can you pour concrete over concrete - how to pour new over,if you're new concrete is under 3' thick, apply weld-crete, let it dry at least 1 hour, then you're ready to pour your new concrete. if you're new concrete is 3 inches thick or more and your old concrete isn't all cracked up, then you're ready to pour your new concrete. if you're old concrete is cracked up, install your bond breaker (for really wide cracks i recommend sand or 1/2' styrofoam), then you're ready to pour..how long do you have to wait to seal concrete - concrete,some manufacturers have products available that can be applied as soon as new concrete can withstand the weight of the installer, but typically if you are looking to apply a penetrating concrete sealer, decorative or epoxy/urethane coating you will need to wait the industry standard 28 days for concrete to fully cure before applying a concrete sealer..
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lime (lime is usually cheaper, about 80% of the cement price. lime applies if you use portland cement type) water. with the heat resistant concrete type mixed with portland you can add into this mix a little standard fireclay if you like. mixture: (parts ratio is 3 x 2 x 2 x 0.5, plus water) 3 shovels of the gravel or grog/crushed firebricks
gravel is one of the more common alternatives to concrete. there are a few different types you can find in the home improvement store that can replace concrete cement used for driveways and walkways. these include pea gravel, crushed stone, and quarry process. pros of gravel. cheaper than other surface materials and low-cost to install.
resurfacing existing concrete can add new life, finish, and even color to worn, chipped and cracked surfaces. plus, it extends the life of the original concrete. however, if the concrete has multiple through cracks or has heaved or pitched out of alignment, it may not be worth saving and should be removed.
also, if it involves any exposed steel, clean any rust or adhered concrete. if you are required to reconstitute galvanized or epoxy rebar surfaces, consult with your bar supplier for specific recommendations; you may need to cut out extra concrete to allow more work space behind the bar.
remove the sheeting or blanket daily, wet the concrete again, re-cover it, and repeat for seven days. this technique can also be used for upright concrete columns and walls by wetting them down
portland cement concrete works well in mass and provides great compressive strength but not bond. concrete is marvelous stuff but in time it will deteriorate. when it does, you either have to patch it or replace it. assuming that it is structurally sound the least expensive alternative is to patch it.
the simple answer is yes, you can pour new concrete right over existing concrete. but, there's some things you have to take into consideration before you make a final decision. is the existing concrete structurally sound?
allowing the new concrete to cure for at least 30 days can reduce the alkalinity and moisture content to levels low enough for the concrete to take paint. but it can take as long as 90 days before new concrete has cured enough for painting, depending on climate and weather. what does etching do to
shake it through some old fly screen if you wish to reuse it. yes concrete that doesnt require a grano finish should be ok just dont use t for anything highly structural such as a concrete beam.
you can still mark the concrete if you aren't careful. the average person should not walk on the concrete at this point. after 24 hours. after 24 hours, you can safely walk on your new concrete. this is the minimum amount of time you should wait for the concrete to harden here in southern california.
concrete can be recycled and reused in many ways but it all depends on how large that piece of concrete is and what is the shape of the concrete. reusing concrete is a way to reduce your construction costs and at the same time providing some benefits to the environment when you reuse that concrete…
you can try using an unsanded tile grout, a slurry of just portland cement, or even sifting the fines from the concrete mix that you used. like i said, i do not know what type of success rate people are having.
community answer. yes, but you must ensure the concrete has porosity, or the ability to absorb the stain. do a water test: sprinkle or pour a cup of water on the concrete. if it puddles and does not absorb within a minute or so, then you will need to etch the concrete with an etching solution or acid.
almost any structurally sound concrete floor, whether new or old, can be polished. but there are some exceptions. polishing new floors. for new floors, no special mix design is required to achieve good results. however, the floor should be in place at least 28 days before polishing begins to
this method requires that the concrete has been poured and finished, but should still be 'wet.' sprinkle on the powder. as your concrete is curing, cover the area with an even coat of the colored powder. avoid clumping the powder as it can become difficult to clean. if the area is small enough, you can apply the powder by hand.
leaving any roots to grass or weeds can lead to regrowth up through the concrete cracks. although grass is likely not going to be strong enough to crack the concrete itself, it can find little microscopic cracks already formed and push its way through, creating a larger, more noticeable split. you will have an uneven foundation
can you do stamped concrete over old concrete? stamped concrete is an affordable way to lay down a fresh surface for any exterior space —stairs, walkways, patios, driveways, and pool areas. we are often asked if it is possible to resurface existing concrete rather than remove the existing concrete feature and start from scratch.
your new concrete is designed to reach 90% of its full strength potential after 7 days, so feel free to drive your personal vehicle on it then. it will take additional time before you can drive or park heavy equipment or machinery on your newly poured concrete, so make sure to
etching concrete with vinegar. acid etching with vinegar is easy and less labor intensive than using a machine to pretreat the concrete floor before sealing or painting. vinegar has an acetic acid solution of about 4 percent. it reacts with the alkaline in the concrete. click to see full answer.
so using a high-quality drill bit is without a doubt the best thing to do here. while using it you have to slow down occasionally so that you can prevent overheating. setting up the depth. it is very important to set up the depth while drilling into a concrete surface. some drills have a measurement system that can help you to drill at a depth you want.
it can also be mixed on-site, using a cement mixer or simply mixing with a shovel or hoe in a wheelbarrow or mixing tub. there are many different types of mortar designed for different applications. when working with brick and other masonry units, it is important to use the right type of mortar for the masonry, as some mortars are too hard for some types of masonry and can crack if used improperly.
you can restain concrete if it's already been stained, but it won't be as rich of a color, as it may not take in all areas of the concrete. the color of the layered stain will be different than the swatch you see for stain on a naked concrete base.
decorative concrete surfaces are usually not broom finished. this includes interior concrete surfaces like floors of the living room and bedroom. stains and dyes are some of the more popular finishes for this type of concrete. you can apply dyes and stains to broom finished concrete too, though.
you will need to have a clean surface to start with, and that can only happen with pressure washing. once you’re done, start mixing your concrete per the instructions on the baggie. apply a bonding agent to the concrete. this will help you make sure your concrete bonds with the new mix.