Do I need rebar in concrete slab for hot tub?
Some concrete contractors say no mesh or rebar is necessary, others say mesh is enough, and others recommend the rebar which provides the most strength.
Will my concrete patio hold a hot tub?
Usually a concrete slab made to building code is suitable to hold a hot tub. However, many patios and other concrete slabs are pitched for drainage, which may make an unsuitable base for your hot tub. Second, your existing concrete slab must be in good condition.
How many bags of concrete do I need for a hot tub pad?
The 8′ x 8′ x 4″ slab for smaller tubs, or 10′ x 10′ x 4″ slab for larger tubs is as much as 1.25 yards of concrete. That is equal to almost 75 bags of concrete weighing 60 pounds each. The slab thickness should be 6″, use 4000 psi concrete, you do not need footers.
How long does it take for 4 inches of concrete to cure?
Concrete typically takes 24 to 48 hours to dry enough for you to walk or drive on it. However, concrete drying is a continuous and fluid event, and usually reaches its full effective strength after about 28 days.
What’s the difference between a concrete slab and a cement slab?
What is the difference between cement and concrete? Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement.
How much would a 12×20 concrete pad cost?
Concrete Slab Cost Calculator
| Size (in feet) | Approximate Cost |
|---|---|
| 12×12 | $865 |
| 12×20 | $1,440 |
| 20×20 | $2,400 |
| 24×24 | $3,460 |
Does concrete get harder with age?
Concrete strength increases with age as long as moisture and a favorable temperature are present for hydration of cement. Compressive strength, percent of 28-day moist cured concrete.
How much water do I need for 60 pounds of quikrete?
You need a half gallon or up to 4 pints (1.7 L) of water for a 60-pound bag of concrete. That works out to about a pint for every 15 pounds of concrete.
Does wetting concrete make it stronger?
ANSWER: Keeping concrete moist helps the curing process. If too much water is lost from the concrete through evaporation, the hardening process slows down or ceases. Concrete continues to gain strength after pouring for as long as it retains moisture, but the longer it moist-cures, the slower the rate of strength gain.
What happens if you add too much water to concrete mix?
What happens when you add too much water to concrete and/or other cement mixes? Over-watered concrete may lead to lower strength, reduced durability, shrinkage cracking, and a variety of surface problems. It is critical that the proper amount of water be added to concrete and other cement mixes.