Title page for ETD etd-04182009-041358

Type of Document Master's Thesis
Author Galagedera, Nandadeva Lalith
URN etd-04182009-041358
Title Integrity and effectiveness of standard preformed membranes placed on concrete bridge decks
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Weyers, Richard E. Committee Chair
Al-Qadi, Imadeddin L. Committee Member
Drew, Donald R. Committee Member
Walker, Richard D. Committee Member
  • Concrete bridges
Date of Defense 1991-09-09
Availability restricted

Waterproofing membranes have been used on bridge decks for almost three decades in order to prevent chloride ingress into concrete. However, the performance of these membranes have yet to be adequately evaluated. Therefore, this research was carried out primarily to evaluate the integrity and effectiveness of standard preformed membranes placed on concrete bridge decks.

The actual conditions of a bridge deck were simulated in the laboratory using scaled-down reinforced concrete specimens. Forty-eight outdoor and twelve indoor specimens were cast. Three types of standard preformed membranes (Bithuthene 5000, Royston lOA, and Protecto Wrap M400-A), punctured with holes of various sizes and frequencies per unit area, were placed on the specim~ns. All of the specimens were overlaid with 2.5 inches of hot-mix asphalt, except four outdoor (control) specimens and three indoor specimens.

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