Navigation Links
Inexpensive new instruments test building sealants under real-world conditions
Date:4/5/2011

Washington, D.C. (April 5, 2011) -- Sealants, like weather stripping, are what separates the inside from the outside of a building, byproviding a barrier that prevents water from seeping in, for example, or heat from leaking out. The challenge, says research chemist Christopher White of the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland, is predicting when they will fail.

Current methods test sealants statically, by placing them outdoors for long periods of time, to measure their resistance to the elements. The problem, says White, is that under normal conditions, sealants are also affected by constant movement: the temperature-induced expansion and contraction of the different kinds ofmaterials they seal togethersuch as glass, in a window, and steel, in the window and building frame. "When you put sealant on a building, it is because the glass window and steel frame expand and contract at different rates with changes in temperature," he explains. "The sealant needs to be able to seal this gap, as it changes." This creates fatigue in the sealant, eventually causing it to crack and fail.

Using simple materials that can largely be purchased from a hardware storeincluding PVC pipe, wood, steel supporting frames, and toilet flangesWhite and his colleagues have developed the first instruments to test sealants under real-world conditions, while monitoring their displacement and load with sensors and tracking environmental conditions with a weather station. "This new devicewhich is very inexpensiveinduces movement that is very similar to what a sealant would see in the actual application, in a building," he says.

The designs of the two devicesone that puts sealants in tension and one that puts them in compression when coldhave been passed along to an industrial consortium of sealant manufacturers working with NIST. "Two companies have actually built and are using them for sealant testing," says White.


'/>"/>
Contact: Charles Blue
cblue@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

Page: 1 2

Related biology news :

1. DEIMOS joins MARS and its satellite of instruments on seafloor
2. National Instruments and DENSO Robotics Collaborate to Address New Applications in Industrial Robotics
3. National Instruments and DENSO Robotics Collaborate to Address New Applications in Industrial Robotics
4. Quickly and easily integrate fingerprint biometric features into portable applications with Texas Instruments comprehensive, low cost fingerprint development kit
5. Building a better bee
6. Building the blood-brain barrier
7. Building better bones and tissue in the lab
8. Cell-building discovery could reduce need for some animal research
9. Building strong bones: Running may provide more benefits than resistance training, MU study finds
10. CSHL researchers pinpoint structure-building role for 2 non-coding RNAs
11. Brain building: Study shows brain growth tied to cell division in mouse embryos
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/14/2014)... to the discovery and description of Rhipidocyrtus muiri ... turned out to represent a new genus and species. The ... from Borneo is discussed in a recent paper published in ... The holotype male, and only known specimen of Rhipidocyrtus ... subsequent to this it was transferred among several researchers in ...
(Date:7/14/2014)... consequence of aging? , Although it is widely thought ... risk of developing several common cancers decreases with age. ... decrease with age in the risk of developing certain ... puzzle was presented in a recent paper published in ... P. Brody of the Department of Biomedical Engineering at ...
(Date:7/13/2014)... A new study in women suggests that experiencing one ... single high-fat meal can slow the body,s metabolism, potentially ... about the previous day,s stressors before giving them a ... fat. The scientists then measured their metabolic rate ... and fat and took measures of blood sugar, ...
Breaking Biology News(10 mins):Serendipity at the Smithsonian: The 107-year journey of the beetle Rhipidocyrtus muiri 2Serendipity at the Smithsonian: The 107-year journey of the beetle Rhipidocyrtus muiri 3Weighty issue: Stress and high-fat meals combine to slow metabolism in women 2Weighty issue: Stress and high-fat meals combine to slow metabolism in women 3Weighty issue: Stress and high-fat meals combine to slow metabolism in women 4
... dengue fever will be the early targets of new ... The University of Queensland (UQ) and the University ... after Queensland Premier Anna Bligh announced $650,000 from the ... "Detection of the pathogens of two debilitating ...
... SAN DIEGO, CA (June 18, 2008): Despite recent controversies ... opportunities to create a more sustainable world, with applications ... for industrial and consumer uses, and high quality agricultural ... and technologies to be truly sustainable, they must be ...
... Earth,s periodic mass extinction events such as the sudden demise ... crashing asteroids and sky-darkening super volcanoes as culprits. But ... Nature , suggests that it is the ocean, and ... and sediment over the course of geologic time, that is ...
Cached Biology News:Biotechnology key to developing sustainable industries says international panel 2Biotechnology key to developing sustainable industries says international panel 3The mystery of mass extinctions is no longer murky 2The mystery of mass extinctions is no longer murky 3
(Date:7/13/2014)... 13, 2014 2014 Deep Research Report ... professional and in-depth study on the current state of ... The report provides a basic overview of the industry, ... analysis and Chinese domestic market analysis are provided with ... of the market. A comparison between the international and ...
(Date:7/11/2014)... , July 11, 2014 Research and ... Transfection Technology Market - Global Industry Analysis, Size, Share, ... their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... nucleic acids (either DNA or RNA) into cells. This ... of cancer cells and protein metabolism by affecting the ...
(Date:7/11/2014)... SEATTLE , July 11, 2014  Researchers ... navigate three-dimensional images. The new technology, called Virtual ... of small structures like neurons and synapses using ... Finger,s unique technology makes 3D imaging studies orders ... resources at an unprecedented level across many areas ...
(Date:7/10/2014)... 10, 2014 Deep Knowledge Ventures ... Forum on ‘Commercialising Longevity Research’ and welcomed a ... the London Bioscience Innovation Center for the event, ... Aging Analytics Ltd. The meeting highlighted the need ... research for age-related disease, as well as the ...
Breaking Biology Technology:2014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 22014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 3International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6
... blood, termed ,endometrial regenerative cells, (ERCs) are capable ... of advanced peripheral artery disease. A study published ... Translational Medicine demonstrates that when circulation-blocked mice were ... restored. , Critical limb ischemia, an ...
... SAN JOSE, Calif., Aug. 18 VNUS(R) Medical,Technologies, ... quarter results and,revises its full year 2008 guidance. ... operating expenses and certain balance sheet accounts,to record ... appropriately recorded in prior periods since the adoption ...
... (OTC Bulletin Board: ARNI), a clinical-stage biopharmaceutical company,focused on ... ended June 30, 2008., Net loss was $3.8 ... June 30, 2008, compared to $0.5 million, or $0.05 ... was $7.5 million, or $0.65 per share, for the,six ...
Cached Biology Technology:Limbs saved by menstrual blood stem cells 2VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 2VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 3VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 4Arno Therapeutics Announces Second Quarter 2008 Financial Results 2Arno Therapeutics Announces Second Quarter 2008 Financial Results 3Arno Therapeutics Announces Second Quarter 2008 Financial Results 4Arno Therapeutics Announces Second Quarter 2008 Financial Results 5
Molecular Biological Resources offers bulk quantities of existing protein products. Please see the Chimerx divisions website for existing products and contact lloconne@molbiores.com for pricing....
... 9001:2000 Certified USDA Research Registered OLAW Assured ... Training AALAS Certified Technicians Documentation ... Documentation Upon Request Focus CRP ... all your custom immunology service needs. ...
... BalanceTalk XL provides balance data collection and ... Complete integration with Microsoft Excel , ... moisture analyzers , New balances can be added ... Collect data from multiple balances into one spreadsheet ...
Peptide-affinity Purified Polyclonal Antibody to Sphingolipid Receptor Edg8/S1P5...
Biology Products: