Total views : 163

The Effect of Sodium Hydroxide Molarity and Other Parameters on Water Absorption of Geopolymer Mortars


  • Department of Structure and Materials, Faculty of Civil Engineering, Universiti Teknologi Malaysia,81310 UTM Johor Bahru, Johor, Malaysia
  • Department of Materials Science, Research Institute of Hydro-Quebec, 1800 Mte Ste. Julie, Varennes, Quebec, Canada, J3X 1S1, Canada


Objective: Durability one of the critical role effect in geopolymer serviceability. The capability of water to penetrate the mortar microstructure is mainly used to measure the durability, which also called permeability. Methods/Statistical Analysis: The influence of sodium hydroxide (NaOH) molarity, alkali Solution to Binder ratio (S:B), binder to aggregate ratio (B:A) and sodium silicate to sodium hydroxide ratio (NS:NH) on water absorption of Geopolymer Mortar (GPMs) are investigated in this article. Geopolymer mortar specimens of different NaOH molarity, S:B, B:A, and NS:NH were prepared and cured at different temperatures, 27°C and 60°C. Granulated blast furnace slag, fly ash, waste ceramic and waste glass bottle were used as a binder and mixed with river sand as fine aggregate. Findings: The results of experimental indicated that water absorption significantly affected of curing temperatures. The lower water absorption results were observed of the samples cured at ambient temperature (27°C) compared to samples cured at oven temperature (60°C). Applications/Improvements: The geopolymer specimens’ water absorption observed positively enhanced with increase concentration of alkaline solution.


Geopolymer, Sodium Hydroxide Molarity, Water Absorption.

Full Text:

 |  (PDF views: 163)


  • Huseien GF, Mirza J, Ariffin NF, Hussin MW. Synthesis and characterization of self-healing mortar with modified strength. Jurnal Teknologi. 2015; 76(1):195-200.
  • Spiesz P, Yu Q, Brouwers H. Development of cement-based lightweight composites – Part 2: Durability-related properties.Cement and Concrete Composites. 2013; 44:30-40.
  • Bhutta MAR, Tsuruta K, Mirza J. Evaluation of high-performance porous concrete properties. Construction and Building Materials. 2012; 31:67-73.
  • Mirza J, Durand B, Bhutta AR, Tahir MM. Preferred test methods to select suitable surface repair materials in severe climates. Construction and Building Materials.2014; 50:692-8.
  • Fagerlund G. A service life model for internal frost damage in concrete. Report TVBM. 2004. p. 135.
  • Leech C, Lockington D, Doug Hooton R, Galloway G, Cowin G, Dux P. Validation of Mualem’s conductivity model and prediction of saturated permeability from sorptivity.ACI Materials Journal. 2008; 105(1):44-51.
  • Scherer GW, Valenza J. Mechanisms of frost damage.Materials Science of Concrete. 2005; 7(60):209-46.
  • De Schutter G, Audenaert K. Evaluation of water absorption of concrete as a measure for resistance against carbonation and chloride migration. Materials and Structures.2004; 37(9):591-6.
  • Kolias S, Georgiou C. The effect of paste volume and of water content on the strength and water absorption of concrete.Cement and Concrete Composites. 2005; 27(2):211-6.
  • Khatib J, Mangat P. Absorption characteristics of concrete as a function of location relative to casting position. Cement and Concrete Research. 1995; 25(5):999-1010.
  • Thokchom S, Ghosh P, Ghosh S. Effect of water absorption, porosity and sorptivity on durability of geopolymer mortars.ARPN Journal of engineering and Applied Sciences.2009; 4(7):28-32.
  • Aleem M, Arumairaj P. Geopolymer concrete: A review. International Journal of Engineering Sciences and Emerging Technologies. 2012; 1(2):118-22.
  • Wallah S, Rangan BV. Low-calcium fly ash-based geopolymer concrete: Long-term properties. Res Report-GC2.Curtin University, Australia. 2006. p. 76-80.
  • Van Jaarsveld J, Van Deventer J, Lukey G. The characterization of source materials in fly ash-based geopolymers.Materials Letters. 2003; 57(7):1272-80.
  • Pitroda J, Umrigar F, Principal B, Anand G-I.Evaluation of sorptivity and water absorption of concrete with partial replacement of cement by thermal industry waste (Fly Ash).IJEIT. 2013; 2(7):245-9.
  • Parrott L. Water absorption in cover concrete.Materials and Structures. 1992; 25(5):284-92.
  • Parrott L. Variations of water absorption rate and porosity with depth from an exposed concrete surface: Effects of exposure conditions and cement type. Cement and Concrete Research. 1992; 22(6):1077-88.
  • Huseien GF, Mirza J, Ismail M, Hussin MW. Influence of different curing temperatures and alkali activators on properties of GBFS geopolymer mortars containing fly ash and palm-oil fuel ash. Construction and Building Materials.2016; 125:1229-40.
  • Huseien GF, Mirza J, Ismail M, Ghoshal SK, Ariffin MAM.Effect of metakaolin replaced granulated blast furnace slag on fresh and early strength properties of geopolymer mortar.Ain Shams Engineering Journal. 2016.
  • Huseiena GF, Mirzaa J, Ismaila M, Hussina MW, Ariffina MAM. Potential use coconut milk as alternative to alkali solution for geopolymer production. Jurnal Teknologi.2016; 78(11):133-9.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.