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How long does it take concrete to dry?
If you are doing something like fence post, figure around 24hrs to be able to work with it. If its something like a flat surface (walkway etc..) figure 2 days before you can walk on it.
What is the minimum and maximum curing time of asphalt prime coat?
There are no curing time requirement for prime coat. You can asphalt rigth away after your prime as long as the prime have the proper temperature. There are curing time for TACK COAT which is different. (TACK IS OVER ASPHALT,PRIME IS OVER BASE ROCK ).Is a common mistake confuse those two different operations. The curing time for TACK depend of the weather and varie between 8 hrs to 24 hrs. Gustavo Cuenca Civil Engineer.
What is Transparent concrete price compare to normal concrete?
It should last for years as long as you don't walk on it and smash it down .I have it in my house and it is 20 yrs old ( fiberglass type )
How long should bitumen take to dry when brushed over a internal concrete floor?
how long does it take for bituman to dry outside
What is the cost to put in a concrete driveway?
It really depends how long the driveway is and what company u get it done by
If concrete generates its own heat during curing how long would you need to cover a foundation to keep from freezing?
Keep it covered at least a week.
Why and how would you extend the curing process of the concrete?
Placing plastic sheeting (known as visquene in construction trades) over drying concrete extends the curing process of concrete. The idea is to slow the evaporation of moisture from the drying concrete. The slower concrete curing process, the stronger the concrete becomes. On construction jobs I have been party to, the curing concrete is usually covered for two or three days.If the curing concrete's surface were to get dry, there may not be enough water for the chemical reaction which forms concrete, and so the surface would not be as strong. Wetting isn't about "extending" but rather allowing the curing to make a hard surface. The full curing takes as long as a month to reach full strength, but most of the reaction happens in three days.If you actually want it slower, then cooling would work, as with any chemical reaction. Also disrupting the water-cement reaction would work, which would unfortunately make the concrete weaker. For example, adding sugar or anything that ties up the water would slow the reaction but harm the strength of the result.
How do geckos keep their eyes moist?
The Tokay gecko species, has no eyelids. Because of this, the eyeball must consistently be licked, to keep moistened and improve vision.
What is the effect of ice on concrete?
So long as the concrete is fully cured, ice won't hurt it in your lifetime.If it's not fully set, you'll need to keep it covered with an insulating blanket until all the water has evaporated and it looks dry (light gray}Concrete generates heat as it cures so all you'll need is a blanket this time of year.If it gets down into the teens, you'll need to put additives in the concrete and add a heat source to aid in the curing.
What is the difference between cement and concrete?
Concrete is made from cement. Concrete has cement, rock and sand mixed with water. Cement is just the powdered hydrated limestone.Cement is a building material that is a powder made of a mixture of calcined limestone ( calcined: to Heat a substance so that it oxidizes or reduces) and clay; when cement is used with water and sand or gravel it makes what is referred to as concrete or mortar.Reinforced concrete means that there is a mat of rebar (iron rods) metal, and/or mesh added to provide extra support against stresses and is laid out prior to the pour of concrete.Grout is a thin mortar that can be poured and used to fill cracks in masonry, ceramic tile or brickwork.regular curingIt is critical to concrete's long-term durability that it be kept as moist as possible for the first seven days after placement. In addition, it must be allowed sufficient drying time before being subjected to freezing temperatures or to de-icing salts. Curing concrete properly requires the correct control of moisture and temperature and without proper curing, concrete may only achieve 50% of its potential design strength. The logic behind the practice of a seven day curing period rests on two facts:Cement, the "active" ingredient in concrete requires constant moisture to gain strength.If the concrete is kept moist for the seven day period, it will not only gain strength, but will also shrink less and produce fewer cracks.Curing can be assisted in a number of ways:Spray-on liquid curing agents and sealers.Water ponding or spraying a mist over the concrete.Coverings such as wet burlap, polyethylene, insulating blankets, etc.Leave forms in place.A liquid curing agent is the most effective and convenient method. The curing agent should be applied as soon as finishing is complete. Curing agents form a membrane on the surface of the concrete in order to retain moisture. Once the curing agent has been applied, no further working of the concrete can be done. Use a spray or roller to apply curing agents.According to CSA A23.1-94, curing is a mandatory part of concrete construction and requires moisture to maintain the concrete at 100% relative humidity and a minimum temperature of 10°C for a period of at least 3 days. This period is extended to a minimum of 7 days for the durability requirements of exposure classes F1, C1, C2, S1, and S2.cold curingConcrete can be placed safely throughout the colder months if precautions are taken. During colder weather, the mix should be adapted to the ambient temperature by heating the concrete, adding accelerators, and providing protection. during colder condition's, it is important to heat all concrete to meet the requirements of CSA and to maintain reasonable setting times and strength gain.Concrete generates heat during the hydration process, (the chemical process by which cement reacts with water to form a hard stable paste). Hydration is affected by initial concrete temperature, ambient air temperature, the dimensions of the concrete and mix design.The temperature of the concrete during and after placement is critical since concrete sets more slowly as the temperature drops. Finishing and form removal may be delayed in cool weather and strength development can be impaired if appropriate precautions are not taken.whenever possible , if not always, do not place concrete on frozen ground, on snow, or in freezing weather. If concrete freezes while in a saturated condition, surface problems like scaling, spalling or cracking can arise due to the expansion and contraction of frozen water inside the concrete.During freezing weather, water curing of concrete should be terminated 12 hours before the end of the protection period.Do not use a curing agent if there is any chance that the concrete will freeze during the curing period.Protect concrete from freezing temperatures for 3 to 7 days after placing.Leave forms in place as long as possible. Corners and edges are most vulnerable (cover and heat if necessary).Protect flatwork by covering and heating, or using insulated blankets, or covering with plastic and straw.This information has been provided to assist you .For a complete review of cold weather concrete practices, please refer to CSA A23.1 -- 94 Section 21.
How long does water keep soil moist?
It all depends on the density and amount of soil, and the amount of water.
How long after pouring concrete do you apply sealer?
Depending on what kind of sealer you use, the concrete should be completely dry and firm enough to walk on. However, I know of at least one concrete sealer (Concrete Treat) that can be applied immediately after the concrete has been placed -- with no wait at all for curing. Check out the products as you go and see what might work best for you. See the attached link.
What is the best solution for cleaning concrete?
a presure washer is the best way to clean concrete, keep in mind to keep moving the presure washer and not let it just set in one spot for to long.
What can you do for your hair to grow long strong and straight?
Keep your hair moist and dont apply to much heat keep it braided up every once in a while
How do you keep your hair moist for a long time?
What I do is I shampoo my hair twice with Alberto Balsam. But only condition once. To keep your hair moist do not dry it let it dry naturally, also always use heat protection spray before straightening or curling.
How long can walking catfish stay above water?
the walkin catfish can live above water aslong as you KEEP it moist or it will die
How long does it take concrete to dry?
If you are doing something like fence post, figure around 24hrs to be able to work with it. If its something like a flat surface (walkway etc..) figure 2 days before you can walk on it.
