STUDY ON REDUCTION OF CEMENT CONSUMPTION AND CO2 EMISSION FOR HIGH PERFORMANCE CONCRETE
Abstract
This work presents an analysis for preparation of high performance concretes with low consumption of Portland cement, and evaluates some of its properties in fresh: spreading, resistance to segregation and ability to pass; and hardened (mechanical properties): compressive strength, diametral tensile strength in compression and elastic modulus. The production of concretes with low consumption of cement Portland enables an increased sustainability in the Civil Industry based on concrete, with increased longevity of raw materials deposits, reduction of CO2 emissions and no consumption of energy and lower transportation cost. It provides several technical improvements, as lower heat of hydration, shrinkage and cracking. Based on packaging concepts and particulate dispersion, suitable choice of materials and use of mineral fillers and additions there were obtained concretes with low consumption of cement and high resistance, with relative consumption of binder materials less than 5 kg/m³ to produce 1 MPa of compressive strength. It was used the dosage methodology presented by Gomes (2002) and it was concluded that it is possible to produce a high performance concrete with reduced Portland cement consumption. Keywords: High performance concrete, Low cement consumption, Strength, Precast elements.Downloads
Published
2016-07-13
Issue
Section
Civil Engineering