Paint for seawater concrete : Engineering News Record, Vol. 118, No. 12

✍ Scribed by R.H.O.

• Publisher: Elsevier Science
• Year: 1937
• Tongue: English
• Weight: 52 KB
• Volume: 223
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(37)90351-x

✦ Synopsis

Paint for Seawater Vol. 118, No. 12.) This form of protection has been found desirable on some of the waterfront structures erected and maintained on San Francisco Bay by the Board of State Harbor Commissioners. The impervious protective coating is the result of many years testing. It is a compound of roofing asphalt with a melting point of not less than 15o deg. F. and IO per cent. of raw China wood oil. The compound is applied hot (about 25o to 3oo deg. F.). It may be applied with a spray gun. The coating does not harden and become brittle, but even after years of service retains a sufficient elasticity to prevent cracking or peeling off. It is suggested that for warmer climates a somewhat different percentage of the two ingredients might be desirable. Prior to application it is desirable to treat the surface with a priming coat to pick up loose particles and fill the pores. A very satisfactory primer can be made from the compound by thinning it with a cut-back of some sort. The compound was developed by Mr. A. A. M. Russell, testing engineer of the Board. R. H. O.