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The Swedish Cement and Concrete Research Institute Study on the Reduction of Radon Gas in Concrete Using Hycrete Shows a 35% Reduction in Radon Exhalation in Concrete
  • USA - English

Hycrete, Inc., a leader in moisture and corrosion protection technologies in concrete, is proud to announce the release of a Swedish Cement and Concrete Research Institute report detailing Hycrete's hydrophobic admixture and its effect on radon exhalation rates of concrete. The study, which spanned 22 months, showed that concrete containing Hycrete reduced radon exhalation by 35% compared to the control.


News provided by

Hycrete, Inc.

May 03, 2021, 11:00 ET

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FAIRFIELD, N.J., May 3, 2021 /PRNewswire-PRWeb/ -- Hycrete, Inc., a leader in moisture and corrosion protection technologies in concrete, is proud to announce the release of a Swedish Cement and Concrete Research Institute report detailing Hycrete's hydrophobic admixture and its effect on radon exhalation rates of concrete. The study, which spanned 22 months, showed that concrete containing Hycrete reduced radon exhalation by 35% compared to the control.

Radon is a mono-atomic gas that is the second-largest cause of lung cancer in the world. Radon gas is released by the natural decay of minerals commonly found in soil, granite, and building materials such as concrete. The study found that the primary parameters of radon exhalation in building materials are; permeability, porosity, moisture, pressure gradient, and temperature of the material. Due to the controlled nature of the study, temperature and pressure gradient were set equal to focus on the effects of permeability, porosity, and moisture content as a transport mechanism for radon.

A typical strategy to reduce radon exhalation is to add fly ash to the concrete mix. As the world transitions away from the use of coal-fired electrical generation once reliable sources of fly ash are becoming harder to secure and alternative strategies need to be found.

The study aimed to find an admixture that could hinder the free transport of moisture and radon through concrete. The researchers theorized that an additive that could hinder the free transport of water from the concrete surface by clogging the pores might directly affect the radon diffusion rate within concrete. Experiments were devised to test this hypothesis and to evaluate Hycrete's effectiveness at lowering radon diffusion in comparison to fly ash.

Three identical concrete samples were placed through a series of testing where the only difference in the mixes was the addition of Hycrete to one sample, and the substitution of Portland cement with fly ash in another. The third concrete cube was used as a control. The three cubes were cured in a water bath for one week and then stored in a conditioning room at 23°C and 50% RH (relative humidity) for 22 months. Measurements were taken using an ATMOS 33 ionizing pulsation chamber at 5 different occasions to measure the exhalation rate of radon in the three samples.

Hycrete outperformed the fly ash mix by 25% and a 39% improvement over the control in moist concrete conditions with a higher RH value (77.5 %+).

Researchers concluded it is likely that the use of Hycrete corrosion inhibitor strongly reduces the diffusion length of radon and less radon is able to reach the surface. Using the Hycrete additive may have a substantial impact on the radon gas exhalation rate of concrete and consequently the radon gas level within a room. The results demonstrated the significance and effectiveness of an additive to reduce radon levels in building materials.

To see the complete study, please visit https://sciendo.com/article/10.2478/ncr-2018-0002

For additional Testing Information, please see our testing summary: http://www.hycrete.com/files/documentation/general/Hycrete-Testing-Summary.pdf

For more Hycrete information, please visit http://www.hycrete.com.

About Hycrete Inc.

Based in Fairfield, N.J., Hycrete, Inc. provides concrete producers, builders, designers, and owners with modern concrete construction technologies that deliver long-term water, vapor and corrosion protection. Hycrete's sustainable solutions, backed by industry-leading warranties, accelerate construction schedules, deliver cost savings and provide peace of mind. The company delivers integral waterproofing that eliminates the need for external membranes and offers admixtures designed to enhance concrete durability and keep water out of structures. The company focuses on sub-grade, grade, and super-grade water, vapor and corrosion protection. Applications include deep foundation slabs and walls, podium and plaza decks, water features, green roofs, water treatment, parking and tunnel structures. For more information, please visit http://www.hycrete.com.

Media Contact

Michael Munoz, Hycrete, Inc., +1 201-386-8110 Ext: 0, [email protected]

SOURCE Hycrete, Inc.

Related Links

http://www.hycrete.com

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Hycrete Press Release - Reduction of Radon Exhalation in Concrete
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Hycrete Press Release - Reduction of Radon Exhalation in Concrete
Hycrete Hydrophobic Barriers in Concrete – Fluorescence Microscopy testing conducted by the Swedish Concrete Research Institute.
Hycrete Hydrophobic Barriers in Concrete – Fluorescence Microscopy testing conducted by the Swedish Concrete Research Institute.
Hycrete Press Release - Reduction of Radon Exhalation in Concrete Hycrete Hydrophobic Barriers in Concrete – Fluorescence Microscopy testing conducted by the Swedish Concrete Research Institute.

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