PRIMARY RUSTPROOFING COATING MATERIAL COMPOSITION, ITS COATING METHOD, PRIMARY RUSTPROOFING COATING FILM, PRIMARY RUSTPROOFING COATING MATERIAL COMPOSITION SET AND STEEL STRUCTURE COATED WITH THE COATING FILM

摘要

PROBLEM TO BE SOLVED: To obtain a primary rustproofing coating material composition capable of forming a primary rustproofing coating film having excellent cutting processability, suitable for a large-scale steel structure. ;SOLUTION: This primary rustproofing coating material composition comprises (a) a pigment-containing component containing zinc powder and a calcareous cement and (b) a binder-containing component containing a silicate compound. The calcareous cement is a ground material of one or more rocks of calcirudite, calcarenite, lime silttone and calcilutite and has preferably ≤50 μm average particle diameter. Preferably 0.5-20 wt.% calculated as calcium carbonate of the calcareous cement is contained in the pigment-containing component.;COPYRIGHT: (C)2001,JPO