I. Overview
The thermal conductivity of concrete is one of the main thermal characteristics of the concrete, the main symbol of the identification of the thermal conductivity properties of concrete.Recent years, with the introduction of building regulations in the field, our quality of building more and more attention.Precise determination of the thermal conductivity for the road works, bridge engineering, building engineering, dams engineering and scientific research in various fields has important significance.

The Company in accordance with the D/T5150-2002 "hydraulic concrete testing procedures for design, manufacturing concrete thermal conductivity detector is indispensable equipment of various hydraulic laboratory and detection units.

DRM-II concrete thermal conductivity detector characteristics: simple device, high accuracy and test speed about ten minutes (time trial), can simultaneously measure the thermal conductivity of the material in the first test, the heat storage coefficient, thermal diffusivityand specific heat, and the measurement of the thermophysical properties of different moisture state.

Second, the main technical performance
1, the range of applications:
This instrument is suitable for the determination of the homogeneous plate-dry or different moisture conditions, jelly, powdered materials, thermal conductivity, thermal diffusivity and specific heat.The thermal conductivity of the material being tested range 0.001 ~ 1.7w/mk
2, the power supply ~ 220V, 50HZ
Dimensions (L × W × H) 600 × 400 × 1520 (mm)
4, working conditions
10 ~ 35 ℃ ② ① ambient temperature ≤ 80% relative humidity
③ room temperature stability of ≤ ± 1.5 ℃
5, measurement accuracy ± 5%
6, DRM-II connected to a computer, computer automated test, data printout.Provide a set of software
Third, the basic principle of concrete thermal conductivity detector
DRM-type thermal conductivity detector is based on non-steady heat conduction principle is based on heating in a short period of time in the experimental material change in the temperature of the experimental material, can be calculated according to the characteristics of the change, the solution of the equation of heat conduction, the test materialthe thermal conductivity of the thermal conductive coefficient and specific heat.