Guidelines for Greening Your Concrete Specifications
Suggestions for adding green building related requirements to your concrete specifications are noted referencing the appropriate articles and paragraphs within the MASTERSPEC®
section as a guideline.
For information about AIA's MASTERSPEC contact ARCOM at (800) 424-5080 or visit www.arcomnet.com. Manufacturer and product listings are provided as a starting point. Users are encouraged to research products before specifying. GreenSpec, available at buildinggreen.com, provides a current listing of green building products.
SECTION 03450 - ARCHITECTURAL PRECAST CONCRETE
PART 1 – GENERAL
For LEED Projects – see Division 1 Section ‘LEED Requirements Summary’ for recommendations and requirements for recycled content, regional materials, FSC certified formwork, low-emitting concrete finishes and LEED submittal requirements for all concrete materials
Submittals for Environmental Performance:1. Provide data indicating the percentage of post-industrial pozzolan (fly ash, blast furnace slag) cement substitution as a percentage of the full product composite by weight.
2. Provide data indicating the percentage of post-industrial and post-consumer recycled content aggregate
3. Provide product data indicating the percentage of post-consumer recycled steel content in each type of steel reinforcement as a percentage of the full product composite by weight.
4. Provide product data stating the location where all products were manufactured and where the raw materials were harvested, extracted or recovered.
5. For projects using FSC certified formwork, provide chain-of-custody documentation for all certified wood products.
6. For projects using reusable formwork, provide data showing how formwork is reused.
7. Provide MSDS product information data showing that form release agents meet any environmental performance goals such as using vegetable and soy based products.
PART 2 – PRODUCTS
2.1 REINFORCING MATERIALS
Consider specification of reinforcement bar and welded-wire steel with a high percentage of post-consumer recycled content (80%-100%) to avoid the environmental impact of the extraction of raw materials and to divert waste materials from our landfills.
Specify reinforcement supports with 100% recycled plastic content.
1. Rebar Supports, Eclipse Plastics Inc.
2.2 CONCRETE MATERIALS
B. Supplementary Cementitious Materials
4. Ground Granulated Blast Furnace Slag
Consider the highest allowable percentage of cement substitution with coal fly ash, blast-furnace slag, or silica fume.
1. Boral Material Technologies Inc.
2. Full Circle Solutions Inc.
3. Headwater Resources, Inc.
4. Holcim US, Inc.
5. Lafarge North America
6. Mineral Resource Technologies, LLC
7. Mineral Solutions, Inc.
8. The SEFA Group
D. Coloring Admixture
Consider the use of natural clay or mineral based pigments.
1. Davis Colors
2. Dynamic Color Solutions.
3. EnvironOxide Pigments
F. Chemical Admixtures
Consider the use of admixtures that offer high performance to increase durability of the finish product but also have low toxicity and are made from bio-based materials such as soy, and emit low levels of Volatile Organic Compounds (VOC).
2.3 Steel Connection Materials
Consider the use of steel connection materials made with a high percentage of post-consumer recycled content to avoid the environmental impact of the extraction of raw materials and to divert waste materials from our landfills.
M. Shop-Primed Finish
Consider anti-corrosive paints that emit low levels of Volatile Organic Compounds (VOC) (less that 250g/l) and do not contain toxic chemicals in order to reduce health risks to workers and building occupants, and reduce pollutants that contribute to smog.
1. American Formulating & Manufacturing
2. Corrosion Control Industries
3. Fuhr International LLC
2.4 Grout Materials
Consider the highest percentage of post-industrial recycled content including coal fly ash, blast furnace slag , silica fume substitution for cement content of grout mixtures.
PART 3 - EXECUTION
Consider using biodegradable, biobased concrete cleaning products.
Portland Cement Association ("PCA") is a not-for-profit organization and provides this publication solely for the continuing education of qualified professionals. THIS PUBLICATION SHOULD ONLY BE USED BY QUALIFIED PROFESSIONALS who possess all required license(s), who are competent to evaluate the significance and limitations of the information provided herein, and who accept total responsibility for the application of this information. OTHER READERS SHOULD OBTAIN ASSISTANCE FROM A QUALIFIED PROFESSIONAL BEFORE PROCEEDING.