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Long-Term Performance of Polymer Concrete for Bridge Decks (2012) / Chapter Skim
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Pages 28-33

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From page 28...
... • The majority of states use contractors for installation, but 10 states use their own forces for at least some installations. • New Mexico, Georgia, and LaGuardia Airport require warranties ranging from 1 to 10 years.
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From page 29...
... 27 T A B L E 1 S U M M A R Y O F S T A T E S A N D P R O V IN C E S S U R V E Y S ta te N o.
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From page 30...
... 28 Ta bl e 1 C on ti nu ed f ro m p .2 7 S ta te N o.
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From page 31...
... 24, 1992, http://www.ohiopavementselection.org/construction/OCA/ Specs/SSandPN2002/pn5140402for2002.pdf. Oregon Section 00557 -- Premixed Polymer Concrete Pavement Overlays, http://www.oregon.gov/ODOT/HWY/SPECS/docs/ 08specials/Updates/01-14-10/SP557.pdf.
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From page 32...
... premixed polyester TPO as needed to restore ride quality; the inevitable deterioration of the TPO is usually blamed on the contractor; • Moisture in deck: excessive moisture reduces bond strength. Recommendations Contractor recommendations include that -- • Bidders be prequalified for TPO experience; • Resin manufacturer's representative always be present, especially if warranty is required; Texas Multiple-Layer Polymer Concrete Overlay, ftp://ftp.dot.
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From page 33...
... Problems Encountered Material suppliers observed the following problems that may lead to poor performance of TPOs: • Poor deck condition; • Cracking and delamination of deck; • Inadequate concrete cover on steel; • Bidding followed by requirement that they must provide technical support on site; and • Obtaining all three surface preparation requirements: clean, dry, and sound. Recommendations To improve the quality of TPOs, material suppliers recommend that -- • Technical representatives be trained; • Manufacturer's representative be on site to oversee work; • The deck be in good condition; • Deck be clean and dry; • Deck cleaning texture be specified as ICRI CSP 7, but can accept 6; • Multiple-layer TPOs be used for epoxy systems; • Minimum tensile elongation be 50% for epoxy systems; • Aggregate have a Mohs hardness of 7; • AASHTO Task Force 34 recommendations (6)
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Key Terms

  • bond strength
  • skid resistance
  • polymer concrete
  • guardia airport
  • portland cement

  • laguardia airport
  • tensile elongation
  • using epoxy
  • bridge deck
  • polyester overlay


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