STUDY OF THE IR SPECTRUM AND CHEMICAL PROPERTIES OF A SYNTHESIZED SUPERPLASTICIZER FOR CONCRETE
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The article investigates the chemical structure, IR-spectral characteristics, and effects of a superplasticizer synthesized from a pyrolysis by-product on the rheological properties of cement systems. Pyrolysis oil containing at least 85% naphthalene was used as the main raw material. IR spectroscopy revealed characteristic sulfonic functional groups in the synthesized product. The rheological properties of cement mixtures were evaluated using the mini-cone method. The results showed that the addition of 0.2–1.0% superplasticizer improved the flowability of cement paste and reduced water demand by approximately 15–20%. Excessive addition, however, may adversely affect the rheological properties of the cement system. The obtained results indicate that pyrolysis products can be considered a promising raw material for the production of effective superplasticizing additives for cement and concrete materials.
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