Developing a Higher Performance and Less Thickness Concrete Pavement: Using a Nonconventional Concrete Mixture

Abstract

During the last three decades, concrete pavement or rigid pavement became a widely used alternative of flexible pavement (asphalt pavement) at freeways and highways with high traffic of heavy vehicles, due to its durability, long life, and less need of maintenance; however, the cost of construction for rigid pavement is very high compared to asphalt pavement. Developing a new concrete mixture to increase the performance and reducing the required thickness of concrete pavement became an important issue in rigid pavement design in order to reduce the high construction cost. In this study, a new concrete mixture was developed using specific amounts of steel fibers and steel slag (as a supplementary cementing material to replace a part of the cement). Several mixtures with different concentrations of fibers were prepared, and samples were tested for workability, early flexural strength, and ultimate flexural strength. The results showed that the new concrete mixture could achieve an increase in flexural strength between 48.9% and 50.5% compared to normal concrete mixture without steel fibers and steel slag, with minimum acceptable workability, and therefore, the required pavement thickness could be decreased by more than 24%.

Effect of asphalt pavement construction on the environment of Ethiopia

“…Comparing concrete pavement and asphalt pavement it is found that concrete pavement is more expensive but suitable for a higher traffic intensity. Because concrete pavement requires lower maintenance frequencies and a less amount of thickness of concrete is required for higher traffic intensities [27].…”

Contribution of Steel Fibers on Ductility of Confined Concrete Columns

“…Several researchers have carried out the need to increase displacement and curvature ductilities [3][4][5][6][7][8][9]. On the other hand, in research that seeks to increase the stress-strain in concrete, some of these researchers have attempted in various ways [10][11], including by applying reinforcement using steel fiber to the unconfined concrete members [12][13][14][15][16] and some to the confined concrete members [17][18][19] the results of this study indicate an increase in the stress-strain of concrete due to the use of steel fiber.…”

Causes of Disputes in Palestine

“…Construction industry is the vital sector in Palestine. It is considered an essential requirement for economic activities [1,2].…”