The Biggest Myth About cement products Exposed
As more is being taught about cements and the moisture in concrete and the best way in testing the condition of the slab. When it comes to concrete, many people have some myth in the testing of concrete moisture. Cement products are used widely for every construction and this has given rise to cement manufacturers venturing into the making of concretes. So today, we will explore some myths which has cost many millions a result of flooring failures.
Concrete slab can be accurately estimated
A procedure that has been popularly used in calculating the amount of time needed for a slab to dry off is by allowing it dry in a space of one month. This method gives you a rough sketch of what is expected. This procedure as perfect as it sounds, overlooks other variables, which can impact the time frame for a slab to dry. Moisture moves through concrete in order to vaporize and how easy this movement is done has substantial influence on the drying times. There is a need for the moisture to flow via capillaries in the concrete. The number and size of capillaries is dependent on the aggregate, unique mix of cement and other admixtures used for that particular concrete slab.
Old concrete is already dry.
A concrete that has been around for years and with installed floors on it, is quite dry enough with new floors installed on it. Sounds right, but this is virtually wrong. Old flooring systems make use of products that were moisture resistant. Apart from this, there is greater environmental impact on the old floors when compared to products used today. What this practically mean is that, old slabs may hold on to moisture, which can’t move out from the older flooring. This moisture has the tendency of creating chaos on the new floor. External moistures such as weak vapor barrier or leak plumbing can also have an effect on slabs for years. Because of the reasons stated above, it is not advised to make the assumption that older slab is adequately dry enough for your floor application.
The floor will hold because the top of the concrete is dry
Many studies has been done and showed that the dryness of the concrete slab surface won’t essentially show the moisture condition of the entire slab. As the moisture goes through the slabs and disappears at the surface, a wetness slope perpetually forms. As a result of the slop from the moisture, any concrete moisture test which measures only the surface, won’t give an accurate result. The level of the moisture for slabs is very important because it is the point of equilibrium. To get a reliable assessment and accurate measurement is by taking measurements deeper within the slab, and RH tests are exactly designed to do just that.
Chris Vic in this write-up looks at some of the myth that many have in regard to cement manufacturer and in the production of concrete slabs. He further talked about how Cement products are used widely for every construction works.