Our proprietary culvert lining material is a specialized blend of cement, sand, and pozzolanic admixtures designed for superior pumpability, adhesion, and durability. The unique high-slump mix can be easily sprayed using our advanced centrifugal sprayer. It is prepared at a plant in Northern California, to provide fast turnaround, less storage requirements, and optimal product quality control. Culvert Lining has a compressive strength of over 8000 psi. 36 bags (1 truckload) minimum for bulk orders 360 bags (10 truckloads) for distributor