Lean concrete is a mix where the amount of cement is lower than the amount of liquid present in the strata. This makes it ideal as a base layer where other kinds of concrete are placed on top. It is good for providing a flat bottom in uneven or dirt terrain.Know More
Concrete with high water content is considered lean because it has a lower concentration of cement compared to other kinds of paving and building materials of that class. It is often used as a plaster between bricks or other pieces of infrastructure to create a tight seal. Lean concrete cracks over time when it is not applied properly or mixed to the right specifications. Careful preparation is key to successful lean concrete.
Lean concrete is commonly used in road construction as the lowest level under the pavement on which vehicles travel. It serves as a sub-base in projects where the ground itself is not a suitable resting place for a project to begin, thereby giving roads and buildings a stable platform on which to rest.
A lean concrete mix is measured in pounds per square inch. In the right conditions, lean concrete flows like a liquid and makes for easy applications. It usually is not used in cases where more than 2 inches of sub-base or ground clearance is necessary.Learn more about Building Materials
Walking is acceptable on newly formed concrete only after 24 hours have passed since it was poured. Even then, walking on the concrete before 48 hours has passed can still cause scuffing and marks on the surface.Full Answer >
To sand down concrete, remove any coating, seal the cracks and joints with an epoxy filler, attach metal-bonded diamond discs to a grinder, and sand the surface of the concrete. Start with a 30- or 40-grit diamond disc, and slowly increase the grit until you reach the desired finish.Full Answer >
The density of normal concrete is about 145 pounds per cubic foot. The density of concrete is determined largely by the type of aggregate used in the mixture. The density of the cement used in the mix can also affect density, with compressed, vibrated cement creating a denser concrete mix.Full Answer >
A concrete floor should be about 4 inches thick if it is in a residential home or building. For a building supporting heavy loads, 5 to 6 inches is the recommended thickness. A good quality concrete floor will have even thickness throughout.Full Answer >