ACI PRC-327.1-21 PDF Download
Standard EN
In-Place Density Testing of Freshly Placed Roller-Compacted Concrete by Nuclear Gauge Testing -TechNote
Also Known As:
The ACI PRC-327.1-21 standard provides guidelines for determining the in-place density of freshly placed roller-compacted concrete (RCC) using nuclear gauge testing. This standard is based on ASTM C1040/C1040M, which establishes the proper procedure for measuring the in-place density of both unhardened and hardened concrete, including RCC.
The ACI PRC-327.1-21 standard outlines the use of nuclear gauge testing as the preferred method for determining the in-place density of RCC. It provides detailed instructions for conducting the test, including the calibration and verification of the nuclear gauge and the proper placement of the gauge on the concrete surface. The standard also specifies the timing for conducting the test, which is typically within 30 minutes of the RCC placement.
| Descriptors | acceptance testing; backscatter; concrete density; direct transmission; in-place density; nuclear gauge; roller-compacted concrete (RCC). |
| Language(s) | English |
| File Size | 614.4 KB |
