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1. Brighter and Better ConcreteWhite Cement and Concrete Whiteners ACI Committee 124 – Concrete Aesthetics ACI National Convention, March 16, 2004 Michael Chusid, RA, FCSI
3. Portland Cement yields a Range of Concrete Shades...
4. …Including White.
5. A Heritage of White Concrete Bahai Temple
Designed 1912, Completed 1951
Wilmette, IL
6. The Tradition Continues Auditorio de Tenerife
Completed 2003, Canary Islands
7. The Tradition Continues Dives in Misericordia
Completed 2003, Rome
8. The Tradition Continues Our Lady of the Angeles
Completed 2002, Los Angeles
Illustrate each type of work with a quick succession of photos
Illustrate each type of work with a quick succession of photos
9. More Colorful Colors Adding MetaMax lightens the cementitious mixture (top), producing brighter concrete and more vibrant colors.
Adding MetaMax lightens the cementitious mixture (top), producing brighter concrete and more vibrant colors.
10. Concrete has Become a Fashionable Finish
11. Higher Albedo Reduces Solar Heat Gain
12. Improved Lighting Efficiency
13. Better Visibility for Improved Safety
14. Avoid Life-Cycle Cost & Environmental Impact of Coating
15. White Portland Cement and Select Aggregates
16. Concrete Whiteners Titanium Dioxide Pigment
Whiten/Brighten Concrete
White Supplementary Cementitious Materials and Pozzolans
Whiten/Brighten Concrete
Improve Strength and Durability
Modify Workability
17. Concrete Is Formed By A Chemical Reaction Portland cement hydration produces Calcium Silicate Hydrate (CSH) + Lime. CSH is the “glue”, the cementitious compound, that holds concrete together.
18. Lime Is Not Beneficial To Concrete Lime does not bind with concrete.
Lime contributes to problems such as:
Efflorescence.
Porosity.
Alkali Silica Reaction
Deterioration.
19. Positively Pozzolanic Pozzolans converts free lime into additional CSH, improving concrete strength, density, and durability.
20. High Reactivity Metakaolin (HRM) is a Bright White Pozzolan Most pozzolans are dark or industrial byproducts not controlled for color consistency.
High Reactivity Metakaolin (HRM) has “Hunter L” whiteness > 90 (100 is maximum) and is manufactured for color uniformity.
21. What is High Reactivity Metakaolin?
22. Visual Impact of High Reactivity Metakaolin
23. Higher Early and Ultimate Strength
24. Reduce Chloride Ion Penetration to Improve Durability
25. Control Alkali Silica Reaction (ASR)
Most glass (silica) is reactive in concrete.
Adding HRM enables glass to be used as aggregate.
Thousands of tons of glass can now be recycled annually.
26. HRM Controls Efflorescence
27. Improve Workability and Reduce Mottling
28. CASE STUDY – Museum of Modern Art Boutique “HRM made the concrete creamier and more consistent so we could create an ultra smooth surface without flow lines or objectionable blemishes.”
Alan Bouknight
Azzarone Contracting Corp.
Mineola, NY
29. CASE STUDY – Museum of Modern Art Boutique “Using white portland cement and metakaolin, we can produce beautiful opalescent finishes and get just the shade we need.”
Alan Bouknight
Azzarone Contracting Corp.,
Mineola, NY
30. CASE STUDY – Shepard Hall, City College of New York “Metakaolin produced an extremely dense architectural surface that was much less affected by the kinds of environmental attacks we expect in today’s world.”
Carl Stein, FAIA
Stein White Nelligan Architects, LLC
New York, NY
31. CASE STUDY – Shepard Hall, City College of New York “Traditional GFRC mixtures aren’t very consistent, and you tend to get gaps at small details. Metakaolin, however, improves the workability of the concrete.”
Mike McCloud
MJM Studios of NY, Inc.
32. Concrete Sculpture and Jewelry No project is too small…
33. Proposed Fehmarn Bridge from Denmark to Germany …or too big.
34. For More Information:www.engelhard.com/metamax.htm800-758-9567 ext. 5398Thank You. MetaMax® HRM
High Reactivity Metakaolin
35. NOTICES METAMAX HRM® IS A REGISTERED TRADEMARK OF ENGELHARD CORPORATION.
PROJECTS ILLUSTRATED IN PRESENTATION ARE REPRESENTATIVE OF WHAT CAN BE PRODUCED WITH METAMAX. NOT ALL PROJECTS SHOWN, HOWEVER, ACTUALLY CONTAIN METAMAX. PHOTO COPYRIGHTS BELONG TO THEIR RESPECTIVE OWNERS.
COPYRIGHT 2004 BY ENGELHARD CORPORATION.
Thank you to Davis Colors and the Portland Cement Association for the use of their copyright images.
Presentation design by Chusid Associates, www.chusid.com