Device and method for measuring permeability of steel slag concrete

Abstract

The invention discloses a device for measuring permeability of steel slag concrete. The device comprises a first PVC pipe and a second PVC pipe, the first PVC pipe is sequentially connected with a ball valve and a third PVC pipe through connectors. Two ends of the second PVC pipe are respectively connected with the flow meter and the third PVC pipe through connectors; the flow meter is connected with the water pump, the water pump is connected with the water tank, the test piece is placed in the third PVC pipe, a deflation valve is arranged at the top of the second PVC pipe, and pressure sensors are installed at the two ends of the test piece of the third PVC pipe and are in signal connection with a digital differential pressure gauge; a stepped hole is formed in the upper portion of the third PVC pipe, internal threads are arranged in the stepped hole, a sealing plug is installed in the stepped hole, a preservative film wraps the test piece, a sealing plug is arranged on the test piece wrapped with a preservative film in a sleeving mode, a pressing cylinder is installed on the internal threads of the stepped hole, and the sealing plug is hooped on the test piece through the pressing cylinder. The device provided by the invention has the advantages of small measurement errors, high precision, and simple and fast test piece mounting and dismounting process.

Description

technical field [0001] The invention relates to a steel slag concrete permeability measuring device and method, belonging to the technical field of concrete performance testing. Background technique [0002] Concrete is a complex porous medium material, and its permeability is an important index to evaluate the performance of concrete. The stable flow method calculates the permeability coefficient by measuring the pressure difference and water seepage after steady seepage, and has become a commonly used concrete permeability test method because of its reliable and clear principle. [0003] However, the existing devices and methods for measuring the permeability of concrete by the steady flow method are not perfect enough. In the prior art, people use air compressors and pressure regulators to realize the water pressure of the concrete permeability testing device can be adjusted, but it still needs manual water replenishment on a regular basis, and the operation is complicat...

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Problems solved by technology

[0004] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a steel slag concrete permeability measurement device and method, which solves the problems of complicated operation and large measurement error of the existing concrete permeability measurement device

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