• Can the concrete be reused after being crushed?
    • 2022-07-05 14:44:32

    In the past, concrete was rarely used in buildings, but now it is different. Concrete is widely used in any building now. With the widespread use of concrete, a large number of old concrete will appear when demolishing houses. In the past, this kind of concrete was directly classified as construction waste. However, with the increasing amount of old concrete, people wonder whether they can reuse t...

  • Key points of post responsibilities of concrete mixing plant operator
    • 2022-06-24 17:55:56

    (1) The raw materials used for concrete production are not a single homogeneous body with stable performance. During continuous production, external interference shall be eliminated and attention shall not be distracted; (2) During normal production, pay attention to the change of concrete slump, master the influence of water content adjustment on slump, have the right to adjust water content and ...

  • Action mechanism of water reducing agent in concrete
    • 2022-06-20 10:49:38

    Under the same condition of concrete slump, the admixture which can reduce mixing water can be divided into ordinary water reducing agent, high efficiency water reducing agent and high performance water reducing agent according to the size of water reducing rate.The specific action mechanism is as follows: 1.Dispersion Cement and water mix, due to the hydration of cement particles, cement particle...

  • Causes and hazards of concrete segregation
    • 2022-06-14 16:50:40

    Causes of concrete segregation The reasons for concrete segregation may be improper pouring and vibrating, the maximum particle size of aggregate is too large, the proportion of coarse aggregate is too high, the content of cementitious material and fine aggregate is too low, and the density of coarse aggregate is higher than that of fine aggregate. Or the ready-mixed concrete is too dry or too thi...

  • Inspection work must be done before starting concrete batching plant
    • 2022-05-23 17:37:19

    The correct navigation of large ships is inseparable from the captain's steering, and the smooth operation of the batching plant is also inseparable from the correct implementation of the operators. In order to ensure the normal operation of the concrete mixing plant, the operator shall do a rigorous inspection before work: 1. Check the transmission, moving parts, bin door, bucket door and track i...

  • Precautions for wrong input of concrete mixing design
    • 2022-05-17 17:07:45

    Case When a concrete company was supplying the basement of a construction site, due to the unfamiliar business level of the batching plant operator the tester wrote the concrete mixing design and handed it over to the operator for input. He went to the concrete laboratory to play mobile games, and the operator mistakenly input the cement. The fly ash was used as cement. The problem was discovered ...

  • What is the difference between river sand, machine-made sand, washed sand, recycled aggregate and tailings sand?
    • 2022-03-15 11:18:35

    Sand is an integral part of concrete. It is generally called fine aggregate, which refers to rock particles with a particle size of less than 5mm. It can be generally divided into natural sand and artificial sand. At present, common sands are: (1) Manufactured sand; (2) River sand (generally used for sand designated for key projects, and ordinary concrete is generally not used due to high price an...

  • The effect of crushed sand on concrete
    • 2022-01-13 14:43:08

    Crushed sand (Manufactured sand) contains stone ash which has two effects on the working performance of concrete. On the one hand, the increase of stone ash content will lead to the increase of water demand of concrete because stone ash will adsorb certain water and additives; On the other hand, the manufactured sand with poor grading is easy to cause concrete segregation and bleeding. Appropriate...

  • How to choose a concrete batching plant?
    • 2021-12-30 16:56:39

    1. the quality of central mix batch plant. If you want to produce high-quality concrete, you must choose good quality production equipment. Users should focus on the advanced nature, reliability, excellence and versatility of the equipment, and judge whether the concrete equipment is excellent based on these conditions. When purchasing concrete batching plant equipment, if possible, you can v...

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