The implementation of simple additive weighting method in choosing wall bricks

Abstract

Wall bricks are a fundamental component of wall structures that provide coverage and separation between indoor and outdoor spaces. In addition to their covering function, wall bricks also serve as waterproofing, soundproofing, and heat insulation agents. Nowadays, wall bricks come in a wide variety of types, sizes, strengths, and materials, each with its own unique production process. Bricks are typically divided into two primary categories: fired bricks, which include burnt solid bricks and fired hollow bricks, and unburnt bricks, which include autoclaved aerated concrete (AAC) blocks, silicate blocks, and lightweight concrete blocks. Wall bricks have a significant impact on various factors such as static load, soundproofing, heat insulation, cost, construction time, and structural solutions, including foundation depth. Therefore, it is essential to evaluate and select wall bricks from an economic-technical standpoint. There are many multiobjective decision-making methods available to choose an option that satisfies given criteria. The article introduces the results of calculation, evaluation, and selection of wall bricks using the Simple Additive Weighting (SAW) method with a set of criteria: static load, total thermal resistance, construction time, price, and environmental friendliness. Calculation and comparison results show that autoclaved aerated concrete (ACC) blocks are a good choice due to their outstanding advantages such as light weight, low thermal conductivity, and environmental friendliness. They are most suitable for the goal of reducing power consumption for the building’s ventilation and air conditioning system and using energy effectively.

Keywords: Multi criteria analysis; method SAW; solid clay bricks; hollow clay bricks; concrete brick; lightweight concrete - autoclaved aerated concrete bricks (ACC); Calcium silicate bricks.