Abstract
Lightweight cement mixtures with high technological properties based on the standard well cement Portland cement ПЦТІ-100 and building cements ПЦІ-500-Н, ШПЦ Ш/А-400 with a light impurity-acid fly ash of thermal power stations were developed and investigated. The minimum density of cement mortars based on the developed mixtures is, respectively, 1 460–1 530 and 1 580–1 650 kg/m3, while ensuring the high quality of other technological properties of cement mortar and stone. The development and selection of optimal recipes for new lightweight cement mixtures has been carried out. The results of the work are of practical use in cementing oil and gas wells in complex mining and geological conditions in geological exploration areas and industrial hydrocarbon fields.