MORTAR FOR PLASTERER HAVING SMALL ELECTRIC RESISTANCE, HARDENED BODY USING THE SAME AND CORROSION PREVENTION METHOD FOR STEEL MATERIAL IN CONCRETE STRUCTURE USING THE HARDENED BODY

摘要

PROBLEM TO BE SOLVED: To provide mortar for a plasterer which eliminates drooping even if a ratio of water to a binder is increased and has small electric resistance and low shrinkage and to provide a corrosion prevention method using the mortar for the plasterer which further reduces the shrinkage, keeps the electric resistance small for a long term and does not prevent the penetration of chlorine gas and the like.;SOLUTION: The mortar for the plasterer is made by using a mortar composition blended with the binder containing cement, a fine aggregate, a water reducing agent and water and is obtained by kneading a mixture of mortar which is prepared by using a mortar blend having a ratio of water to the binder of 35-55% and a unit water amount of 250-400 kg/m³ and which has a no-tapping mortar flow value of 200-320 mm and a water soluble acrylic polymer and aluminum sulfate. A hardened body using the mortar for the plasterer has an electric resistivity of 100 kΩ cm or less and a shrinkage amount of -800×10^-6 or less. A mortar hardened body is made by coating an organic-inorganic composite coating film curing agent on the surface of the hardened body of the mortar for the plasterer. In a corrosion prevention method for a steel material in a concrete structure, the hardened body of the mortar for the plasterer or the mortar hardened body is used.;COPYRIGHT: (C)2010,JPO&INPIT