Topic
Flexural strength
About: Flexural strength is a research topic. Over the lifetime, 52123 publications have been published within this topic receiving 846504 citations. The topic is also known as: bending strength & modulus of rupture.
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TL;DR: In this paper, a constitutive model was developed that includes cyclic rules for loading and unloading, plastic strains, and stiffness and strength degradations of fiber reinforced polymer (FRP) wrapped concrete columns.
Abstract: Confinement by fiber reinforced polymer (FRP) wraps can significantly enhance strength and ductility of concrete columns. Behavior of FRP-confined concrete in uniaxial compression can be characterized by its bilinear stress–strain and unique dilation properties. A number of models have in recent years been developed to capture these characteristics under monotonic loading. None, however, have addressed the cyclic response of FRP-confined concrete. A total of 24 FRP-confined concrete stub specimens were tested in uniaxial compression under different levels of loading and unloading, with different fiber type, wrap thickness, and loading patterns. Based on a regression analysis of test results, a constitutive model is developed that includes cyclic rules for loading and unloading, plastic strains, and stiffness and strength degradations. The proposed model is validated by comparing analytical predictions with experimental results of an independent test series. Good agreement was shown between the analysis and experiments, confirming the ability of the model to predict the cyclic behavior of FRP-confined concrete. The model could be easily implemented in a fiber element model for flexural analysis of cyclic loaded beam-columns in conjunction with a strain gradient approach.
145 citations
TL;DR: In this article, a set of new test data for high strength concrete filled steel tubular (CFST) members subjected to transverse impact is presented, and a finite element analysis (FEA) model is established to predict the impact behaviour of high strength CFST members, and the accuracy of which is then verified by the presented test results.
145 citations
TL;DR: In this paper, a facile approach to fabricate graphene oxide reinforced epoxy resin nanocomposites was developed by transferring GO from water to acetone, which showed significant improvements in flexural strength, flexural modulus, impact strength, and storage modulus.
Abstract: A facile approach to fabricate graphene oxide (GO) reinforced epoxy resin nanocomposites was developed by transferring GO from water to acetone. Three-point bending test, impact test, dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) were used to investigate the mechanical and thermal properties of the nanocomposites. The results showed that significant improvements in flexural strength, flexural modulus, impact strength, and storage modulus were achieved when incorporating ∼1 wt% of graphene oxide. The TGA analysis indicated that the introduction of GO has not demonstrated obvious effect on the thermal stability.
145 citations
TL;DR: The results showed that a combination of mesoporous and nonporous materials can be used to prepare stronger dental materials that may resist hydrolysis and wear.
145 citations
TL;DR: In this article, the authors investigated the strength, fracture toughness and fatigue life of two types of pervious concrete, supplementary cementitious material (SCM)-modified perviouscrete (SPC) and polymer-modified Pervious concrete (PPC), and found that porosity significantly affects compressive strength, but it has little effect on the rate of strength development.
145 citations