Application of Glass Fiber Waste Polypropylene Aggregate in Lightweight Concrete _ thermal properties

2017 5th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

机械制造;材料科学;土木建筑工程

Citek, D.^1 ; Rehacek, S.^1 ; Pavlik, Z.^2 ; Kolisko, J.^1 ; Dobias, D.^1 ; Pavlikova, M.^2

Klokner Institute - CTU in Prague, Prague, Czech Republic^1

CTU in Prague, Prague, Czech Republic^2

关键词: Concrete composition;    Concrete properties;    Fiber reinforced polypropylene;    Partial substitution;    Physical parameters;    Storage properties;    Waste polypropylene;    Water-saturated state;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/324/1/012025/pdf
DOI  :  10.1088/1757-899X/324/1/012025

来源: IOP

【 摘 要 】

Actual paper focus on thermal properties of a sustainable lightweight concrete incorporating high volume of waste polypropylene aggregate as partial substitution of natural aggregate. In presented experiments a glass fiber reinforced polypropylene (GFPP) which is a by-product of PP tubes production, partially substituted fine natural silica aggregate in 10, 20, 30, 40 and 50 mass %. Results were compared with a reference concrete mix without plastic waste in order to quantify the effect of GFPP use on concrete properties. Main material physical parameters were studied (bulk density, matrix density without air content, and particle size distribution). Especially a thermal transport and storage properties of GFPP were examined in dependence on compaction time. For the developed lightweight concrete, thermal properties were accessed using transient impulse technique, where the measurement was done in dependence on moisture content (from the fully water saturated state to dry state). It was found that the tested lightweight concrete should be prospective construction material possessing improved thermal insulation function and the reuse of waste plastics in concrete composition was beneficial both from the environmental and financial point of view.