Paper Title:
Factors Influencing Bonding Strength of Geopolymer-Aggregate Interfacial Transition Zone
  Abstract

Fundamental studies on geopolymer are increased rapidly because of its potential commercial applications. However, little work has been done on the relationship of the interfacial transitional zone between geopolymer and aggregate and its influence on the final chemical and physical properties of geopolymeric products derived from waste materials. In this paper, factors that influencing the interfacial transition zone of geopolymer concrete such as the type of the aggregate and the oxide compositions of raw materials was studied. The microstructure was also observed through relative devices. The presented results show that bonding strength of geopolymer-marble interfacial transitional zone, of which the 28d bonding strength reached up to 7.9 MPa, was higher than that of geopolymer-granite. The bonding strength of geopolymer-marble/geopolymer-granite interfacial transitional zone increased and finally reached up to 7.9 MPa/4.3 MPa with the molar ratio of n(SiO2)/n(Al2O3) increased within the range of 2.6~2.9. Both geopolymer-marble and geopolymer-granite bonding strength decreased as the molar ratio of n(SiO2)/ n(Na2O) increased. The mechanical properties of interfacial transitional zone between geopolymer and stone were affected by the oxide component of the geopolymer and the type of the raw materials.

  Info
Periodical
Edited by
Xingkuan Wu and Hao Xie
Pages
1-7
DOI
10.4028/www.scientific.net/AMR.224.1
Citation
Q. Wang, Z. Y. Ding, J. Da, K. Ran, Z. T. Sui, "Factors Influencing Bonding Strength of Geopolymer-Aggregate Interfacial Transition Zone", Advanced Materials Research, Vol. 224, pp. 1-7, 2011
Online since
April 2011
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