RUST PREVENTING PASTE FOR CHLORIDE ION ADSORBENT AND MORTAR AND SALT DAMAGE SUPPRESSING CONSTRUCTION USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a rust preventing paste capable of suppressing the continuous progress of deterioration due to salt damage by including a Portland-based cement and a chloride ion adsorbent as principal components therein. ;SOLUTION: This rust preventing paste consists essentially of a Portland- based cement and a chloride ion adsorbent. Since chlorides added from sea salt grains or sea sand, etc., are mainly fed as sodium chloride, not only salt damage is promoted but also alkali-aggregate reaction is readily initiated by the feed of sodium ions. Thereby, an alkali metallic ion adsorbent in addition to the chloride ion adsorbent is preferably added thereto for the purpose of suppressing the alkali-aggregate reaction. A rust preventing mortar is prepared by adding the chloride ion adsorbent and the alkali metallic ion adsorbent to a cement and further including a cement-based expansive additive therein in order to prevent cracks from occurring due to drying shrinkage. In the case of the rust preventing paste, the added chloride ion adsorbent is preferably used in an amount within the range of 10-70 pts.wt. based on 100 pts.wt. cement by considering the rust preventing effects, executability, etc.;COPYRIGHT: (C)1997,JPO