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Workshop and Field Demonstration for Uses of Flowable Slurry Containing Coal Ash, Used Foundry Sand, and Other Recyclable Products

Sponsored By
UWM Center for By-Products Utilization, Milwaukee, WI
Wisconsin Electric Power Company, Milwaukee, WI

Co-Sponsored By
American Coal Ash Association
Engineered Fill Systems, A service of Mineral Solutions, Inc.
Master Builders, Inc.
Southeast Branch of Wisconsin Section, American Society of Civil Engineers
Wisconsin Chapter, American Concrete Institute

September 16, 1997
Holiday Inn, Peoria, IL

Workshop Description

A one-day workshop on Uses of Flowable Slurry Containing Coal Ash, Used Foundry Sand, and Other Recyclable Products has been planned at the Smith Brothers Restaurant, Port Washington, (25 miles north of Milwaukee). The purpose of the workshop is to present important technical information and review production and installation aspects on a new type of backfill material for trenches and other excavations, as well as for filling abandoned underground pipes and tunnels. Flowable Slurry is a low strength concrete-like material that is made from one or more of the materials such as coal ash, used foundry sand, regular concrete sand, water, and some portland cement. The strength of this material can be adjusted up to 1200 psi. It is being specified increasingly by municipalities, state highway departments, and engineers for many applications.

The workshop program includes information on material characteristics, mixture proportions, field testing, placement, strength development, shrinkage, permeability, etc. The workshop will also present well documented case histories of successful installations both in the Milwaukee area as well as in other states. It includes a visit to a flowable slurry production facility and demonstration of slurry production, placement, and old slurry excavation. Handout material will be provided. The workshop should be of interest to those associated with building design and materials engineers, architects, engineering technicians, engineers working in governmental agencies, industry and private practice, engineering faculty and students, as well as ready mixed concrete producers, and contractors.

The program will include the following speakers:

* Michael Burks, Team Leader, Port Washington Power Plant, Wisconsin Electric Power Company, Port Washington, WI.
* Trent A. Kohl, P.E., Project engineer, Wisconsin Electric Power Company, Milwaukee, WI.
* Frances A. McNeal, Manager, Governmental Approvals, Master Builders, Inc., Cleveland, OH.
* Tarun R. Naik, Ph.D., P.E., Director, Center for By-Products Utilization, UW-Milwaukee.
* Bruce W. Ramme, P.E., Manager, Combustion By-Products Utilization, Wisconsin Electric Power Company, Milwaukee, WI.
* Bizhan Zia Sheikholeslami, Environmental Engineer, Wisconsin Department of Natural Resources, Milwaukee, WI.
* Samuel S. Tyson, Executive Director, American Coal Ash Association, Washington, DC.
* LaVerne Weber, Manager, Technical Product Development, Engineered Fill Systems, Chicago, IL.

Workshop and Field Demonstration of Uses of Flowable Slurry
Containing Coal Ash, Used Foundry Sand, and other Recyclable Products

8:30 a.m. Registration

9:15 Introduction. Trent A. Kohl.

9:20 Engineering properties and mixture proportions of flowable slurry made with coal ash, used foundry sand, wood ash, crushed glass, on-site materials, etc. (physical & chemical properties, strength, shrinkage, permeability, thermal & electrical resistance, typical mixtures, etc.) Tarun R. Naik.

10:10 Break

10:20 Practical applications for flowable slurry in backfilling of excavations, trenches, and underground voids - actual field experiences. Effect of mixture proportions on setting characteristics, placement, and field tests. Bruce W. Ramme.

11:05 Technical and marketing issues related to flowable fly ash slurry. LaVerne Weber.

11:35 Practical applications of lightweight flowable fill. Frances A. McNeal.

12:00 Lunch

1:00 Regulatory perspective on flowable fill. Bizhan Zia Sheikholeslami.

1:30 Flowable Fill - Current use in the United States and market potential. Samuel S. Tyson.

2:00 Walk over to the Port Washington Slurry Production Plant (3 blocks).

2:15 Visit to Slurry Plant; and Field Demonstration: Slurry placement, hardened slurry excavation, hardening and settlement process, etc. Michael Burks.

3:30 Adjourn

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