Technical

July 10, 2023 – The American Society of Concrete Contractors (ASCC), St. Louis, has published its first ALERT!, a new bulletin to apprise members of issues and developments in the concrete construction industry. The first ALERT! covers Portland-Limestone Cement Concrete. “ALERT! bulletins will be published as needed to provide timely notice of unusual, challenging, and sometimes comple...

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May 22, 2023 – The American Society of Concrete Contractors (ASCC) announced that Bruce Suprenant, P.E., PhD., FACI, and Bev Garnant, HACI, have been retained to develop and manage the association’s sustainability initiative. Suprenant and Garnant are ASCC’s former technical director and executive director respectively.

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Jim Klinger, Concrete Construction Specialist The Voice Newsletter May 2023 Question:  We are building a post-tensioned (PT) concrete parking garage that features 3 levels below grade and 4 levels above street level. We bid the job to a General Contractor (GC) who in turn is working for a private developer. At bid time, the requirements for the quality of formwork and allowable deviations ...

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Mike Hernandez, Technical Director The Voice Newsletter May 2023 ASCC had a great Committee Week May 1st – 3rd in St. Louis both technically and socially. The Manufacturers Advisory Council discussed several issues including the need to bring new talent into the construction industry. We have an aging workforce and are losing people to retirement. Members encouraged one another to prov...

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Jim Klinger, Concrete Construction Specialist The Voice Newsletter April 2023 Full Disclosure: Every once in a while, we field ASCC Hotline calls that appear straightforward at first but quickly elevate into interesting exercises in onion-peeling. In this case, it takes a little bit of wordsmithing to arrive at truth's upper floor and save our ASCC Hotline callers from making a mistake or t...

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Jim Klinger, Concrete Construction Specialist The Voice Newsletter March 2023 Full Disclosure: To recap our column that appeared in last month's ASCC VOICE newsletter (Feb. 2023, "Guidance for Concrete Contractors, #14 in a Series"): we introduced and explained issues related to the performance of the "new" ASTM C595 Type 1L portland-limestone cement, hereinafter referre...

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Mike Hernandez, technical director The Voice Newsletter March 2023 ASCC has been an organization that I have admired for years. I am thrilled to be the new ASCC Technical Director. I have been blessed to work with a lot of great teams on projects in the last 25+ years from a few thousand sf of commercial building additions to bridges, airport terminals, high rises and an NFL stadium. A successf...

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Jim Klinger, The Voice Newsletter February 2023 Full Disclosure: Over the past year, the ASCC Technical Division fielded several Hotline calls from members experiencing difficulties related to ASTM C 595 portland-limestone cement Type1L, hereinafter referred to as "PLC" (as opposed to "OPC", ordinary portland cements, brand X,ASTM C 150 Types I and I/II and so on). At fir...

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January 25, 2023 – Michael G. Hernandez, P.E., DBIA, has joined the Technical Division of the American Society of Concrete Contractors (ASCC), St. Louis, MO, as technical director. This position oversees all technical activities of the organization including serving as the technical voice for ASCC in verbal and written communication, providing technical support for the members and the organi...

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Jim Klinger, concrete construction specialist The Voice Newsletter January 2023 ASCC Hotline Question: We are building a post-tensioned concrete high rise with a 30,000-sffootprint divided into three placements per floor level of 10,000-sf each. One such placement atthe 5th floor level is scheduled for Thursday, December 22. For supply-chain reasons, thisconcrete placement date cannot change...

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