Influence of Waste Tire Rubber on Fresh and Hardened Properties of Self-Compacting Rubberized Concrete (SCRC)

Bušić, Robert; Miličević, Ivana

doi:10.1007/978-3-030-22566-7_1

Cited by 2 publications

(7 citation statements)

References 10 publications

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“…The test results for the fresh SCC properties are presented in Table 2, and as expected they coincide with those presented in [41]. The sieve segregation test was performed as needed after visually inspecting the fresh concrete paste.…”

Section: Fresh State Propertiessupporting

confidence: 72%

“…Materials used in this experiment were adopted from the authors' previous work [41], as well as three SCC mixture designs that were defined as optimal for future studies of SCC with CR (Table 1). Mixtures with constant water-to-cement ratio (w/c) of 0.4 by weight were produced.…”

Section: Materials and Mixture Designmentioning

confidence: 99%

“…The reference SCC mixture SCC-R and mixtures with 10 and 15% of CR and 0 and 5% of silica fume (SLF) (SCC-10-0 and SCC-15-5) were designed according to the European guidelines for SCC [53]. In a previous study [41] it was observed that the slump flow class was changed from SF3 to SF2 and SF1 when the proportion of CR was increased from 0 to 10 and 15%, respectively. Since the slump flow class, SF3 is widely used in concrete members with congested reinforcement, the amount of superplasticizer (SP) was not kept constant in this study.…”

Section: Materials and Mixture Designmentioning

confidence: 99%

“…Therefore, a viscosity-modifying admixture (VMA) was added to the SCC mixture without SLF to prevent bleeding. A pan mixer with a capacity of 50 L was used, utilising a mixing procedure adopted from a previous experiment [41]. Immediately after mixing, the properties of the fresh SCC were investigated.…”

Section: Materials and Mixture Designmentioning

confidence: 99%

“…The same authors [37] investigated the resistance of SCRC to high temperatures (400 °C and 800 °C), and they again reported a reduction in the compressive strength for specimens in which fine aggregate was partially replaced by rubber (size 0-4 mm). Previous studies of SCRC [38][39][40][41] concluded that up to 15% recycled rubber and 5% silica fume can be used to achieve the required properties of SCC, both in the fresh and hardened state, suitable for structural members with densely distributed reinforcement. However, as the literature review indicates, consistent experimental work regarding the effects of waste tire rubber on the durability and thermal properties of SCC is needed.…”

Section: Introductionmentioning

confidence: 99%

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Durability Performance and Thermal Resistance of Structural Self-Compacting Concrete Improved with Waste Rubber and Silica Fume

et al. 2023

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Waste rubber takes many years to decompose, and thus the increasing number of tires in the world can be characterised as an important environmental issue, which generated the idea of implementing crumb rubber in structural self-compacting concrete (SCC). According to previous studies, up to 15% recycled rubber and 5% silica fume can be used to achieve the required properties of SCC in reinforced structural members with congested reinforcement, both in the fresh and hardened state. Most studies have focused on investigating the mechanical properties of self-compacting rubberised concrete (SCRC), and only a small number of studies investigated the durability and thermal properties, with contradictory findings. This study aims to determine the influence of crumb rubber and silica fume on the durability and thermal properties of SCC, with an emphasis on the selection of environmental exposure classes, the safety of using such a material in reinforced concrete members, and additional serviceability and durability requirements. This was further advanced by investigating the micro-structure of hardened SCC with recycled rubber and silica fume using a scanning electron microscope (SEM). Test results indicate that the combining effect of crumb rubber and silica fume has a positive impact on the thermal and durability properties of SCC.

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Section: Fresh State Propertiessupporting

confidence: 72%

Section: Materials and Mixture Designmentioning

confidence: 99%

Section: Materials and Mixture Designmentioning

confidence: 99%

Section: Materials and Mixture Designmentioning

confidence: 99%