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首页> 美国政府科技报告 >High Early Strength Bonded Concrete Overlay Designs and Construction Methods for211 Rehabilitation of CRCP
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High Early Strength Bonded Concrete Overlay Designs and Construction Methods for211 Rehabilitation of CRCP

机译：CRCp 211修复的高早强粘结混凝土罩面设计与施工方法

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For rehabilitation of concrete pavements, resurfacing with a bonded concrete211u001eoverlay (BCO) may provide significantly longer life and reduced maintenance 211u001ecosts. Two important issues are bonding and rapid reopening of resurfaced 211u001esections. The project objective was to determine a method or methods for 211u001econstructing a bonded concrete overlay under extreme weather conditions in El 211u001ePaso, Texas, that would ensure early opening to traffic and achieve design 211u001erequirements for long-term performance, and to investigate methods of detecting 211u001eand mapping delaminations nondestructively. A BCO test slab was designed and 211u001econstructed for a full-scale test of feasible design and construction 211u001ealternatives. The month of June was selected for the test because severe 211u001eenvironmental conditions were expected. The experimental variables encompassed in 211u001eeight test sections were reinforcement of concrete (plain, polypropylene fiber 211u001ereinforced, and steel fiber reinforced), use of shear connectors (nails and 211u001eanchors), reinforcement, surface preparation, and day or night construction.

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