Iris Publishers Civil Engineering Open Access Journals

Osama K Adwan |  An Experimental Investigation of Carbon Fiber Plates Used for High Strength Reinforced Concrete Beams Research Article Carbon fiber plates (CFPs) have been used sufficiently to strengthen reinforced concrete structures and is becoming an increasing familiar approach amongst structural engineers. In this research investigation, four-point bending flexural tests were carried out to four full-size High Strength Reinforced Concrete (HSRC) beams without CFPs and four full-size HSRC beams strengthened with CFPs. All beams were subjected to short term static loads. The experimental test results presented herein showed that the use of CFPs had remarkable effects on the ultimate carrying capacity and the structural behaviour of all beams tested. In addition, the stiffness of RC beams strengthened with CFPs have increased significantly. Osama K Adwan article from Iris Publishers The use of Carbon Fibre Polymer (CFPs) laminates is one of repair and/or strengthening methods wi...

Osama K Adwan |  Quality Control of Concrete in the Southern Region of Kingdom of Saudi Arabia Using Local Materials Research Article A common concern amongst civil engineers is producing a good quality concrete on-site. This paper reports results of a study carried out to examine the quality of normal strength concrete production in the southern region of Kingdom of Saudi Arabia (KSA) made from local coarse aggregate namely Basalt. As all data were analyzed and examined statistically using Chebyshev’s theorem and the Statistical Empirical Rule (SER) method presented herein. It is concluded that, the normal distribution of all test results -in terms of the quality of concrete mix- was strongly agree with Chebyshev’s theorem and ACI 318-14 section 5.6.3. In addition, these results were considerably better than the Statistical Empirical Rule (SER) method. Overall, these concrete mixes, in this investigation, with 28 days compressive strength of 35 MPa can be used confidently in concr...