Consider the following scenarios for a project on which the specified compressive strength (fc’) is 3,500 psi at 28 days. These are all examples of incorrect interpretations of the acceptance criteria ...

American Association of State Highway and Transportation Officials’ Committee on Materials and Pavements approves Purdue-invented method as a national standard for estimating concrete strength WEST ...

Researchers around the world are working to find ways to make concrete greener, including at the University of Pennsylvania.

There are three primary objectives for cold weather concreting: 1) protect the newly placed concrete from early-age freezing, 2) protect concrete to ensure adequate strength development, and 3) ...

Stress is defined as the force per unit area. Thus, the formula for calculating stress is: Where σ denotes stress, F is load and A is the cross sectional area. The most commonly used units for stress ...

Researchers have identified a promising way to recycle used tires by incorporating their components directly into concrete — a method that not only improves material performance but also reduces ...