Title Lengvojo betono su perdirbto polietileno ir pūsto molio užpildais savybių palyginimas
Translation of Title Comparison of characteristics of lightweight concrete with recycled polyethylene and expanded clay aggregates.
Authors Zinkevičius, Kipras ; Rumšys, Deividas ; Bačinskas, Darius ; Spudulis, Edmundas ; Malaiškienė, Jurgita
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Is Part of Inžinerinės ir edukacinės technologijos = Engineering and educational technologies.. Kaunas : Kauno technikos kolegija. 2022, Nr. 1, p. 10-17.. ISSN 2029-9303
Abstract [eng] The article analyses the possibility of using high and low density polyethylene waste as a filler in lightweight concrete and the comparison of lightweight concrete properties made of polyethylene waste and expanded clay aggregates. Hydration kinetics studies of concrete specimens with different aggregates were performed using ultrasonic pulse velocity measurements. The aggregates of high and low density polyethylene plastic waste with low water absorption and water resistant surface were used for the experimental study. It was determined that the growth rate of the strength of concrete with low water absorption plastic waste aggregates after 7 days of hardening decreased significantly. The density of these samples is 1950–2021 kg m3 and the compressive strength is not less than 42 MPa. Using pre-moistened expanded clay aggregate with a similar cement mortar composition, the concrete density was 1900 kg/m3 and the compressive strength was up to 70.2 MPa. Although, the mechanical properties of pre-moistened expanded clay are similar to those of plastic aggregate waste; pre-moistened expanded clay provides a better hydration process for cement, so lightweight concrete absorbs less water, expanded clay aggregate provides a better cement hydration process, more dense structure, making lightweight concrete less water absorbing.
Published Kaunas : Kauno technikos kolegija
Type Journal article
Language Lithuanian
Publication date 2022