Speciality chemical supplier, SIka AG, of Switzerland has acquired the concrete admixture business of Cementa AB of Sweden. Cementa AB is a subsidiary of the German Heidelberg Cement Group and is one of the leading suppliers of building materials in Sweden. The former parent company is said to be withdrawing from the concrete admixtures business in a shift of focus. Sika said Cementa’s customers would benefit from the acquisition through “their access to the new technologies of Sika.”