Materials you will need: burlap, cardstock, ruler, X-Acto knife, computer, inkjet printer. 1  Measure out your piece of burlap to 8.5 by 11. Use the X-Acto knife to cut it. 2  Repeat with the card stock. 3  Use the masking tape to affix the burlap to the card stock. 4  Make sure your printer settings are set to Heavy Duty.
Ideally, concrete should be poured when the air temperature is between 50 and 90 degrees Fahrenheit. Cold temperatures slow the concrete-setting process, and when temperatures dip below freezing, the delay allows the water in the mix to freeze before the concrete hardens.
How Long does concrete take to set at 40Â° F?â Almost 11 Hours. How Long does concrete take to set at 30Â° F?â Almost 15 Hours. How Long does concrete take to set at 20Â° F?â It doesnâtâ¦ The concrete is frozen! Be sure to give Harmon Concrete a call for all your concrete needs.ow Long does concrete take to set at 40Â° F?â Almost 11 Hours. How Long does concrete take to set at 30Â° F?â Almost 15 Hours. How Long does concrete take to set at 20Â° F?â It doesnâtâ¦ The concrete is frozen! Be sure to give Harmon Concrete a call for all your concrete needs.