R.B. Aji. “Light Weight Geopolymer Paste Made with Sidoarjo Mud (Lusi).” Materials Science Forum 803 (August 2014): 63–74. doi:10.4028/www.scientific.net/msf.803.63.
Patankar, Subhash V., Yuwaraj M. Ghugal, and Sanjay S. Jamkar. “Effect of Concentration of Sodium Hydroxide and Degree of Heat Curing on Fly Ash-Based Geopolymer Mortar.” Indian Journal of Materials Science 2014 (2014): 1–6. doi:10.1155/2014/938789.
Adam, Andi Arham, and X.X.X. Horianto. “The Effect of Temperature and Duration of Curing on the Strength of Fly Ash Based Geopolymer Mortar.” Procedia Engineering 95 (2014): 410–414. doi:10.1016/j.proeng.2014.12.199.
Apodaca-García, Sergio, Susana P. Arredondo-Rea, José M. Gómez-Soberón, Jorge L. Almaral-Sánchez, and Ramón Corral-Higuera. “Temperature for Geopolymerization of Fly Ash. Mechanical Behaviour”, March 30, 2015. International Journal of Material Science & Engineering.
Ekaputri, Januarti Jaya, Koichi Maekawa, and Tetsuya Ishida. “Experimental Study on Internal RH of BFS Mortars at Early Age.” Materials Science Forum 857 (May 2016): 305–310. doi:10.4028/www.scientific.net/msf.857.305.
Triwulan, Januarti Jaya Ekaputri, and Nur Fadlilah Priyanka. “The Effect of Temperature Curing on Geopolymer Concrete.” Edited by M.A.B. Abdullah, S.Z. Abd Rahim, M.E. Muhammad Suandi, M.N. Mat Saad, and M.F. Ghazali. MATEC Web of Conferences 97 (2017): 01005. doi:10.1051/matecconf/20179701005.
S, Chithra, and Dhinakaran G. “Effect of Hot Water Curing and Hot Air Oven Curing on Admixed Concrete”, June 2014. International Journal of ChemTech Research.
Singhi, Binod, Aminul Islam Laskar, and M. Ali Ahmed. “Investigation on Soil–Geopolymer with Slag, Fly Ash and Their Blending.” Arabian Journal for Science and Engineering 41, no. 2 (May 5, 2015): 393–400. doi:10.1007/s13369-015-1677-y.
ASTM D4609. Standard guide for evaluating effectiveness of admixtures for soil stabilization. ASTM International; 2008.
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