Main Office
Phone: 503-363-9281
Fax: 503-576-3938

For concrete: 541-918-4266
For rock: 503-363-9237

Mailing address:
PO Box 12095
Salem, OR 97309

Physical address:
3723 Fairview Industrial Dr., Ste. 160
Salem, OR 97302

Concreting Tips

  1. You’ll need to select a mix for your project. Minimum strength on flatwork should be 3,500 psi. River Bend sells a COD mix that is reliable and customer-friendly, and will achieve about 4,000 psi.
  2. Pour concrete on a stable base. Dampened, compacted base rock is best.
  3. A consistency slightly looser than peanut butter is about right. The concrete will get weaker and more prone to cracking as you add more water.
  4. Have enough people on hand to do the job. Average set time is 5 hours, but concrete is too stiff to work after an hour or two. Once it sets, you’re stuck with it.
  5. Take the concrete’s temperature. It should be between 50 and 90. The closer it gets to 50, the longer it will take to set. The closer it gets to 90, the quicker it will set. On cold days, asking us to add hot water will help.
  6. When the concrete is finished, cure it. Curing keeps moisture in the concrete, which slows down shrinkage while the concrete has time to gain strength. If the moisture leaves the concrete too soon, and the concrete shrinks before it has time to gain strength, the chance of cracking increases.
  7. Cure the concrete with a spray-on curing compound, or by keeping wet burlap on the concrete for three days, or by keeping the concrete wet for three days with a sprinkler or soaker hose.
  8. Concrete wants to crack. Joints are planes of weakness that attract cracks and make them look better. A joint is a line tooled into the concrete while it’s soft or saw cut into the concrete after it sets – usually the next day. On a typical 4-inch thick patio or driveway, joints should be 8-10 feet apart.
  9. Mesh is a recycled plastic fiber that you add to concrete. Our mesh is so fine that it’s hard to see with the naked eye. It disperses through the concrete and ties everything together with hair-like strands. It helps concrete fight off a variety of different cracks.
  10. When in doubt, contact a professional concrete finisher. We can help you find reliable craftsmen and women.