Concrete is a composite material composed of aggregate bonded together with a fluid cement which hardens over time. Most use of the term “concrete” refers to Portland cement concrete or to concretes made with other hydraulic cements. However, technically road pavement is also a type of concrete, “asphaltic concrete”, where the cement material is bitumen.
Permeable pavement is taking center stage now as erosion control and stormwater green infrastructure projects aim to reduce runoff and improve water quality.
Stopping Nonpoint-Source Pollution
In Columbia, MO, the Public Works Department received a Clean Water Act 319 grant for stormwater improvements to reduce nonpoint-source pollution into the creeks and streams.
With traditional sediment control devices like straw wattles and silt fence, a drop-and-go installation style could be disastrous. Proper trenching, staking, and preparation of the BMP-soil interface means the difference between success and failure, which has led many manufacturers of sediment control products to design the next generation of more
A COMMON THREAD runs through Todd Johnson’s two jobs as a police officer and an excavator: the precision needed to properly execute the demands of both lines of work. Johnson is vice president of Geo Precision, an excavation contracting company in Winterville, NC, owned by his wife Candace and servicing
By Jeff Winke
The construction industry has become more complex and technologically sophisticated. Gone are the days when a smart owner or operator and his backhoe could handle most projects. Back then, measurements were close approximations and quality was achieved through the skills and experience of the hired contractor.
People have an amazing ability to adapt to and even become blasé about technological wonders. The things that we take for granted (flying, television, cell phones, the Internet) would seem like something out of science fiction to anyone 100 years ago. Now, we can’t imagine what life was like without
People have an amazing ability to adapt to and even become blasé about technological wonders. Things that we take for granted (flying, television, cell phones, the Internet) would seem like something out of science fiction to anyone 100 years ago. Now we can’t imagine what life was like without them.