Experimental Study on Concrete Deck Pavement with Basalt Reinforcement
To investigate the flexural behavior of basalt reinforcement replacing traditional steel bars in bridge deck pavement layers,and to provide reference for this type of reinforced concrete pavement layer with basalt reinforcement.Both 7 basalt reinforced concrete bridge deck pavement test beams and 3 ordinary reinforced concrete beams were prepared by conducting four point loading tests,to study the effects of steel bar diameter,quantity,and pavement layer thickness on the flexural behavior of the test beams.By only changing the type of longitudinal reinforcement in the pavement layer,the yield load of rectangular beams with basalt reinforcement in the pavement layer increased by 1.23％～8.96％,and the flexural bearing capacity increased by 0.6％～2.65％.For the same reinforcement type,the flexural capacity of ordinary reinforced concrete beams increases by 13.86％,and the flexural capacity of basalt reinforced concrete beams increases by 16.17％as the steel bar diameter increased to 10mm.The change in the number of longitudinal bars in the pavement layer has a relatively small effect on the cracking load and flexural capacity of the beam.By only increasing the thickness of the pavement layer,the maximum cracking load of the basalt reinforced concrete bridge deck pavement test beam increased by 50％,the maximum yield load increased by 14.47％,and the maximum ultimate load increased by 11.43％.Under certain conditions of pavement thickness and the number of longitudinal bars,replacing ordinary steel bars with basalt bars in the pavement layer can not only enhance the corrosion resistance of basalt bars,but also improve their flexural capacity.
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