The mud content in the raw materials of concrete, sand and gravel, will have an irreversible impact on the performance of concrete and reduce the performance of polycarboxylic acid water reducer. The fundamental reason is that after the polycarboxylic acid water reducer is adsorbed by clay in large quantities, the part used to disperse cement …

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The main factors contributing to the incompatibility between admixtures and cement are as follows:2.1 Factors of the admixture itselfThe reasons within the admixture itself mainly consist of the following aspects: (1) diverse varieties; (2) disparities in structural functional groups; (3) Different degrees of polymerization; (4) Varied composition. These effects, via different means, can impact the …

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Different water reducing rates The water-reducing rate of polycarboxylic acid-based water-reducing agents is significantly higher than that of naphthalene-based water-reducing agents. Under the condition of exceeding the same water-reducing rate, the dosage of polycarboxylic acid-based water-reducing agents may be smaller than that of naphthalene-based water-reducing agents; in addition, as the dosage increases, the ultimate water-reducing …

What are the distinctions between polycarboxylate water-reducing agent and naphthalene-based water-reducing agent? Read More »

Polycarboxylate superplasticizer is a high performance water-reducing agent used for concrete. It mainly plays the role of reducing water consumption and increasing concrete strength. It is suitable for normal concrete projects with strength levels from C15 to C60 and above. The amount of additives for one cubic meter of concrete is determined according to the requirements of the …

What is the suitable dosage of polycarboxylate superplasticizer for concrete? Read More »

The use of PCE superplasticizer requires comprehensive consideration of factors such as the method of addition, adaptability, construction environment, and safety. During use, we should strictly follow the requirements determined by the product manual or test to ensure the quality of concrete and the construction effect. The following are detailed precautions for use 1. Addition …

Precautions for the use of polycarboxylic acid ether (PCE) Read More »

Here are the types of admixtures for concrete as per IS 9103 (1999): Accelerating AdmixturesThis type of admixture expedites the setting time of concrete for faster strength development. They increase the hydration rate of hydraulic cement when added to mortar or grout. They are composed of compounds like calcium chloride, calcium nitrate, or triethanolamine. They …

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Polycarboxylate superplasticizer is the third generation of high-performance superplasticizer. At present, Chengli Building Materials R&d and production of polycarboxylic acid-based high-performance water reducers can generally be divided into two categories: one is based on maleic anhydride as the main chain grafted with different polyoxyethylene (EO) or polyoxypropylene (PO) branched chains; Another methacrylic acid-based backbone grafted …

What is polycarboxylate superplasticizer? What are the main features? Read More »