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Hot Weather Concreting

Matthew Stuart, P.E., S.E., P.Eng.

Course Outline

This one hour online course provides a basic understanding of hot weather concrete operations as defined by ACI 305. This course includes definitions, effects and recommendations for hot weather concreting per ACI.

This course includes a multiple choice quiz at the end.

Learning Objective

At the conclusion of this course, the student will:

Course Introduction

This course provides the user with a synopsis of the ACI Code governing hot weather concreting. The course will define the range of conditions associated with hot weather concrete placing operations. Undesirable effects of hot weather on concreting operations, both during placement and after hardening has occurred, will be discussed. Recommendations for the basic procedures to help avoid the effects of hot weather on concrete will also be provided.

Course Content

The course content is contained in the following PDF file:

Hot Weather Concreting

Please click on the above underlined hypertext to view, download or print the document for your study. Because of the large file size, we recommend that you first save the file to your computer by right clicking the mouse and choosing "Save Target As ...", and then open the file in Adobe Acrobat Reader. If you still experience any difficulty in downloading or opening this file, you may need to close some applications or reboot your computer to free up some memory.

If you have trouble reading any of the material on line, it is recommended that the course material be printed out for better resolution.

Course Summary

Placing of concrete during hot weather has the potential to effect both the long term strength and durability of concrete. Hot weather can have a negative impact on both plastic and hardened state of concrete. Hot weather effects all of the major components of concrete including water, cement and aggregates. Hot weather also has an impact on batching, mixing and placing of concrete. Precautions must be taken in advance of concreting operations that are anticipated to be effected by hot weather.

Related Links

For additional technical information related to this subject, please visit the following websites or web pages:

American Concrete Institute
Mayco Hot Weather Concreting Tips


Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.

Take a Quiz

DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered professional engineer. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.