Navigation Links
Using nanoclays to build better asphalt pavement

Long before freeways and parking lots, a naturally occurring asphalt first appeared on roads in about 600 B.C. You can still see patches of it in the ancient city of Babylon.

Under the onslaught of 21st century traffic, modern asphalt isn't likely to hold up for anywhere near 2,700 years. But at Michigan Technological University, Zhanping You is paving the way for brand-new asphalt blends to fight off cracks, rutting and potholes.

One of his papers on the subject made SciVerse ScienceDirect's Top 25 Hottest Articles of 2011 for the journal Construction and Building Materials.

"Nanoclay-Modified Asphalt Materials: Preparation and Characterization" reviews recent literature on asphalt that has been doctored with nanomaterials. It also presents new discoveries from You's team suggesting that adding nanoclays to asphalt materials could make for safer, longer-lasting roadways.

"Asphalt is now made from petroleum, so it's very expensive," said You, an associate professor of civil and environmental engineering. "As a result, a lot of people are looking at ways to make it more durable."

Heat, cold and stress in the form of traffic take their toll on asphalt pavement, made from a mix of asphalt and aggregates like gravel. That leads to cracks, potholes and a process called rutting. Ruts are most likely to form on busy roads, sections with slow traffic, and areas with stop signs and stoplights, where the rubber hits the road hard thousands of times a day.

"Rutting can be very dangerous, especially in snow and ice," You said. "If we could use advanced materials to reduce rutting, that would be very beneficial to the public."

You's team tested two types of nanoclays, adding 2-4 percent by weight to the asphalt. That's a smidgeonless than half of a percent of the total weight of the asphalt pavement itself. But it made a big difference.

"It improved the viscosity significantly," You said. "That means it will provide better stiffness, which means that it won't deform as much in hot weather or under heavy traffic."

They don't yet know if nanoclay can help asphalt resist cracking in cold weather or under heavy loads, since their testing isn't completed. "But it is always our goal to develop new asphalt mixtures with those qualities," You said.

His lab is also testing how other nanomaterials, including nano-silica and nano-composites, will affect asphalt durability.


Contact: Zhanping You
Michigan Technological University

Related biology technology :

1. Genomic Health and OncoMed Announce Strategic Alliance for Biomarker Research and Discovery Using Next Generation Sequencing
2. PubMed Users Now Save Time Accessing and Organizing Scientific Papers by Using Bibliogo From Reprints Desk
3. Slovenias 1st Total Artificial Heart Patient Discharged from UMC Ljubljana Using the Freedom® Portable Driver
4. Eye Surgery Center of Michigan First in Southeast Michigan to Perform Bladeless Cataract Surgery Using New LenSx® Laser Technology
5. Researchers shrink tumors and minimize side effects using tumor-homing peptide to deliver treatment
6. Clinilabs will Conduct Phase 1 Trial Using QTinno®
7. Synthetic Genomics Inc. and Plenus, S.A. de C.V. Form New Sustainable Agriculture Company, Agradis, Inc. to Develop and Commercialize Products Using Genomic Technologies
8. Cord Blood America Provides Insight on Worldwide Research Using Umbilical Cord Blood Stem Cells to Treat Numerous Diseases
9. Using new technique, scientists uncover a delicate magnetic balance for superconductivity
10. Using lasers to vaporize tissue at multiple points simultaneously
11. 1st Pediatric Total Artificial Heart Patient Discharged Home Using Freedom® Portable Driver
Post Your Comments:
(Date:11/30/2015)... ... November 30, 2015 , ... Imagine Exhibitions and Universal Partnerships ... opening in March 2016 at Melbourne Museum in Melbourne, Australia. Immediately following the ... American tour dates. The Exhibition is based on Universal Pictures’ Jurassic World, one ...
(Date:11/30/2015)... -- Human Longevity, Inc. (HLI), the genomics-based, technology-driven company, ... Inc., a leading genome informatics company offering highly accurate, ... San Diego -based company has 14 ... Ashley Van Zeeland , Ph.D., who is now ... the deal were not disclosed. Van ...
(Date:11/30/2015)... -- HUYA Bioscience International, the leader in accelerating global development ... announced it has signed a Memorandum of Understanding with ... between KDDF and HUYA with the ultimate goal of ... the global market. China,s ... preclinical and clinical stage compounds. The company advances the ...
(Date:11/30/2015)... , Nov. 30, 2015  AbbVie, is introducing ... focuses on a daily routine for managing the life-long ... medication can affect the way the body absorbs it ... their a daily routine are important. The goal of ... patients better manage their hypothyroidism by establishing a daily ...
Breaking Biology Technology:
(Date:11/20/2015)... 2015 NXTD ) ("NXT-ID" or ... growing mobile commerce market and creator of the Wocket® ... was recently interviewed on The RedChip Money Report ... weekend on Bloomberg Europe , Bloomberg Asia, Bloomberg ... NXTD ) ("NXT-ID" or the "Company"), a biometric ...
(Date:11/18/2015)... 2015  As new scientific discoveries deepen our understanding ... healthcare providers face challenges in better using that knowledge ... addition, as more children continue to survive pediatric cancer, ... old age. John M. Maris, M.D ., ... Philadelphia (CHOP) . --> John M. ...
(Date:11/17/2015)... 17, 2015 Paris ... --> Paris , qui s,est ... DERMALOG, le leader de l,innovation biométrique, a inventé le ... et empreintes sur la même surface de balayage. Jusqu,ici, ... l,autre pour les empreintes digitales. Désormais, un seul scanner ...
Breaking Biology News(10 mins):