Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modification of Harsh Cement Pavement Concretes with Bitumen Emulsion
https://orcid.org/http://orcid.org/0000-0001-6879-0369
https://orcid.org/http://orcid.org/0000-0003-0874-316X
https://orcid.org/http://orcid.org/0000-0003-4926-8537
To this date, the total length of highways in Russia is more than 1.5 million km. And the problem of building high-performance roads is relevant due to the climatic features of Russia. Road surfaces must be frost-proof and chemical-resistant and must withstand prolonged cyclic compression and bending loads. These impacts lead to stresses in the concrete matrix, which cause cracks development. The primary objective in the development of road concrete is to increase the bending strength of concrete thus raising the service life of the coating from 20 to 50 years. This can be facilitated by new types of cement concrete, for example, roller compacted concrete pavement with a reduced modulus of elasticity in the road base courses. Roller compacted concrete pavement with the lowest possible content of water and adhesive has the maximum degree of material density, while ensuring the formation of a dense structure. Such concretes can be obtained by using damping bitumen emulsion. This paper examines the theoretical aspects of the structure formation of concrete with bitumen emulsion injected in it. It studies the main operational properties of road concretes modified with high-dispersion anion-active bitumen emulsion. It was found that modifying harsh concrete with anion-active bitumen emulsion boosts the performance properties of roller compacted concrete pavement, namely: compressive strength (by 32%), bending strength (by 38%), and cold-resistance (by 2 times). In addition, this paper offers a determination of the optimum modifying additive: 5% of the anion-active bitumen emulsion of cement mass for harsh ready-mix concretes.
Modification of Harsh Cement Pavement Concretes with Bitumen Emulsion
https://orcid.org/http://orcid.org/0000-0001-6879-0369
https://orcid.org/http://orcid.org/0000-0003-0874-316X
https://orcid.org/http://orcid.org/0000-0003-4926-8537
To this date, the total length of highways in Russia is more than 1.5 million km. And the problem of building high-performance roads is relevant due to the climatic features of Russia. Road surfaces must be frost-proof and chemical-resistant and must withstand prolonged cyclic compression and bending loads. These impacts lead to stresses in the concrete matrix, which cause cracks development. The primary objective in the development of road concrete is to increase the bending strength of concrete thus raising the service life of the coating from 20 to 50 years. This can be facilitated by new types of cement concrete, for example, roller compacted concrete pavement with a reduced modulus of elasticity in the road base courses. Roller compacted concrete pavement with the lowest possible content of water and adhesive has the maximum degree of material density, while ensuring the formation of a dense structure. Such concretes can be obtained by using damping bitumen emulsion. This paper examines the theoretical aspects of the structure formation of concrete with bitumen emulsion injected in it. It studies the main operational properties of road concretes modified with high-dispersion anion-active bitumen emulsion. It was found that modifying harsh concrete with anion-active bitumen emulsion boosts the performance properties of roller compacted concrete pavement, namely: compressive strength (by 32%), bending strength (by 38%), and cold-resistance (by 2 times). In addition, this paper offers a determination of the optimum modifying additive: 5% of the anion-active bitumen emulsion of cement mass for harsh ready-mix concretes.
Modification of Harsh Cement Pavement Concretes with Bitumen Emulsion
https://orcid.org/http://orcid.org/0000-0001-6879-0369
https://orcid.org/http://orcid.org/0000-0003-0874-316X
https://orcid.org/http://orcid.org/0000-0003-4926-8537
To this date, the total length of highways in Russia is more than 1.5 million km. And the problem of building high-performance roads is relevant due to the climatic features of Russia. Road surfaces must be frost-proof and chemical-resistant and must withstand prolonged cyclic compression and bending loads. These impacts lead to stresses in the concrete matrix, which cause cracks development. The primary objective in the development of road concrete is to increase the bending strength of concrete thus raising the service life of the coating from 20 to 50 years. This can be facilitated by new types of cement concrete, for example, roller compacted concrete pavement with a reduced modulus of elasticity in the road base courses. Roller compacted concrete pavement with the lowest possible content of water and adhesive has the maximum degree of material density, while ensuring the formation of a dense structure. Such concretes can be obtained by using damping bitumen emulsion. This paper examines the theoretical aspects of the structure formation of concrete with bitumen emulsion injected in it. It studies the main operational properties of road concretes modified with high-dispersion anion-active bitumen emulsion. It was found that modifying harsh concrete with anion-active bitumen emulsion boosts the performance properties of roller compacted concrete pavement, namely: compressive strength (by 32%), bending strength (by 38%), and cold-resistance (by 2 times). In addition, this paper offers a determination of the optimum modifying additive: 5% of the anion-active bitumen emulsion of cement mass for harsh ready-mix concretes.
Modification of Harsh Cement Pavement Concretes with Bitumen Emulsion
Lecture Notes in Civil Engineering
Vatin, Nikolai (Herausgeber:in) / Garipov, Aidar (Autor:in) / Makarov, Dmitry (Autor:in) / Khozin, Vadim (Autor:in) / Stepanov, Sergey (Autor:in)
International Scientific Conference on Socio-Technical Construction and Civil Engineering ; 2021 ; Kazan, Russia
29.06.2021
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Strength improvement additives for cement bitumen emulsion mixture
| British Library Online Contents | 2019