Testing of cement stone modified with an additive based on industrial waste

Nowadays under the conditions of intensively developing construction production, hardening time and strength Portland cement are becoming more relevant research issues this type binder. The basic requirements to stated in normative industry documents considered. limits normal fast-hardening given. Raw materials for production high-strength must be homogeneous provide a high degree fineness binder increase its surface area. with addition microsilica will make it possible obtain concretes given characteristics without additional costs. To describe methodology testing recommendations main regulatory operating Kazakhstan used. Necessary means equipment used laboratory satisfying existing standards listed sequential manner. procedure preparing standard samples dough is described step by step. prepared specimens were kept water at required temperature regime. Determination bending compressive was carried out on accredited equipment. Processing test results additives Setting times two compositions according requirements. dependence activity setting process has been determined.