Or if you want to test a larger area, take several samples and blend them together. Using the trowel, break up the clods. Don’t use your bare fingers — they can influence the pH of the soil and change your test. Set the soil aside to dry. After it’s dry, again use the ...
Test MethodsThe article provides information on how to moisture test concrete floors. Concrete with a higher water-to-cementitious material ratio gives off proportionately more moisture simply because there is more free moisture...
Permeability test showing the depth of water penetration. Described in detail in BS EN 12390-8 and DIN 1048-5, water under constant high pressure is applied to one face of a concrete sample for a period of 72 hours. When the test is completed, the specimens are split open ...
Whether cleaning a concrete driveway or tackling stains in a garage, using the right cleaning supplies can help concrete look its best.
Did you know you can be burned by concrete? How do you treat such an injury? Concrete is the alkaline chemical used to make sidewalks and the structure of buildings. Something is alkaline when it has a pH higher than 7. Concrete has a pH closer to between 12 and 13, and is characteri...
The finish also continues to have an uneven, or "crazed," appearance after washing with a mild pH cleanser, both when it is wet and after drying. The construction contractor believes that the concrete floor was installed correctly to accept a stain, because it was allowed to cure about six...
can be a great way to remove algae by forcefully spraying it from the surface. Connect the pressure washer to your hose and use it according to the manufacturer's directions. Test the sprayer on an inconspicuous spot to ensure the high water pressure will not damage the concrete. Stand a ...
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of stains, but it can react with concrete sealers and dyes. This is why it's important to test cleaners like bleach on a small, hidden area of the countertop. If the bleach causes any damage, you'll know not to use it on the rest of your countertop and to try another cleaner ...
If you collected lists of techniques for doing great work in a lot of different fields, what would the intersection look like? I decided to find out by making it. 要在一个领域取得伟大成就,所需的方法与技巧足以列成一份清单。将诸多领域的方法与技巧清单汇总到一起,其交集会是怎样的?为了得到答案...