ASTM D4071-23 pdf free download – Standard Practice For Use Of Portland Cement Concrete Bridge Deck Water Barrier Membrane Systems.
This practice covers liquid applied，preformed，orbuilt-up water barrier membrane systems and their application,overlaid with asphalt wearing courses, for use in the protectionof bridge decks from deleterious effects of deicing salts.Material use and specifications should be adapted to conformto job and user requirements for new construction or existingstructures.This practice is written as a guide for the use ofbridge deck water barrier systems only.
The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.
5. Bridge Design and Specification Consideration
5.1 Proper use of water barrier membranes with asphalt wearing courses requires consideration of certain elements during the design stage of new or existing bridges to be treated and covered with an asphalt wearing course.
5.2 New bridge deck designs must include provision for dead loads including future systems.
5.3 The deck surface finish should be specified to allow proper use of the intended membrane system. Manufacturer’s recommendations for surface finish should be reviewed for guidance on finishing freshly placed concrete or for repair of existing deck surfaces.
5.4 Surface drains should be designed to allow positive drainage to minimize the penetration of water through the asphalt wearing course.
5.5 Joint systems should be designed to provide adequate termination points for the membrane. Membranes should not
be placed over expansion joints. Dams or expansion assemblies should be provided to the height of the asphalt wearing course.
5.6 Curbs or parapets, or both, should be designed for functional terminations.
ASTM D4071-23 pdf free download – Standard Practice For Use Of Portland Cement Concrete Bridge Deck Water Barrier Membrane Systems
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