Study of the effects of mechanical and chemical treatment of rubber on the performance of rubberized roller-compacted concrete pavement

Abstract

This study aims to analyze the possibility of valorizing rubber waste in roller-compacted concrete pavement (RCCP) mixes as aggregates. The rubber particles were added to the mix as partial replacement of the total volume of gravels at different rates (5, 10, 15, 20, 25, 30%). The experimental approach followed in this research consisted of studying the effects of the incorporated rubber on the mechanical properties of RCCP. The obtained results show that the incorporation of rubber changes the behavior of RCCP mixes. In presence of rubber, the RCCP became more ductile. The principal disadvantage of rubber incorporation was the decrease in the mechanical properties of RCC. To remedy this problem, the rubber particles were subjected to a treatment and silica fume was added to the mix. The obtained results showed that the performance of RCCP can be improved by modifying the surface roughness of rubber particles. Therefore, a large part of strength losses were corrected.

Mechanical Properties, Permeability, and Freeze–Thaw Resistance of Pervious Concrete Modified by Waste Crumb Rubbers

“…Waste tire rubbers are usually classified into different particle sizes, and are used as partial or full aggregate replacements in pavement materials. They have been used as additives in ordinary cement concrete and asphalt concrete for many years and are verified as a positive material in improving ductility and freeze-thaw durability [19][20][21].…”

Exploring engineering properties of waste tire rubber for construction applications - a review of recent advances

“…The chemical composition and physical properties of CR generated from tire-wastes are shown in Table 2, Table 3, and Table 4. The particles of CR produced from tires-waste are addressed and used to partially replace coarse aggregates [13] or fine aggregates [9] in concrete [36] and mortar [43]. In particular cases, tireswaste is ground and sieved to ash or powder to be used as cement replacement partially [6,31].…”

“…The use of tire waste as cement or natural aggregates in concrete production is the best solution to avoid potential environmental issues. In concrete production, crumb rubber (CR) has good flexibility [8], low stiffness [9], also the CR concrete was affected by cleanliness [10], particle size [11], shape [12], content [13], and surface' quality [12,14]. The properties of concrete containing tire waste were studied by many researchers [15][16][17][18][19][20].…”

The Efficiency of Recycling Expired Cement Waste in Cement Manufacturing: a Sustainable Construction Material

“…The incorporation of low carbon mineral additives reduces environmental impacts, produces an environmentally friendly material, and minimizes energy consumption [5,6]. These additives may offer other options such as improving certain characteristics of concrete including strength, durability, rheological, and transfer properties [7][8][9][10][11]. In addition, the variation in the percentage of addition to the cement contributes to the improvement of the finished product.…”