Understand how the concrete mixture design impacts the design, construction, and performance of a structure.
Concrete is frequently viewed as a simple construction material that is specified primarily based on strength. However, concrete is a complicated heterogenous material that must be specified, designed, and proportioned correctly to perform as intended by owners, engineers, and architects over the service life of the structure. Improper mix development and design is responsible for delays and claims on construction projects around the country. This program is intended to educate viewers on the basics of concrete materials and mix development. This presentation will be of benefit for all parties involved with concrete construction including engineers, architects, contractors, subcontractors, design professionals, government administrators, suppliers, and owners / building managers. This topic will review the basic ingredients of a concrete mix design, including mineral and chemical admixtures that are routinely used to change the performance characteristics of concrete. This program also explains how to address durability and desired performance characteristics in the development of concrete mixture proportions. This presentation is critical for parties involved in concrete construction so they can understand how the concrete mixture design impacts the design, construction, and performance of a structure.
Learning Objectives
- You will be able to review the roles and characteristics of basic concrete ingredients.
- You will be able to describe the purpose of different chemical and mineral admixtures and understand their effect on concrete performance.
- You will be able to You will be able toidentify durability design requirements that should be incorporated into the development of a concrete specification or mix design.
- You will be able to discuss how performance characteristics affect concrete mixture proportioning, and how to address them in notes and specifications.
Agenda
Concrete Basic Ingredients
Chemical Admixtures
- Water-Reducers
- Air-Entrainers
- Set Accelerators/Set Retarders
- Corrosion Inhibitors
- Specialty Admixtures
Mineral Admixtures
- Cementitious Materials
- Pozzolanic Materials
- Pozzolanic/Cementitious Materials
- Finely Ground Inert Minerals
Durability Design
- Material-Related Durability
- Performance-Related Durability
Proportioning Concrete Mixtures
- Selection of Materials
- Selection of Proportions
- Weighing/Batching of Materials
- Mixing
- Transporting/Delivery
Speakers
R. Brett Holland, Ph.D., P.E., S.E.,
Simpson Gumpertz & Heger Inc- Senior consulting engineer – structures at Simpson Gumpertz & Heger Inc, a 600-person consulting engineering firm with headquarters in Waltham, MA
- Registered engineer in AL, GA, IL, MA, NY, RI, and TX
- Experienced in the development of high performance concrete (HPC) mix designs for specialized durability or strength requirements
- Experienced in the implementation of specialty concrete performance in design and construction
- Experienced in precast concrete production and troubleshooting assignments
- Experienced in condition assessment, repair, and rehabilitation of existing concrete structures including historic stadiums, parking garages, and transportation structures
- Author of several publications related to the design, durability, and performance of HPC concrete
- Active member of the American Concrete Institute, president of the ACI New England Chapter, Associate Member Committee 201 – Durability of Concrete, Associate Member Committee 236 – Material Science of Concrete, and Voting Member Subcommittee 318-A – Structural Concrete Building Code: Concrete Materials and Construction
- BSCE, MSCE, and Ph.D. degrees, Georgia Institute of Technology
- Can be contacted at rbholland@sgh.com
Linda Seymour,
Simpson Gumpertz & Heger Inc- Project Consultant at Simpson Gumpertz & Heger, Inc., a 750 person consulting engineering firm with headquarters in Waltham, MA
- Experienced in the development of concrete mix designs for a range of applications
- Experienced in the implementation of specialty concrete performance in design and construction
- Experienced in non destructive testing and materials characterization of concrete structures, including heritage structures, parking garages, and industrial facilities
- Experienced in condition assessment, repair, and rehabilitation of existing concrete structures including residential and transportation structures
- Author of several publications related to the durability and performance of concrete and other materials.
- B.S. degree, in Civil Engineering and Ph.D. degree, in Structures and Materials from Massachusetts Institute of Technology
- Active member of the American Society of Civil Engineers, including the Engineering Mechanics Institute
Who Should Attend
This live webinar is designed for contractors, subcontractors, engineers, architects, design professionals, government administrators, suppliers, and anyone involved in concrete construction.
