01763438

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https://annualmeeting.myt...nlineProgram/Details/15446

Using sealers on bridge deck surface reduce the penetration of chlorides into the concrete deck. thus reducing the corrosion of steel reinforcement and concrete deterioration. This will improve the long-term performance of the bridge deck life, and hence extend bridge deck life. Two concrete ready mixtures were being used in this research. Five deck sealers were studied to assess the effectiveness and performance of these commercially available sealers. Four laboratory tests were conducted on deck sealers. All laboratory tests are according to the specification of ASTM, American Association of State Highway and Transportation Officials (AASHTO), National Cooperative Highway Research Program (NCHRP) reports series II. After finishing the laboratory tests, a statistical analysis “95% confidence interval” was done on the tests. All the sealers were assigned into different categories according to their performance, and according to the variation of the 95% confidence interval a weighting score was assigned to each category of sealer’s performance. To report the effect of the sealers, a comparison was made between the performance of the specimens covered with sealers and control specimens (i.e. specimens without any sealers). All the sealers were so effective in reducing the chloride ingress into the concrete.

This paper was sponsored by TRB committee AKT40 Standing Committee on Structures Maintenance.

TRBAM-21-00848

English

17p

2021

Transportation Research Board 100th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Alternatives analysis; Bridge decks; Chloride content; Concrete bridges; Corrosion protection; Laboratory tests; Performance; Sealing compounds; Statistical analysis

Bridges and other structures; Highways; Maintenance and Preservation; Materials

Transportation Research Board Annual Meeting 2021 Paper #TRBAM-21-00848

TRIS, TRB, ATRI

Dec 23 2020 10:59AM