Mechanical and durability properties of waste rubber fiber concrete with and without silica fume

Gupta, Trilok; Chaudhary, Sandeep; Sharma, Ravi Kumar

doi:10.1016/j.jclepro.2015.07.081

Cited by 269 publications

(97 citation statements)

References 42 publications

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“…While the decrease in MOE is attributed to higher deformation and lower elastic modulus of CR compared to fine aggregate [10,12]. In addition, other factors such as poor bonding between CR and cement matrix, higher porosity and increased the thickness of the interfacial transition zone (ITZ) caused by entrapped air by CR during mixing, affects the stress-strain behavior of RCR as shown in Fig 5, and hence reduce MOE [11,25].…”

Section: Modulus Of Elasticity (Moe) Of Rcrmentioning

confidence: 99%

“…Several studies showed that the modulus of elasticity of concrete decreases with increase in partial replacement of fine aggregate with crumb rubber in concrete [8][9][10][11]. This is due to the higher deformation, lower stiffness, strength, and lower elastic modulus of crumb rubber compared to fine aggregate [10,12].…”

Section: Introductionmentioning

confidence: 99%

“…However, the addition of CR reduces compressive and flexural strengths in RCR pavement [13,14]. Therefore, to achieve an RCR with lower elastic modulus without much effect of strength reduction, possible ways of mitigating the strength loss with CR needed to be utilized, one of which is using Nano silica (NS) in small percentage as addition to cementitious materials [15], another option is use of silica fume as partial replacement of cement [11].…”

Section: Introductionmentioning

confidence: 99%

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Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

Mohammed¹

2017

GEOMATE

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ABSTRACT:Roller compacted concrete (RCC) pavement is subjected to repetitive loadings and bending stresses from moving vehicles. Therefore, they are susceptible to cracks due to fatigue. Dowel bars, tie rods, or steel reinforcement cannot be placed on RCC pavement due to the way they are placed, compacted and consolidated, Therefore, all loads and deformations are resisted by the concrete alone. One of the ways of reducing such effect is producing a more durable RCCP that will undergo higher deformation before cracking. This can be done by partially replacing fine aggregate with crumb rubber (CR) in RCC to produce roller compacted rubbercrete (RCR). In this study, RCR was produced by partially replacing fine aggregate with CR at levels 0%, 10%, 20%, and 30% by volume. Nano silica (NS) was then added at 0%, 1%, 2%, and 3% by weight of cementitious materials to mitigate loss in strength, and their effect on modulus of elasticity (MOE) was studied. The MOE of RCR decreases with increase in CR and increases with NS addition. Also at 10% CR the MOE of RCR increases. Conversely, NS decreases the ductile behavior of RCR by making it more rigid. Power function was not suitable for the relationship between MOE and compressive strength of RCR as recommended by ACI 318, therefore linear model was developed.

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Section: Modulus Of Elasticity (Moe) Of Rcrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

Mohammed¹

2017

GEOMATE

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“…Sohrabi and Karbalaei conducted an experimental study on compressive strength of concrete containing cemented rubber and micro-silica with a watercement ratio of 0.5 and they found out that increased micro-silica increases compressive strength and they cited its reason filling nano-metric cavities in the cement paste and dandifying the structure [24]. Guneyisi et al Also conducted a study on concrete containing rubber and micro-silica, and reported an increase in compressive strength with an increase in micro-silica, and also attributed this increase to filling the micro-silica cavities [25].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Compressive Strength of Micro- and Nano-silica Concrete by Statistical Method

Zarehparvar-Shoja

Eskandari‐Naddaf

2017

CivileJournal

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In recent years, the use of nano-particles to improve the properties of concrete has created a new perspective on concrete technology. Studies in this field indicate improved concrete properties and higher strength by adding nano and micro silica particles to concrete mixes. In this regard, 12 mixing designs with different amounts of these admixtures with three types of cement strength classes (525,425,325) and 36 cubic samples (10 × 10 × 10) were designed and tested to measure compressive strength, of which we have only used 6 mixing plans in this research. The purpose of this research is to present a new method for concrete mix design by optimizing principles. Therefore, in this paper, the Taguchi statistical methods and the factorial design of the optimal mixing plan for this type of concrete are used to reduce the number of experiments to predict the optimal composition of the materials. The results obtained from the MINITAB software show that the effect of combined micro-silica and nano-silica on the compressive strength is in one direction and the effect of these two factors is more than cement strength grade of the cement and also the optimal value for micro-silica and nano-silica are estimated to have an optimum amount of micro-silica and nano-silica of 95 and 38 grams, respectively.

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“…Many other types of fibers present a remarkable potential as reinforcement in cementitious products, e.g. carbon [2,3], synthetic polymers [4], rubber [5], glass fiber reinforced plastic [6] or steel [7,8], although each has either economic and environmental disadvantages compared to cellulosic fibers. However, when used with Portland cement, this type of fibers undergoes alkaline degradation, leading to deterioration in flexural properties over time.…”

mentioning

confidence: 99%

Optimization of the MgO SiO2 binding system for fiber-cement production with cellulosic reinforcing elements

et al. 2016

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Mechanical and durability properties of waste rubber fiber concrete with and without silica fume

Cited by 269 publications

References 42 publications

Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

Optimizing Compressive Strength of Micro- and Nano-silica Concrete by Statistical Method

Optimization of the MgO SiO2 binding system for fiber-cement production with cellulosic reinforcing elements

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