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Study on the Influence of Polycarboxylate-Type Superplasticizers MasterGlenium ACE 430 and MasterGlenium ACE 560 on the Physical and Technical Properties of Fine-Grained Concrete

A study on the influence of polycarboxylate-type superplasticizers on the physical and technical properties of fine-grained concrete was conducted. The proposed concept involves creating high-quality, high-strength concretes based on modified cementing systems characterized by improved construction and technical properties.

Research of Lime-Ash Plugging Mixtures

Lime-ash plugging mixtures (LAPM) with a density of 1450–1780 kg/m3 have been developed and studied as new and competitive plugging compositions. LAPM consisting of lime and acid fly ash were found to be expanded during setting. The composition of the products formed during LAPM hydration was determined by means of X-ray phase analysis. Kinetic curves of plugging material expansion have been obtained at the temperatures of 348–413 K.