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:9/18/2014)... Our genetic information is stored in DNA, tiny strands ... of our bodies. To express this genetic data, our ... the instructions into proteins that perform tasks in our ... new type of RNA molecule. Unlike all other known ... RNA. Although circRNA molecules are abundant, little has been ...
(Date:9/18/2014)... will be celebrated tonight at the third annual Golden ... health of premature infants and in paving the way ... work was supported by the National Science Foundation, the ... Commission, will be honored at a ceremony at the ... of Members of Congress will be on hand to ...
(Date:9/18/2014)... world, are the ideal animal in which to study ... the ocean into tens of thousands of freshwater streams ... skeleton to adapt to the new environment. , Breeding ... have turned up one of the genes that controls ... that gene,s regulation in a freshwater population is associated ...
Breaking Biology News(10 mins):Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 23rd annual Golden Goose award ceremony honors 8 researchers; Unusual work had big results 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3
... The University of Nottingham have developed a unique technology that ... body,s chemical messenger system for the very first time, live ... helped to attract 1.3 million from the MRC (Medical Research ... insight into the tiny world of activity taking place within ...
... 2008 Researchers at UT Southwestern Medical Center have ... nerve cells for either exercise or antidepressants to reduce ... antidepressants and exercise use the same biochemical pathway to ... some unknown mechanisms of antidepressants and provide a new ...
... the University of York have discovered a new role for ... improved treatments for chronic infections and cancer. Natural Killer ... recognised over 30 years ago as being able to kill ... role for NK cells in activating other white blood cells ...
Cached Biology News:Life under the laser 2Antidepressants need new nerve cells to be effective, UT Southwestern researchers find 2New role for natural killers! 2
(Date:9/19/2014)... NC (PRWEB) September 19, 2014 ... Biobased Product Label for its Organic Cotton . ... product’s amount of renewable biobased ingredients meets or exceeds ... intermediate materials composed in whole or in significant part ... logo/label will allow our Organic cotton to be immediately ...
(Date:9/19/2014)... The new , Healthcare and Life Sciences Review , ... PharmaBoardroom.com for free download , looks beyond the ... in 2009, and the austerity measures that followed, to find ... of trouble. "Despite the crisis, Spain ... the general conditions to invest are favorable to the pharmaceutical ...
(Date:9/18/2014)... -- DeepResearchReports.com adds "2014 Deep Research Report on ... Deep Research Report on Global and China Sodium ... Photo - http://photos.prnewswire.com/prnh/20140918/147058 ... China Acetic Acid Industry" is a professional and ... and Global Acetic Acid Market. The report ...
(Date:9/18/2014)... Texas (PRWEB) September 18, 2014 ... Chancellor John Sharp, Texas A&M Health Science Center ... U.S. Department of Health and Human Services (HHS), ... dedicated a national pandemic influenza vaccine manufacturing facility ... as an anchor for the Texas A&M Biocorridor ...
Breaking Biology Technology:Barnhardt Manufacturing Company Earns USDA Certified Biobased Product Certification and Label for Organic Cotton 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 2Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 4Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4
... Inc.,(Nasdaq: MKSI ), a global provider of ... announced that it will release,third quarter 2008 financial ... 2008. A conference call with management will be ... The call will be broadcast live and,available for ...
... Lieberman, of Harvard Medical School, is a prominent expert ... Courvalin, of the Institut Pasteur, Paris, France, ... Mass., Oct. 6 Cequent Pharmaceuticals, a,pioneer in the ... and treat human disease, announced that two of the,leading ...
... event, NEW HAVEN, Conn., Oct. 6 The ... research community to New Haven, Conn.,March 23 - 24, ... brought 700 scientists,business leaders and students to Hartford last ... cell research and their potential,medical applications. Included in the ...
Cached Biology Technology:Two Luminaries Join Cequent Scientific Advisory Board: Judy Lieberman, M.D. Ph.D., and Patrice Courvalin, M.D. 2Two Luminaries Join Cequent Scientific Advisory Board: Judy Lieberman, M.D. Ph.D., and Patrice Courvalin, M.D. 3Connecticut's Universities Team Up to Host 2009 Stem Cell Symposium 2
... DW4 liquid handling system from Molecular Devices ... in one instrument. The system handles a ... plate washing96-, 384- and 1536-welland is the ... DW4 has been optimized to dispense from ...
... 10 O 2 S 2 ... White crystalline powder Assay: greater than ... IR Melting Point: greater than or ... than or equal to 1% ...
... differences exist between the various commercial and ... slide used, the length and GC content ... the manufacturing protocol employed all influence the ... With all the different variables to ...
... Radiochemical Purity is >95%NEN Radiolabeled Ligands\n\nReceptor-related ... continual availability of new radiolabeled ligands selected ... offers a wide range of products and ... including over 400 state-of-the-art radioligands. If you ...
Biology Products: