The dynamic behaviour of high-volume fly ash concrete with nano-silica (HVFANS) and polypropylene fibres at curing ages of 7 to 90 days was determined by using a split Hopkinson pressure bar (SHPB) machine.At each curing age, the concrete samples were laboratory tested at Mixer different temperatures conditions under strain rates reached up to 101.
The cloud storage system provides users with convenient storage services.However, users who use cloud storage services lose absolute control over the data once they upload files to the cloud service provider (CSP).The integrity of Polos the cloud data has become a problem worth considering.In the realization of verification of cloud storage schemes
Mathematical modeling of the subject in the security system of construction in the Arctic region and the system of events characterizing the event structure of the subject Polos are proposed.The security structure of the subject is given as an example.The practical result of the work is the possibility of a mathematical interpretation of the system