FIELD: manufacturing building materials using cement.
SUBSTANCE: technology is related specifically to the quality control of cement and can be used as an express method for determining the activity of cement. The method for determining the activity of cement according to a pre-built calibration dependence consists in the fact that the test samples are made in the form of pressings of the tested cement powder, a drop of the working solution is applied to the samples, the wetting angle is measured, its cosine is calculated, and according to the pre-built calibration dependence of the compressive strength, determined for beams of cement of different grades, a linear equation is calculated from the value of the cosine of the contact angle of wetting the surface of cement powders, which determines the value of the activity of the tested cement.
EFFECT: developed method allows to obtain data on the actual value of cement activity in an expeditious manner.
3 cl, 1 dwg, 1 ex
| Title | Year | Author | Number |
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