FIND A CONTRACTOR BUYER'S GUIDE
BECOME AN INDUSTRY PARTNER
MCAA Logo
MEMBER LOGIN JOIN
NEWS
The 2026 MCAA Annual Online Auction is Now Open ↗

User’s Guide to ASTM Specification C94/C94M on Ready-Mixed Concrete

Words: Marshall AnhaltAn updated edition of Manual 49, User’s Guide to ASTM Specification C94/C94M on Ready-Mixed Concrete, 2nd Edition, is now available in print and online.

Co-published by ASTM International and the National Ready-Mixed Concrete Association, this new edition represents a significant re-write of all portions of the book. It includes 22 comprehensive chapters that explain every aspect of ASTM C94, the "reference standard" for the industry.

ASTM C94 covers the complex subject of ordering, production and delivery of ready-mixed concrete. There have been many changes and improvements to C94 since the first edition of this manual was printed, especially in the technology for production and delivery of concrete. Manual 49 provides tips and advice and has numerical examples, photos and figures to illustrate proper procedures and implications when C94 is cited in project specifications.

Manual 49, User’s Guide to ASTM Specification C94/C94M on Ready-Mixed Concrete, 2nd Edition, is available for $89 USD in print (978-0-8031-7054-4; Stock # MNL49-2ND) or as an e-book (ISBN: 978-0-8031-7055-1; Stock #: MNL49-2ND-EB).

To purchase ASTM publications, search by stock number on the ASTM Web site (>www.astm.org), or contact ASTM Customer Relations (phone: 877-909-ASTM; sales@astm.org).
 0
Is Contact with Wet Mortar or Grout Dangerous?
April 2026

In the world of masonry, few materials are as common as mortar and grout. Whether you are laying brick, concrete masonry units (CMU), or pouring grout into masonry walls, wet cement and mortar are constant companions. However, beneath their utility lies a

Zach Everett
Technical Talks
Read More
The Importance of Instructor Support
April 2026

Whether you are a new or veteran masonry instructor, we all need support throughout our careers. We can never stop learning, and keeping up with ever-changing technology, materials, and installation techniques can be overwhelming alongside the everyday pr

Curtis Hoover
Resources
Read More
Vibing Masonry #11: Innovative Concrete Masonry Technologies in Healthcare Design
April 2026

In the high-stakes environment of healthcare design, every material choice is a clinical decision. Architects, engineers, and facility administrators are tasked with creating spaces that are not only resilient and code-compliant but also conducive to heal

Steve Blye
Technical Talks
Read More
Why Termination Bars Still Matter: A Practical Look at Long‑Term Flashing Performance
April 2026

In recent discussions across the masonry industry, I have heard termination bars described as “old school.” The implication is that with modern materials, primerless peel-and-stick flashings, advanced sealants, and structural insulated sheathing, mechanic

Linda Potter
Technical Talks
Read More