Production of Pre-stressed Reinforced Concrete Hollow-core Slabs Using Local Raw Materials

Abstract

 Pre-stressed reinforced concrete hollow-core slabs were manufactured at the factory of LLC “Mixori” using modern technology. Involvement of the academic staff from the Civil and Industrial Construction Technologies and Building Materials department of the Construction Faculty at the Georgian Technical University, along with the highly qualified personnel of the host company, facilitated the study of the physical and mechanical properties of the unique construction in an accredited laboratory. The binding material used was CEM I 42.5 R class cement, produced by LLC "HeidelbergCement," which was tested in accordance with relevant standards. The cement met all standard requirements. The aggregates used for concrete production were supplied from the Ksovrisi quarry. The sand and gravel (5–10 mm) met all standard requirements based on the determination of their physical and mechanical properties. Based on the obtained results, a concrete mix was developed, and testing of the structure confirmed the durability and high strength of the pre-stressed reinforced concrete hollow-core slabs, produced using the new thermal technology, under both dynamic and static loads.