A lean mix simply means that there is more liquid that concrete in the mix. The mix is thin and pours easier. It is sometimes used when you need to make a base on an uneven surface, like dirt. You would pour the lean mix, and then use it to put the more solid mix on top of.
Blind Concrete
Dry lean concrete is used as a sub base for structural concrete. It contains much less cement and more sand compared to structural concrete.
yes
I think it is twice the cost of ready mix concrete?
How to mix 4500 psi cement?
a blinding concrete is a thin layer of lean concrete
Main function of the lean concrete is to provide the uniform surface to the foundation concrete and to prevent the direct contact of foundation concrete from the soil. Lean concrete is used under the foundations.
Lean mix concrete is used for substructures like foundations,piles,etc.,Ready mix concrete is used for superstructures and also for mass construction.Generally, quality of ready mix concrete is good when compared to the lean mix concrete.Workability of lean mix concrete is high when compared to RMC.
Blind Concrete
Dry lean concrete is used as a sub base for structural concrete. It contains much less cement and more sand compared to structural concrete.
yes
I think it is twice the cost of ready mix concrete?
A plain concrete with a large ratio aggregate to cement than structural concrete. It is used for filling and not structural duties
How to mix 4500 psi cement?
A lean mix of concrete is a weak mix (ie. Gen 1 or C10 for example). As for how waterproof a lean mix is compaired to a shotcrete mix, it would depent on what mix of shotcrete is used. Generaly speaking, whatever mix of concrete is used if it dose not have a waterproofing agent in it (ie. Sika 1+ Waterproofer for example) it wont be that waterproof. But if you want a staight answer, I would say shotcrete would be more waterproof, only because it tends to be a stronger mix. Regards Colin, a concrete batcher for Tarmac.
Standards normally are 4 inch AA
Lean concrete is primarily used as a sub-base or foundation layer in construction projects. Its lower cement content makes it economical and lightweight, providing a stable support for structures without the need for high strength. It helps in reducing the overall cost of concrete work while ensuring adequate drainage and reducing the risk of soil settlement. Additionally, lean concrete can be used in applications such as pavement bases, where high strength is not required.