A shabby stoop can crush a home’s overall curb appeal. And while building concrete steps is more complicated than pouring a simple sidewalk, it’s probably not as hard as you might think. We spent the ...

Jianzhuang Xiao is a professor of recycled concrete materials and structures at Tongji University, Shanghai, China, and a vice-president at Guangxi University, Nanning, China. Zongjin Li is a ...