Portable concrete pumps are versatile units, typically employed to pump structural concrete, grout, foamed concrete, sludge, wet screeds and mortar. Portable concrete pumps are available in different sizes for different job applications. They are widely used on small job sites where a full-sized pump truck is not required. Individuals with extensive experience in the operation, maintenance and repair of these pumps may elect to start their own small business. Opening and successfully operating a concrete pump business requires planning and preparation.