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Technical Tip and salts below at the structure/coating interface efflorescence growth or new efflorescence that which, in turn, causes spalling or delamination of develops on an aged structure may be a sign of the coating and often spalling of the upper layer a more serious issue. Avoiding the occurrence of the structure as well. of efflorescence completely in all environments may not be possible. But with the implementa- Conclusions tion of certain construction practices, enhanced Early on, the appearance of efflorescence may mixture designs, and/or the inclusion of a water- be nothing more than an unsightly appearance proofer/ERA/densifier, efflorescence can gener- on the surface of a structure. However, continued ally be controlled. Jonathan E. Dongell is current Contractor (inactive) CBC033127. As Past Presi- Director of Research & Devel- dent of Omega Engineering Consultants, Coral opment, Pebble Technologies, Springs, FL, Werner was involved with solving Scottsdale, AZ. Dongell has moisture intrusion problems in concrete and salt worked in concrete construction attack along the Florida coast for 15 years. and with cementitious materials Werner has authored numerous articles for spanning over 30 years. His Condo Management, WaterShapes, and ASA’s roles have included Technician, Shotcrete magazine, as well as various Technical to Superintendent, to Manager, to Contractor, to White Papers for the Aquron Corporation. He is President. He is Past President, Whitestone also a member of the American Concrete Insti- Cement Company, Scottsdale, AZ (1998-2005) and tute (ACI). Werner’s past associational activities Universal White Cement Co, Inc., Glendale, AZ have been with the ASA Pool & Recreational (1992-1998). He is a member and Past Chair of Shotcrete Committee, American Institute of ACI Committee 524, Plastering, and is a member Timber Construction, American Railway Asso- of ACI Committees 201, Durability of Concrete; ciation, and the American Association for Con- 225, Hydraulic Cements; 232, Fly Ash in Concrete; tamination Control (northeast Publication 308, Curing Concrete; 350, Environmental Engi- Chairman). Recently, Werner was presented with neering Concrete Structures; and 555, Concrete a Life Time Achievement Award from The Aquron with Recycled Materials. Dongell also currently Corporation for his work in creating the Aquatics serves on the ACI Concrete Research Council Division. His association with the Aquron Cor- (CRC) Committee. He is a member of several ASA poration spans over 25 years. A main emphasis Committees and serves on the ASA Pool & Rec- of the Aquatics and other divisions is the pres- reational Shotcrete Committee. He is a member ervation and permanence of concrete and nat- of ASTM International Committees and several ural stone, and the control of efflorescence. ASTM Subcommittees: C4.01, Cement; Lime; Gypsum, and C4.02, Concrete and Aggregates. Dongell is the author of several books, including The Durability of Cementitious Materials in a Water Contact Environment. He is an inventor and holds three patents on cementitious materials. He is a designated expert witness in the fields of STRUCTURAL cement, concrete, stucco/plaster, and water chem- SHOTCRETE istry. He was the recipient of the ACI Delmar L. Bloem Distinguished Service Award in 2008. YSTEMS, INC.S LICENSE #579272 A www.structuralshotcrete.com J.B. Werner is President of Concrete Preservation Systems JASON E. WEINSTEIN, P.E. and Senior Consultant for all VICE PRESIDENT divisions of Aquron Corpora- tion, Rockwall, TX. Werner received his BSCE degree in 12645 CLARK STREET (562) 941-9916 civil engineering and is a SANTA FE SPRINGS, CA 90670 FAX (562) 941-8098 Florida State Certified Building Shotcrete • Summer 2015 47


2015SummerShotcreteEMag
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