Research on Alkali-Activator and its Effects on Mechanical Properties of Slag-Based Geopolymer at early Age

Abstract:

This report studied the influence of effects such as type, modulus, dosage of the alkali-activator on mechanical properties of slag-based geopolymer. The analyzing results indicate that compare to the Na₂SiO₃, K₂SiO₃ has significant activate effects on slag-based geopolymer. The modulus and dosage have obvious significance on early compression strength of slag-based geopolymer. With the increase of modulus, its early compression strength has apparent increase. With the increase of dosage, its early compression strength increase firstly and then decrease. When the dosage is 12%, the compression strength of the material is highest. The change of modulus and dosage of the alkali-activator has little influence on flexural strength of slag-based geopolymer. With the increase of dosage, its ratio of flexural to compressive strength has a downward trend. And the material brittleness addition.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 399-403
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.399
• Online since: May 2014
• Authors: Li Shun Chen*, Xiao Chen, Jian Tong Xu, Zhong Yang
• Keywords: Alkali-Activator, Dosage early Mechanical Properties, Modulus, Slag-Based Geopolymer

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