In recent years, due to the ratio and raw materials, commercial concrete stations have to weigh the relationship between cost, workability, and strength, causing concrete segregation to be very common in the entire industry, ranging from slurry running out of pouring parts to leaking stones. In severe cases, the pumps are clogged and ash is wasted, causing the commercial concrete station to suffer a lot.
In this case, concrete anti-segregation agent came into being.
Principle of segregation: The segregation of concrete is that the cohesion between the components of the concrete mixture is insufficient to resist the sinking of the coarse aggregate, and the components of the concrete mixture separate from each other, resulting in uneven internal composition and structure. The phenomenon. It usually manifests as the separation of coarse aggregate and mortar from each other, for example, dense particles are deposited at the bottom of the mixture, or coarse aggregate is separated from the mixture as a whole. The reasons for segregation may be improper pouring and vibration, the maximum particle size of the aggregate is too large, the proportion of coarse aggregate is too high, the content of cementitious materials and fine aggregate is low, and the density of coarse aggregate is too high compared with fine aggregate. Too big, or the mixture is too dry or too thin, etc.
Introduction to anti-segregation agent: An emergency material developed for mixing stations. It has the characteristics of rapid dispersion of water, rapid evaporation of water and other products that deal with moisture and chemical substances. It is mainly used for production due to changes in materials. Emergency treatment for special situations where the control fails to follow up in time, resulting in large concrete slump or concrete segregation that cannot meet construction requirements.
Usable situations:
1. Segregation caused by too many additives
2. Concrete segregation caused by excess water
3. The fine aggregate suddenly becomes coarse and the powder content decreases sharply, resulting in concrete segregation or poor concrete workability.
4． The concrete itself does not segregate, but during concrete construction at the construction site, special parts with small concrete slump are required (for example: sloping roofs, sloped roads, stairs). Our products can also drastically reduce the concrete slump to meet construction requirements. . Not only can concrete segregate on the construction site, it can also be dealt with quickly if concrete is found to be segregated in the mixing station. It is quite convenient and fast, which greatly benefits the economy and time efficiency.
Usage (addition amount): Add about 0.3 to 0.5 kg to 1 cubic meter of concrete. Depending on the slump of the concrete on site, the amount can be adjusted slightly. If the slump is small, you can add a little less. If the temperature is high, you can add a little more appropriately. 2 . Add our product into the concrete according to the dosage, stir the tank truck quickly for 3 to 5 minutes, and the concrete will return to its normal state.
Products can be adjusted according to customer requirements, such as strength deviation, retardant ingredients, water retention ingredients, dispersion properties, etc.
Our company is also in trial application of such products, and the effect is remarkable, but the later concrete performance tests are still in progress. The application of new products often requires a process of familiarity, demonstration, and testing. Some later The data will also be shared and communicated with everyone.
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