THE DEVELOPMENT OF PLANAR DEEP-SEAL READY MIX CONCRETE
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2018, Vol 1, Issue 111
Abstract
Purpose. The purpose of the article is to develop high-performance planar deep vibration seal of concrete mixtures of different consistency. Methodology. The analysis of existing structures and methods of compaction of concrete mixtures by deep vibrators, their positive and negative properties are determined. A new design of a planar deep seal consisting of a vertical plate immersed in a concrete mixture on which a vibration exciter of circular vibrations is mounted with the help of a bracket fixed in its upper part is proposed. The design of a compact and low-energy vibration exciter of circular oscillations with a monolithic unbalance shaft, the output end of which is connected by means of a sleeve coupling and a flexible shaft with a drive is described. The operation and operating principle of the proposed planar deep seal are described. The fundamentals of the method of compaction of concrete mixture by variable amplitude-frequency deformation of the concrete mixture arising from the spatial vibrations of the proposed planar deep seal are shown. Results. The technical characteristics of the planar deep seal used for compaction of concrete mixtures are giv-en. Graphically presented and analyzed changes in the amplitude of vibrations of the deep plane vibration compactor and the amplitude of stresses arising in the concrete medium of different consistency in the place of its contact with the deep vibration seal depending on the height of the concrete mixture layer. The change of vibration amplitude and stress amplitude in the concrete medium of different consistency depending on the distance to the vibration source is shown. Originality. The conducted studies have established the main parameters of vibration impact on the compacted medium in the form of variable amplitude-frequency deformation of the compacted medium. Shows the effectiveness of vibrato-ry compaction is plastic with a slump of OK-3.5 – 4 cm mix and hard mix stiffness W=30 – 120 s. the results of the studies allow us to substantiate the rational parameters of the planar depth of the seal, making spatial variability, and the modes of vibration effects on concrete mixtures of different consistencies. Practical value. The obtained results allow us to justify the rational parameters of the deep vibration seal, to choose a rational method of vibration impact on the compacted medium and the corresponding mode of operation depending on the consistency of the concrete mixture and the thickness of the compacted layer. The values of the required duration of the vibration process of compaction of con-crete mixtures of different consistency are given. References 10, tables 2, figures 4.
Authors and Affiliations
J. Batsaikhan
Keywords
Related Articles
- EP ID EP660304
- DOI 10.30929/1995-0519.2018.4.69-74
- Views 77
- Downloads 0
THE DEVELOPMENT OF A CROSS-SHAPED DEEP SEAL OF CONCRETE MIX
Purpose. Development of high-performance cross-shaped deep vibration seal of concrete mixtures of different consistency is the purpose of this work. Methodology. The study uses the construction of structures and methods...
GENERALIZEDCRITERION OF CRACKINITIATION IN TERMS OF OSCILLAIONS IN STRESS STRAINROCK MASS
Purpose. To develop a generalized criterion of the crack initiation in terms of oscillations, which are distributed in the rock mass. To study the influence exerted on the cracks development in terms of oscillatory proc...
FUNDAMENTALS OF CONSTRUCTION OF EXPLOSIVE MATERIAL EXPLOSION-PROOF PRODUCTION TECHNOLOGY
Purpose. To establish hazard criteria in the production of explosive materials, to identify directions and ways to improve labour safety in the manufacture of explosives and their initiating means, as well as perspective...
A MANUFACTURING METHOD OF THE STABILIZING WORKING OF DIES FOR THE PULSED STAMPING
Purpose. To development and select the method of the hardening-stabilizing treatment of the die mirror for the hydroexplosive stamping of thin sheet parts of a closed form. Methodology. The determination of new technolog...
ENHANCEMENT OF THE EFFICIENCY OF STATE SUPERVISION IMPLEMENTATION ON THE OF LABOR PROTECTION STATE AT AGRICULTURAL ENTERPRISES
Purpose. To analyze and highlight the state of labour protection at agricultural enterprises of Ukraine. Findings. The description of the occupational protection and industrial safety (OHSAS) management system has been g...