Establishment method of concrete compression strength curve

Abstract

The invention discloses an establishment method of a concrete compression strength curve. The establishment method of the concrete compression strength curve comprises the following steps: adopting a new standard ultrasonic rebound comprehensive method to detect concrete strength, and establishing a locally dedicated curve of the concrete compression strength detected by the ultrasonic rebound comprehensive method through experiments and statistical analysis of data so as to obtain an ultrasonic rebound detected strength regression formula. The locally dedicated curve for the concrete compression strength which is legally detected by the local ultrasonic rebound comprehensive method is established; the curve is more reliable than the nationally unified strength measurement curve, and significant for increasing the detection level; the curve shows a good linear relation with a sound velocity by a level detection method; furthermore, by the level detection method, in the practical application, only one side is detected to avoid the difficulty that centering is not accurate and the other side cannot be tested, and the establishment is better in operation; the detected flat detection sound velocity is corrected in proportionality coefficient, and then substituted in the locally strength measurement formula to presume the strength value, so that the problem that the strength of the concrete member is detected by the level detection method is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a method for establishing a concrete compressive strength curve. Background technique [0002] At present, the country adopts a unified ultrasonic rebound method to test the concrete compressive strength curve. However, due to the great differences in raw materials, climatic conditions and construction techniques in different regions, the strength value derived from the national strength measurement curve in each region is different from the actual value. There is a large difference between the strength values, so the establishment of the strength measurement curve by the local comprehensive method has obvious practical engineering significance and practical application value. Contents of the invention [0003] The object of the present invention is to provide a method for establishing a concrete compressive strength curve, aiming at establishing a local comprehens...

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Problems solved by technology

[0002] At present, the country adopts a unified ultrasonic rebound method to test the concrete compressive strength curve. However, due to the great differences in raw materials, climatic conditions and construction techniques in different regions, the strength value derived from the national strength measurement curve in each region is different from the actual value. There is a large difference between the strength values, so the establishment of the strength measurement curve of the local comprehensive method has obvious practical engineering significance and practical application value

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