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Why are there cracks on concrete paths?

Concrete has great compressional strength but very weak torque resistance. That means when the ground underneath concrete paths settles or erodes the concrete will crack. In order to determine where the concrete will crack the constructors leave faults in it. So when the concrete does crack it does so in such a manner that the path is still functional and aesthetic.


How do you remove lichen from canvas awning?

To remove lichen from a canvas awning, you can mix a solution of water and mild detergent, scrub the affected areas with a soft brush or cloth, and rinse thoroughly with clean water. Avoid using harsh chemicals or pressure washers as they can damage the canvas material. Repeat the process if necessary until the lichen is completely removed.


What two basic grades of concrete for paths and driveways?

The two basic grades of concrete commonly used for paths and driveways are standard concrete (often referred to as "normal strength concrete") and high-strength concrete. Standard concrete typically has a compressive strength of around 20-25 MPa (megapascals) and is suitable for light to moderate traffic. High-strength concrete, with a compressive strength of 30 MPa or higher, is recommended for areas that experience heavier loads or more intense wear and tear. Selecting the appropriate grade depends on the anticipated load and usage of the surface.


How to remove tile from concrete effectively?

To remove tile from concrete effectively, start by breaking the tile with a hammer and chisel. Then, use a floor scraper to remove the remaining pieces and adhesive. Finally, clean the concrete surface with a solution of water and vinegar to remove any residue.


How to remove a fence post that is set in concrete?

To remove a fence post set in concrete, you can use a combination of tools and techniques. First, dig around the post to expose the concrete base. Then, use a jack or lever to lift the post out of the ground. If necessary, break up the concrete with a sledgehammer or concrete breaker. Finally, remove any remaining concrete and fill the hole with soil.


How can I remove a tile floor from concrete?

To remove a tile floor from concrete, you can start by using a chisel and hammer to break up the tiles. Then, use a floor scraper to remove the adhesive and grout. Finally, clean the concrete surface with a solution of water and vinegar to remove any remaining residue.


What tools are needed to remove tile from a concrete floor?

To remove tile from a concrete floor, you will need a few tools including a hammer, chisel, pry bar, and a floor scraper. These tools will help you break and remove the tiles and adhesive from the concrete surface.


What is an example of a lichen?

An example of a lichen is the reindeer lichen found in arctic and subarctic regions. This lichen forms a symbiotic relationship between a fungus and an alga, growing on rocks, soil, or tree branches. Reindeer lichen is an important food source for animals like reindeer and caribou.


Are lichen eukaryotic or prokaryotic?

A lichen is eukaryotic.


What is a antonym for lichen?

an antonym for lichen is swampy.


What is gravel for?

The main industrial use for gravel is to pave roads and paths. Gravel is also used to help make concrete.


How do you remove concrete from marble?

Muriatic acid will remove concrete from marble. You can also sand it off. Using a scraper may also help to free it.