Previous testing has shown specimens
Posted: Thu Jul 10, 2025 6:27 am
Both RILEM tubes are plastic cylinders that are securely placed against the unit for testing using an impermeable putty. Once the RILEM tube is attached to the CMU, water is placed into the tube up to the 0 ml (0 oz) mark (top of tube).
The RILEM tube is monitored at five-, 10-, 20-, 30-, and 60-minute intervals for any noticeable changes in the water column. that hold water for 20 minutes will also typically hold for 60; this allows for shorter experiments. If 20 percent of the water is lost within a 20-minute interval, the CMU is considered to have failed the test—if such losses are not rcs data observed, then the CMU has passed.**
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A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.
A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.
A standard RILEM tube test has failed on this CMU with integral water repellent.
A standard RILEM tube test has failed on this CMU with integral water repellent.
See NCMA’s, Standard Test Methods for Water Stream and Water Droplet Tests of Concrete Masonry Units from 2009.
See the article, “Testing the Test: Water Absorption with RILEM Tubes,” by Adrian Gerard Saldanha and Doris E. Eichburg in the August 2013 issue of The Construction.
The RILEM tube is monitored at five-, 10-, 20-, 30-, and 60-minute intervals for any noticeable changes in the water column. that hold water for 20 minutes will also typically hold for 60; this allows for shorter experiments. If 20 percent of the water is lost within a 20-minute interval, the CMU is considered to have failed the test—if such losses are not rcs data observed, then the CMU has passed.**
You May Also Like Quick cure coatings with PMMA/PUMA technology
A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.
A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.
A standard RILEM tube test has failed on this CMU with integral water repellent.
A standard RILEM tube test has failed on this CMU with integral water repellent.
See NCMA’s, Standard Test Methods for Water Stream and Water Droplet Tests of Concrete Masonry Units from 2009.
See the article, “Testing the Test: Water Absorption with RILEM Tubes,” by Adrian Gerard Saldanha and Doris E. Eichburg in the August 2013 issue of The Construction.