Оцінка впливу вторинних мінеральних компонентів на властивості сухих будівельних сумішей

Abstract

У роботі розглянуто можливості використання відходів промисловості та будівництва як вторинної сировини для виробництва сухих будівельних сумішей. Проаналізовано вплив золи-винесення, доменного гранульованого шлаку, бетонного та цегляного бою на фізико-механічні властивості композиційних матеріалів.

The paper investigates the efficiency of using industrial and construction waste as secondary raw materials in the production of dry building mixes. The influence of fly ash, granulated blast furnace slag, recycled concrete aggregate, and crushed brick waste on the physical and mechanical properties of composite materials was analyzed. Experimental studies were carried out to determine density, compressive strength, and water absorption of dry building mixes containing different amounts of secondary components. The results showed that the incorporation of up to 30% recycled materials improves the performance of the mixtures, increasing compressive strength up to 14,5 MPa while reducing density to 1710 kg/m³ and water absorption to 6,8%. The combined use of fly ash and recycled concrete aggregate demonstrated the highest efficiency, providing a strength increase of nearly 17% compared to the reference mixture. In addition, the use of recycled materials contributes to reducing natural resource consumption, lowering production costs by 10-15%, and decreasing the carbon footprint by 15-20%. The obtained results confirm the feasibility of integrating industrial and construction waste into the technology of dry building mixes and support the principles of sustainable development and circular economy in the construction industry.