Cement typically comprises 10 to 12 percent of the entire mix. When cement is mixed with water, sand and gravel, it turns into concrete, the rock-like substance associated with sidewalks, roadways, building foundations, and more.lastic concrete exposed to a carbon dioxide source (CO2) during the concrete placing, finishing and curing period will develop a soft, chalky, carbonated surface, known as dusting. Carbon dioxide is an odourless and colourless gas that is heavier than air and is produced by all forms of combustion.
The BMW M3 placed second among sports cars in Consumer Reports 2014 reliability survey. The BMW 1 Series is the third most-reliable sports car, according to Consumer Reports' 2014 survey. The Toyota Prius is said to be the most reliable hybrid/electric car for the 2014 model year in a Consumer Reports survey.
The Scion xD showed up as the most reliable in Consumer Reports' 2011 survey. Josh Miller/CNET. Consumer Reports released the results of its annual car reliability survey today, and Scion came out as the top brand, with the fewest reported problems. Scion cars proved the most reliable, according to owners contributing their experiences in the latest survey by Consumer Reports used to predict car reliability. The report, released today, compiles survey results for 28 brands. The least reliable cars, according to the survey, bear the Jaguar badge.