The main aim of the present study is to develop, to fabricate and to evaluate a cutting machine for turnip fingers to be used in small and medium production like stainless steel and mild steel were used in fabrication. The machine productivity increased with increased turnip size, slice thickness and cutting speed. The uniformity index increases with increasing turnip size, slice thickness and cutting speed. The cutting efficiency increased from 95.361 to 96.674 and 95.130 to 96.864 % with increased turnip size from small to large, slice thickness from 9 to 12 mm, respectively, while it decreased from 97.524 to 94.716 % with increased cutting speed from 250 to 550 rpm, respectively. The specific energy consumption decreased with increased turnip size, slice thickness and cutting speed. The total cost of slicing machine decreased from 0.
This research aimed to investigate the feasibility of using self-compacting concrete in civil engineering applications as a producing a precast hollow unit. The behavior of the hollow sections cast with self-compacted concrete beneath line-load was evaluated. An experimental work was carried out and a finite element model with ANSYS (version 15) was adopted. A total of fourteen hollow beams were cast and tested. The most variables taken into thought were; the types of reinforcement (reinforced steel bar and steel wire meshes), the types of steel wire meshes (expanded and welded steel wire mesh), number of layers of steel meshes (one layer and two layers), cross section thickness of concrete (40 mm and 60mm), concrete cover thickness (15mm and 20 mm) and also the shapes of cross section (square or circular). Special attention to initial cracking load, ultimate load, deflection, cracking pattern, energy absorption and ductility index were investigated. Good agreement was found compared with the experimental results. Out of this research; this paper presents applications of self-compacted concrete for casting skinny structural hollow members. These members can be used as precast units within the construction of the tunnel to decrease the problems in highway roads due to the difficulty of using crossing bridges particularly for kids and old people which are very useful for developing countries with great economic advantages.
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