With the development of society, people have put forward higher requirements for the investment saving, waste utilization, energy saving, emission reduction and low carbon of concrete materials. At the same time, the production and application of polycarboxylic acid-based water-reducing agents have made a significant contribution to emission reduction and low-carbon in the concrete industry and have also been appreciated by experts.

The carbon emissions produced by the preparation of polycarboxylic acid-based water reducing agents are low, and can even be ignored compared to the emission reduction effect of its effective application in concrete. Sun Zhenping pointed out that every ton of Portland cement produces about 0.85 tons of carbon dioxide from raw material mining, raw meal processing, clinker calcination and product grinding. As the world's largest cement producer, my country's cement industry has become an urgent task to save energy and reduce emissions in recent years. In order to reduce energy consumption and carbon emissions in the cement industry, the use of cement mixing materials and grinding aids has reached a very high level. Moreover, the energy consumption and carbon emissions of concrete also depend on the amount of cement used per cubic meter of concrete and the strength contribution rate of cement. In this demand situation, the important role of concrete admixtures and concrete water-reducing agents cannot be ignored. Mineral admixtures formed from various solid wastes directly or after slight processing have a decisive influence on the dispersion of polycarboxylate water-reducing agents.

During the application process of polycarboxylic acid-based water reducing agent, not only the adsorption and dispersion of cement particles must be considered, but also fly ash, slag powder, limestone powder, tailings (iron tailings, copper tailings, lithium tailings , coal gangue, etc.) powder on the adsorption of polycarboxylic acid-based water-reducing agents. The adsorption capacity of some admixtures may be lower than that of cement minerals, but the adsorption capacity of calcined coal gangue powder and inferior fly ash on polycarboxylic acid-based water-reducing agents is The amount of adsorption is amazing. The development of alkali-activated cementitious materials and low-carbon cement (such as LC3 cement) may make the application of polycarboxylate water-reducing agents face a more embarrassing situation, because of the special structures of metakaolin, low-temperature calcined clay, etc. This increases their adsorption capacity for polycarboxylic acid-based water-reducing agents, which can easily lead to a sharp deterioration in the dispersion effect of polycarboxylic acid-based water-reducing agents on concrete.

"In the context of the country's emphasis on energy conservation, emission reduction, greenness, and intelligence in the construction industry, the challenge posed by the concrete industry to polycarboxylate water-reducing agents is both a difficulty and an opportunity. It is precisely because of the powerful properties of polycarboxylate water-reducing agents The designability of the molecular structure has the inherent advantage of solving related problems. These challenges may become an endogenous driving force for practitioners and promote the further development of the industry. "Superplasticizers.com believes that the main development direction of polycarboxylic acid-based water reducing agents in the future. One is to solve the problem of adaptability between it and the materials in the concrete mixture while meeting the low carbon requirement. In order to solve this kind of problem, the molecular structure of the polycarboxylic acid-based water-reducing agent can be modified, or it can be improved by compounding it with other types of admixtures. However, such solutions are not yet mature at present. It still requires in-depth research by scientific researchers and practitioners.