Dry lean concrete is used as a sub base for structural concrete. It contains much less cement and more sand compared to structural concrete.
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.
I think it is twice the cost of ready mix concrete?
How to mix 4500 psi cement?
Bags of dry powered mix concrete are usually just a couple of bucks each for 80lbs.
The weight of dry concrete mix can vary depending on its composition, but a typical bag of dry concrete mix weighs about 50 pounds (approximately 22.7 kilograms). This weight can fluctuate based on the specific formulation and any additives included. Additionally, when mixed with water, the final weight will increase significantly due to the water content.
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.
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.
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.
I think it is twice the cost of ready mix concrete?
How to mix 4500 psi cement?
Dry pouring concrete, also known as dry mix concrete, is not typically recommended for construction projects as it can lead to weaker and less durable structures. Wet pouring concrete, where water is added to the mix before pouring, is the preferred method as it ensures proper hydration and strength of the concrete.
I’ve worked on a few small- to mid-scale projects where dry pour concrete was considered, and honestly, it depends on the situation. Dry pour concrete is basically when the dry mix is placed in a hole or formwork and then water is added on top to let it seep in. It can work in simple applications like fence posts or mailboxes because those don’t bear a lot of structural load. But when you’re talking about serious construction projects, dry pour isn’t the best choice. Properly mixed and poured concrete is always stronger and more reliable because the water-to-cement ratio can be controlled. With dry pour, you risk weak spots, uneven curing, and cracks forming over time. If you’re thinking about something like Concrete Repairs Minchinbury, you’d definitely want to stick with properly mixed concrete. Repairs need to be solid and long-lasting, and that’s not something dry pour can really guarantee in a structural sense. I’d only ever use it for light-duty, non-structural fixes, but never for main construction or repair work.
A 20 kg bag of dry mix concrete typically yields approximately 0.01 to 0.015 cubic meters (or about 10 to 15 liters) of mixed concrete, depending on the specific mix and water content used. This can vary slightly based on the manufacturer and specific product. Always refer to the bag's instructions for the most accurate yield information.
Bags of dry powered mix concrete are usually just a couple of bucks each for 80lbs.
The weight of dry concrete mix can vary depending on its composition, but a typical bag of dry concrete mix weighs about 50 pounds (approximately 22.7 kilograms). This weight can fluctuate based on the specific formulation and any additives included. Additionally, when mixed with water, the final weight will increase significantly due to the water content.
Typically a ready mix concrete weighs anywhere from 135 lbs to 160 lbs per cubic foot. The weight varies widely due to the different densities of the aggregates that are used in concrete mixes. Lightweight aggregates such as expanded shale can be used to significantly reduce weight but there is some sacrifice in strength taking this approach. Typically the denser the concrete and aggregates the higher the strength and weight.
there are 108 20kg bags of concrete to 1 cu mtr. If your making your own mix using dry mix concrete requiring cement and water, and your making a mix ratio of 5:1, then you divide 108 by 6 = 18. therefore: 18x20kg bags of cement to 1800kgs of dry concrete mix.