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 is the “Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation.” As we’ve discussed previously, in the construction […]
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. […]
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 […]
Previously we discussed acceptance testing of concrete according to ASTM C31, Standard Practice for Making and Curing Concrete Test Specimens in the Field and ASTM C39, Standard Test Method for Compressive […]
For quality assurance in concrete construction, the most common acceptance criterion is the compressive strength of the concrete. A field technician makes specimens according to ASTM C31, Standard Practice for […]
At Beton we review project specifications for various reasons. Sometimes it’s to develop concrete mixture proportions that will help a contractor meet the requirements. Sometimes it’s to come up with […]
There are generally three aspects to the performance of a structure. The first is structural. The structure needs to resist the gravitational, wind, and other loads to which it will […]
ASTM C1778, “Standard Guide for Reducing the Risk of Deleterious Alkali-Aggregate Reaction in Concrete,” can help you decide how best to mitigate expansions due to reactive aggregates. It covers both […]
Despite our need for durability and high performance, the most common design criterion for concrete is compressive strength. Usually we specify the 28-day strength, that is, the compressive strength after […]