A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Research on Hydraulic Bursting of Concrete and Rock
This research demonstrates the feasibility and optimizes the process of hydraulic bursting of concrete and rock. The project has demonstrated a new method for safely and efficiently disintegrating concrete and rock with low noise and low dust, for potential application in demolition or excavation in urban areas where blasting may not be allowed. The method involves drilling holes approximately 1.5 inches (38mm) in diameter to depths of about 6 inches (150mm) into the face, inserting a packer-injector unit and injecting water at pressures of 1000 to 2200 psi which causes the brittle material to fail in tension. Splitting of sandstone and Indiana limestone parallel to the drillhole was achieved. It was found that cracks could be initiated transverse to the drillhole and cones of concrete removed by applying a tension force to the packer prior to water injection. This conical failure mode is also attainable by tension alone on a rock anchor. A design concept for a tension fracture system is presented.
Research on Hydraulic Bursting of Concrete and Rock
This research demonstrates the feasibility and optimizes the process of hydraulic bursting of concrete and rock. The project has demonstrated a new method for safely and efficiently disintegrating concrete and rock with low noise and low dust, for potential application in demolition or excavation in urban areas where blasting may not be allowed. The method involves drilling holes approximately 1.5 inches (38mm) in diameter to depths of about 6 inches (150mm) into the face, inserting a packer-injector unit and injecting water at pressures of 1000 to 2200 psi which causes the brittle material to fail in tension. Splitting of sandstone and Indiana limestone parallel to the drillhole was achieved. It was found that cracks could be initiated transverse to the drillhole and cones of concrete removed by applying a tension force to the packer prior to water injection. This conical failure mode is also attainable by tension alone on a rock anchor. A design concept for a tension fracture system is presented.
Research on Hydraulic Bursting of Concrete and Rock
W. C. Cooley (author)
1978
41 pages
Report
No indication
English
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