Papers by Author: Zhong Wen Ou

Abstract: Study on the geopolymers has been a history of nearly 40 years, because of its huge comparative advantage and attractive prospect, has become a hot research field of international materials.In this paper, based on the history and the present status of geopolymers cementitious materials development, summarized geopolymer cementitious material in the selection of raw materials, the activation agent development,preparation process research, cementitious material properties, mechanical properties, durability and engineering applications. progress made and trends.On this basis, expounded the problem of large-scale widely used the geopolymers need to continue to address, and pointed out the direction for its further research and application.

Abstract: The modification effects of the cement and the water-based epoxy resin on the asphalt emulsified mortar are studied. The result shows that with the cement content 30% and water-epoxy resin emulsified content 30%, the modified asphalt emulsified mortar which can replace cement mortar meets the demands of the relative criterions. When the temperature reaches 140°C, both the tensile bond strength and the shear bond strength decrease to 0.1 MPa. So it is feasible to recycle the decorative stone .The micro-analysis of the modified mortar are investigated by using IR and TGA-DTA, and its modification mechanism is also discussed.

Abstract: It is inevitable for steel reinforcement to be corroded when mixed with seawater-and-seasand concrete. In order to improve steel corrosion protection properties of seawater-and-seasand concrete, reduce the chloride ion’s attack on steel reinforcement in structural concrete and lengthen the steel reinforcement’s service time, this paper presents an experimental study on whether admixtures like fly ash, slag and metakaolin in the seawater-and-seasand could retard the corrosion to steel reinforcement and provide protection to steel reinforcement in seawater-and-seasand concrete. The results indicated that metakaolin had a significant anti-corrosion effect and greatly enhanced the steel corrosion protection properties of seawater-and-seasand concrete whereas both fly ash and slag did not appear to have any obvious influence on curbing the corrosion of steel reinforcement.