Papers by Keyword: Strength Curve

Abstract: This paper mainly introduces the strength curve of Yunnan regional standard for Technical specification for testing Compressive Strength of Masonry Mortar by Penetration Resistance Method. Furthermore, it researches the distinction in applicability and the accuracy between Yunnan regional and the national specification.

Abstract: Featuring for non-linear stress-strain relation, the behavior of thin-wall plates differ widely from stainless steel to carbon steel, which plays a basic role in relevant researches. This paper describes the development of FE models for analyzing stainless steel plates in compression which is based on the existing results of Rasmussen’s test, as well as the strength curve achieved by such advanced FE models. The explicit strength equations and design method are proposed for determining the local buckling strength of stainless plate and cold-formed square and rectangular hollow section in compression. It is shown excellent agreement with test results achieved by using Quach’s model as stress-strain relations in FE models. The proposed design method also exhibits reliable results, which could be used in structural design of stainless steel plates in compression.

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.