الفهرس | Only 14 pages are availabe for public view |
Abstract The government aims now to study some of the different systems to construct residential buildings with economical cost. These systems include precast concrete slabs, precast prestressed concrete slabs such as Hollow Core slabs, Glass Reinforced Concrete slabs and Sandwich Panel slabs system. Fire behavior of concrete is linked to the temperature-dependent material properties. Since the thermal diffusivity is rather low, compared to steel, strong temperature gradients are usually generated within fireexposed concrete members. Together with the high thermal inertia, this means that the core region may take a long time to fire. In this investigation, an experimental program has been made to study the effect of high temperature and fire on some items such as temperature, concrete cover, cracking load, cracking patterns and mode of failure as well as the ultimate failure load on different R.C. slabs system. The test specimens consist of twelve slabs; four slabs are from reinforced concrete, four slabs are from Sandwich panels system, two from Glass Reinforced concrete system and the last two are from Hollow core slab system. The experimental program consists of testing twelve slabs had an overall width, length and depth of 1200 mm,1200 mm and 120 mm respectively. The slabs were simply supported with a clear span of 1100 mm. The type of reinforcement of slabs is different from each other.The government aims now to study some of the different systems to construct residential buildings with economical cost. These systems include precast concrete slabs, precast prestressed concrete slabs such as Hollow Core slabs, Glass Reinforced Concrete slabs and Sandwich Panel slabs system. Fire behavior of concrete is linked to the temperature-dependent material properties. Since the thermal diffusivity is rather low, compared to steel, strong temperature gradients are usually generated within fireexposed concrete members. Together with the high thermal inertia, this means that the core region may take a long time to fire. In this investigation, an experimental program has been made to study the effect of high temperature and fire on some items such as temperature, concrete cover, cracking load, cracking patterns and mode of failure as well as the ultimate failure load on different R.C. slabs system. The test specimens consist of twelve slabs; four slabs are from reinforced concrete, four slabs are from Sandwich panels system, two from Glass Reinforced concrete system and the last two are from Hollow core slab system. The experimental program consists of testing twelve slabs had an overall width, length and depth of 1200 mm,1200 mm and 120 mm respectively. The slabs were simply supported with a clear span of 1100 mm. The type of reinforcement of slabs is different from each other. The experimental program is divided into two phases, two slabs from RC slab system and the sandwich panels were tested as a control slab and the other two slabs were loaded while exposed to fire and for the Glass Reinforced concrete and the Hollow core slabs only one slab was considered as a control slab and the other one is loaded while exposing to fire. |