How to evaluate concrete core strengths
There are many reasons to take cores of in-place concrete. You might want to know the capacities of the footings and columns in an old building you plan to adapt […]
Insights
ACI PRC-132.1 assigns responsibilities in caring for concrete test specimens
ACI PRC-132.1-22, “Responsibility for the Care of Test Specimens for Acceptance of Concrete“, describes who should do what to ensure accurate acceptance testing. As a TechNote rather than a standard […]
ASTM C1077
ASTM C1077 is the “Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation.” Agencies such as AASHTO provide independent accreditation […]
Prescription to performance
As part of its Prescription to Performance (P2P) initiative, the National Ready Mixed Concrete Association surveyed its members. They wanted to know which prescriptive requirements kept them from optimizing concrete. […]
Recycling wind turbine blades
The rise of wind power has been crucial in reducing carbon dioxide emissions and tackling climate change. Minnesota has been a leader in deploying wind turbines, and wind accounted for […]
Rebuilding for resilience in Pakistan
We’ve discussed in previous blogs how rebuilding after a natural disaster could mean continuing to do the same thing while expecting the results to be different. The problem is becoming […]
Overdesign and sustainability
Acceptance of concrete delivered to the job site is usually on the basis of compressive strength tests in accordance with ASTM C31 and ASTM C39. To compensate for variability in […]
Is rebuilding always better?
Now that the 2022 hurricane season is over, rebuilding is underway. Because of its intensity and where it made landfall, Hurricane Ian was the costliest weather event in Florida’s history. […]
Zoning for affordable housing
Traditionally in the US, home ownership has been the main vehicle for building wealth. However, in many cities the high cost of housing prevents would-be buyers from entering the market. […]