Usually when you're planning on going over it with additional concrete or cement, or in preparation for an epoxy or waterproofing coating.
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Yes, concrete contractors do need a license, which would be a contracting license. You should always ask them for their license before they begins the job, so they have less of a chance of scamming you.
metal ones
in between existing concrete and the new concrete you need to place an expansion joint in between the two.
To determine how much concrete you need for a footpath, first calculate the area by multiplying the length by the width of the path. Then, multiply the area by the desired thickness of the concrete (typically 4-6 inches for footpaths). Convert all measurements to the same units (e.g., feet) and remember that one cubic yard of concrete covers about 81 square feet at a thickness of 4 inches. This calculation will give you the total volume of concrete required.
paint or acid etch
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Alkaline cleaners are generally more effective and safer for cleaning concrete than acid cleaners. Acidic cleaners can etch and damage the surface of the concrete if not used properly. Alkaline cleaners are better at breaking down oils and grease commonly found on concrete surfaces.
'Etch' , who cannot speak but communicates through his screen , is an "Etch-A-Sketch" toy with a magic screen .
No, stomach acid (hydrochloric acid) is not the same as the acid used to etch concrete (usually muriatic acid, which is also known as hydrochloric acid). The concentrations and purposes of these acids are different, with stomach acid being naturally produced in the human body for digestion and muriatic acid being a strong chemical used for industrial purposes.
A window etch kit would include acid, a corrosive material, to etch the glass.
The word etch is a verb. The past tense is etched.
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Concrete is made up of three main ingredients - water, Portland cement, and aggregates. To dissolve it, you can use hydrofluoric acid which is quite dangerous to use, or products called Ascarlite or Cemix.
No, he did not.
yes they need to be set in concrete. depending on your fence, one bag of concrete per post should be enough.