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Quikrete Fast-Setting Concrete Mix, 25 kg (55 lb) Bag
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Fast-Setting Concrete Mix, 25 kg (55 lb) Bag
Quikrete Fast-Setting Concrete Mix is a dry, bagged mix for work that can't wait on a slow cure. It sets in 20 to 30 minutes, is walkable in 2 hours and reaches about 4,000 psi (27.6 MPa) at 28 days. This is the 25 kg (55 lb) bag, model 100425.
It sets posts without mixing and suits slabs, steps, footings and repairs poured 2 in. (5 cm) thick or more.
Features and Common Uses
- Sets in 20 to 30 minutes and takes foot traffic after 2 hours
- About 4,000 psi (27.6 MPa) compressive strength at 28 days
- Sets posts without pre-mixing
- Suited to pours 2 in. (5 cm) thick or more
Commonly used for:
- Setting fence, deck and mailbox posts
- Driveways, sidewalks, patios and steps
- Footings
- Concrete repairs where rapid setting is required
Specifications
| Brand | Quikrete |
|---|---|
| Model | 100425 |
| Product | Fast-Setting Concrete Mix |
| Bag Size | 25 kg (55 lb) |
| Set Time | 20 to 30 minutes |
| Walkable After | 2 hours |
| Compressive Strength | About 4,000 psi (27.6 MPa) at 28 days |
| Minimum Pour Thickness | 2 in. (5 cm) |
| Bag Dimensions | 18 x 11 x 3.75 in. |
Specifications as published for this product: Source: Quikrete Fast-Setting Concrete Mix 25 kg, product page.
How to Install
- For a post, dig the hole and set the post plumb. For a slab, build and level the forms and compact the base.
- For a post, pour the dry mix around it and add water until the mix is saturated. For a slab, mix with clean water and fill the forms.
- Strike off slabs with a straight board and float. Work quickly, since the mix sets in 20 to 30 minutes.
- Walk on the concrete after 2 hours. Cover it with plastic for initial curing and keep heavy loads off for at least 4 hours.
Quikrete's data sheet for its Fast Setting Concrete Mix (60 lb bag) carries the full mixing and application detail: Source: Quikrete Fast Setting Concrete Mix data sheet (PDF).
Frequently Asked Questions
How fast does it set?
It sets in 20 to 30 minutes and is walkable after 2 hours. Mix only what you can place in that time.
Can I use it to set posts?
Yes. It sets posts without pre-mixing: pour the dry mix around the post and add water.
How thick can I pour it?
Pours should be 2 in. (5 cm) thick or more.
How strong is it?
About 4,000 psi (27.6 MPa) at 28 days.