Shares of US Concrete (NASDAQ: USCR) jumped more than 15% today after the company reported second-quarter 2018 earnings. The ready-mix concrete leader delivered another solid quarter of growth up and down the income statement, which was welcomed news following an unusually weak (and weather impacted) first-quarter performance. The ready-mix backlog reached an all-time high of 8.3 million cubic yards, signaling that infrastructure projects in the company's core metropolitan areas aren't slowing down anytime soon.The only blemish during the recent quarter was a slight decrease in average sales price.