원문정보
초록
영어
A high-strength geopolymer was prepared with fly ash as a raw material by mixing 25% slag and 15% cement at an ambient temperature. The influence law of water glass modulus and alkali activator dosage on geopolymer strength at an ambient temperature was systematically investigated. Results indicated that an alkali activator dosage of 7% to 8% and a sodium silicate modulus of 1.4 to 1.6 are optimal ranges to increase geopolymer strength. In addition, the microstructure of fly ash geopolymer was observed through scanning electron microscopy, X-ray diffraction, and mercury intrusion porosimetry. The relation between the microstructure and mechanical properties of the material was revealed.
목차
1. Introduction
2. Experimental Investigation
2.1. Materials
2.2. Test Plan
2.3. Test Method
3. Results and Discussion
3.1. Influence of Alkali Dosage on Strength
3.2. Influence of Sodium Silicate Modulus on Strength
3.3. Analysis of Geopolymer Microstructure
4. Conclusions
Acknowledgments
References