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Georgia Chapter ACI, May Newsletter
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May Newsletter

May 2014: Issue 4


Inside This Issue...


 
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Upcoming Events


ACI Masonry Structural Design Seminar
6/4/14

ACI Strength, Aggregate & Lab Tech Exam
6/7/14

Field Tech Grade I Training
6/14/14

Field Tech Grade I Exam
6/21/14

Field Tech Grade I Training
7/12/14

Field Tech Grade I Exam
7/19/14

 

2014 Georgia Chapter Officers:

President:
Vance Robinson
Ready Mix USA

Vice President:
Angela San Martin, P.E.
Metromont

Secretary:
Elizabeth Harwood
GC&PA

Treasurer:
Ralph Hodgins
Retired

Board of Directors:

Steven Maloof
TEC Services, Inc.

 

Howard Allred, P.E., F.ACI
Allred Engineering, LLC

 

Wilbur Bragg II, P.E., CDT
T. Y. Lin International

 

Kelly L. Roberts, P.E., LEED AP
Walter P. Moore

 

Gary Knight
Lehigh Cement


Dr. Wasim Barham
SPSU


Tom Pfeifer, P.E.
Uzun & Case Engineers

 

Immediate Past President
George Harrison
Cardno-ATC

President's Message

I was recently revising a presentation and that began with a definition of concrete. Here is the definition:  A mixture of paste (Cement, Water, Chemical Admixtures, & Other Cementitious Materials) & aggregates (Rock & Sand) that forms a solid mass as the paste hardens. I decided to check the definition using my trusty search engine and came up with a great variety of definitions. Here are a few of the definitions of concrete I found: 

An artificial, stone like material used for various structural purposes, made by mixing cement and various aggregates, as sand, pebbles, gravel, or shale, with water and allowing the mixture to harden. (Dictionary.com) 

A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix. (Thefreedictionary.com) 

An artificial stone made of a mixture of cement, aggregate (hard material), and water. In addition to its potential for immense compressive strength and its ability, when poured, to adapt to virtually any form, concrete is fire-resistant and has become one of the most common building materials in the world. The binder usually used today is Portland cement. The aggregate is usually sand and gravel. Additives called admixtures may be used to accelerate the curing (hardening) process in low temperature conditions. Other admixtures trap air in the concrete or slow shrinkage and increase strength.  (Merriam-Webster)


Early in my career I was told that concrete would be the simplest building material I would ever work with. Then I was told that it would be the most complicated building material, and I would learn something new every day. I think the varied definitions above illustrate the simplicity and complexity of concrete.   Concrete is very simple to design. It is basically as ACI CT-13 - ACI Concrete Terminology states; a mixture of hydraulic cement, aggregates, and water, with or without admixtures, fibers, or other cementitious material.  Concrete is very simple, but as we work with this product we can find many complex combinations to produce a mixture with properties that meet stringent project requirement.  This is the reason I love my job.

 

Thank you,

Vance Robinson
Georgia Chapter ACI, President

Save the Date: Skipper Seminar!

Mark your calendars for this year's Skipper Seminar! The seminar will be held on Tuesday, July 22nd from 8:00 a.m. to 12:00 p.m. The event will take place at Cardno ATC's Marietta location. More details coming s

April Meeting Recap

We had small but attentive good crowd for our April Lunch Meeting.  Ethan Manley and David Linder, both Account Managers with McGraw-Hill gave us a presentation on the “Dodge 2014 Construction Outlook” for Georgia.  Ethan opened with a look at the US Macroeconomic Outlook; he commented that the US GDP remains lackluster with an expected growth rate of 2.7% in 2014.  He equated the slow growth to the continued tepid job market which shows a year to date seasonally adjusted jobless rate of between 6.5 to 7 %.

Ethan then talked about the expect growth in US being very regional in nature, he showed us a map of the US illustrating were unemployment is expected to remain high.  Georgia was listed as being on the high side at +10%.  David took over and talked in more detail about were some of the expected growth would be in Georgia, Single Family, Multi-Residential, Retail, Hotel, Health and Education.  State and Highway construction was mentioned as slowing.  Some specific projects in Georgia were mentioned and a lead development tool from McGraw Hill, Jerde Partnership was discussed. 

The slide deck was made available for our member review.  Chapter President, Vance Robinson, closed with our Georgia Chapter Cup presentation and thanked everyone for their attendance and support.

ACI Masonry Seminar

Atlanta, GA: June 4th 

This one-day seminar is for Engineers, Architects, Specifiers, Public Agencies, and anyone else involved in the designing and specifying of masonry structures. Attendees will learn to design and specify masonry structures using the 2013 edition of Building Code Requirements and Specification for Masonry Structures. Discussion and comparisons of masonry provisions in earlier Codes and the International Building Code will also be presented. Practical design examples of typical masonry building elements will be reviewed as part of this informative seminar. 

More details about the event can be found on ACI National's website.

Membership renewal

Have you renewed your membership? 

Its that time of the year to renew membership in Georgia Chapter, ACI. We hope you've found your membership an opportunity to further your technical knowledge and network with leaders in the concrete community. Annual dues are $40; Student membership dues are $5.

Click here to renew your membership today!

This Month in Concrete International... 

Reprinted from the May 2014 issue of Concrete International with permission from American Concrete Institute (www.concrete.org)

  
This month’s article, A Resistivity-Based Approach to Optimizing Concrete Performance was chosen for reader interest.  Several state and federal agencies have shown interest in adopting surface resistivity (SR) measurement for quality assurance testing. But SR measurement may also be used for assessing and predicting the long-term performance of concrete mixtures during the mixture design stage. As shown in this article, the SR test demonstrates the influence of binder composition on the rate of microstructural development in concrete and can therefore provide a means for assessing future performance…
 

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