ACI Central Texas Chapter

Concrete Country USA


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Monthly Meeting Topic
Presented by: Tom S. Patty
"50 Years of Forensic Concrete Petrography and Aggregate Studies"
First Meeting of 2019
Thursday January 10, 2019
11:30 am at Casa Chapala

Tom Patty
Tom Patty
Mr. Patty joined WJE in 1981, as manager of the Austin office from 1981-2000. He has completed over 4,500 petrographic and chemical testing investigations. Representative project experience includes concrete petrography and aggregate studies for slabs-on-grade; elevated slabs; parking garages; precast and other architectural components; facades; stucco systems; CMU blocks; faux stone; grouts; mortars, including those from historical structures; and natural building stone. 

Mr. Patty has provided expert testimony for court cases involving geologic occurrences and engineering properties of aggregates and stone. He has made further studies in masonry, efflorescence and cement burns. His knowledge of forensic petrography as well as geological and biological systems has enabled him to testify in civil and criminal cases. 

From 1968 to 1981, Mr. Patty was a research geologist and concrete petrographer for the Materials and Test Division of the TxDOT. His studies resulted in over 25 research and technical publications for the highway department in areas such as engineering properties of constructional aggregates, skid resistance, and concrete petrography. 


Chapter meetings are held on the second Thursday of each month, except during July and August. Meetings are held at 11:30 a.m.

All Lunch Meetings are held at Casa Chapala, 9401 Research Blvd, Bldg #100, Austin, Tx 78758, unless otherwise noted.
A map to the monthly meeting location is to the right.

The new ACI Central Texas Chapter Headquarters is located at

4717 Priem Lane, Pflugerville, Texas 78660.   

A map to the new headquarters locations is shown to the right.

All future technician certifications, including written exams and practical examinations will be held at this location.

Click on the "Board of Directors" Tab at the top of the page to meet your 2019 Board Members.

Concrete Technician 2019 Certification Schedule

For an application and/or details of all the upcoming certification testing, follow the link below.


Hope to see you at the meeting on Thursday.

Welcome to the website of the Central Texas Chapter of the American Concrete Institute.  We are located in Austin, Texas.  The chapter membership is comprised of a diverse group of individuals supporting the central Texas concrete industry including concrete producers, engineers, technicians, concrete material suppliers, university professors, students, and contractors.

We hope you find this site useful in providing current and relevant information about our chapter.  Feel free to contact any of the listed board members for other questions or information.

A list of all 2019 Board of Directors and Officers can be found by following the  link at the top of this page.

Site Updated 1/7/2019
Rev 28289
Send comments to:
David R. Mason, PG
Balcones Geotechnical, LLC