![]() Eighteen beam specimens of size 1650×200×150 mm were tested in the investigation. Fiber hybridization was achieved by developing concrete containing a combination of steel and polypropylene fibers. Subsequently, the behavior of steel fiber-reinforced concrete beams was investigated with and without fiber hybridization under flexural and impact loading, followed by a comparison of the results. The study compared the mechanical properties of fresh and hardened HFRC, Steel Fiber Reinforced Concrete (SFRC), and conventional concrete to arrive at the optimum fiber content for improved behavior of concrete by testing 135 specimens. Optimized combinations of different fiber types in concrete can produce a composite with better engineering properties than that with only one type. For optimal response, different types of fibers may be suitably combined to produce HFRC. The addition of fibers to concrete can improve a number of its properties. The knowledge acquisition process consisted primarily of the analysis of documented knowledge found through literature research.This paper focuses on the experimental investigation designed to study the behavior of hybrid fiber-reinforced concrete (HFRC) beams under flexure and impact loading. DASE provides graphics that customize the user interface and an explanation facility. The Analytic Hierarchy Process has been implemented as the overall framework to determine the severity of damage, since it allows judgments and personal values to be represented in a systematic and rational manner. Floor damage classification and restoration guidelines can also be provided, assuming that all of the structural components in a building's floor have been inspected. The expert system, called DASE, identifies the most likely failure modes that may be developed by columns or beams of a damaged building, determines the severity of damage and, suggests immediate actions to take afterwards, such as rehabilitation procedures or tests, to maintain an acceptable local safety level. This paper describes a rule-based prototype expert system developed to assist an engineer engaged in the task of assessing postearthquake damage to structural concrete elements in the task of providing guidance for inspection as well as criteria for evaluation and courses of action to take afterwards. ![]() The assessment of damage of structural concrete elements relies on the engineering judgment of the person in charge of the inspection and evaluation. ![]()
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