Features of building composites designing for their exploitation in extreme conditions

[摘要] The types of natural and technogenic impacts to protective structures are systematized. It was revealed that the protective structures research on the effect of the damaging factors complex of weapons modern types was not carried out. The results of a study on the rice husk ash use as a component of a composite binder are presented. To achieve the purpose of the work, an organomineral nanomodifier was developed with the following composition: 32% of cement, 31% of ash, 17% of quartz flour, 14% of crushed limestone, 6% of hyperplasticizer. The modifier was ground to a specific surface area of 500-900 m2/kg. It was added to cement in the amount of 1, 3, 5, 7, 10%. Water was added in the amount necessary to ensure the same mobility. Cement stone was studied at the age of 1, 3, 7, 28 days. Curves of strength were constructed. It was found that rice husk ash (amorphous and porous) obtained at a burning temperature of 600 to 700°C (using the appropriate combustion method) has the potential for use in structural concrete due to the pozzolanic properties of such rice husk ash.

[发布机构] Belgorod State Technological University Named after V.G. Shukhov, Kostyukova St. 46, Belgorod, Russia^1;Far Eastern Federal University, Sukhanova St. 8, Vladivostok, Russia^2

[效力级别] 计算机科学

[关键词] Burning temperature;Composite binders;Crushed limestone;Extreme conditions;Pozzolanic properties;Protective structures;Structural concretes;Technogenic impact