Forskellige vandreducerende satser

Den vandreducerende sats på polycarboxylsyre syrebaserede vandreducerende midler er væsentligt højere end for naphthalenbaserede vandreducerende midler. Under den betingelse, at den samme vandreducerende hastighed overskrides, kan doseringen af ​​polycarboxylsyre-baserede vand-reducerende midler være mindre end den af ​​naphthalen-baserede vand-reducerende midler; desuden, efterhånden som doseringen stiger, overstiger den ultimative vandreducerende hastighed af polycarboxylatvandreducerende midler langt den for naphthalenbaserede vandreducerende midler, mens doseringen af ​​naphthalenbaserede vandreducerende midler overstiger grænsen, når doseringen er omkring 2,0 %, hvilket viser, at polycarboxylatvandreducerende midler er mere egnede, er det mere egnet at fremstille lavt vand-cementforhold højstyrkebeton.

Forskellige virkningsmekanismer

Virkningsmekanismen for polycarboxylatvandreducerende middel er hovedsageligt baseret på sterisk frastødning. Udover sterisk afstødning har den også en stærk luftinddragende isolation “bold” virkning og virkningen af ​​at reducere faststof-væske grænsefladeenergi; naphthalenseriens vandreducerende middel har Virkningsmekanismen er hovedsageligt elektrostatisk frastødning, og der er næsten ingen andre gavnlige effekter på vandreduktion.

Hvis man sammenligner polycarboxylatvandreducerende midler og naphthalenbaserede vandreducerende midler, hvilket er bedre?

• fra perspektivet om brugervenlighed, polycarboxylat superplastificeringsmiddel has strong plasticity retention and can effectively control the loss of slump over time without having much impact on the hardening time of concrete. It has a large reinforcing effect and has shrinkage resistance, which can more effectively improve the impermeability and frost resistance of concrete, and can improve the durability of concrete to a greater extent than naphthalene-based water reducing agents.

• From a price point of view, the price of naphthalene-based water-reducing agents is generally cheaper than that of polycarboxylate water-reducing agents. However, taking into account the dosage and use effect, the cost of using polycarboxylate water-reducing agents may be lower.

• From the perspective of environmental protection performance, the production process of naphthalene-based water-reducing agents has certain pollution to the environment, while polycarboxylate water-reducing agents adopt environmentally friendly green synthesis production processes, which can save cement, improve concrete performance, and promote green concrete, Sustainable development of low-carbon concrete technology.

In summary, polycarboxylate water-reducing agents are better than naphthalene-based water-reducing agents. Polycarboxylate water-reducing agents are also a major trend in the development of water-reducing agents in the future.

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