Batch plants are essentially mixers that combine cement and sand (aggregate) used in the dry-mix process. Materials used in the dry-mix process can be pre-bagged or mixed onsite. Pre-dampened materials can reduce static electricity, dust and rebound that are common with using “bone-dry” materials. Pre-bagged materials are available from several suppliers in specifications to meet virtually any job requirement. To control costs and delivery of the proportions of your gunite equipment, use a batch plant or combination batch plant/pre-dampener. The addition of a spray bar system to the batch plant gives the ability to pre-dampen materials before they are fed into the dry-mix shotcrete/gunite machine.