Investigation of the Engineering Properties of Mortars Produced Using Recycled Asphalt Pavements and Pumice Powder under the Effect of Acid

Authors : Meryem Rumeysa Kayıhan, Behcet Dündar, Emriye Çınar Resuloğulları

Pages : 513-529

Doi:10.33484/sinopfbd.1602495

View : 26 | Download : 174

Publication Date : 2025-12-24

Article Type : Research Paper

Abstract :Asphalt pavements play a fundamental role in the formation of the road superstructure and after completing their service life, they are excavated for renewal works and waste materials are produced. The use of such wastes provides economic and environmental advantages, enabling energy saving, reduction of environmental pollution, cost reduction and reduction of landfill areas. Recycled asphalt waste (RAP) has an important place in sustainable material use. In this study, the engineering properties of mortars with Pumice Powder (PP) in hydrochloric acid (HCl) environment were evaluated in detail. In the study, CEM I 42.5/R type Portland cement was used as binder, PP as mineral additive, and 0-4 mm crushed sand and RAP were used as fine aggregate. In the experimental design, different mixtures were obtained by replacing 10%, 20% and 30% of the cement weight with PP, and 0%, 25%, 50%, 75% and 100% of the crushed sand with RAP. Spreading, water absorption, porosity, ultrasonic transmission rate, capillary water absorption, flexural and compressive strength tests were applied to the produced mortar samples after 7 and 28 days of standard curing period of the samples. In addition, the physical and mechanical changes were investigated by exposing the samples kept in the curing pool for 28 days to the HCl solution for 7 and 28 days. The results revealed that the best performance was obtained when PP was used at a rate of 10% and RAP was used at a rate of 25%.
Keywords : Geri Dönüştürülmüş Asfalt Atığı, Pomza Tozu, Hidroklorik Asit, Asit Direnci

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