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Time-To-Corrosion of Reinforcing Steel in Concrete Slabs. Volume 3. Performance After 830 Daily Salt Applications.

PB258446

Publication Date	1976
Personal Author	Clear, K. C.
Page Count	66
Abstract	The purpose of this investigation is to provide administrators and designers with factual data on which to base decisions on the type of protection to provide to bridge decks constructed in corrosive environments. Specifically, the objective is to determine the relative time-to-corrosion of reinforcing steel embedded in concrete slabs, fabricated from various mix designs and construction procedures when the slabs are subject to periodic setting with a 3 percent NaCl solution. One hundred and twenty-four, 4 ft. by 5 ft. by 6 in. reinforced concrete slabs were fabricated, cured, and placed in the outdoor exposure yard on elevated stands. Concrete covering the feasible range of mix designs were investigated. Clear concrete cover over the reinforcing steel was varied from 1 to 3 inches. Various finishing methods, curing procedures, admixtures, surface protective treatments and special new concretes were also included. This report, Volume 3, presents the results of evaluations of conventional concretes and those materials and techniques which 'looked good' in previous reports. 830 daily saltings were applied prior to this evaluation.
Keywords	Corrosion Reinforcing steels Reinforced concrete Highway bridges Deicers Sodium chloride Formulations Design Bridge decks Protective coatings Curing Additives
Source Agency	Federal Highway Administration
NTIS Subject Category	50A - Highway Engineering 50C - Construction Equipment, Materials, & Supplies 71G - Corrosion & Corrosion Inhibition
Corporate Authors	Federal Highway Administration, Washington, D.C.
Supplemental Notes	See also PB-226 053.
Document Type	Technical Report
Title Note	Interim rept. Jul 71-Dec 75.
NTIS Issue Number	197626

Time-To-Corrosion of Reinforcing Steel in Concrete Slabs. Volume 3. Performance After 830 Daily Salt Applications.

Time-To-Corrosion of Reinforcing Steel in Concrete Slabs. Volume 3. Performance After 830 Daily Salt Applications.
PB258446

Publication Date	1976
Personal Author	Clear, K. C.
Page Count	66
Abstract	The purpose of this investigation is to provide administrators and designers with factual data on which to base decisions on the type of protection to provide to bridge decks constructed in corrosive environments. Specifically, the objective is to determine the relative time-to-corrosion of reinforcing steel embedded in concrete slabs, fabricated from various mix designs and construction procedures when the slabs are subject to periodic setting with a 3 percent NaCl solution. One hundred and twenty-four, 4 ft. by 5 ft. by 6 in. reinforced concrete slabs were fabricated, cured, and placed in the outdoor exposure yard on elevated stands. Concrete covering the feasible range of mix designs were investigated. Clear concrete cover over the reinforcing steel was varied from 1 to 3 inches. Various finishing methods, curing procedures, admixtures, surface protective treatments and special new concretes were also included. This report, Volume 3, presents the results of evaluations of conventional concretes and those materials and techniques which 'looked good' in previous reports. 830 daily saltings were applied prior to this evaluation.
Keywords	Corrosion Reinforcing steels Reinforced concrete Highway bridges Deicers Sodium chloride Formulations Design Bridge decks Protective coatings Curing Additives
Source Agency	Federal Highway Administration
NTIS Subject Category	50A - Highway Engineering 50C - Construction Equipment, Materials, & Supplies 71G - Corrosion & Corrosion Inhibition
Corporate Authors	Federal Highway Administration, Washington, D.C.
Supplemental Notes	See also PB-226 053.
Document Type	Technical Report
Title Note	Interim rept. Jul 71-Dec 75.
NTIS Issue Number	197626