Developing biotechnological technique for reuse of wastewater and steel slag in bio-concrete

Saxena, Shekhar; Tembhurkar, A. R.

doi:10.1016/j.jclepro.2019.04.363

Cited by 58 publications

(23 citation statements)

References 37 publications

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“…Since the chemical composition of WW is different from that of tap water, reactions and more gas bubbles may be generated. Based on the studies of Saxena and Tembhurkar [24,27], Asadollahfardi and Mahdavi [31] and Yahyaei et al [32], the air content of concrete increases (2-34%) with the use of WW, unless it has been treated.…”

Section: Air Contentmentioning

confidence: 99%

“…Compressive strength is one of the most important properties of concrete that is widely used for the design of concrete structures. The effect of treated WW content on the compressive strength of concrete, according to various studies [9,12,13,15,[20][21][22]27,28,30,31,33,[35][36][37][38], is shown in Figure 7. Tay and Yip [19,37] studied the compressive strength of concrete with different contents of treated WW and reported insignificant changes with varying WW percentage.…”

Section: Effect Of Treated Wwmentioning

confidence: 99%

“…It was hypothesized that polyvinyl acetate WW improved the density due to the lubrication effect of polymer particles that caused an improvement in compressive strength. Saxena and Tembhurkar et al [27] reported that concrete made with WW mixed with bacterial solutions (Bacillus cereus) can yield 20% higher compressive strength than concrete made with conventional potable water. The main reason for this behaviour was the formation of CaCO 3 by bacterial filling the voids.…”

Section: Effect Of Various Types Of Wastewaters On Compressive Strengthmentioning

confidence: 99%

“…Figure 19 shows the relative chloride ion penetrability (based on the charge passed, in Coulomb) of concrete made with treated [15,27,28,38] and untreated [16,24] WW. The results show that chloride ion penetration increases by increasing the incorporation ratio of untreated WW (up to 33%).…”

Section: Chloride Penetrationmentioning

confidence: 99%

See 3 more Smart Citations

A Review on the Performance of Concrete Containing Non-Potable Water

Ali

Brito

et al. 2021

Applied Sciences

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Construction industries consume huge amounts of potable water during activities such as washing of aggregates, stone crushing, manufacturing, and curing of concrete, mortars, grouts, and wetting of masonry bricks. It is also responsible for wastewater generated during the finishing and cleaning of buildings and construction equipment. Therefore, the water-footprint of construction industry cannot be ignored to reach the state-of-the art sustainability. This study reviewed the technical properties of construction materials made with non-potable water (NPW), i.e., domestic and industrial sewage. The study identified the positive and negative effects of non-potable water on the fresh- and hardened-state properties of concrete. This study also identified the gaps in the literature that can be analysed in order to produce reliable information related to the use of different types of NPW on the properties of concrete.

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Section: Air Contentmentioning

confidence: 99%

Section: Effect Of Treated Wwmentioning

confidence: 99%

Section: Effect Of Various Types Of Wastewaters On Compressive Strengthmentioning

confidence: 99%

Section: Chloride Penetrationmentioning

confidence: 99%

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A Review on the Performance of Concrete Containing Non-Potable Water

Ali

Brito

et al. 2021

Applied Sciences

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“…Unlike steel furnace slag, blast furnace slag has been successively used in construction industry. In the current practice, the utilization of steel slag is primarily done as filling material in construction of roads [3,4] or as partial replacement of coarse aggregates [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Approach for Linz‐Donawitz Slag Waste as a Replacement of Cement in Concrete: Mechanical, Microstructural, and Durability Properties

Palod

Deo

Ramtekkar

2020

Advances in Civil Engineering

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Linz-Donawitz (LD) slag, solid waste produced during steel manufacture in basic oxygen furnace, is difficult when it comes to handling and disposal and has very limited utilization. To increase its reusability, the suitability of supplanting cement with LD slag in concrete was examined. To study the impact of partially replacing cement with LD slag on strength, microstructure, and durability of concrete, more than 150 samples were cast. The test results reveal that the highest compressive and flexural strengths were attained at 20% LD slag replacement and, beyond that, the strength decreased. The hydration products detected by X-ray Diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) were calcium silicate hydrate (C-S-H), ettringite, and calcium aluminosilicate hydrate (C-A-S-H). The scanning electron microscope (SEM) images of binary cement concrete showed denser microstructure and lesser voids. The sulphuric acid resistance, electrical resistivity, and carbonation resistance tests done reveal that acceptable durability could be achieved when cement is replaced by LD slag. It is deduced that LD slag can be utilized in partially replacing cement to achieve the desired strength. This research gives another comprehension of simultaneously managing steel industry waste for sustainable development and contributing added advantages to the economy.

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Making concrete blocks by raw leachate and construction and demolition waste

Esmaeili

Heidarzadeh

2021

Remediation Journal

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Research was performed to determine if a viable concrete product can be produced using waste streams accumulating in landfills. The lack of recycling and reuse of construction and demolition (C&D), despite technical, economic, and environmental justifications, has led to the accumulation of C&D waste in landfills throughout Iran.Another issue with landfills in Iran is the existence of pools of municipal solid waste leachate, which has caused problems due to lack of treatment. In this study, by simultaneously utilizing raw municipal leachate and C&D waste in the concrete production process, an attempt was made to produce concrete that is environmentally sustainable and can be used in civil works. After crushing, the C&D waste was granulated into different sizes, its coarse aggregate was completely replaced, and 70% of its fine aggregate was replaced with natural aggregate to form concrete samples that were then made using different percentages of leachate. The utilization of the leachate and C&D waste for concrete production doubled the concrete slump and reduced the unconfined compressive strength of 7-and 28-day curing time by 9 and 15.7 MPa, respectively, when compared to concrete produced with natural aggregates. A leaching procedure test showed that samples made using leachate and recycled C&D waste did not result in high concentrations of leachable heavy metals. Therefore, the study showed that low leachate percentages and recycled C&D wastes can be used in projects where high-strength concrete is not necessary.

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Developing biotechnological technique for reuse of wastewater and steel slag in bio-concrete

Cited by 58 publications

References 37 publications

A Review on the Performance of Concrete Containing Non-Potable Water

A Review on the Performance of Concrete Containing Non-Potable Water

Sustainable Approach for Linz‐Donawitz Slag Waste as a Replacement of Cement in Concrete: Mechanical, Microstructural, and Durability Properties

Making concrete blocks by raw leachate and construction and demolition waste

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