Utilization of waste rubber in non-structural applications

Optimisation of rubberised concrete with high rubber content: An experimental investigation

“…In fact, the ITZ between rubber aggregates and cement paste increased from 6.65 m to 13.44 m at 10% and 50% sand volume replacement, respectively [38]. However, w/b was often varied with rubber content [38], which could Aiello and Leuzzi [17] Aliabdo et al [32] Batayneh et al [25] Bing and Ning(w/b=0.4) [33] Bing and Ning(w/b=0.6) [33] Correia et al [34] Flores-Medina et al [35] Ling [36] 3 possibly affect the hydration kinetics, mix porosity and ITZ density and width. Scanning Electron Microscopy (SEM) images have shown a lack of bonding (gap) between the rubber and cement paste at their ITZ, as well as limited hydration products surrounding the rubber particles [37][38][39].…”

Composites with recycled rubber aggregates: Properties and opportunities in construction

“…Therefore, rubber aggregate can increase the energy absorption capacity of the composite during loading. Aliabdo (2015) investigated the compressive strength of rubber composites with an epoxy resin matrix.…”

“…Rubber aggregates can be round, flaky or fibrous, which can affect their aspect ratio (see section 3.2). Small size ground rubber is typically round (Figure 3a), whereas shredded and scrap rubber (size>20 mm) is generally flaky (Figure 3b) [Aliabdo 2015]. In general, rounder aggregates favour concrete packing and compactness and therefore they have been recommended for use in concrete [Mehta 2013].…”

“…The polymeric characteristics, low density and thermal conductivity of rubber aggregates have been shown to reduce the thermal conductivity of rubberised concrete composites [Hall 2012] and mortars [Corinaldesi 2011]. Aliabdo (2015) studied the thermal conductivity (k) of non-structural concrete with rubber aggregates. He reported a 57% reduction of k when 100% of the concrete sand was replaced with ground rubber.…”

Influence of polyacrylic ester and silica fume on the mechanical properties of mortar for repair application

“…Previous studies demonstrated that the addition of polymer could improve the splitting tensile strength of cementitious materials. Aliabdo et al 24 reported that the concrete including SBR showed a 21%-29% increase in splitting tensile strength compared to the control sample. Medeiros et al 25 stated that splitting tensile strength increased with the addition of VAE copolymer and acrylate polymers due to the water-reducing effect of polymer.…”