How To Solve The Problem That It Is Difficult To Accurately Grasp The Amount Of Micro Silica Powder Added In Concrete?

We can solve the problem of difficult to accurately grasp the amount of micro silica powder added in concrete from the following aspects:

I. Conduct experimental research

Before using micro silica powder, conduct a series of tests.

1. Design the concrete mix ratio with different micro silica powder additions, make concrete specimens and test their performance, such as strength, workability, durability and so on. By comparing the performance changes of concrete under different mixing ratios, determine a more suitable range of adding amount.

2. Consider the use of concrete environment and engineering requirements. If it is used in the high strength requirements of the structure, you can increase the amount of silica fume; if it is a higher requirement for the workability of the parts, you need to carefully control the amount of addition, so as not to affect the fluidity of the concrete and pumpability.

II. Refer to the existing experience and standards

1. Check the relevant technical data, standard specifications and engineering cases to understand the use of micro silica powder and the amount of addition in similar projects. For example, some industry standards may give a range of recommended additions of silica fume in different types of concrete. 2.

2. Consult with experienced engineers, researchers or suppliers of micro silica powders to get their suggestions and practical experience. They may be able to provide some practical reference values for the addition amount according to the specific engineering situation and material properties.

III. Adopt advanced testing methods

1. Monitor the performance index of concrete in real time during the concrete production process. For example, use equipment such as slump meter and Vibro consistency meter to test the workability of concrete, and use equipment such as pressure testing machine to test the strength of concrete. If the performance indexes are found to deviate from the expectation, the addition amount of micro silica powder can be adjusted in time.

2. use modern analytical techniques, such as X-ray diffraction, scanning electron microscope, etc., to analyze the micro structure of concrete. By observing the distribution and role of micro silica powder in the concrete, further optimize the addition amount.

V. The production process control

1. Ensure the stable quality of micro silica powder. When purchasing micro silica powder, choose a reliable supplier with good quality, and carry out quality testing for each batch of micro silica powder. If the quality of micro silica powder fluctuates greatly, it will increase the difficulty of adding amount control.

2. Accurately measure the added amount of micro silica powder. Use high-precision measuring equipment, such as electronic scales, screw conveyors, etc., to ensure that the added amount of micro silica powder is accurate. Meanwhile, calibrate and maintain the measuring equipment regularly to ensure its accuracy.

3. Strengthen the control of concrete mixing process. Ensure that the micro silica powder and other raw materials are fully mixed evenly to avoid the situation of too much or too little local addition. The mixing time can be extended appropriately to improve the mixing efficiency.