Ancient Roman seawalls that have been exposed to the elements for over 2,000 years are finally beginning to reveal the secret of their longevity to researchers trying to figure out what makes them so durable. Lasting for 2,000 years in impressive enough, but even more impressive is the fact that the concrete barriers have actually strengthened over that time period.
According to Time, new research published in American Mineralogist discovered it is a mixture of volcanic ash, lime, seawater, and a mineral called aluminum tobermorite that gives the concrete its durability.
This mixture can reinforce the wall and prevent cracks from expanding. The reaction was caused by seawater continually pounding the structures for centuries, which allowed the mineral mixture of silica oxides and lime to grow between the volcanic rock aggregate and mortar to develop resistance, Time reports. This Roman concrete thrives in open chemical exchange with seawater, which is very rare on Earth.
The information gleaned from this research could prove vital in developing a more environmentally friendly, longer-lasting concrete that could be used in projects today’s concrete would be deemed unsuitable for such as sea barriers or coastal structures.
Related Stories
| Aug 11, 2010
Turner, Structure Tone top BD+C's ranking of the 50 largest office contractors
A ranking of the Top 50 Office Contractors based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
PCL Construction, HITT Contracting among nation's largest commercial building contractors, according to BD+C's Giants 300 report
A ranking of the Top 50 Commercial Contractors based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Webcor, Hunt Construction lead the way in mixed-use construction, according to BD+C's Giants 300 report
A ranking of the Top 30 Mixed-Use Contractors based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Clark Group, Hensel Phelps among nation's largest federal government contractors, according to BD+C's Giants 300 report
A ranking of the Top 40 Federal Government Contractors based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Oldcastle Precast Building Systems wins PCI 2009 Sustainable Design Award
Oldcastle Precast Building Systems was part of the award winning team behind the affordable housing development Melrose Commons Site 5 situated in the South Bronx. PCI (Precast Concrete Institute) recently selected Melrose 5 for the “2009 PCI Design Award for Best Sustainable Project”.
| Aug 11, 2010
Whiting-Turner, EMJ Corp. top BD+C's ranking of the nation's 40 largest retail contractors
A ranking of the Top 40 Retail Contractors based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Suffolk Construction Company acquires William A. Berry & Son
Suffolk Construction Company, New England’s largest construction company announced today that they have acquired William A. Berry & Son (Berry), the second largest construction company in the region. The two companies, both with deep New England roots and successful track-records, combined will have more than 1,200 employees and projected revenues of $2 billion.
