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 Materials, 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. Numerous municipalities, state highway departments,
and engineers are specifying flowable slurry increasingly 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 construction demonstration of slurry placement 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.
|
8:30 a.m. |
Registration (Continental Breakfast Included) |
|
9:00 |
Welcome |
|
9:15 |
What is flowable slurry? - Engineering properties and mixture proportions of flowable slurry (a.k.a. CLSM) made with coal ash, case history, and construction applications. Tarun R. Naik |
|
10:45 |
Break (refreshments - included) |
|
11:00 | Field applications of flowable slurry in backfilling of excavations, trenches, and underground voids. Effect of mixture proportions on setting characteristics, placement, testing, field performance, economy, and marketing. Victor H. Smith |
|
12:15 p.m. | Lunch (included) |
|
1:30 |
Illinois EPA and Illinois DOT Requirements. Tarun R. Naik |
2:00 | Flowable Slurry Placement Demonstration and Questions and Answers Rob Nelch and Tarun R. Naik |
|
3:30 |
Adjourn |
Tarun
R. Naik, Ph. D., P. E., FACI
Director, UWM Center for By-Products Utilization,
Milwaukee, Wisconsin
Dr.
Naik has over 35 years of experience with cement, aggregates, and
concrete.
His contribution in teaching and research has been well recognized
nationally and internationally.
His research has resulted in over 250 technical reports and papers
in ACI, ASCE, ASTM, etc.
He is a member of ACI, ASCE, ASEE, ASTM, RILEM, NSPE, and WSPE.
He is a member of technical committees of ACI, ASCE, ASTM, and
RILEM.
He
has served as a president of WI-ACI, WSPE, and other organizations.
Victor H. Smith
Quality
Control Supervisor, Cemex USA, Tampa, Florida
Mr.
Victor Smith has specialized in design and construction of value-added products in reinforced concrete buildings for over 25 years. He has extensive experience in high-strength concrete, testing, code development, investigation, teaching, and research & development. Mr. Smith is an active ACI member and serves on ACI 229, 305, and 332. He is a member of the Florida Concrete Products Association, USF-Engineering Advisory Board, Past Chair for Construction Materials Council, and Past-president, ACI-Suncoast.