Evaluation of Sustainable Development Indicators of Infrastructures by Replacing Natural Pozzolans with High Silicate and Alumina in Cement-Based Mortar

Abstract

The focus on sustainable development is increasing and it is given great importance. Sustainability be able to meet the needs of future generations and mitigate serious risks such as global warming. Cement is one of the building materials which no construction on the ground is possible to build. Cement production increases energy consumption and increases the production of greenhouse gases, especially carbon dioxide. In this experimental study, mechanical behaviour (compressive strength) and sustainable development indicators of cement mortar containing natural pozzolans consist of high silicate aluminate with different percentages (6, 13 and 20%) partially substitute with cement in mortars with 8 mix designs and variables were sand and water to cement ratio with strength of up to 13 MPa have been investigated. Findings showed that the use of 13% of natural pozzolans containing high silicate and aluminate as a cement substitute after 56-days of curing increased the compressive strength of mortar by 2.23% compared to the reference samples. In addition, the analysis and evaluation of sustainable development indicators of this mortar concludes that the optimal percentage of replacement with cement in the mortar, leads to a reduction in global warming potential and energy consumption by 13% in the production of one ton of cement in the conventional way. That plays a positive role to help climate change, reducing air pollution and reduce emission of greenhouse gases.

Keywords

• sustainable development indicators
• cement mortar
• natural pozzolan
• high silicate aluminate
• infrastructure structures