Análise de biopolímero derivados da proteína do leite bovino para confecção de aditivo para produção de concreto

Abstract

The use and development of materials are crucial in the socio-economic growth of the country, in the construction sector we have that chemical additives for cementitious compounds are essential elements for the current level of innovation, among one of the most promising materials are biodegradable polymers and biopolymer. Thus, the work aims the study of a biodegradable polymer with additive function for cementitious compounds satisfying technical, environmental, economic and with greater performance and sustainability. The study analyzes the use of a biodegradable polymer (complexes of whey protein with ț-casein) extracted from unhealthy deteriorated milk as a collaborative agent in the properties of cementitious compounds. The study aimed to analyze the interaction of the materials used and identify the chemical phenomena related to hydration that follow the addition of water to the system, to characterize the samples using Raman spectroscopy. The obtaining of eco-efficient materials applicable in the construction industry. As a result, it was observed that the use of the solutions of the complexes of whey protein with ț-casein favors the cement hydration process, which can retard the setting of the binder; such result is desirable, as it provides a greater flexibility to the setting time, increasing the workability time of the binder. Significant water reduction occurred in the mixtures with 1% and 1.5% of the additive dosages, thus, as the dilation of the grip time occurred in all dosages tested in relation to the reference sample, this fact benefits the application of the compounds cementitious field in case of special works. The samples presented a white supernatant that did not react with cement causing damage to the hydration reaction and the samples also presented a smooth and shiny layer that contributed to the deformation of the samples. Finally, due to its simple production, the biodegradable polymer generates a low cost agent, and it is worth mentioning that the reuse of tailings makes the product viable as well as enabling the obtaining of eco-efficient materials applicable in the construction industry.