Overview
In-situ double shearing instrument is a special instrument used to detect the shear strength of building masonry. The instrument is a small hydraulic device that uses the piston to rise to push the cover plate to generate force on the block to detect the shear strength of the masonry, so that the upper and lower surfaces of the block are shearing. The shear strength of the masonry is calculated by measuring the force when the block is shearing. The test results are intuitive and the detection part is partially damaged.
Features
1. The instrument has novel structure, small size, light mass and convenient operation.
2. Adopting a manual pump loading cylinder, the operation is simple and convenient, and the interchangeability is strong.
3, digital display pressure gauge, can directly read the shear force.
Principle
Press the manual pump to press the handle, the hydraulic oil is communicated with the digital pressure gauge all the way through YouTube, and the other way enters the double shearing instrument to push the piston up, and the piston pushes the cover plate to apply thrust to the block. With the increase of the thrust on the block, the upper and lower sides of the block are shearing, and the oil pressure quickly decreases back to zero, and the piston returns under the action of spring force. The digital pressure gauge records the pressure value at this time, and the shear strength of the masonry can be calculated by calculating.
Steps
1. Press the manual pump pressure handle
2. The hydraulic oil is connected to the digital pressure gauge all the way through YouTube, and the other way enters the double shear meter to push the piston up
3. The piston pushes the cover plate to apply thrust to the block
4. As the thrust on the block increases, shearing occurs on the upper and lower sides of the block
5. At this point, the oil pressure rapidly decreases back to zero, and the piston returns to position under the action of spring force
6. The digital pressure gauge records the pressure value at this time
7. The shear strength of the masonry can be calculated
