Development of sustainable concrete using recycled coarse aggregate and ground granulated blast furnace slag

Majhi, Rajib K.; Nayak, Amar Nath; Mukharjee, Bibhuti Bhusan

doi:10.1016/j.conbuildmat.2017.10.118

Cited by 148 publications

(41 citation statements)

References 50 publications

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“…The trend of increasing the compressive strength with an increase in GGBS replacement ratio up to an optimum replacement ratio includes concrete made consistent with studies that use non-recycled aggregates or mixing water. Majhi et al [13] prepared and tested concrete mixes that use recycled aggregates and reported a decrease in compressive strength with an increase in GGBS replacement ratios from 10% to 60%. Dinakar et al [14] developed a mix design method for SCC in which GGBS is used to replace OPC with percentages ranging from 20% to 80%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Mohamed

2019

Sustainability

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The production of cement requires significant energy and is responsible for more than 5% of global CO2 emissions; therefore it is imperative to reduce the production and use of ordinary portland cement (OPC). This paper examines the compressive strength development of low water-to-binder (w/b) ratio self-consolidating concrete (SCC) in which 90% of the cement is replaced with industrial by-products including ground granulated blast furnace slag (GGBS), fly ash, and silica fume. The emphasis in this paper is on replacing a large volume of cement with GGBS, which represented 10% to 77.5% of the cement replaced. Fresh properties at w/b ratio of 0.27 were examined by estimating the visual stability index (VSI) and t50 time. The compressive strength was determined after 3, 7, 28, and 56 days of curing. The control mix made with 100% OPC developed compressive strength ranging from 55 MPa after three days of curing to 76.75 MPa after 56 days of curing. On average, sustainable SCC containing 10% OPC developed strength ranging from 31 MPa after three days of curing to 56.4 MPa after 56 days of curing. However, the relative percentages of fly ash, silica fume, and GGBS in the 90% binder affect the strength developed as well. In addition, this paper reports the effect of the curing method on the 28 day compressive strength of environmentally friendly SCC in which 90% of the cement is replaced by GGBS, silica fume, and fly ash. The highest compressive strength was achieved in samples that were cured for three days under water, then left to air-dry for 25 days, compared to samples cured using chemical compounds or samples continuously cured under water for 28 days. The study confirms that SCC with 10% OPC and 90% supplementary cementitious composites (GGBS, silica fume, fly ash) can achieve compressive strength sufficient for many practical applications by incorporating high amounts of GGBS. In addition, air-curing of samples in a relatively high temperature (after three days of water curing) produce a higher 28 day compressive strength compared to water curing for 28 days, or membrane curing.

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Section: Introductionmentioning

confidence: 99%

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Mohamed

2019

Sustainability

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“…Compressive and tensile strengths were seen to be improved when the replacement level of fine aggregates for GGBFS did not exceed 60% [75]. However, using GGBFS with RCA in one mixture decreased the mechanical properties of concrete compared to a controlled sample, while the optimum substitution content was recommended around 40% of GGBFS and 50% of RCA to guarantee less than 5% reduction in the mechanical properties [157]. The concept of mixing two materials, i.e., ternary systems, is explicitly addressed in the following section.…”

Section: Ground Granular Blast-furnace Slag (Ggbfs)mentioning

confidence: 94%

“…More importantly, a reduction of CO 2 emissions was achievable in the reviewed researches for GGBFS with RHA [213]. RCA was also investigated with the presence of GGBFS, and it was concluded that the workability of concrete increased [157], while the mechanical properties (compressive strength, flexure, and split tensile strength) decreased. However, this ternary mixture met the minimum requirements for serviceability [157,214].…”

Section: Materials Forming Ternary Systems For Concretementioning

confidence: 97%

Green Concrete: By-Products Utilization and Advanced Approaches

et al. 2019

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The popularity of concrete has been accompanied with dreadful consumptions that have led to huge carbon footprint in our environment. The exhaustion of natural resources is not yet the problem, but also the energy that is needed for the fabrication of the natural materials, in which this process releases significant amount of carbon dioxide (CO2) emissions into the air. Ordinary Portland Cement (OPC) and natural aggregates, which are the key constituents of concrete, are suggested to be recycled or substituted in order to address the sustainability concern. Here, by-products have been targeted to reduce the carbon footprint, including, but not limited to, fly ash, rice husk ash, silica fume, recycled coarse aggregates, ground granular blast-furnace slag, waste glass, and plastic. Moreover, advanced approaches with an emphasis on sustainability are highlighted, which include the enhancement of the hydration process in cement (calcium-silicate hydrate) and the development of new materials that can be used in concrete (e.g. carbon nanotube). This review paper provides a comprehensive discussion upon the utilization of the reviewed materials, as well as the challenges and the knowledge gaps in producing green and sustainable concrete.

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“…Hao WANG, 1) Ziwei CHEN, 1) Lili LIU, 1) Yongqi SUN 2) * and Xidong WANG 1) May 25, 2018) In this research, the effect of P 2 O 5 additions on the viscosity of CaO-SiO 2 -Al 2 O 3 -Na 2 O-P 2 O 5 melts was clarified using rotating cylinder method. In addition, the role of P 2 O 5 on the microstructure of these melts was investigated by Raman, Fourier Transformation Infrared (FTIR) and Magic Angular Spinning Nuclear Magnetic Resonance (MAS NMR) spectroscopic techniques.…”

Section: Roles Of P 2 O 5 Addition On the Viscosity And Structure Of mentioning

confidence: 99%

“…Nowadays, as the energy and chemical industries have been developing rapidly all over the world, a huge volume of industrial wastes are produced, such as blast furnace slags, fly ash, tailings, and so on. [1][2][3][4][5] These industrial wastes not properly handled will cause serious environmental problems, including water and land pollution and air contamination. Thus, lots of researchers investigated the utilization of these industrial wastes, such as recycling of blast furnace slag in cement, glass fiber, concrete aggregate, tailing and utilization of fly ash in the building materials.…”

Section: Introductionmentioning

confidence: 99%

Roles of P2O5 Addition on the Viscosity and Structure of CaO–SiO2–Al2O3–Na2O–P2O5 Melts

et al. 2018

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Development of sustainable concrete using recycled coarse aggregate and ground granulated blast furnace slag

Cited by 148 publications

References 50 publications

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Green Concrete: By-Products Utilization and Advanced Approaches

Roles of P<sub>2</sub>O<sub>5</sub> Addition on the Viscosity and Structure of CaO–SiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>–Na<sub>2</sub>O–P<sub>2</sub>O<sub>5</sub> Melts

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