Large concrete blocks made from returned concrete is an economical and fast way to construct a retaining wall or material bin. Our blocks can be delivered and set in place with our boom truck. The first hour of unload time is free with a charge for additional time. Blocks can also be picked up at our yard. Call for pricing and delivery prices or click Return Concrete Blocks are not under warranty as we do not guarantee the quality, strength or air content of the mixes used in the concrete returned to our plant. Please understand that deterioration of these blocks is possible and Graves Concrete is not liable in such an event. Return Concrete Blocks are all v-groove blocks (except v-groove caps), 222,224, 332, and 334 blocks.