A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Precast Repair of Continuously Reinforced Concrete Pavement
An investigation into the applicability of precast slabs for rapid repair of CRCP is presented. Analytical techniques are used to study loading of repair slabs due to volume change, wheel loads, and lifting, with detailed results presented in several of the appendices. Rapid repair of CRCP with precast slabs appears feasible. Calculations indicate that slabs longer than 7 feet (2.13m) have potential problems with excessive steel stress at the construction joints. These stresses can be controlled with a weakened plane, which causes the concrete to crack at mid-span, thus lowering the stresses. A precast slab can be satisfactorily lifted from four lifting points secured into the slab and situated between 1/5 and 1/4 the span length from each edge of the slab. Steel connections to maintain the continuity of steel reinforcement in CRCP is a critical aspect of the repair. These connections can be made by welding, clamping, or use of commercial rebar connectors. Polymer concrete is a fast setting material which has excellent properties as a repair material for use around these connections. The set time of the material to be placed around the steel connections will, to a large extent, govern the overall repair time.
Precast Repair of Continuously Reinforced Concrete Pavement
An investigation into the applicability of precast slabs for rapid repair of CRCP is presented. Analytical techniques are used to study loading of repair slabs due to volume change, wheel loads, and lifting, with detailed results presented in several of the appendices. Rapid repair of CRCP with precast slabs appears feasible. Calculations indicate that slabs longer than 7 feet (2.13m) have potential problems with excessive steel stress at the construction joints. These stresses can be controlled with a weakened plane, which causes the concrete to crack at mid-span, thus lowering the stresses. A precast slab can be satisfactorily lifted from four lifting points secured into the slab and situated between 1/5 and 1/4 the span length from each edge of the slab. Steel connections to maintain the continuity of steel reinforcement in CRCP is a critical aspect of the repair. These connections can be made by welding, clamping, or use of commercial rebar connectors. Polymer concrete is a fast setting material which has excellent properties as a repair material for use around these connections. The set time of the material to be placed around the steel connections will, to a large extent, govern the overall repair time.
Precast Repair of Continuously Reinforced Concrete Pavement
G. E. Elkins (author) / B. F. McCullough (author) / W. R. Hudson (author)
1979
287 pages
Report
No indication
English
PRECAST CONCRETE PANEL PATCH SYSTEM FOR REPAIR OF CONTINUOUSLY REINFORCED CONCRETE
| European Patent Office | 2019
Precast concrete panel patch system for repair of continuously reinforced concrete
| European Patent Office | 2021
PRECAST CONCRETE PANEL PATCH SYSTEM FOR REPAIR OF CONTINUOUSLY REINFORCED CONCRETE
| European Patent Office | 2019