Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hardening Kinetics and Strength of Nanomodified Cement Composites
Nanomodification of building materials requires the involvement of theoretical knowledge to justify the choice of the type of nanomodifier, as well as experimental studies to establish the method of its introduction, concentration and distribution in the volume of the composite. Failure to comply with this leads to the occurrence of cases in which the low efficiency of nanomodification is demonstrated. One of the effective ways to reduce the complexity in controlling the properties of a composite using a nanomodifier is to establish the kinetics of structure formation of the modified composite. Therefore, the aim of the work is to establish the effect of the composition and concentration of nano- and micromodifiers on the strength and kinetics of strength development of cement composites. For research, 2 types of composite cement binders and nanomodifiers based on zinc hydrosilicates were used. An analysis was made of the kinetics of hardening and compressive strength of nanomodified composite stones. It has been established that the effectiveness of nanomodification is determined by the microstructure of the modified binder and the composition of the nanomodifier. The highest strength of the composites is observed when using nanosized zinc hydrosilicates manufactured at α = 1.0. The strength of the composite binder depends on the rate of strength gain by the composite; at a high rate of strength gain, its value is lower. This makes it possible to control the strength of the obtained materials by adjusting the rate of curing and optimizing the microstructure of the nanomodified binder.
Hardening Kinetics and Strength of Nanomodified Cement Composites
Nanomodification of building materials requires the involvement of theoretical knowledge to justify the choice of the type of nanomodifier, as well as experimental studies to establish the method of its introduction, concentration and distribution in the volume of the composite. Failure to comply with this leads to the occurrence of cases in which the low efficiency of nanomodification is demonstrated. One of the effective ways to reduce the complexity in controlling the properties of a composite using a nanomodifier is to establish the kinetics of structure formation of the modified composite. Therefore, the aim of the work is to establish the effect of the composition and concentration of nano- and micromodifiers on the strength and kinetics of strength development of cement composites. For research, 2 types of composite cement binders and nanomodifiers based on zinc hydrosilicates were used. An analysis was made of the kinetics of hardening and compressive strength of nanomodified composite stones. It has been established that the effectiveness of nanomodification is determined by the microstructure of the modified binder and the composition of the nanomodifier. The highest strength of the composites is observed when using nanosized zinc hydrosilicates manufactured at α = 1.0. The strength of the composite binder depends on the rate of strength gain by the composite; at a high rate of strength gain, its value is lower. This makes it possible to control the strength of the obtained materials by adjusting the rate of curing and optimizing the microstructure of the nanomodified binder.
Hardening Kinetics and Strength of Nanomodified Cement Composites
Lecture Notes in Civil Engineering
Akimov, Pavel (Herausgeber:in) / Vatin, Nikolai (Herausgeber:in) / Tusnin, Aleksandr (Herausgeber:in) / Doroshenko, Anna (Herausgeber:in) / Grishina, Anna (Autor:in) / Korolev, Evgenij (Autor:in)
03.09.2022
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch