Combined effects of treated domestic wastewater, fly ash, and calcium nitrite toward concrete sustainability

Abushanab, Abdelrahman; Alnahhal, Wael

doi:10.1016/j.jobe.2021.103240

Cited by 26 publications

(60 citation statements)

References 55 publications

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“…The delay in setting time, which means the increase in time during which concrete can be transported, placed, and finished, obtained in this study, may be interesting in hot weather concreting applications. The obtained results of setting time in this study using saline-TWW are consistent with the results of Asadollahfardi et al [19] and Abushanab and Alnahhal [35]. It could also be noticed from Fig.…”

Section: Setting Time and Workabilitysupporting

confidence: 92%

“…It was found that the slump values for the four types of concrete mixes varied between 75 and 78 mm, indicating that the use of saline-TWW as a replacement of DW has no remarkable effect on the slump value of the fresh concrete. The results of Al-Gussain and Terro [17], Asadollahfardi et al [19], and Abushanab and Alnahhal [35] also indicated that TWW has only a negligible effect on concrete workability.…”

Section: Setting Time and Workabilitymentioning

confidence: 99%

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Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Dehane

Kriker

Salhi

2023

Period. Polytech. Civil Eng.

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The rapidly growing world population and the accompanying increase in concrete production to meet building and infrastructure needs have led to significant increase in potable water consumption, which resulted in several environmental problems. This paper investigates the feasibility of replacing potable water with highly mineralized treated wastewater in concrete mixing in order to make concrete production more eco-friendly in an arid region. Concrete specimens were prepared using saline treated wastewater (saline-TWW) as mixing water and compared to those mixed with distilled water (DW) and with the performance requirements given by the mixing water quality standards. The results revealed that the concrete mixes produced using saline-TWW exhibited higher early strength and a similar long-term strength than the control mix produced using DW. It was also found that the use of saline-TWW increased the setting times of cement paste but had no remarkable effect on the workability of fresh concrete mixture. Furthermore, the microstructural characteristics of the hardened concrete were assessed by water-permeability test, SEM image analysis, and X-ray diffraction tests. The results revealed that saline-TWW concrete exhibited a more compact microstructure and smaller pore sizes than their counterparts of DW, which means an improvement in the durability of saline-TWW concrete. Moreover, an electrochemical test was conducted to estimate the extent of corrosion of the steel embedded in reinforced mortar specimens prepared using saline-TWW and DW. The electrochemical test results showed that the use of 100% saline-TWW as mixing water of concrete resulted in a high corrosion rate of the embedded steel.

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Section: Setting Time and Workabilitysupporting

confidence: 92%

Section: Setting Time and Workabilitymentioning

confidence: 99%

Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Dehane

Kriker

Salhi

2023

Period. Polytech. Civil Eng.

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“…Based on the ACI 211.1‐91, 41 and ASTM C191‐19, 42 all the samples have the minimum initial and final setting time and their maximum final setting times comply with the notes. Besides, according to ACI 211.1‐91, 41 the difference in setting time when wastewater was used over fresh water, which must be less than 25%, is in line with this note in all samples, excluding the final setting time of samples manufactured with domestic wastewater, 59 PatanKhasim Charitable Trust wastewater, 61 and treated domestic wastewater in combination with fly ash, and calcium nitrate 68 . Figure 1 shows a summary of the setting time results for different kinds of wastewater in concrete manufacturing.…”

Section: The Effect Of Domestic and Industrial Wastewater On Concrete...mentioning

confidence: 56%

“…Setting time of manufactured concrete samples with freshwater (W), and treated wastewater (WW); adapted from References 59–61,68–70). …”

Section: The Effect Of Domestic and Industrial Wastewater On Concrete...mentioning

confidence: 99%

Concrete production with domestic and industrial wastewaters—A literature review

Hassani

Matos

Zhang

et al. 2023

Structural Concrete

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With water scarcity posing an ever‐present worldwide crisis, treated wastewater usage as an alternative to fresh water could be a smart choice and contribute to a sustainable construction industry. Numerous studies have been conducted by using treated domestic or industrial wastewater in concrete production, providing a promising solution to the global water shortage and wastewater management. However, the effectiveness of wastewater on the concrete manufacturing in comparison to pure freshwater has been a concern due to its impurities and contaminants. The results derived from previously published studies on concrete manufacturing with wastewater vary as a consequence of considerate different additives, curing age, treatment method, or wastewater quality. This review compiles and compares the previous investigations on physical and mechanical properties, durability characteristics, and morphological assessments of manufactured concrete with treated wastewater, and discusses the reasons for similarities and differences. Research findings and conclusions from the literature are summarized, and future research directions based on the research gaps are also recommended.

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“…As desert sand is unsuitable as a building material [5], it has to be mined or dredged from rivers, deltas, and marine and coastal ecosystems, causing environmental damage [6]. At present, the Chinese government's Department of Natural Resources is paying increasing attention to water and soil protection around rivers, and the exploitation and use of natural river sand are subject to many restrictions [7,8]. Artificial sand, creating by crushing stone aggregate, is gradually re-placing natural river sand in the production of concrete [9,10].…”

Section: Introductionmentioning

confidence: 99%

The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

Tchekwagep

Zengyao

Yang

et al. 2022

Materials Science-Poland

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Due to the depletion of natural sand resources, it is urgent to develop synthetic sand that will replace the natural one in the production of concrete. In this study, we carried out descriptive inspection of mortar working performance, mechanical properties and internal cracking under three different application schemes of fine aggregate, including natural, artificial, and basalt sand. Tests showed that the mortar with river sand had more internal cracking and lowest strength as the temperature rises. The artificial and basalt sand had better resistance and less internal cracking than river sand at high temperature. The compressive strength of basalt sand mortar (BSM) was slightly higher than that of artificial sand mortar (ASM), while the compressive strength value of river sand mortar (RSM) was the lowest at room temperature. However, when heated to 100°C, the RSM had 48% loss of strength, followed by the BSM at 45.4% and ASM at 11.6%. Above 100°C, none of the mortar samples meet the requirement of the calcium sulfoaluminate cement 42.5. The average atomic ratios (Ca/Si, Ca/Al, and Ca/Si) for the ASM and BSM increased with the rise in temperature. XRD showed that above 100°C, the diffraction peaks of Ettringite (AFt) disappeared, the number of CaSO4 diffraction peaks decreased significantly, the intensity decreased, and a diffraction peak of CaCO3 appeared.

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Combined effects of treated domestic wastewater, fly ash, and calcium nitrite toward concrete sustainability

Cited by 26 publications

References 55 publications

Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Influence of Saline-treated Wastewater on Properties of Concrete: An Experimental Study

Concrete production with domestic and industrial wastewaters—A literature review

The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

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