Papers by Keyword: Pull-Out Method

Abstract: Structural concrete strength rapid detection methods were analyzed, which mainly include Rebound Method, Ultrasonic-rebound Combined Method, Dirlled Core Method, Pull-Out Method. Technical characteristics, advantages and disadvantages of each method were compared and analyzed. Application of each method was analyzed. Based on current detection technical specification, ultrasonic-rebound combined method for testing concrete strength was analyzed. Actual concrete bridge as a platform for a comparative test, ultrasonic-rebound combined method test was carried out. Problems were put forward and recommendation was made through discussion.

Abstract: Post-embed pullout tests are applied to the concrete cubes of C15-C60. Based on the result of 50 concrete samples, the relationship between pull-out resistance and compressive strength of concrete has been discussed in detail, and the formula used for calculating the concrete strength is given out. Its related coefficients and relative standard can meet the requirement. The simulation method is used on the base of curving failure surface. The paper presents the destruction mechanism of pull-out method in concrete property test, and good correlation between the date of pullout force and cube strength is explained.