What is a concrete moisture meter?

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concrete moisture meter is a pocket tool, usually with a digital reading that is used to measure the amount of water present in the concrete, usually in construction for testing concrete floorboards. These meters are generally one of the two types, surface meters and probe type meters that require a test opening to be performed in the concrete. Surface meters tend to be less useful because they can only provide values ​​that reflect the relative humidity (RH) of concrete very close to the surface of the board, not more than 1 inch (2.54 cm) deep. A concrete humidity meter requires small test holes, but gives much more accurate reading because it can measure RH in the center of the board, which is much more useful. It dries from the surface down, which means that at the moment after pouring the surface will have less humidity than the interior and the most moisture will be on the bottom of the board. This processing stops when the board is covered, usually the floor, but even the urethane coating directly on the concrete itself stops the loss of the moisturebones. The moisture is equal to the covered plate, which means that the moisture extends evenly. The equilibrated board will have a uniform moisture content from top to bottom.

surface meters can measure the moisture content in the concrete slab without the need to drill holes in the board. However, they are only able to read moisture in a part of the plate that is very close to the surface, usually not more than 1 inch (2.54 cm). When dealing with thick concrete plates that are common in building construction, this information is not useful as an indicator of the overall level of moisture throughout the board. Many factors can affect the speed at which the board also dries, which also affects the value of the meter, including the type of cement, the size of the aggregate and how the plate has been labeled or pressed. A surface -type moisture meter can provide a reading that shows that the board is sufficiently dry for installing underfloor covering, but once after installing the floor inYravný board, it can be wet and cause damage to the floor or other problems.

Concrete humidity meter requires a drilling of one or more test holes in the concrete slab. These openings can be very small, not destructive and can be filled if you no longer need. The probe is placed in a test hole, sometimes in a perforated sleeve and gives reading from the inside of the plate. RH boards at a depth of approximately 40% to 50% of the total number will provide a reading that reflects how much moisture will be present in the equilibrium plate. This reading is much more useful in determining whether the plate is dry enough for the floor.