Floor flatness and levelness
Floor flatness and levelness matter in such applications as manufacturing facilities, big box stores, and warehouses. ACI 117.1R-14 defines floor flatness (Ff) as “deviation of a surface from a plane” […]
Insights
Who is an author?
In technical writing the question of who is an author is more important than you might realize. Although the obvious answer is that it’s the person who wrote the report, […]
Thermal control plans for mass concrete
Specifications for mass concrete require thermal control plans to minimize cracking. Traditionally, mass concrete meant dams. But other structures may be large enough—or have enough portland cement—to treat as mass […]
Biomimicry: reverse engineering nature
Biomimicry comes in two forms. The first is simple imitation of the appearance of nature. The ancient Greeks proportioned their buildings according to the golden ratio φ = (1 +√5)/2, […]
Resilient engineering for climate change
Resilient engineering is design of infrastructure to withstand and recover from such major hazard events as earthquakes, hurricanes, floods, and wildfires. It goes beyond design for life safety. It also […]
What is a pooled sample?
The engineers’ code of ethics requires us to “hold paramount the safety, health, and welfare of the public“. Here’s one way public health officials use statistics to do just that. […]
New product innovation Q & A
Q: I’M INTERESTED IN DEVELOPING A NEW CEMENTITIOUS PRODUCT BUT NEED HELP FIGURING OUT A FORMULATION TO MEET THE SPECIFICATIONS. IS THIS SOMETHING BETON HAS EXPERIENCE WITH? A: The products […]
Death by PowerPoint
One of the most memorable presentations I ever attended was at once both a highly engaging talk about archeometry and a parody of bad presentations. (In case you didn’t know, […]
ASTM C1866 Promotes sustainability
A new standard, ASTM C1866, specifies ground glass for use in concrete. It’s part of a trend to promote sustainability by making use of marginal and recycled materials in concrete. […]
When concrete cures at elevated temperatures
In our blogs about mass concrete and hot-weather concreting, we’ve alluded to what happens when concrete cures at elevated temperatures. Now let’s take a look at the materials science behind […]