Durability Properties of Concrete Supplemented with Recycled CRT Glass as Cementitious Material

Abstract

This paper presents the testing of the durability of concrete where a part of cement was replaced with ground panel cathode ray tube glass (CRT) finer than 63 µm. The percentage of cement replaced with glass is 5%, 10%, 15%, 20%, and 35%, by mass. The highest percent share of mineral admixtures in CEM II (Portland-composiste cement) cement was chosen as the top limit of replacement of cement with glass. In terms of the concrete durability, the following tests are performed: freeze-thaw resistance, freeze-thaw resistance with de-icing salts-scaling, resistance to wear according to the Böhme test, sulfate attack resistance, and resistance to penetration of water under pressure. A compressive strength test is performed, and shrinkage of concrete is monitored. In order to determine the microstructure of concrete, SEM (Scanning Electron Microscopy) and EDS (Energy Dispersive X-ray Spectroscopy) analyses were performed. The obtained research results indicate that the replacement of a part of cement with finely ground CRT glass up to 15% by mass has a positive effect on the compressive strength of concrete in terms of its increase without compromising the durability of concrete. The results obtained by experimental testing unequivocally show that concrete mixtures made with partial replacement (up to 15%) of cement with finely ground CRT glass have the same freeze-thaw resistance, resistance to freeze/thaw with de-icing salt, resistance to wear by abrasion, and resistance to sulfate attack as the reference concrete. In terms of environmental protection, the use of CRT glass as a component for making concrete is also very significant.

Short glass fiber reinforced polymer concrete with addition of waste cathode-ray tube (CRT) glass

“…Wielu naukowców pracowało nad wykorzystaniem tych odpadów w formie dodatku do cegieł, płytek ceramicznych i kamionki wypalanej, w celu polepszenia ich właściwości (37,38). Kolejną, już wcześniej wspomnianą metodą jest dodawanie tego szkła do betonu, jako składnika zastępującego częściowo cement (28,39), lub pełniącego rolę kruszywa (40,41). Zwiększeniem zakresu materiałów konstrukcyjnych, zawierających te odpady ze stłuczki szklanej, może być także ich dodatek do polimerobetonów (42, 43).…”

“…Many researchers have worked on using it as an additive to bricks, ceramic tiles and fi red stoneware in order to improve their properties (37,38). Another, already mentioned method, is the use of the described waste in concrete as a component that partially replaces cement (28,39) or as a fi ller that acts as aggregate (40,41). An extension of the creation of construction materials containing cullet waste may also be the manufacturing of polymer concrete based on them (42,43).…”

Properties of Geopolymers Based on Metakaolin and Soda-Lime Waste Glass

“…The potential use of glass cullet as a non-clinker component of cement is not clear. Previous research [21][22][23][24][25] has proven that the use of ground glass instead of cement had no negative effects on the properties of cement after a long period of maturation. In turn, in [26][27][28][29][30], it was stated that the effect of glass on the expansion of the obtained products depends on the grain size of the ground glass.…”

Potential for Use of Recycled Cathode Ray Tube Glass in Making Concrete Blocks and Paving Flags

“…In Se 2016, around 3080 tons of CRT glass were collected. The current practice in Serbi the collected CRT glass is exported to other countries and the countries taking in cycled CRT glass are paid for that [5]. The three basic glass elements of a CRT scr neck glass, funnel glass and panel glass (Figure 1).…”