1. Aggregation: sampling and testing of specific coarse aggregate. Coarse aggregate must be made of gravel or crushed river pebbles, with appropriate gradient direction, excellent material and symmetrical material. Roughly speaking, the index value must comply with relevant specifications, policies and regulations. It is forbidden to manipulate the sand slurry composition and sand slurry composition, immediately detect them, and put the detected defects into the 4-party self feeding concrete mixer.
2. Concrete: concrete shall be sampled according to regulations. Each batch of concrete must be tested for compliance with the specifications and temperature. If you have questions about quality, do not enter the warehouse and test other index values again. Strictly prohibit the application of qualified concrete. It is forbidden to immediately apply unheated high-temperature concrete in new projects.
3. Mineral compounds: test according to relevant specifications and models. The laboratory must solve the transformation of mineral compound quality. After mineral compounds enter the site, be sure to carry out water consumption, ignition damage and particle size detection. Be able to store and record tested goods for basic testing. Compare the results to clarify the quality fluctuation and ensure the quality of new projects.
4. Water reducing agent: regularly check and detect the water reducing agent when entering the site. Check the following new items in the mixed packaging. Product name, model and specification, net or net total number, manufacturer's name, manufacturing time, processing plant serial number. Ensure that the contents of the packaging information comply with the product model and manufacturer's confirmation, and that the liquid compound has long fallen from the sediment and has long expired.
Secondly, the mortar mix proportion of concrete shall be appropriate.
Third, the weighing equipment of the fully equipped 4-party self feeding concrete mixer must be accurate.
The temperature of diesel engine of 4m3 self feeding concrete mixer is too high
1.4 the self feeding concrete mixer truck causes the engine to overheat on the general road. It should reduce the speed as soon as possible, drive the car under the shade of trees, or transfer to a relatively cool area to stop the car, but there is no need to stop the fire urgently.
2. Open the engine cover and let the diesel engine run at a standby speed, waiting for the temperature of the diesel engine to recover slowly. When the temperature of the diesel engine recovers, turn off the diesel engine. Then wait for a while until the temperature of the diesel engine decreases sufficiently, and then check the cooling water flow of the diesel engine.
The factors endangering the quality of the 4-party self feeding concrete mixer and the high temperature of the diesel engine are just like this. We look forward to your assistance.