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

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:4/11/2017)... 11, 2017 No two people are ... the New York University Tandon School of Engineering ... found that partial similarities between prints are common ... mobile phones and other electronic devices can be ... vulnerability lies in the fact that fingerprint-based authentication ...
(Date:4/5/2017)... LONDON , April 4, 2017 KEY ... is anticipated to expand at a CAGR of 25.76% ... neurodegenerative diseases is the primary factor for the growth ... full report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The ... of product, technology, application, and geography. The stem cell ...
(Date:3/30/2017)... NEW YORK , March 30, 2017 ... by type (physiological and behavioral), by technology (fingerprint, AFIS, ... recognition, voice recognition, and others), by end use industry ... travel and immigration, financial and banking, and others), and ... Europe , Asia Pacific ...
Breaking Biology News(10 mins):
(Date:6/19/2017)... ... June 19, 2017 , ... Tunnell Consulting has been solving the ... the biggest challenges faced by life sciences, biotech and pharmaceuticals companies today is in ... Kati Abraham , who is well known in the industry and brings significant high-level ...
(Date:6/16/2017)... ... 16, 2017 , ... Cambridge Semantics , the leading ... Smart Data Lake® (Anzo SDL) solution was named a finalist in the ... Information Industry Association (SIIA) CODiE Awards. , Finalists represent the best products, ...
(Date:6/15/2017)... , ... June 15, 2017 , ... ... has secured a Series B round of financing in the amount of $6 ... of private investors participated in the round. , The Series B funding will ...
(Date:6/15/2017)... ... June 15, 2017 , ... ... DuPont Biofuels, will be speaking at Bloomberg’s 2017 Sustainable Business Summit: Seattle ... leading environmental and sustainability officials on a panel titled “Developing a Corporate Renewables ...
Breaking Biology Technology: