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Abstract
There was a serious water problem especially in the region close to the sewer treatment plants. Therefore, an effort has been made to utilize the waste water from the sewer treatment plants for building purposes, so that the water problem can be greatly minimized and the waste water can be properly disposed of for good environmental conservation. Slabs in severe curing conditions performed by hospital waste water and sewer waste water.. This article highlights an experimental analysis on the behavior of concrete foundations in severe curing conditions performed by hospital waste water and sewer waste water. The experiment measured ultimate load, first crack load, load-deflection behavior, stiffness and evaluated the crack pattern of twelve reinforced concrete slabs after curing the specimens for 28 days. The results of the test indicate that the use of hospital and sewer waste water could reduce the strength, stiffness and accelerate damage of tested slabs . Mechanical properties such as compressive strength, elastic modulus, flexural strength, etc. were examined by pouring various concrete samples in the element of cubes, cylinders and prisms, etc. and were concluded to be acceptable.
Highlights
Reinforced concrete is a composite material consisting of reinforcing bars made of steel embedded in a concrete volume[1]
The results shown in Table (2) indicate that the components of tested hospital waste water
The ultimate load of slabs was recorded as shown in Table (3)
Summary
Reinforced concrete is a composite material consisting of reinforcing bars made of steel embedded in a concrete volume[1]. Whenever the reinforcement bar is inserted into concrete corrodes, its volume increases with corrosion products [3]. Both the iron oxide and the hydroxide forms have common volumes greater than those of steel. The expansive forces produced by the corrosion of steel cause the tensile crack of concrete. This in turn produces a decline in concrete's serviceability and structural integrity, besides affecting its aesthetics [4]. A local degradation of the passive film on the steel by the chloride ions, and complete loss of passivity by concrete neutralization according to the atmospheric CO2 effect, are the two main factors of corrosion reinforcing bar [5]. The following are the main factors that cause corrosion of the reinforcement bar in concrete
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