RENOVATION METHOD OF REINFORCED CONCRETE STRUCTURE BY SPRAYED POLYMER CEMENT MORTAR : Experiments of construction environment, fresh and mechanical properties(Materials and Construction)

Abstract

This study paid attention to sprayed method with polymer cement mortar for renovation of reinforced concrete structure. This paper presents the results of several experiments about the working environment, the fresh and mechanical properties. It was confirmed that, construction with residence was possible except for working room, the properties of fresh mortar were moderate. The compressive and bending strength were sufficiently high, the method of the strength control was proposed. It was also confirmed that the adhesion strength was sufficiently high, and it was possible to keep the strength against hot and cold process and freezing and thawing cycles.