What is Water reducing agent? Water reducing agent is a kind of concrete admixture that can reduce the mixing water consumption under the condition of keeping the slump of concrete unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalene sulfonate, formaldehyde polymer, etc. Adding concrete mixture can disperse cement particles, improve its workability, reduce unit water consumption and improve the fluidity of the concrete mixture. Or reduce the unit cement consumption and save cement. Carbon thermal reduction method
Main applications of Water reducing agent 1. The mechanism of water reduction is mainly due to the adsorption of cement particles to water-reducing agents and the dispersion of water-reducing agents to cement particles. When water reducing agent is added to concrete, it will disperse into macromolecular anions and metal cations (such as Na+ and Ca2+). Macromolecular anions with strong surface activity are adsorbed on the surface of cement particles, which makes cement particles negatively charged, and cement particles are dispersed due to mutual repulsion of the same charges. At the same time, because the water-reducing agent is hydrophilic, the adsorption layer is a solvated film around the cement particles, which can also hinder the cement agglomeration (space protection) so that the cement particles and secondary agglomerated particles are dispersed, releasing the water and air contained in the flocculated aggregates, thus achieving the purpose of water reduction.
2. Plasticizing action After adding water reducing agent to concrete, the fluidity can be significantly increased while keeping the water-cement ratio unchanged, which is called plasticizing of concrete. Plasticization has the effect of wetting and lubricating, besides the effect caused by adsorption and dispersion. Due to these functions of water-reducing agents, it is easy to mix concrete evenly with only a small amount of water, and the workability of fresh concrete is obviously improved.
3. The charged ions dissociated by the setting-regulating water-reducing agent in the cement-water system can be adsorbed on the surface of cement particles to increase its ζ potential, so the stability time of the system is longer. At the same time, this anion adsorption film and the water film produced by hydrogen bond association will also hinder the contact between cement particles and water, slow down hydration, and thus play a retarding role.
Preparation method of Water reducing agent Acrylic acid, sodium mentally sulfonate, ammonium persulfate, and polyoxyethylene allyl ester macromonomer were prepared into a 20% aqueous solution with deionized water. In a three-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, monomers and initiators were added dropwise in batches, and then the reaction was carried out at 75℃for a certain time. After the reaction, the PH value was adjusted to 7 ~ 8 with 20% NaOH aqueous solution, and the yellow or reddish brown polycarboxylate superplasticizer with 20% concentration was obtained. Water reducing agent means that under the condition of constant workability of concrete and cement dosage, it can reduce mixing water consumption and improve concrete strength; Or under the condition of constant workability and strength, it can save the dosage of cement.
Price of Water reducing agent Water reducing agent particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Water reducing agent. A large amount of large amount will be lower. The price of Water reducing agent can be found on our company's official website.
Water reducing agent supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including molybdenum Silicide, nitride powder, Water reducing agent, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Water reducing agent, you are welcome tocontact usor inquire any time.
