The Presumption Of Shear Strength Of Concrete Compressive Strength Method Research

With the rapid development of national economic development, as well as the national infrastructure is relatively stable, civil engineering is the reinforcement and transformation from strongly built gradually, the process of how the new construction, rebuilding engineering of concrete and reinforcement engineering for scientific and reasonable testing and evaluation has become an important problem in the construction industry. Now we use the way of testing the basic can be achieved directly in the field of concrete of the indicators for testing, but also there are many detection methods in use. But the commonly used concrete nondestructive testing technology has certain limitation, rebound method is simple, but the measurement is based on the presumption of concrete compressive strength according to the concrete surface hardness, the age limit, and the precision is low, often difficult to accurately reflect the internal strength of concrete structure; Core method of high precision, but the drill core samples is larger, more serious damage to the original structure, difficult to repair. So make concrete nondestructive testing technology to simple operation, high precision, small damage to the original structure in the direction of development has become the important subject to be solved in.This article explores a new kind of concrete- concrete shear strength test method to estimate the compressive strength, the level of shear method and in situ single shear method determination of concrete compressive strength. Because to reduce concrete detection to the destruction of the original structure to reduce the size of the drill core samples, when the core sample sizes are decreased, the discreteness of concrete compression test for core samples, so that can not reflect the actual strength of the concrete. So this topic focuses on the shear strength of compressive strength of concrete strength curve, and cut method and in situ single shear method against the new detection technology of concrete compressive strength are related.The results show that the shear strength and compressive strength of concrete has good correlation, by in situ single shear shear method and the method of compressive strength of concrete shear strength of concrete strength curve of error is small, the correlation coefficient is higher, has a good fitting.Through the study of shear method and the influence factors of in-situ single shear test curves was test, can consider environmental impact factors in the practical engineering of strength curve for appropriate correction, make the results more accurate.