“Classic” alkali-silica reaction
“Classic” alkali-silica reaction is a reaction between alkalis in cement and reactive silicate minerals in susceptible aggregates. The reaction creates a gel that absorbs water and expands, resulting in the […]
“Classic” alkali-silica reaction is a reaction between alkalis in cement and reactive silicate minerals in susceptible aggregates. The reaction creates a gel that absorbs water and expands, resulting in the […]
Because of the COVID-19 pandemic, Thanksgiving 2020 will look very different from normal. Most of us will have a much smaller gathering than we usually do. One thing that probably […]
Statistics were part of our everyday lives long before anyone had heard of COVID-19. Pick up a newspaper any day of the week and see how many stories you find […]
With increasing urban development and a changing climate, city governments need to consider new ways to manage stormwater. “It’s not easy being green,” a recent paper from the University of […]
The 2019 edition of the California Green Building Standards Code, also known as CALGreen, took effect at the beginning of this year. Its goals include: reducing greenhouse gas emissions from […]
Floor flatness and levelness matter in such applications as manufacturing facilities, big box stores, and warehouses. ACI PRC-117.1R-14 defines floor flatness (Ff) as “deviation of a surface from a plane” […]
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, […]
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 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, […]
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. […]