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- W35126388 abstract "A computer program--CRCP-2--for the analysis of load, temperature, and shrinkage effects on a continuously reinforced concrete pavement is presented. The transverse cracking of continuous pavements is the result of the restraint of the pavement slab to dimensional changes induced by internal and external forces. The formation of transverse cracks can be attributed to two distinct and basic mechanisms: (a) the internal forces associated with decrease in temperature and drying shrinkage, and (b) the externally induced stress caused by wheel loads. The CRCP-2 computer program combines the stress caused by internal forces and the flexural stress under wheel load. The internal stress is determined by using the one-dimensional axial structural model that simulates the mechanistic behavior of the composite slab. The wheel-load stress can be determined either externally by slab-analysis methods or internally within the program by using the Westergaard equation for interior loading and inputting the magnitude of the wheel load, the wheel-base radius, and the modulus of subgrade. A series of problems is solved by using the CRCP-2 computer program. The results show that external load, when combined with internal forces, induces more cracks to develop and that both steel stress and crack width decrease as crack spacing decreases. The function of steel reinforcement in continuously reinforced concrete pavement is to control crack spacing; higher steel percentage means higher restraint to the concrete, which causes more cracks to develop. The function of the slab thickness is to resist the tensile stress under wheel load; thicker slab usually means wider crack spacing. It is concluded that the inclusion of both wheel load and internal forces makes it possible to predict more realistically and more accurately the actual crack spacing, the crack width, and the steel stress in the pavement system and the slab thickness and the steel percentage must be properly designed to (a) withstand the internal forces developed from restrained-pavement volume changes, (b) keep cracks tightly closed, and (c) avoid excessive cracking." @default.
- W35126388 created "2016-06-24" @default.
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- W35126388 date "1978-01-01" @default.
- W35126388 modified "2023-09-28" @default.
- W35126388 title "ANALYSIS OF LOAD, TEMPERATURE, AND SHRINKAGE EFFECT ON CONTINUOUSLY REINFORCED CONCRETE PAVEMENT" @default.
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