Notes/Preview

The contents of this course include five recorded presentations from the ACI 2023 Fall Convention:

• High Strength Concrete MOE – Designer’s Perspective, by Jonathan Hurff, Principal, Walter P. Moore

• High Strength Concrete MOE – Contractor’s Perspective, by Pat Barb, Senior Project Manager/Vice President, S&F Concrete Contractors

• 1 Dalton St. Boston – High Strength, High Modulus Concrete, by Mark Liebert, Quality Control Manager, NER - Ready Mix Concrete Division, Holcim US

• UTS of Masssachusetts, Inc. – Modulus of Elasticity Testing, by Mike Garland, Quality Control Manager, UTS of Massachusetts Inc.

• A Consultants Experience – When Projects Go Sideways, by Ben Birch, Senior Engineer, CTL Group

INSTRUCTIONS: Study the materials included in this module. Then, complete and pass the corresponding 10-question quiz with a score of 80% or higher to receive a certificate for 0.1 CEU (equivalent to 1.0 PDH).

Continuing Education Credit: 0.1 CEU (1 PDH)

Approved AIA and ICC

Access Period: 30 days

Description

As high-strength concrete allows us to build taller and bolder structures, designs are becoming highly sensitive to the elastic modulus of the concrete. Recognizing this sensitivity, designers are more frequently specifying the elastic modulus as a quality control requirement. The logistics behind estimating and specifying the modulus, developing the concrete mix design, performing the quality control testing, and interpreting test results have led to issues on projects throughout the U.S. and worldwide.

In this course, a panel of speakers representing designers, producers, contractors, and testing laboratories will discuss their roles and the challenges they have encountered with elastic modulus. After the initial discussion, the course will open the floor to become a roundtable-style discussion with all in attendance.

Document Details

Author: Hurff, Barb, Liebert, Garland, Birch

Publication Year: 2024

ISBN:

Categories: High Performance Concrete, Quality Assurance

Formats: Online Learning

Table of Contents

Learning objectives:

1. Understand the motivation behind the specification of elastic modulus as a quality control requirement on projects.

2. Identify challenges associated with developing and supplying concrete meeting an estimated elastic modulus for high-strength concrete.

3. Discuss the logistical issues associated with testing and acceptance of elastic modulus as a quality control test.

4. Recognize the problems that can arise during construction when as-supplied concrete does not meet the specified elastic modulus and the effects on the overall project.

ERRATA INFO

Any applicable errata are included with individual documents at the time of purchase. Errata are not included for collections or sets of documents such as the ACI Collection. For a listing of and access to all product errata, visit the Errata page.

Return/Exchange Policy

Printed / Hard Copy Products: The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. A 20% service charge applies. Return shipping fees are the customer’s responsibility.

Electronic /Downloaded Products & Online Learning Courses: These items are not eligible for return.

Subscriptions These items are not eligible for return.

Exchanges: Contact ACI’s Customer Services Department for options (+1.248.848.3800 – ACICustomerService@concrete.org).