Antifouling marine concrete
Various toxic agents were evaluated as the their capability to prevent or inhibit the attachment of marine fouling organisms to concrete. Creosote and bis-(tri-n-butyltin) oxide (TBTO) were impregnated into porous aggregate which was used in making concrete. Cuprous oxide, triphenyltin hydroxide (TPTH), and 2-2-bis-(p-methoxyphenyl)-1,1,1-trichloroethane (methoxychlor) were used as dry additives. Two proprietary formulations were applied as coatings on untreated concrete. Test specimens were exposed at Port Hueneme, CA, and Key Biscayne, FL. The efficacy of toxicants was determined by periodically weighing the adhering fouling organisms. Concrete prepared with an aggregate impregnated with a TBTO/creosote mixture has demonstrated the best antifouling performance of those specimens exposed for more than one year. The two proprietary coatings and the concrete containing methoxychlor, TPTH, and cuprous oxide as dry additives have exhibited good antifouling properties, but they have been exposed for a shorter time. The strength of concrete containing the toxicants was acceptable, and the toxicants did not increase the corrosion rate of reinforcing rods. Organotin compounds were essentially unchanged in concrete specimens exposed 6 1/2 years in seawater.
- Research Organization:
- Civil Engineering Lab. (Navy), Port Hueneme, CA (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6832357
- Report Number(s):
- ANL/OTEC-BCM-010
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
36 MATERIALS SCIENCE
360604 -- Materials-- Corrosion
Erosion
& Degradation
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
ANTIFOULANTS
BUILDING MATERIALS
COATINGS
COMPRESSION STRENGTH
CONCRETES
CREOSOTE
EVALUATION
FOULING
HYDROGEN COMPOUNDS
IMPREGNATION
MATERIALS
MECHANICAL PROPERTIES
OCEAN THERMAL POWER PLANTS
OFFSHORE PLATFORMS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXYGEN COMPOUNDS
POWER PLANTS
SEAWATER
SOLAR POWER PLANTS
THERMAL POWER PLANTS
TIN COMPOUNDS
TOXIC MATERIALS
TOXICITY
WATER
140800* -- Solar Energy-- Ocean Energy Systems
36 MATERIALS SCIENCE
360604 -- Materials-- Corrosion
Erosion
& Degradation
42 ENGINEERING
423000 -- Engineering-- Marine Engineering-- (1980-)
ANTIFOULANTS
BUILDING MATERIALS
COATINGS
COMPRESSION STRENGTH
CONCRETES
CREOSOTE
EVALUATION
FOULING
HYDROGEN COMPOUNDS
IMPREGNATION
MATERIALS
MECHANICAL PROPERTIES
OCEAN THERMAL POWER PLANTS
OFFSHORE PLATFORMS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXYGEN COMPOUNDS
POWER PLANTS
SEAWATER
SOLAR POWER PLANTS
THERMAL POWER PLANTS
TIN COMPOUNDS
TOXIC MATERIALS
TOXICITY
WATER