Abstract
The materials based on concrete with an addition of rubber are well-known. The interaction between concrete components and rubber particles is in the majority cases insufficient. For this reason, different substances are introduced into concrete-rubber systems. The aim of this paper is to establish the influence of five different polymer additives, i.e., 1. an aqueous dispersion of a styrene-acrylic ester copolymer (silanised) (ASS), 2. water dispersion of styrene-acrylic copolymer (AS), 3. anionic copolymer of acrylic acid ester and styrene in the form of powder (AS.RDP), 4. water polymer dispersion produced from the vinyl acetate and ethylene monomers (EVA), 5. copolymer powder of vinyl acetate and ethylene (EVA.RDP)) on the properties of the self-leveling rubberised concrete. Scanning electron microscopy has allowed to establish the interaction between the cement paste and rubber aggregates. Moreover, the compressive strength and flexural strength of the studied materials were evaluated. The results indicate that the mechanical properties depend extensively on the type as well as the amount of the polymer additive introduced into the system.
Highlights
Academic Editors: Jeong Gook JangIt is an enormous challenge to cause vulcanised rubber to degrade in the natural environment
In an aim to form concrete mixtures, ordinary Portland cement (OPC), calcium aluminate cement (CAC), fine aggregates, ethylene propylene diene monomer rubber aggregates (EPDM), superplasticiser and polymer additives that differed in chemical structure and physical state were used
An aqueous dispersion of a styrene-acrylic ester copolymer; Water dispersion of styrene-acrylic copolymer; Anionic copolymer of acrylic acid ester and styrene in form of powder; Water polymer dispersion produced from the monomers vinyl acetate and ethylene; Copolymer powder of vinyl acetate and ethylene
Summary
It is an enormous challenge to cause vulcanised rubber to degrade in the natural environment For this reason, many scientists are looking for new possibilities to use that waste material. Rubberised concrete is a type of clean and eco-friendly composite, which allows utilisation of rubber waste. The total number of produced concrete for the building industry equals 4.4 billion tons per year [11]. Combining these two materials provides an opportunity to utilise waste and obtain novel composites with unique properties
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