Method for manufacturing cement

A method of expanding expandable polymeric microspheres including contacting an aqueous slurry including unexpanded, expandable polymeric microspheres with heat in-situ during manufacture of cement. A method of manufacturing cement includes: (i) contacting an aqueous slurry of unexpanded, expandable polymeric microspheres with heat proximate to and/or during said manufacturing of cement to create expanded polymeric microspheres; (ii) optionally pre-wetting the expanded polymeric microspheres; and (iii) mixing the expanded polymeric microspheres with cement. 使可膨胀性聚合物微球膨胀的方法，包括在水泥的制造期间，将包含未膨胀的可膨胀性聚合物微球的含水浆料与热原位接触。制造水泥的方法包括：(i)在接近所述水泥的制造期间和/或在水泥的制造期间，将未膨胀的可膨胀性聚合物微球的含水浆料与热接触，以产生经膨胀的聚合物微球；(ii)任选地预润湿经膨胀的聚合物微球；以及(iii)将膨胀的聚合物微球与水泥混合。