191 research outputs found
Mechanical properties and ductility behavior of ultra-high performance fiber reinforced concretes: Effect of low water-to-binder ratios and micro glass fibers
This experimental work investigates the mechanical performance and ductility behavior of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) containing high volume of micro-glass fibers (MGF). The influence of various volume fractions of MGF and two water-to-binder ratios (w/b) are investigated. These w/b ratios are 0.12 and 0.14. Based on these ratios, two groups of UHPFRC mixes were prepared and each group include seven mixes made with 0%, 0.5%, 1%, 1.5%, 2%, 2.5%, and 3% MGF volume dosages. In total fourteen mixes were examined for the mechanical properties such as compressive strength, splitting tensile strength, modulus of elasticity, flexural strength; and the ductility behavior. It was concluded that lower w/b resulted in better mechanical performance. Also, the mixes containing 1.5% to 3% of MGF, resulted in the highest compressive strength reaching up to 160 MPa. Furthermore, the results indicated that no more strength enhancement can be achieved beyond 1.5% MGF
Assessment of fresh and hardened properties of concrete using supplementary cementitious materials
AI-Decision Support System Interface Using Cancer Related Data for Lung Cancer Prognosis
Until the beginning of 2021, lung cancer is known to be the most commoncancer in the world. The disease is common due to factors such as occupationalexposure, smoking and environmental pollution. The early diagnosis andtreatment of the disease is of great importance as well as the prevention ofthe causes that cause the disease. The study was planned to create a webinterface that works with machine learning algorithms to predict prognosisusing lung cancer clinical and gene expression in the GDC data portal
Transport properties based multi-objective mix proportioning optimization of high performance concretes
COVID-19 and post-poliomyelitis syndrome: coincidence?
Although severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is a novel virus, many central and peripheral nervous system manifestations associated with coronavirus disease-19 (COVID-19) infection have been reported. Beyond the neurologic manifestations, we may still have much to learn about the neuropathologic mechanism of SARS-CoV-2 infection. Here we report a case of post-poliomyelitis syndrome (PPS) related to COVID-19 and attempt to predict the possible pathophysiologic mechanism behind this association.</jats:p
COVID-19 and post-poliomyelitis syndrome: coincidence? = Covid-19 és post-polio szindróma: véletlen egybeesés?
Although severe acute respiratory syndrome coronavirus-2
(SARS-CoV-2) is a novel virus, many central and peripheral nervous system manifestations associated with coronavirus disease-19 (COVID-19) infection have been reported. Beyond the neurologic manifestations, we may still
have much to learn about the neuropathologic mechanism
of SARS-CoV-2 infection. Here we report a case of postpoliomyelitis syndrome (PPS) related to COVID-19 and
attempt to predict the possible pathophysiologic mechanism behind this association
Fracture behavior and mechanical properties of concrete with artificial lightweight aggregate and steel fiber
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