Purpose:

Used to measure the free shrinkage deformation of concrete at any time after self forming, and can also be used to measure the self shrinkage deformation of early aged concrete under unconstrained conditions of moisture exchange with the outside world.

Execution standards:

Standard Test Method for Long term Performance and Durability of Ordinary Concrete（GB/T50082-2009）Non contact method;

Standard Test Methods for Fiber Reinforced ConcreteCCES 13：2009；

characteristic:

1AdoptingUSBSerial communication can be connected to a computer, and the computer software has all the functions of the lower computer. In the event of a screen shutdown or malfunction, the computer can operate and measure normally, while also achieving a large number of functions that the lower computer cannot achieve.

2Using large-diameter eddy current displacement sensors to measure shrinkage has the characteristics of high testing accuracy and large range.

3The displacement sensor bracket is finely crafted, easy to install, and has precise and fast zero position adjustment.

4The characteristics of easy and stable target fixation, accurate measurement, and multiple repeated uses.