Workshop Description

 The purpose of the workshop is to present important technical information and review production and construction aspects for a new type of backfill material for trenches and other excavations, as well as for filling abandoned underground pipes, tunnels, etc.  Flowable Slurry (Controlled Low Strength Material, or CLSM) is a low-strength concrete-like material that is made from one or more of the materials such as coal ash, fine crushed sand, used foundry sand, crushed glass, wood ash, regular concrete sand, water, and some Portland cement.  Flowable slurry can be designed for future excavation. The strength of this material can vary from 50 psi to 1200 psi at the age of 28 days.  Flowable slurry is being specified increasingly by municipalities, state highway departments, and engineers for many applications. 

 

The workshop will present case histories of successful installations. Technical information will be presented on mixture design, mechanical properties, construction applications, and environmental regulations. A video-demonstration of slurry production, placement, and old slurry excavation will also be presented. Handout materials will be provided. The workshop should be of interest to those associated with building design, engineers, architects, engineering technicians, engineers working in governmental agencies, industry and private practice, engineering faculty and students, as well as ready mixed concrete producers, sand and coarse aggregates suppliers, and contractors. Knowledgeable professionals engaged in specifying, approving, producing, marketing, and using flowable slurry will present state-of-the-art information.