Quantitative assessment of parameters that affect strength development in alkali activated fly ash binders

作者: Ali Kazemian , Asghar Gholizadeh Vayghan , Farshad Rajabipour

DOI: 10.1016/J.CONBUILDMAT.2015.05.078

关键词:

摘要: Abstract The influence of activator composition (pH, modulus), to fly ash ratio, (L/S)vol, and curing on strength development alkali activated (AAFA) mortars is investigated. A statistical analysis performed evaluate the significance these parameters develop a preliminary regression model for predicting 1-day strength. results show that achieve high strengths, activators with very pH (⩾15.0) or moderate modulus (pH ⩾ 14.75, n ⩾ 0.75) are needed. Such have viscosity lead low workability. AAFA does not monotonically increase reducing but maximum at intermediate (L/S)vol.

参考文章(33)
G. E. P. Box, D. R. Cox, An Analysis of Transformations Journal of the Royal Statistical Society: Series B (Methodological). ,vol. 26, pp. 211- 243 ,(1964) , 10.1111/J.2517-6161.1964.TB00553.X
John L Provis, Jan Stephanus Jakob Van Deventer, Geopolymers : structure, processing, properties and industrial applications CRC , Woodhead. ,(2009)
Paulo Monteiro, P. K. Mehta, Concrete: Microstructure, Properties, and Materials ,(2005)
Ana M Fernandez-Jimenez, Angel Palomo, Cecilio Lopez-Hombrados, Engineering Properties of Alkali-Activated Fly Ash Concrete Aci Materials Journal. ,vol. 103, pp. 106- 112 ,(2006) , 10.14359/15261
E. Ivan Diaz-Loya, Erez N. Allouche, Dexter Cahoy, Statistical-Based Approach for Predicting the Mechanical Properties of Geopolymer Concretes ASTM International. ,(2013) , 10.1520/STP156620120080
Alexandre Silva de Vargas, Denise C.C. Dal Molin, Antônio C.F. Vilela, Felipe José da Silva, Bruno Pavão, Hugo Veit, The effects of Na2O/SiO2 molar ratio, curing temperature and age on compressive strength, morphology and microstructure of alkali-activated fly ash-based geopolymers Cement & Concrete Composites. ,vol. 33, pp. 653- 660 ,(2011) , 10.1016/J.CEMCONCOMP.2011.03.006
Benjamin C. McLellan, Ross P. Williams, Janine Lay, Arie van Riessen, Glen D. Corder, Costs and carbon emissions for geopolymer pastes in comparison to ordinary portland cement Journal of Cleaner Production. ,vol. 19, pp. 1080- 1090 ,(2011) , 10.1016/J.JCLEPRO.2011.02.010
Valeria F.F Barbosa, Kenneth J.D MacKenzie, Clelio Thaumaturgo, Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers International Journal of Inorganic Materials. ,vol. 2, pp. 309- 317 ,(2000) , 10.1016/S1466-6049(00)00041-6
Mohan Jiang, Xiaoju Chen, Farshad Rajabipour, Chris T. Hendrickson, Comparative Life Cycle Assessment of Conventional, Glass Powder, and Alkali-Activated Slag Concrete and Mortar Journal of Infrastructure Systems. ,vol. 20, pp. 04014020- ,(2014) , 10.1061/(ASCE)IS.1943-555X.0000211