Engineering properties of sustainable green concrete incorporating eco-friendly aggregate of crumb rubber: A review

2021 ◽  
Vol 324 ◽  
pp. 129251
Author(s):  
Shaker M.A. Qaidi ◽  
Youkhanna Zayia Dinkha ◽  
James H. Haido ◽  
Msheer Hasan Ali ◽  
Bassam A. Tayeh
Keyword(s):  
Crumb Rubber ◽  
Engineering Properties ◽  
Green Concrete

Recycling of Waste Limestone as Fine Aggregate for Conventional and Green Concretes

2018 ◽  
Vol 928 ◽  
pp. 257-262 ◽  
Author(s):  
Trong Phuoc Huynh ◽  
Chao Lung Hwang ◽  
Si Huy Ngo
Keyword(s):  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Concrete Mixture ◽  
Engineering Properties ◽  
Fine Aggregate ◽  
Normal Concrete ◽  
Design Algorithm ◽  
Green Concrete ◽  
Concrete Mixtures

This paper presents the results of the experimental works to investigate the use of waste limestone from water treatment industry as fine aggregate in green concrete. Two concrete mixtures with a constant water-to-binder ratio of 0.3 were prepared for this investigation, in which, the normal concrete mixture was designed following the guidelines of ACI 211 standard, while the green concrete mixture was designed using densified mixture design algorithm (DMDA) technology. For comparison, both types of concrete samples were subjected to the same test program, including fresh properties, compressive strength, strength efficiency of cement, drying shrinkage, electrical surface resistivity, ultrasonic pulse velocity, and thermal conductivity. Test results indicate that both concrete mixtures showed the excellent workability due to the round-shape of waste limestone aggregate and the use of superplasticizer. In addition, the green concrete mixture exhibited a better performance in terms of engineering properties and durability in comparison with the normal concrete mixture. The results of the present study further support the recycling and reuse of waste limestone as fine aggregate in the production of green concrete.

Engineering properties of rubberized concrete

1992 ◽  
Vol 19 (5) ◽  
pp. 912-923 ◽  
Author(s):  
Neil N. Eldin ◽  
Ahmed B. Senouci
Keyword(s):  
Plain Concrete ◽  
Crumb Rubber ◽  
Engineering Properties ◽  
Unit Weight ◽  
Rubberized Concrete ◽  
Portland Cement Concrete ◽  
Freezing And Thawing ◽  
Scrap Tire ◽  
Plastic Energy ◽  
Freezing And Thawing Cycles

Growing piles of discarded tires are potential sources of fire and health hazards. The current disposal methods are wasteful and costly. As a possible solution to the problem of scrap-tire disposal, an experimental study was conducted to examine the potential use of rubber aggregate (tire chips and crumb rubber) as mineral aggregate substitute in Portland cement concrete mixes. The research focused on determining the strength characteristics of rubberized concrete and examined the relationship between the size, percentage, and shape of rubber aggregate and the strength measured.Rubberized concrete was found to possess good esthetics, acceptable workability, and a smaller unit weight than plain concrete. However, it exhibited low compressive and tensile strengths and lower resistance to repeated freezing and thawing cycles than that of plain concrete. A statistical analysis of the experimental data suggested that only the percentage by volume of rubber in the mix has a significant effect on strength. The size and shape was found insignificant. Unlike plain concrete, rubberized concrete did not demonstrate the typical brittle failure. It exhibited a ductile, plastic failure, and showed the ability to absorb a large amount of plastic energy under compressive and tensile loads. Key words: rubberized concrete, concrete properties, compression, durability, failure, modulus of elasticity, slump, tension, toughness, workability.

Laboratory investigation of engineering properties of rubberized asphalt mixtures containing reclaimed asphalt pavement

2010 ◽  
Vol 37 (11) ◽  
pp. 1414-1422 ◽  
Author(s):  
Feipeng Xiao ◽  
Serji Amirkhanian ◽  
Bradley Putman ◽  
Junan Shen
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Crumb Rubber ◽  
Asphalt Mixtures ◽  
Engineering Properties ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt ◽  
The Us ◽  
Rubberized Asphalt Concrete ◽  
Environmentally Sound

An improved understanding of the rheological and engineering properties of a rubberized asphalt concrete (RAC) pavement that contains reclaimed asphalt pavement (RAP) is important to stimulating the use of these recycled and by-product materials in asphalt mixtures. The uses of RAP and rubberized asphalt in the past have proven to be economical, environmentally sound, and effective in hot mix asphalt (HMA) mixtures across the US and the world. The objective of this research was to investigate the binder and mixture performance characteristics of these modified asphalt mixtures through a series of laboratory tests to evaluate properties such as the fatigue factor G*sinδ, rutting resistance, resilient modulus, and fatigue life. The results of the experiments indicated that the use of RAP and crumb rubber in HMA can effectively improve the engineering properties of these mixes.

