Grace AB, a Swedish subsidiary of W.R. Grace & Co. and a leading manufacturer of concrete admixtures, has acquired the concrete admixture business of Perstop Peramin AB. Perstop’s concrete admixtures are sold to ready-mix and precast concrete producers and civil contractors in Sweden and other Northern European countries. The deal expands Grace’s presence in Scandinavian markets. For more about concrete admixture services offered by W.R. Grace & Co., visit www.graceconstruction.com or call (877) 423-6491.