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The physical condition of the automatic self loading concrete mixer truck during the divergence period is very different. Here I divide the life cycle of the concrete mixer truck into five stages: peak period, Microsoft period, menopause, late life and risk period. In these five stages, the maintenance and repair of concrete mixer trucks are also different in focus.

. After the self-loading mixer truck has finished unloading at the construction site, the hose provided with the self-feeding mixer truck should be used to flush the hopper, discharge hopper, discharge chute, etc., to remove the dirt that adheres to the body. Mud and concrete. On the way back to the mixing station, 150---200L of water should be poured into the mixing drum to clean the concrete residues on the wall and blades.

The working environment of the automatic self loading concrete mixer is relatively bad, and the user does not pay attention to daily maintenance, which has caused some unnecessary failures and economic losses. I hope that the daily use of the majority of automatic self loading concrete mixer truck users will be introduced through the editor below. And maintenance play some role.

The difference between self-loading concrete mixer and forced concrete mixer is:
1. The mixing tank works differently:
In the self-loading concrete mixer, the mixing drum rotates at an appropriate speed; while the mixing drum of the forced mixer is fixed.
2. Different mixing uses:
Self-loading concrete mixers are mostly used to mix general plastic concrete, and mandatory mixers are mostly used to mix dry hard concrete and lightweight aggregate concrete.

When using an automatic loading mixer truck to load concrete, the rotation speed of the mixing drum is 2-10 rpm. During transportation, ensure that the speed of the mixing tank on the horizontal road is 2-3 rpm. If the slope is greater than 50, when the road is uneven or shakes violently, stop mixing and spinning, and wait for the road to improve before mixing and spinning.

The quality of the tunnel depends on the quality of the process. The quality of the process depends on the quality of the excavation, initial support and drainage and drainage, etc. The better control of the initial support and drainage and drainage can strengthen supervision, so the focus is on the quality of the excavation, which depends on the quality of the excavation The quality of drilling and blasting means that in theory, the quality of the initial support without over-excavation

1. The operating lever is convenient for operation, and the touch screen adds water quantitatively.

2. The operation is sensitive and convenient, and the quantitative addition of water on the touch screen makes the stirring more uniform and more in line with the specifications.

Concrete slump mainly refers to the plasticizing performance and pump ability of concrete. The factors that affect the concrete slump mainly include gradation change, water content, weighing deviation of the scale, and the amount of admixture, which are easily overlooked. Cement temperature, etc. Slump refers to the workability of concrete, specifically to ensure the normal progress of construction, including the water retention, fluidity and cohesion of concrete.

(1) When the concrete strength level is less than C50, the slump should be less than 180 mm, and when the strength level is greater than C50, the slump should be greater than 180 mm; (2) When the specified concrete slump is less than 40 mm, the allowable deviation is ±10 Mm; when the specified concrete slump is 50~90 mm, the allowable deviation is ±20 mm; when the specified concrete slump is greater than 100 mm, the allowable deviation is ±30 mm;

Concrete refers to a general term for engineering composite materials in which aggregates are cemented together by cementitious materials, and is widely used in civil engineering. Because it consists of solid phase, liquid phase, and gas phase, some bubbles will inevitably be produced after the concrete is poured. But the existence of these bubbles will not only affect the appearance of the project, but more importantly, it will have some hidden risks.