FAST SETTING CONCRETE MIX
Sakrete® Fast Setting Concrete Mix is a preblended fast setting mixture of special cementitious materials, sand and coarse aggregate. For projects where a rapid set is needed to allow for same day use. For setting posts and poles without mixing or bracing. For slab placement where concrete thickness exceeds 2” (51 mm).
Features:
•High Strength 4,000 psi
•Full depth applications 2” (51 mm) or greater
•Ideal for structural applications requiring a small volume of concrete
•Rapid setting in approximately 1/2 hour resulting in same day use
Use For:
•Setting fence posts
•Driveways, slabs, patios, walkways
•Curbs
•Stairs
•Ramps
•Structural applications requiring a small volume of concrete
Yield/Water/Coverage:
Bag Size |
Yield |
Water |
|
|
|
50 lb (22.6 kg) |
0.38 ft3 (0.01 m3) |
2.5 to 3 qts (2.4 - 2.9 L) |
To determine coverage: Multiply Length (feet) x Width (feet) x Thickness (inches) and divide by 12. Then divide by the yield in the chart above to determine the numbers of bags needed. See Calculator on Sakrete.com for assistance.
Yield and water are approximate.
Post Setting - Based on Average 10” Diameter Hole:
12” (305 mm)deep |
18” (457 mm) deep |
|
|
1.25 bags |
2 bags |
|
|
|
|
24” (610 mm) deep |
30” (762 mm) deep |
|
|
2.5 bags |
3 bags |
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|
Technical Data:
Sakrete Fast Setting Concrete Mix meets or exceeds the compressive strength requirements of ASTM C387.
Compressive Strength ASTM C39 3 days = 2,500 psi (17 MPa) 7 days = 3,500 psi (24 MPa)
28 days = 4,000 psi (28 MPa)
Slump Range = 2” - 3” (50 - 75 mm)
DIVISION 3
Structural Concrete – 03 31 00
The Pro’s Choice Since 1936
Color:
Gray
Preparation/Application:
For best results all materials should be stored between 40°F (4°C) and 80°F (27°C) 24 hours prior to installation.
Refer to:
-ACI 302.1 Guide for Concrete Flooring and Slab Construction
-ACI 304.1 Guide for Measuring, Mixing, Transportation and Placing Concrete
-ACI 305R Guide to Hot Weather Concreting
-ACI 306R Guide to Cold Weather Concreting
Post and Poles:
1.Dig hole to required depth and diameter (depth should be 1/3 the length of the post or pole and hole should be 3 times the diameter of the pole or post width). Place 4” to 6” (102 mm to 152 mm) of gravel as a base and compact.
2.Place the post or pole in the center of the hole and onto the gravel base.
3.Level and support post or pole in place.
4.Fill hole 1/3 full of water.
5.Then add Concrete directly from bag.
6.If surface is dry add more water. Excess surface water is not a problem.
7.Re-check the level of the post.
8.Slope top of mix to allow water to drain away.
Flatwork (Slabs, sidewalks, walkways, etc.):
CAUTION: Do not mix more than can be placed and troweled in 15 minutes.
1.Stake out the area where the concrete will be placed.
2.Cut and remove all soil, grass, sod, etc.
3.For improved drainage place several inches of gravel into the excavated area. Remember to allow enough depth for both the gravel and a minimum of 4” (102 mm) of concrete.
4.Place forms in the desired area assuring that they are level, square, and all corners sealed so no premixed material can escape once placed.
5.Place the concrete into the forms to full depth.
6.Consolidate by moving into corners and low areas to assure there are no voids.
7.Using a straight edge (a 2 x 4 works well) level the surface of the concrete using a back and forth sawing motion.
8.Using a float or trowel smooth the surface to remove imperfections. This is not a final trowel finish, so complete this quickly. Too much troweling at this point will cause dusting and weaken the surface.
9.Using a concrete grooving tool, cut joints into the concrete every 3 - 4 ft
(.9 - 1.2 m). Expansion joints should be placed every 8 ft x 12 ft (2.4 x 3.7 m) in each direction and must extend through the entire depth of the slab.
10.Once the concrete has stiffened slightly and all water has evaporated from the surface use the trowel to put a smooth level surface on the concrete. Applying a light broom finish will aid with traction and remove any imperfections left from the trowel.
11.Forms can be removed the following day.
Sakrete.com • 866-725-7383
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