| Thương hiệu | Proceq |
| Xuất xứ | |
| Bảo hành | |
| Tình trạng hàng hóa | |
| Đơn vị tính | |
| Màu sắc | |
| Tồn kho | Còn hàng |
The TORRENT Permeability Tester is a measuring instrument which is suitable for the determination of the air permeability of cover concrete by a non-destructive method.
It operates under vacuum and can be used at the building site and also in the laboratory.
The essenfial features of the TORRENT method of measure- ment are a two-chamber vacuum cell and a pressure regula- tor which ensures an air flow at right angles to the surface and into the inner chamber. This permits the calculation of the permeability coefficient kT on the basis of a theoretical model.
In the case of dry concrete, the results are in good agreement with laboratory methods. such as oxygen permeability, capil- lary suction, chloride penetration and others. The quality class of the cover concrete is deteimined from kT using a table.
The humidity, a main influence on the permeability, is com- pensated by additionally measuring the electrical resistance p of the concrete. With kT and p, the quality class is obtained from a nomogfain.
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