tailieunhanh - Research on dynamics of the concrete vibratory table for laboratory works

The article presents the scientific basis for studying the influence of the eccentric shaft rotation speed on the compaction quality of the concrete mixture. In this regard, the dynamic model of the table-type concrete vibrator is first developed and solved by the numerical method. | HỘI NGHỊ KH amp CN CƠ KHÍ - ĐỘNG LỰC 2021 RESEARCH ON DYNAMICS OF THE CONCRETE VIBRATORY TABLE FOR LABORATORY WORKS NGHIÊN CỨU ĐỘNG LỰC HỌC THIẾT BỊ BÀN ĐẦM RUNG HỖN HỢP BÊ TÔNG PHỤC VỤ TRONG PHÒNG THÍ NGHIỆM TIEN VI NGUYEN DINH VU DANG Faculty of Vehicle and Energy Engineering Le Quy Don Technical University Email tienvinguyen2610@ pouring concrete is the consolidation or vibration of Abstract concrete. The quality and durability of normal The article presents the scientific basis for concrete directly depend on the number and the shape studying the influence of the eccentric shaft of voids so to produce durable concrete it is rotation speed on the compaction quality of the necessary to reduce the amount of air that is trapped concrete mixture. In this regard the dynamic inside the concrete which is usually done by vibrating model of the table-type concrete vibrator is first the concrete in the mixing stage or the casting stage. developed and solved by the numerical method. Concrete vibrators if used properly will help Then the reasonable eccentric shaft rotation consolidate concrete and will reduce the number of air speed is estimated to improve the compaction pockets inside the concrete mass. The cement- quality of fresh concrete materials. In addition concrete mixture will be of high quality if it is the observed results serve as the guideline and compacted to suitable compaction by compacting suggestions for designing and using such types of machines including a concrete vibrator table. This construction machines. machine allows changing some of the structural and working parameters to determine the influence of this Keywords Concrete vibratory table compaction parameter on the quality of compaction of the quality rotation speed of eccentric shaft. concrete mixture. The scope of this paper shows the Tóm tắt influence of the eccentric shaft rotation speed Bài báo trình bày cơ sở khoa học nghiên cứu ảnh parameter on the quality of compaction of the .