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... can be seen in the chemical composition and physical characteristics listed in Table 4, Super-Pozz is an extremely fine, light colored powder composed primarily of amorphous calcium-silicates and aluminates. From its chemical analysis, Super-Pozz will meet the Class F fly ash requirement of BS 3892, but physically the product is unique with regards to its particle size distribution. ...Context 2
... can be seen in the chemical composition and physical characteristics listed in Table 4, Super-Pozz is an extremely fine, light colored powder composed primarily of amorphous calcium-silicates and aluminates. From its chemical analysis, Super-Pozz will meet the Class F fly ash requirement of BS 3892, but physically the product is unique with regards to its particle size distribution. ...Similar publications
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Citations
This paper deals with the impact study and energy absorption properties of ferrocement slabs and use it to design of runways airports. For these study,18 different ferrocement slabs of size 400mm X 400mm X 25mm were cast with alteration in the combinations of mesh layers and test results are analyzed to find the different crack patterns. The slabs were cast with weld mesh, expanded mesh and woven mesh. The impact load testing has been performed after the slabs have been heated in the oven for 24 hours at a temperature of 50°C and 100 °C. The impact loading was applied to the specimens by dropping a 5 kg steel ball from a height of 1 m at the center of slabs. The impact energy at initial cracking stage and at failure was determined for all the slabs. The results indicated that higher energy absorption, maximum numbers of blows and maximum displacement at last blow is achieved in slabs of combination of 2 layers of woven mesh and 4 layers of welded mesh at temperature of 50°C as they are effective in controlling the developed cracks. Experimental results are then compared to analytical models using (ABAQUS) programs, it was observed that slabs of combination of 2 layers of woven mesh and 4 layers of welded mesh at temperature of 50°C had maximum numbers of blows, higher energy absorption, and maximum displacement at last blow. In addition, slab of combination of 1 layer of welded mesh at temperature of 100°C showed a lower numbers of blows, energy absorption, and Displacement. The average percentage of the first crack loads of the tested slabs between the experimental results and the finite element results is 5 %, while the average percentage of the ultimate loads of the tested slabs between the experimental results and the numerical results is 5%. In addition, the average percentage of the maximum displacement of the tested slabs between the experimental results and the numerical results is 5.8%. Therefore, there is a good agreement between experimental and numerical results.
