Impactos ambientais gerados na fabricação do cimento portland e uso de resíduos como alternativa para mitigá-los: uma análise bibliométrica

Abstract

Portland cement is a hydraulic binder, considered the most consumed material in the field of civil construction, which is obtained through the grinding of Portland clinker and its production method causes several socio-environmental damages. With this, the objective of this research is to quantify studies on the subject, demonstrating from data and indicators of national and international publications the importance of waste from other industrial sectors in the manufacture of cement as an alternative to mitigate the impacts caused during its manufacturing process. The methodology employed consisted of two main stages: the first consists of a survey of national and international publications, between 2011 and 2021, through the Scopus database. Keywords that were related to the object of study of this research were inserted in the search field, and the query was limited to the “title, abstract and keywords” of the works. In addition, the document type was articles only and in the final stages of publication. The second and last stage consists of a refined research, where a bibliometric analysis of the studies was carried out. Based on the results, it can be seen that in the last decade there has been an increase in the number of works published on the subject and that countries such as Brazil, Spain, China and India are the ones that most published articles that portray the use of waste in cement production. Among the by-products researched by the authors, the following can be cited: waste from civil construction (RCC), glass, red ceramics, Water Treatment Station (ETA), Sewage Treatment Station (ETE), from agroindustry, mining, ashes (from sugarcane bagasse, rice husks, etc.), from the pulp and paper industry, among others. Finally, with the high demand for Portland cement, the tendency is for an increase in the number of studies aimed at sustainable solutions in the manufacturing process by the cement industries, however, the amount of waste available is still not enough to meet the high consumption of this material.