The "mud" mentioned earlier is a mixture of dirt, water, and portland cement. The dirt is processed by Del Sievert Trucking Inc. and consists of 60 percent clay, 20 percent sand, and 20 percent lime. To every yard of this, we add three 94-pound bags of the portland cement and water. We call this a three-bag mix. It contains approximately half of the portland cement as for new concrete.
- The cement and the water are added on the job to obtain the desired slump (density).