Thermal stability and mechanic al properties of alkaline activated mortars synthesized from POFA after exposure to elevated temperatures
DOI:
https://doi.org/10.58916/jhas.v7i6.585الكلمات المفتاحية:
الانجليزيةالملخص
This paper presents results from experimental studies on the Thermal stability and mechanical properties of alkaline-activated mortars, which that prepared by alkaline solution activating POFA.The compressive strength test and characterization, employing XRD and, FESEM were conducted on geopolymer mortar specimens at ambient temperature and after exposure to elevated temperatures from 200℃ - 1000°C. Results from these tests show that geopolymer mortar exhibits higher temperature-induced degradation in compressive strength and body at1000°C. the mixture of POFA experienced no thermal cracks, its deformation occurred at 1000℃ which resulted in extensive shape changes. measure the compressive strength of the exposed alkaline-activated mortars. The relative residual compressive load for the mixture (a) decreased from 77% to 40% after exposure to temperatures from 200°C to 800°C
التنزيلات
المراجع
J. Davidovits, Geopolymers and geopolymeric materials, J. Therm. Anal. 35 (2) (1989) 429–441.
F.U.A. Shaikh, Review of mechanical properties of short fibre reinforced geopolymer composites, Constr. Build. Mater. 43 (2013) 37–49.
P. Duxson, A. Fernandez-Jimenez, J.L. Provis, G.C. Lukey, A. Palomo, J.S.J. van
Deventer, Geopolymer technology: the current state of the art, J. Mater. Sci. 42 (9) (2007) 2917–2933.
S.A. Bernal, E.D. Rodriguez, R.M. de Gutierrez, M. Gordillo, J.L. Provis, Mechanical and thermal characterisation of geopolymers based on silicat eactivated metakaolin/slag blends, J. Mater. Sci. 46 (16) (2011) 5477–5486.
S. Alam, S. Gul, Correction: assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar, RSC Adv. 5 (14) (2015) 10680.
Topala Ö, Karakoç MB, Özcan A. Effects of elevated temperatures on the properties of ground granulated blast furnace slag (GGBFS) based geopolymer concretes containing recycled concrete aggregate. Eur J Environ Civ Eng. 2022;26(10):4847-62.
Hasnaoui A, Ghorbel E, Wardeh G. Optimization approach of granulated blast furnace slag and metakaolin based geopolymer mortars. Constr Build Mater. 2019;198:10-26.
H. Chong, P. Chia, M. Ahmad, The adsorption of heavy metal by Bornean oil palm shell and its potential application as constructed wetland media, Bioresour. Technol. 130 (2013) 181–186.
C. Di Blasi, Combustion and gasification rates of lignocellulosic chars, Prog. Energy Combust. Sci. 35 (2) (2009) 121–140.
J. Kanadasan, H.A. Razak, Mix design for self-compacting palm oil clinker concrete based on particle packing, Mater. Des. 56 (2014) 9–19.
S. Ferreiro, M. Frías, R.V. de la Villa, M.S. de Rojas, The influence of thermal activation of art paper sludge on the technical properties of blended Portland cements, Cement Concr. Compos. 37 (2013) 136–142.
M. Karim, M. Zain, M. Jamil, F. Lai, M. Islam, Strength of mortar and Concrete as influenced by Rice husk ash: a review, World Appl. Sci. J. 19 (10) (2012) 1501–1513.
S. Lee, M.-D. Seo, Y.-J. Kim, H.-H. Park, T.-N. Kim, Y. Hwang, S.-B. Cho, Unburned carbon removal effect on compressive strength development in a honeycomb briquette ash-based geopolymer, Int. J. Miner. Process. 97 (1) (2010) 20–25.
Bernal, S. A., Rodríguez, E. D., de Gutiérrez, R. M., Gordillo, M. & Provis, J. L. (2011b). Mechanical and thermal characterisation of geopolymers based on silicate-activated metakaolin/slag blends. Journal of materials science, 46(16), 5477-5486.
Ranjbar, N., Mehrali, M., Alengaram, U. J., Metselaar, H. S. C. & Jumaat, M. Z. (2014a). Compressive strength and microstructural analysis of fly ash/palm oil fuel ash based
geopolymer mortar under elevated temperatures. Construction and Building Materials, 65, 114-121
ASTM, C. (1999a). 109 Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (using 2-in. or [50-mm] Cube Specimens). Philadelphia, PA: American Society for Testing and Materials, 318.
Murri, A. N., Rickard, W., Bignozzi, M. & Van Riessen, A. (2013). High temperature behaviour of ambient cured alkali-activated materials based on ladle slag. Cement and Concrete Research, 43, 51-61.
Islam, A., Alengaram, U. J., Jumaat, M. Z. & Bashar, I. I. (2014a). The development of compressive strength of ground granulated blast furnace slag-palm oil fuel ash-fly ash based geopolymer mortar. Materials & Design, 56, 833-841.
التنزيلات
منشور
إصدار
القسم
كيفية الاقتباس