Crumb Rubber (CR) as an Alternative Binder to Supplement Bitumen: Nigeria as a Case Study

2013 ◽  
Vol 330 ◽  
pp. 49-52
Author(s):  
Sama’ila Saleh
Keyword(s):  
Raw Materials ◽  
Crumb Rubber ◽  
Test Method ◽  
Engineering Properties ◽  
Environmental Concerns ◽  
Cr Content ◽  
Emerging Trends ◽  
Marshall Test ◽  
Asphalt Mix

This research investigated the suitability of Crumb Rubber (CR) as an alternative binder to supplement bitumen. The emerging trends in the world has challenged researchers to seek means of converting waste to wealth partly because of the environmental concerns they pose and partly because there is a general dearth of raw materials as the stock of the existing ones are fast depleting. In this research, the traditional Marshall Test method was arbitrary used to test 20%, 40%, and 60% CR proportions replacement of bitumen against the control (0% CR). The results were assessed based on the provisions of Asphalt Institute Marshall Criteria to determine the conformity with engineering properties-Stability, Flow, and Void analysis. The results indicated that 40% CR content resulting in Stability - 11.0KN, Flow - 4.3mm and VIM-14.45% trailed those with content 0% CR, but adequate in engineering properties to replace bitumen in asphalt mix. The results meet the criteria of medium class traffic specified by Asphalt Institute (1979).

Influences of Crumb Rubber Sizes on Hot Mix Asphalt Mixture

2014 ◽  
Vol 71 (3) ◽  
Author(s):  
Gizing Sami Hamad ◽  
Ramadhansyah Putra Jaya ◽  
Norhidayah Abdul Hassan ◽  
Md. Maniruzzaman A. Aziz ◽  
Mohd Ibrahim Mohd Yusak
Keyword(s):  
Hot Mix Asphalt ◽  
Resilient Modulus ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Engineering Properties ◽  
Dry Process ◽  
Alternative Material ◽  
Partial Interaction ◽  
Pavement Construction

Crumb rubbers (CRs) have been proposed as pavement components because they are waste materials. Previous studies have attempted to find alternative material in pavement construction that act as additives or property modifier. The current study presents a laboratory experiment using CR recycled from discarded vehicle tiresas additives in hot mix asphalt (HMA). CR was added using the dry process technique. Three rubber sizes were used with the following measurement: 0.15, 0.425, and 1.18mm. CR was added 2% of the weight of total aggregates. Bitumen80/100 penetration was used throughout the experiment. The effect of CR size on the mixture was investigated in terms of resilient modulus, indirect tensile strength (ITS), stability and dynamic creep. Experimental results revealed that the four engineering properties decreased when CR was added to HMA and when CR size was increased. However, the increasedCR size similarly increased the permanent deformation values. The data analysisshowed that 0.15mm CR is the most effective material for asphalt mixturebecause of the partial interaction between rubber particles and bitumen.

scholarly journals Laboratory Investigation of Aging Resistance for Rubberized Bitumen Modified by Using Microwave Activation Crumb Rubber and Different Modifiers

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4230
Author(s):  
Ben Zhang ◽  
Huaxin Chen ◽  
Honggang Zhang ◽  
Yongchang Wu ◽  
Dongliang Kuang ◽  
...  
Keyword(s):  
Fracture Energy ◽  
Elastic Recovery ◽  
Maximum Load ◽  
Crumb Rubber ◽  
Engineering Properties ◽  
Aging Condition ◽  
Short Term ◽  
Aging Resistance ◽  
Before And After

Different modification methods, such as adding modifiers and pretreating crumb rubber, have been developed to achieve decent engineering properties and reduce the viscosity of rubberized bitumen. This study evaluated the influence of the modification methods on the aging resistance for rubberized bitumen. Two types of crumb rubber—a 40-mesh crumb rubber and a microwave-pretreated crumb rubber—and two kinds of modifiers—Sasobit and Trans-polyoctenamer—were selected to prepare rubberized bitumen. The samples were subjected to a Thin-Film Oven Test for the simulation of the short-term aging condition, while a Pressure-Aging-Vessel test was used to simulate the long-term aging condition. The indexes of rubberized bitumen, including softening point, elastic recovery ratio, maximum load, ductility, fracture energy, phase angle, and dynamic modulus, were tested before and after aging. The result showed that trans-polyoctenamer displayed the best resistance to short-term aging, while Sasobit significantly improved the fracture energy of rubberized bitumen after short-term aging. Microwave pretreated partially destroyed the internal structure of crumb rubber, leading to a decrease of short-term aging resistance for rubberized bitumen. Compared with short-term aging, the changing trends of various indexes were basically same, except the discrepancy of properties indexes was reduced after long-term aging.

scholarly journals ENGINEERING PROPERTIES OF CONCRETE WITH SAND PARTIALLY SUBSTITUTED WITH CRUMB RUBBER

2018 ◽  
Author(s):  
ADEYEMI OLUWASEUN ADEBOJE ◽  
WILLIAMS KEHINDE KUPOLATI ◽  
EMMANUEL ROTIMI SADIKU ◽  
JULIUS MUSYOKA NDAMBUKI
Keyword(s):  
Crumb Rubber ◽  
Engineering Properties

scholarly journals Green Concrete from Sustainable Recycled Coarse Aggregates: Mechanical and Durability Properties

