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

Inside Slabs

Inside slabs need to be durable and abrasion resistant. They need to be easy to finish, so it’s easier to get them flat and even. Using at least a 3,500 psi mix helps with these things. Inside slabs don’t need entrained air. Mixes with ¾” rock tend to perform better in slabs than mixes with 3/8” rock, because the 3/8” requires more water and more water means more shrinkage. Good mixes for interior slabs include:

Mix 313561 – 3,500 psi, ¾” rock, no air.
Mix 314161 – 4,000 psi, ¾” rock, no air
Mix 390501 – 4,000 psi, ¾” rock, special slab mix