Research on the application of new functional materials in concrete

Abstract

The self-made polycarboxylic acid water reducer was used as a dispersant to investigate its influence on the dispersion property of new functional material graphene slurry. The dispersion technology in the preparation process of new functional material and the influence of the dosage of new functional material on the performance of concrete were studied. The results showed that the self-made polycarboxylic acid water reducer as a dispersant can improve the dispersibility of the new functional material graphene in water. When the ultrasonic dispersion time is 40min, it can be used to discharge bubbles in the graphene dispersion solution and improve the strength of concrete. By means of manual mixing, the concrete containing the dispersible liquid of the new functional material has less slump and less expansion loss at 1h, and higher compressive strength at 3 d, 7 d, and 28 d. The 7 d and 28 d compressive strength of concrete can be significantly improved when the content of new functional material graphene dispersion is 0 ∼ 0.23 %, and the optimal content of graphene dispersion is 0.05 %.