• Malaiškienė, Jurgita
• Vaičienė, Marija

Abstract

<jats:p>In the paper, the changes of properties of expanded clay concrete when a part of the coarse aggregate is re- placed with plastic waste are discussed upon. First of all, standard expanded clay concrete specimens were formed,and then 5%, 10%, 20% share of the fraction 4/8 of the expanded clay aggregate was replaced with plastic waste. Theproperties of expanded clay concrete, such as the density of the mixture, the slump, the density of the dried expandedclay concrete specimens, the ultrasonic pulse velocity, the water absorption, and the compressive strength, were estab- lished and analyzed; in addition, a microstructural examination was carried out. It was found that upon striving to usethe maximum share of waste (20%), it is possible to ensure about 4% higher density of expanded clay concrete andalmost 50% higher compressive strength, as compared to expanded clay concrete of the control specimens. SEManalysis showed that the same minerals, i.e. portlandite, ettringite, calcite and calcium hydro silicates were identifiedin specimens from all batches. </jats:p>

Topics

• density
• impedance spectroscopy
• mineral
• polymer
• strength
• ultrasonic
• Calcium