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Edison Coatings President Michael P. Edison will present a paper entitled: "Rosendale Natural Cement: Reintroduction of an Authentic North American Historic Binder"
RILEM 2nd HISTORIC MORTARS CONFERENCE
RILEM TC 203-RHM Repair Mortars for Historic Masonry, Final Workshop Prague, Czech Republic
ASSOCIATION FOR PRESERVATION TECHNOLOGY INETERNATIONAL
ANNUAL CONFERENCE, DENVER, COLORADO
Edison Coatings President Michael Edison will co-present a technical paper entitled:
"The Use of Calibrated Digital Photography to Match and
Evaluate Color Differences in Masonry Repairs"
JohnE. Harry, John E. Harry, Restoration Services, Allentown, PA, USA
Michael Edison, Edison Coatings, Inc., Plainville, CT, USA
Abstract
Custom color‐]matching of repair systems and coatings for use in historic masonry restoration work has generally involved removal of existing materials and shipment to the repair system manufacturer's lab.
Challenges within this approach have included:
1. Collection of samples can cause further damage to the structure.
2. Collection of an accurate, representative range of color samples can be difficult.
3. Spectral analysis using spectrophotometers and color‐]matching software is inaccurate for materials that are multi-colored, deeply textured, curved or highly variable.
The maturing of digital imaging technology provides the opportunity to perform
colorimetric measurement with relatively inexpensive, readily available equipment. High quality images from digital single lens reflex cameras (DSLRS) can now be obtained in a color‐]managed environment. For each area and lighting condition, it is possible to
calibrate the color response of the camera. When images are captured in RAW mode, color calibration software can "develop" the information from the sensor into an image that is
color accurate within certain tolerances. Image processing software can then be used to obtain color information in the international standard CIE L* a* b* format for any size area
of the photograph. This data can then be utilized by color-matching software systems.
Winter 2010 Hands-On Workshop TRAINING DATES Programs Completed- Watch for Fall Workshop Dates
The University of Pennsylvania School of Design - Historic Preservation
Program and the APT Delaware Valley Chapter will co-host a full-day "Terra Cotta, Stone Repair & Historic Mortars Workshop"
Philadelphia, PA
Registration, information: http://edison-upenn.eventbrite.com
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SHORT COURSES FOR ARCHITECTS,
CONSULTANTS AND CONSERVATORS Half-Day Continuing Education Courses are offered free-of-charge to Architects, Engineers,
Conservators and Students of Historic Preservation. Each course earns AIA Learning Units (LU's) which qualify as HSW. For sign-up, additional information or registration materials,Contact Us.
PROFESSIONAL CONTINUING EDUCATION COURSES FOR
ARCHITECTS, CONSULTANTS AND FACILITIES MANAGERS:
Mortar 101: Basic Things You Should Know About Masonry Mortar But Were
Confused, Misled or Maybe Just Afraid To Ask (1 LU)
Masonry Restoration & Repointing Materials: Performance & Selection (2 LU)
Color Science in Masonry Restoration (1.5 LU)
Exterior Masonry Coatings Technology (2.5 LU)
Terra Cotta and Stone Repair (1.5 LU's)
The Natural Cement Revival (1 LU)
These Continuing Education Courses can be scheduled for In-House In-Service
Programs.
For complete course description, visit our Training Page. For sign-up, additional information or registration
materials,Contact Us.
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