减水剂各种小料的作用（Water reducing agent, the role of various small materials）.doc

减水剂各种小料的作用（Water reducing agent, the role of various small materials） Calcium lignosulfonate Calcium lignosulfonate is characterized by strong decomposition, cohesiveness and crab binding. As mentioned above, because the molecules of calcium lignosulfonate was different, with different degrees of dispersion, Calcium Lignosulfonate with water-soluble lyophilic colloid properties, particle with electric charge, is a kind of surfactant, surface adsorption in various solid particles, but also because it is the strong acid into the salt. So can carry out ion exchange, moreover because the organization structure in lignin sulfonic acid there exists a variety of active groups can produce more polymerization or internal condensation effects with other compounds. Based on the above characteristics of calcium lignosulfonate, it can be used as concrete water reducing agent. Cement slurry diluent, sand consolidation agent, pesticide emulsifier, dispersant, dressing leather tanning agent, ceramic or refractory plasticizer, wells or gel dam grouting agent, water treatment agent, processing of coal...... Wait。 At present, calcium lignosulfonate has been widely used in Chinas construction, water treatment, hydropower, metallurgy, petroleum, mining, ceramics and other industries. Two. The main application of calcium lignosulfonate products in concrete water reducer 1. The mechanism of water reducing and strengthening effect of calcium lignosulfonate products in concrete Calcium lignosulfonate and sodium lignosulfonate water reducing agent is a kind of surfactant. After adding concrete, the cement is negatively charged because the hydrophobic groups are adsorbed on the surface of cement particles. The cement particles with the same charge charge repulsion effect in mutual exclusion from under the cement dispersion, then the flocculate structure become dispersed structure, flocculent condensation free water body is released, so as to achieve the purpose of reducing agent. The observat