Durability Web Site Launched

Durability is the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties. Different concretes require different degrees of durability depending on the exposure environment and the properties desired. Concrete ingredients, their proportioning, interactions between them, placing and curing practices, and the service environment determine the ultimate durability and life of the concrete.

Concrete durability is one of the most important considerations in the design of new structures and when assessing the condition of existing structures. PCA’s Durability Web site provides the following resources to assist designers, specifiers, contractors, and educators: (1) Basic information on all durability topics, (2) Test methods, (3) Collection of publications including PCA research reports, (4) PowerPoint presentations and images, (5) Links to other websites and resources on durable concrete.

Click here for the Durability Web site.

This new publication is an instructional guide and basic reference for those responsible for writing and implementing concrete specifications. It covers the basic concepts of concrete technology as it relates to durability, and is intended to be a companion and supplement to Design and Control of Concrete Mixtures. It provides sufficient information to allow the practitioner to select materials and mix design parameters to achieve durable concrete in a variety of environments. It also warns the user when expert help is recommended.
EB221—$30

Combating Shrinkage with Internal Curing– A Research Report (PCA R&D SN2620)

With the increasing use of high-strength concrete in concrete construction, reducing autogenous shrinkage and the potential for self-desiccation (internal drying) is an important research avenue. High-strength concrete, in general, utilizes a larger cement content and lower water-to-cementitious materials ratio. Combined with inadequate curing, the shrinkage and cracking potential can be quite large. The purpose of Hoa Lam’s doctoral research (PCA R&D Serial No. 2620) was to explore different internal curing methods and the use of shrinkage-reducing admixtures (SRA) for the mitigation of autogenous and drying shrinkage. More.

How can I repair a pitted concrete platform surface?

I am a contractor doing a large inside home renovation and have been asked to repair a concrete platform outside this home. The concrete surface is very pitted and full of surface stains. I’m looking for recommendations on procedures and products for a skim coat on the 20ft x 20ft concrete platform.

The two most important issues are (1) the preparation of the slab to achieve an effective bond and (2) choosing a repair material that is compatible with the service condition or climate. More.

Part of a series of training programs on cement and concrete technology, this CD provides an introduction to the effects of hot or cold temperature on the properties of concrete and the general requirements for producing concrete in hot or cold weather.

Fully narrated, with quiz included at the end, the course is designed for cement manufacturers, ready-mix concrete producers, concrete contractors, engineers, consultants, architects, specifiers, and other design professionals dealing with the use of cement and concrete as building materials. More.

Performance-Based Specifications for Concrete

Cement [Manufacturing] Technical Support Library

Limited Time Offer

The PCA R&D department is offering selected research reports for free for a limited time. These publications are ideal for responding to technical service questions; hand-outs at seminars, classes and exhibits; and distribution to customers. These materials are available on a first-come-first-serve basis while supplies last. Shipping charges may apply.

Click here for a list of available publications and order form.