PLEEEEASEE HELP ME!!! Can someone help me? I'm doing a job for college and needed to know if this text is spelled right. I will be eternally grateful if you can correct it for me! Concrete is a construction material widely used in the construction industry, being of fundamental importance the knowledge of its components employed in its production. The choice to work with such material comes from the significant benefits and properties obtained through its use as: water resistance, obtaining structural elements with various shapes and sizes and availability of constituents (cement, small and large aggregates and water) for their obtaining. The characteristics of the materials found for the execution of the concrete can vary from region to region, depending on the availability and costs of the components, since the properties of the concrete vary from the characteristics of the materials used. The large aggregate is one of the constituents adopted that may vary depending on the locality in which the concrete will be executed, the crushed stone and the pebble being rolled the most applied variations in the concrete production. The characteristics of both aggregates differ mainly in: surface texture and shape, where they can be considered rough and angular for crushed stone, and smooth and rounded for rolled pebble. With the purpose of analyzing the influence of large aggregates (crushed stone and rolled pebbles) on concrete production, five traces were developed: T.1 (19 mm crushed stone), T.2 (crushed stone 25 mm), T. 3 (binary mixture of crushed stone 60% 19 mm and 40% 25 mm), T.4 (rolled pebble 19 mm) and T.5 (binary mixture of rolled pebble 60% 19 mm and 40% 25 mm). The aggregates were characterized according to the standards in force, as well as the concrete in the fresh states (workability and density) and hardened (compressive strength) for the ages of 3, 14 and 28 days. The trait adopted for all concretes was 1: 2: 3 (cement: sand: aggregate) with a fixed a / c ratio of 0.50. The workability of concrete with rolled pebbles increased by at least 500% compared to concrete with crushed stone. The densities of the concrete with rolled pebbles and with crushed stone had results within the borders adopted by the literature. The compressive strength of the concrete with rolled pebbles was lower than the concrete with crushed stone, having an approximate reduction of 30%.