Product Description
BASIC USE
For pouring concrete 2" thick or more and building or reparing anything out of concrete including:
Foundation walls and footings
Sidewalks, curbs, steps, ramps and walkways
Appliance and equipment platforms
Pipe and post footings
Floor slabs and patios
Pools, fish pools, stepping stones
Splashblocks and bird baths
Riprap & slope protection
Driveway repairs
COMPOSITION & MATERIALS
Quikrete Concrete Mix consists of a uniformly blended, properly proportioned mixture of stone, gravel, sand, Portland Cement, and other infredients approved for use in concrete.
Available in 60lb. bags
YIELD
A 60lb bag yields approximately 0.45 cu.ft.
Technical Data
APPLICABLE STANDARDS
ASTM International-ASTM C387 Standard Specifications for Packaged, Dry, Combined Materials for Mortar and Concrete.
PHYSICAL/CHEMICAL PROPERTIES
Quikrete Concrete Mix exceeds the compressive strength requirements of ASTM C387
Installation
PREPARATORY WORK
Stake out the planned area and remove sod or soil to the desired depth. Nail and stake forms securely in place. Tamp and compact the subbase until firm.
MACHINE MIXING INSTRUCTIONS
Quikrete Concrete Mix can be mixed in a barrel-type concrete mixer or a mortar mixer.
Choose the mixer size most appropriate for the size of the job to be done
Allow at least 1 cu.ft.(28 L) of mixer capacity per 80lbs of Quikrete Concrete Mix to be mixed at one time.
Add approximately 6 pt. of fresh water to the mixer per every 80lbs of Quikrete Concrete Mix
Turn on the mixer and begin adding the concrete to the mixer
If the material becomes too difficult to mix, add additional water until a workable mix is obtained
If a slump cone is available, adjust water to achieve a 2"-3" slump
Note: Final water content should be approximately 6-9 pt. of water per 80lbs of concrete.
HAND MIXING INSTRUCTIONS
Empty concrete bags into a suitable mixing container
Add approximately 6 pt. of clean water per 80lbs of concrete
Work the mix with a shovel, rake or hoe and add water as needed until a stiff, moldable consistency is achieved
Be sure all material is wet
Do not leave standing puddles
APPLICATION
Method for Pouring a Slab
Dampen the subgrade before concrete is placed
Do not leave standing puddles
Shovel or place concrete into the form; fill to the full depth of the form
After concrete has been compacted and spread to completely fill the forms without air pockets, strike off and float immediately
To strike off, use a straight board (screed) moving the edge back and forth with a saw-like motion to smooth the surface
Use a darby or bull float to float the surface; this levels any ridges and fills voids left by the straight edge
Cut the concrete away from the forms by running an edging tool or trowel along the forms to compact the slab edges
Cut 1" deep control joints into the slab every 6'-8' using a grooving tool
Allow concrete to stiffen slightly, waiting until all water has evaporated from the surface before troweling or applying a broom finish
Note: For best results, do not overwork the material
Method for Setting Fence Posts
Dig post hole about 3 times the diameter of the post. Hole depth should be 1/3 the overall post height
Place 6" of dry concrete mix in the bottom of the hole. Position the post, checking that it is level and plumb. Combine concrete mix with water and place into the hole
When standing water has evaporated from the concrete, smooth the surface. Taper it away from the post so rain will flow in that direction. Wait 24 hours before post is subjected to any strain
For load-bearing applications, follow local building codes for proper footing specifications
FINISHING
Any standard concrete finishing technique is acceptable for use with Quikrete Concrete Mix. Concrete can be hand troweled, broom finished or finished with other specialty finishes
CURING
Curing is one of the most important steps in concrete construction. Proper curing increases the strength and durability of concrete, and a poor curing job can ruin an otherwise well-done project. Proper water content and temperature are essential for a good curing. In near freezing temperatures the hydration process slows considerably. When weather is too hot, dry or windy, water is lost by evaporation from the concrete, and hydration stops, resulting in finishing difficulties and cracks. The ideal circumstances for curing are ample moisture and moderate temperature and wind conditions.
Curing should be started as soon as possible and should continue for a period of 5 days in warm weather at 70 degrees F or higher, or 7 days in colder weather at 50-70 degrees F.
PRECAUTIONS
Curing compounds should not be applied if rain or remperatures below 50 degrees F are expected within 24 hours
Curing with plastic or burlap can cause patchy discoloration in colored concrete. For colored concrete, wet curing is recommended
Do not use curing compounds during late fall onsurfaces where de-icers will be used to melt ice and snow. using curing compounds at that time may prevent proper air drying of concrete, which is necessary to enhance its resistance to damage caused by de-icers
Protect concrete from freezing during the first 48 hours. Plastic sheeting and insulation blankets should be used if temperatures are expected to fall below 32 degrees F.
TYPICAL PROPERTIES OF QUIKRETE CONCRETE MIX
Cure Time / Compressive Strength
7 days / 2500 psi
28 days / 4000 psi
Slump Range / 2"-3"
MIXING WATER FOR QUIKRETE CONCRETE MIX
LBS of Concrete / Starting Water Content, pt / Final Water Content, pt
80lbs / 6pts / 6-9pts
60lbs / 4pts / 4-7pts
40lbs / 3pts / 3-4.5pts
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