Abstract
The article presents the results of many years of comprehensive research on the new technology of forming extra-strong unreinforced pipes for hydro-engineering construction by vibro-peristaltic hyper-compacting with simultaneous modifying of the concrete mixtures and concrete itself. The regularities of occurrence of a compacted mixture in a column of high-intensity compression and tension zones varying in time, as well as the placement and configuration of the filtration fields of the formwork forms, taking into account the type and diameter of the holes preventing their blockage in the molding process, are given. As a result of experimental theoretical and industrial research, the scientific basis for the production of highly durable concrete has been developed. Technological bases of its production in axisymmetric products, as well as a new installation for molding concrete unreinforced pipes by vibro-peristaltic pressing, which is protected by copyright certificate and patent of the Republic of Uzbekistan. The installation is intended for forming low-pressure and free-flow pipes with a nominal diameter from 500 to 1500 mm and a length of up to 2000 mm. The purpose of this article is to share the results of research, experience to accelerate the widespread introduction of new technology.
Highlights
The development of water management and road construction in Uzbekistan and Central Asia is associated with an increase in the need for low-pressure and pressure-free axisymmetric products
The limited number of manufactured and used concrete axisymmetric products is explained by the fact that the resistance of concrete to tensile stresses is insignificant and
The design of the installation involves the use of several jointly operating technological principles: - modification of the concrete mixture by squeezing excess mixing water; - limiting compaction of the material to be molded due to the crimping of the concrete mix, intensively moving with a peristaltic shock-pressing wave; - the possibility of combining the tangential and normal efforts of the vibro-impact hyperfluid compaction, which provides the ultimate packaging of the concrete structure [21]
Summary
The development of water management and road construction in Uzbekistan and Central Asia is associated with an increase in the need for low-pressure and pressure-free axisymmetric products. Nowadays, reinforced concrete and steel pipes are widely used, and, in such communications, where less resource-intensive non-metallic products can be used. The issue of increasing the strength of concrete under tension has received little attention. The solution to this problem comes up against the basic contradiction of concrete technology:
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
