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Annotations based on MasterSpec 03471
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ConcreteThinker.com
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 03471 - TILT-UP CONCRETE

PART 1 – GENERAL

1.1 – SUMMARY

B. 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

1.2 SUBMITTALS

F. 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 FORMS

Consider the use of FSC certified plywood formwork which can be readily available with careful planning, the reuse of form lumber for building sheathing or consider reusable metal formwork.

2.2 FORM RELEASE AGENTS

Consider the use of water, vegetable, or soy based form release agents in lieu of petroleum based products. Consider agents that contain low or no Volatile Organic Compounds (VOC).
AvailableProducts:

1. Bio-Form, Leahy-Wolf Company
2. Crete-Lease 20-VOC, Cresset Chemical Company
3. Duogard II, W.R. Meadows, Inc.
4. Envirofrom and Aquastrip, Conspec.
5. FORMSHIELD WB, Tamms Industries
6. Greenplus Form Release Agent ES, Greenland Corporation
7. Soy Form Release and Natural Form Oil, Natural Soy, LLC
8. SOYsolv Concrete Form Release Agent, SOYsolv

2.3 STEEL REINFORCEMENT

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.

F. Bar Supports:

Specify reinforcement supports with 100% recycled plastic content.

AvailableProducts:

Rebar Supports, Eclipse Plastics Inc.

2.4 CONCRETE MATERIALS

A. Cementitious Materials

1. Portland Cement

A. Fly Ash: ASTMC618, Class[C] [F]. (20% min)

B. Ground Granulated Blast-Furnace Slag: ASTMC989, Grade100 or 120. (50% min.)

Consider the highest allowable percentage of cement substitution with coal fly ash, or blast-furnace slag. Consider higher percentages for applications and construction schedules that will allow a longer curing time. Be sure the concrete mixes are properly engineered for each application.

Available Manufacturers:

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

B. Course Aggregate

Consider a high percentage (25% typical) of the use of local and recycled aggregate from crushed asphalt or recycled concrete sources.

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).

G. Color Pigment

Consider the use of natural clay or mineral based pigments.

AvailableManufacturers:

1. Davis Colors.
2. EnvironOxide Pigments
3. Recycled Glass Powder Concrete Colorant

2.6 CURING MATERIALS

E. Consider the use of water based or vegetable or soy based curing agents in lieu of petroleum based products. Consider agents that are not toxic and emit low or no Volatile Organic Compounds (VOC). 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).

Available Manufacturers:

1. Cure and Seal, Natural Soy, LLC
2. Masterkure 100W and 200W, Debussa Building Systems/ MBT
3. SOYsolv Concrete Curing Agent, SOYsolv
4. Sealtight Green Line, W.R. Meadows, Inc.

2.7 MISCELLANEOUS MATERIAL

D. Cement Grout

Consider the highest allowable percentage of cement substitution with coal fly ash, or blast-furnace slag.

 

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.