Preparation device and preparation method of concrete axial tension test pieces

Abstract

The invention discloses a preparation device and preparation method of a concrete axial tension test piece. The preparation device of the concrete axial tension test piece comprises a fixed positioning device with T-shaped conduits, a movable end plate positioning device with T-shaped slide rails, a detachable counterforce baffle plate for providing fixed pressure, circular-arc-shaped brackets with T-shaped slide rails, force transmission end plates, concrete test pieces and manual pushing bolts. The preparation method of the concrete axial tension test piece comprises the following steps of: preparing a concrete core sample; centering the concrete core sample; and compressing and stabilizing to obtain a concrete tension test piece. Due to the adoption of the device and the method, the practical problems of poor manufacturing accuracy, low test success rate and the like existing in the conventional concrete axial tension test piece can be solved; and the device and the method can be used for repeatedly performing a large amount of axial-pulling test on concrete test pieces in laboratories, and can be applied to the preparation of a rock core test sample axial tension test piece in the fields of geological prospecting and the like.

Description

technical field [0001] The invention relates to a preparation device and method for a concrete axial tensile test piece, belonging to the field of concrete material testing and engineering testing. Background technique [0002] Since the axial tensile properties of quasi-brittle materials such as concrete have attracted more and more attention, there is an urgent need for a complete program that can accurately prepare concrete axial tensile specimens. At present, it is not uncommon to mention concrete axial tension test schemes at home and abroad, but there are few mentions about the precise preparation process of concrete axial tension test specimens. Due to the inaccurate preparation of concrete axial tension specimens, it may lead to "eccentric tension" failure of concrete axial tension specimens, resulting in failure in non-concrete areas such as connecting members, and the real axial center of concrete materials cannot be realized. Damaged by force. Therefore, there i...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention proposes a preparation device and method for concrete axial tensile test pieces that can solve practical problems such as poor preparation accuracy and low test success rate of current concrete axial tensile test pieces.

Images