Concrete Bridge Deck Performance (2004) / Chapter Skim
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Pages 19-24
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19 CHAPTER FOUR BRIDGE DECK PROTECTIVE SYSTEMS This chapter deals with systems that are designed to protect the primary concrete and reinforcement from conditions that will cause their deterioration. The primary systems are overlays, membranes, sealers, and cathodic protection.
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20 FIGURE 4 Placement of a latex-modified overlay. from 6 to 9 years was reported by Hagen (1982)
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21 pected to achieve permeabilities comparable to latexmodified concrete. In addition, silica fume could be used effectively in thin overlays for bridge desks; however, plastic shrinkage cracking was a concern and proper placing and curing procedures needed to be followed.
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22 tems. All membrane materials had average ratings of between 2.6 and 3.3.
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23 Highway Practice 4 1970)
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24 in use for cathodic protection of reinforced concrete bridge decks is the titanium mesh anode used in conjunction with a concrete overlay. In response to the questionnaire for this synthesis, 24 of the 45 respondents reported that they had tried cathodic protection systems.
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