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Neeraj Jain ◽  
Mridul Garg ◽  
A. K. Minocha
Keyword(s):  
Physical And Mechanical Properties ◽  
Chloride Ions ◽  
Recycled Aggregate ◽  
Engineering Properties ◽  
Hardened Concrete ◽  
Green Concrete ◽  
Coarse Aggregates ◽  
Durability Properties ◽  
Natural Aggregates

Present investigations deal with the development of green concrete (M 30 grade) using recycled coarse aggregates for sustainable development. Characterization of recycled coarse aggregates showed that physical and mechanical properties are of inferior quality and improvement in properties was observed after washing due to removal of old weak mortar adhered on its surface. The influence of natural coarse aggregates replacement (50 and 100%) with recycled coarse aggregate on various mechanical and durability properties of hardened concrete were discussed and compared with controls at different w/c ratio. Improvements in all the engineering properties of hardened concrete were observed using washed recycled coarse aggregates. The compressive strength of 28-day hardened concrete containing 100% washed recycled aggregate was slightly lower (7%) than concrete prepared with natural aggregates. Water absorption, carbonation, and rapid chloride penetration test were conducted to assess the durability of the concrete. Concrete was found moderately permeable for chloride ions penetration and no carbonation was observed in all the concrete mixes studied.

Properties of Crumb Rubber Concrete

2005 ◽  
Vol 1914 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Kamil E. Kaloush ◽  
George B. Way ◽  
Han Zhu
Keyword(s):  
Laboratory Tests ◽  
Coefficient Of Thermal Expansion ◽  
Impact Resistance ◽  
Crumb Rubber ◽  
Engineering Properties ◽  
Unit Weight ◽  
Thermal Coefficient ◽  
Portland Cement Concrete ◽  
Crumb Rubber Concrete ◽  
Rubber Concrete

Crumb rubber is a material produced by shredding and commutating used tires. There is no doubt that the increasing piles of used tires create environmental concerns. The long-term goal of this research is to find means to dispose of the crumb rubber by placement of the rubber in portland cement concrete and still provide a final product with good engineering properties. The Arizona Department of Transportation and Arizona State University have initiated several crumb rubber concrete (CRC) test sections throughout Arizona over the past few years. Laboratory tests were conducted to support the knowledge learned in the field and enhance the understanding of the material properties of CRC. Concrete laboratory tests included compressive, flexural, indirect tensile strength, thermal coefficient of expansion, and microscopic matrix analyses. The unit weight and the compressive and flexural strengths decreased as the rubber content in the mix increased. Further investigative efforts determined that the entrapped air, which caused excessive reductions in compressive strength, could be reduced substantially by adding a deairing agent. The higher tensile strains at failure observed from the tests were indicative of more ductile, energy-absorbent mix behavior. The coefficient of thermal expansion test results indicated that CRC was more resistant to thermal changes. The CRC specimens tested remained intact after failure and did not shatter as a conventional mix did. Such behavior may be beneficial for a structure that requires good impact resistance properties. If no special considerations are made to maintain higher strength values, the use of CRC mixes in places where high-strength concrete is not required is recommended.

scholarly journals MICRONIZED CRUMB RUBBER INFLUENCE ON INDEX PROPERTIES OF WARM ASPHALT BINDERS

2021 ◽  
pp. 1-9
Author(s):  
Ahmad Batari ◽  
Saeed Modibbo ◽  
Balarabe Babangida ◽  
Isa Zubairu ◽  
Mohamad Aman
Keyword(s):  
Softening Point ◽  
Solid Waste Management ◽  
Mesh Size ◽  
Crumb Rubber ◽  
Engineering Properties ◽  
Asphalt Binders ◽  
Asphalt Cement ◽  
Penetration Index ◽  
High Penetration ◽  
Resistance To Deformation

Primarily, the main aim of recycling waste tires in the form of micronized crumb rubber into asphalt cement as modifiers are to enhance their engineering properties in addition to the associated solid waste management benefits. Often, these modifiers are used to achieve reasonably stiffer binders i.e.; low penetration; high softening point; and high penetration index, to realize higher resistance to deformation under the influence of traffic and temperature. The study assessed the effects of Micronized Crumb Rubber (MCR) on the penetration, softening point, and penetration index of 80-100 PEN bitumen impregnated with 2.5 % Sasobit (fixed by weight). The MCR modified warm asphalt binders were prepared by further blending with different percentages of minus 40 mesh size MCR powder (from0 – 15 % by weight of the bitumen stepped at 2.5%). Subsequently, penetration and softening point tests were conducted on each blend, and the corresponding penetration indices were evaluated. The results show that MCR addition gradually decreases the penetration values while conversely increases both the softening point values and the penetration indices as well. Thus, MCR might be used to improve the flow and thermal susceptibility resistance of warm asphalt binders

Sign in / Sign up

Export Citation Format

Share Document