Effect of Fly Ash on Mechanical Properties and Structure of CaO-Al2O3-P2O5-SiO2 System

Autor: Shu Xia Ren, Shi Gang Mei, Xiu Shu Tian
Rok vydání: 2011
Předmět:
Zdroj: Applied Mechanics and Materials. :1233-1236
ISSN: 1662-7482
DOI: 10.4028/www.scientific.net/amm.55-57.1233
Popis: In this paper, mainly CaO-Al2O3-P2O5-SiO2gel system and the effect of fly ash on the mechanical properties and the microstructure of the hydrated system without and within lay ash at different ages have been studied. The structures were characterized by XRD and SEM. The experimental results show that fly ash does not hydrate at the early age and provides the interface, so the hydration products of CaO-Al2O3-P2O5-SiO2system is deposited directly on its surface, which lead to a lower early strength; but fly ash hydrates at the later age and improves the hydration of CaO-Al2O3-P2O5-SiO2system.
Databáze: OpenAIRE