pouring concrete in a cone-shaped metal container and letting sit for a specified period of time, then lifting the cone. The distance in which the concrete drops from the original height once the cone is removed is considered the slump. The greater the distance, in which the concrete drops, the higher the slump and the wetter the concrete mix.
HIGH EARLY CEMENT - A portland cement sold as Type III sets up to its full strength faster than other types.
MIL THICKNESS - Measurement used to determine thickness of a coating. 1 mil =.001 inch (1/1000).
Make sure that when you receive multiple quotes for work to be done that your scope of work is clearly defined and that the prospective bidders list all exclusions and qualifications. ASK a lot of questions!
In the process of selecting a contractor make sure that they have all of the proper insurances including general liability and more importantly workers compensation insurance. If the contractor does not carry workers compensation and his employee is injured at your facility you will become liable.
Ask for references, a contractor who is reputable will gladly offer them.