destruction, recording core samples (4) load values F at failure, and the end portion to measure the core sample at a distance L1 damage; c, the diameter D, the load value F, the distance L1 is substituted into flexural strength ft = formula obtained structural concrete flexural strength. ...
In this paper, the prediction of flexural strength was investigated using machine learning methods for concrete containing supplementary cementitious materials such as silica fume. First, based on a database of suitable characteristic parameters, the flexural strength prediction was carried out using linear...
In 1979, Mattock' presented a procedure for calculating the flexural strength of prestressed concrete sections on an HP-67/97 programmable calculator. His procedure consisted of the theoretically exact "strain compatibility" method and a power formula for modeling the stress-strain curve of ...
In order to study the mechanism of strengthening the concrete beams with CFRP,the influence of secondary loads on the reinforcement was discussed,the complete flexural-course of the reinforced concrete beams was analyzed,the formulae for calculating the ultimate loads and the cracked loads were presen...
(three) concrete flexural strength (FCF) concrete flexural strength (according to three points loading: three points loading: L=450mm (four) the factors that affect the strength of concrete 1. factors of raw materials Concrete strength theory f, Cu, 28 crushed stone: =0.46, =0.07 macadam: ...
Strength of RC Members Using High Strength Concrete and Strength Formula for RC Members Using Ordinary Strength Concrete : (Part 2)Two dimensional deformation of R/C column 鈴木 敏郎 , 滝口 克己 , HOTTA Hisato , 今井 敬 , 野田 晃央 , 木村 克次 , 宮下 真一 Summaries of technical papers...
In order to study the calculation method of stiffness of high-strength reinforced concrete beam,the bending behavior of reinforced concrete beams with HRB500 reinforcement bars were analyzed based on the tests of 15 flexural reinforced concrete beams with HRB500 reinforced concrete and 2 reinforced con...
The formulae are of the form ft=kfCn where n and k are constants. For flexural tensile strength the k varies from 0.33 to 0.94 and n from 0.5 to 0.67 [2]. Although, most codes of practice recommend a square root function (n = ½) to relate flexural strength with compressive ...
Moreover, it was concluded that results obtained from three-point bending tests significantly differed from empirical formulas for the calculation of the flexural tensile strength of fiber-reinforced concretes with dispersed steel fibers present in the literature. As a result, the new formula determined...