In addition to improvements in RCC surface texture through diamond grinding, recent years have seen improvements to mix design, mix production and placing, as reported in Zollinger’s paper “ Recent Advances and Uses of Roller Compacted Concrete for Pavement Construction in the United States. “Diamond grinding smooths the pavement surface, making it suitable for higher speed travel.” “ When used for roads where the speed of travel exceeds 35 miles per hour, RCC surfaces as installed may not be smooth enough,” said Zollinger. Many of these were residential streets owned by private developers, although the method is also being used by municipalities and state DOTs, notably Texas, California, and Virginia. Zollinger, Chairman of the RCC Pavement Council. Between 20, over 1.6 million sq yd (1.3 million sq meters) of RCC were placed each year, according to research performed by Corey J. have increased across many different project types. With so many benefits, RCC installations in the U.S. The reduction in maintenance also means an overall reduction in lifetime cost.
It also requires little maintenance, typically needing only minor patching in isolated areas after decades of traffic loading. RCC offers a long service life when compared to similarly priced asphalt pavements. Vibratory rollers compact the concrete until it densifies, creating a strong, durable pavement that will resist softening, deforming, or rutting.
RCC can be effectively mixed at high volumes, then delivered to the jobsite where it is quickly and easily placed. Eventually, however, the benefits of RCC led to it being more widely adopted for use on municipal streets, county roads, and parking lots, driving the need for smoother surfaces. When it was introduced in the 1970s, the rougher surface of RCC caused it to be used mostly on industrial or service roads. Diamond grinding is primarily conducted to restore or improve ride quality, but it also provides improvements in surface texture and reductions in noise levels.
#SHINY ASPHALT TEXTURE SERIES#
Diamond grinding is the removal of a thin layer of hardened concrete pavement surface using a self-propelled machine outfitted with a series of closely spaced diamond saw blades mounted on a rotating shaft. And when incorporating a diamond-ground surface, the completed pavement will be quiet, smooth, and pleasurable to drive on. While it was once common to overlay RCC with asphalt, specifiers are now taking advantage of the performance and environmental benefits of a concrete surface. But one element of traditional concrete paving shouldn’t be abandoned-diamond grinding the surface for smoothness. A zero-slump concrete mix, RCC doesn’t need formwork, dowels, or rebar, and it requires minimal finishing. The finished product is referred to as roller-compacted concrete (RCC). But look closer: increasingly, the mix coming out of the asphalt paver is concrete-albeit a drier mix than what comes out of a chute. When the equipment rolls onto the jobsite, it might look like just another asphalt paving project.
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