1, insert quickly and pull slowly, so as not to leave gaps in the concrete.
2. The vibrating time for each insertion is about 20-30 seconds, and the concrete will no longer sink obviously, and there will be no bubbles. The pan-slurry shall prevail.
3. The vibrating time should not be too long. If it is too long, sand and cement slurry will separate, stones will sink, and a sand layer will be formed on the concrete surface, which will affect the quality of concrete.
4, vibrator should be inserted into the lower concrete 10cm, in order to strengthen the combination of upper and lower concrete.
5. The spacing before and after vibrating insertion is generally 30-50 cm to prevent vibration leakage.
6. Three noes: First, don't touch the formwork when vibrating; second, when vibrating near the formwork, tap the formwork with a wooden hammer at the same time, and use iron brazing at the rebar and the four corners of the formwork.
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What vibrator should be used to vibrate the column concrete?
Plug-in concrete vibrators are internal combustion, electric and pneumatic. Single-phase electricity (AC 20V), also called vibrator, is widely used. The club head diameters are 75 and 50. 50% is used for components with dense steel bars. The city has long banned self-mixing concrete and used commercial concrete. The slump of commercial concrete for industrial and civil buildings is very large, mostly around 180m, and the particle size of stones is below 25. Because of its good fluidity and easy vibration, it is not as strict as in the past. Foshan Fohong Construction Machinery Co., Ltd., a concrete mixing plant manufacturer, is a good choice. Foshan Fohong Construction Machinery Co., Ltd. is a modern construction machinery manufacturer, providing concrete mixing stations, concrete mixers, concrete dosing machine, concrete mixing and transportation rollers and other equipment. The products have complete models, stable performance, long service life and high cost performance.