Technological advancements in the last
several decades have led to improvements in the quality of concrete being
produced, including longevity. Experts
in the field suggest that today’s concrete is designed to last for hundreds of
years, not just decades. The website, AggregateResearch.com
states that, “new concretes have better corrosion resistance, equal or higher
compressive and tensile strengths, higher fire resistance, and rapid curing and
strength gain. In addition, the production and life cycle of these new
concretes will reduce greenhouse gas emissions by as much as 90%.”
So along with an improved performance
for a broader range of applications, concrete is also becoming “greener”. By using new materials in the production
process, an increase in recycling, and a change in mixture proportioning, concrete’s
environmental impact has been reduced and the durability improved. New concrete mixtures such as High
Performance Concrete (HPC), Ultra-High Performance Concrete (UHPC), and
geopolymer concrete offer several advantages over traditional concrete and have
few disadvantages.
HPC and UHPC are some of the concrete
mixes that are produced using industrial waste by-products such as fly ash from
coal burning, blast furnace slag, and silica fume. Using these by-products reduces the amount of
portland cement required in the mix, which thereby cuts down on the amount of
carbon dioxide emissions emitted while producing the cement. Another benefit to the by-products is that as
they are plentiful, they generally are less expensive than portland cement.
Other new technologies include
creating fiber reinforced concrete that is premixed with dry components to
create higher tensile and flexural strength than in standard concrete. Some of the new concrete uses steel or other
organic fibers. This concrete is denser
and lighter weight that concrete reinforced with steel rebar and is being
tested for use in earthquake resistant structures, bridges, and nuclear
containment structures.
The Conco Companies are a leading
supplier of concrete services for the Western U.S. and got our start in the Bay
Area in 1959 by offering clients the best value on a wide range of concrete
services and products. Since that time,
we have taken a leading role as one of the top concrete contractors in the
region. Our offices serve California, Colorado, Oregon, Washington and Nevada.
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