Which anti-segregation agent is best in Bengbu City, Anhui Province? The use of mineral admixtures or air-entraining agents can reduce the tendency of segregation. The hazards of segregation affect the performance of concrete pumping construction, causing sticky cans, pipe blockage, affecting the construction period, etc., and reducing economic benefits. It affects the appearance of the concrete structure, with sand patterns, exposed aggregates, and exposed steel bars appearing on the surface of the concrete. The strength of concrete will be greatly reduced, which will seriously affect the bearing capacity of the concrete structure, destroy the safety performance of the structure, and in severe cases will cause rework and huge economic losses. The poor homogeneity of concrete results in inconsistent shrinkage of various parts of the concrete and is prone to shrinkage cracks in the concrete.
Anti-segregation agent for concrete, which is copolymerized by 30 to 100 parts by weight of Class A monomer and 20 to 160 parts by weight of Class B monomer. The Class A monomer is acrylamide , N-hydroxymethylacrylamide, acrylic acid, methacrylic acid, any one or a mixture of two or more in any proportion; the B-type monomer is hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate Any one or a mixture of two or more of propyl ester, hydroxypropyl methacrylate, isopentenyl alcohol polyoxyethylene ether, etc. in any proportion. The concrete anti-segregation agent synthesized by the invention has good compatibility with concrete, does not affect the strength development of concrete, effectively solves the problem of concrete segregation and bleeding at construction sites, improves the anti-segregation performance of concrete, and makes it easy to pump.
Which is the best anti-segregation agent in Bengbu City, Anhui? When the quality of fly ash suddenly changes (such as the fineness changes from 19% to 4%), the water demand of fly ash decreases greatly, and it is easy to Causes the phenomenon of sudden segregation of concrete; similarly, when the quality of fly ash suddenly deteriorates (such as the fineness changes from 19% to 38%), since a large part of the weight of fly ash has lost the function of cementing material, additional The relative dosage of cementing agent has actually increased, so segregation of concrete will occur. The following measures should be taken for fly ash: Strengthen testing, so that each vehicle of fly ash entering the factory can be tested, and unqualified materials must not enter the site to play a preventive role.
Product characteristics:
1. Improve system viscosity: The aqueous solution of this product has good viscosity and consistency. When used in concrete, it can make the concrete have good viscoelasticity, plasticity and toughness. It can effectively improve cracks, hollowing, blistering, peeling and other phenomena that are prone to occur in concrete.
2. Improve workability: This product can improve the fluidity of concrete mixture under low water-binder ratio conditions, while ensuring good cohesion and stability, preventing bleeding and segregation, and making the concrete The structure is more uniform, the pumping process is smoother, and it is less likely to cause blockage and other phenomena.
3. Improved constructability: This product has strong slump-preserving ability and strong adaptability to cement varieties, models and temperatures, and is almost unaffected by changes in external temperature.
4. Good compatibility: This product is a high-molecular biopolymer with strong acid and alkali resistance. It does not react with other materials in the components and is compatible with all commonly used additives including naphthalene, chemical materials and polycarboxylic acids. All acid admixtures are compatible.
5. Green and environmentally friendly: This product is polymerized from high molecular biopolymers and does not cause pollution to the natural environment during production and use.
How to use: Clean sandy floors without floating dust (moisture is allowed, but no open water). The smooth base of the concrete needs to be sanded with sandpaper. Generally, it needs to be painted (sprayed or rolled) 6-8 times, and the painting time is 1-2 days. The interval between two times is half an hour. It can be divided into two times in the morning and two times in the afternoon, and it can be completed in two days. As a bulk building material, concrete has developed rapidly. In recent years, high-strength and high-performance concrete has been widely used in engineering.
In addition to the mixing method and mixing time, concrete segregation is generally related to the quality of the cementitious materials of the concrete mixture, excessive water consumption, poor gravel gradation, Excessive dosage of water-reducing agent is more closely related. Cement Cement is the main cementing material in concrete. The stability of cement quality directly affects the stability of concrete quality. Changes in cement quality will cause segregation of concrete, and there are many factors in cement that affect the performance of concrete mixtures.
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