Durability properties of multiple-blended binder concretes incorporating thermally activated alum sludge ash

Owaid, Haider M.; Hamid, Roszilah; Taha, Mohd Raihan

doi:10.1016/j.conbuildmat.2018.12.149

Cited by 34 publications

(9 citation statements)

References 29 publications

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“…However, treated alum sludge (TAS) possesses high contents of SiO 2 and Al 2 O 3 , which are the fundamental constituents of cement. So, the feasibility of reusing AS, as a pozzolanic material, with Portland cement (PC) due to their capacity for reacting with calcium hydroxide formed during the hydration of PC has gained interest among concrete researchers [4]. Recently, few studies have investigated the feasibility of using calcined water treatment sludge (WTS) as supplementary cementitious material in cement-based materials due to high pozzolanic activity and evaluated its influence on the mechanical properties of cement.…”

Section: Introductionmentioning

confidence: 99%

Utilization of alum sludge waste for production of eco-friendly blended cement

Mohamed

El-Gamal

Farghali

2022

J Mater Cycles Waste Manag

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This work was focused on evaluating the suitability of replacing Portland cement (PC) by 5, 10 and 15 mass % of activated alum sludge waste (AAS) as a pozzolanic material. Exploitation of low-cost nanocomposite for bolstering the physical, mechanical, and stability against firing of PC–AAS-hardened composites was inspected. CuFe2O4 spinel nanoparticle with average particle size (~ 50 nm) was prepared. Inclusion of CuFe2O4 spinel in different PC–AAS-hardened composites bolsters their physicomechanical features at almost normal curing ages as well as their stability against firing. The positive impact of synthesized CuFe2O4 spinel was affirmed via TGA/DTG and XRD techniques, which indicated the presence of diverse hydration yields such as CSHs, CASHs, CFSH, and CuSH that enhance the overall physicomechanical characteristics and thermal stability of various PC–AAS-hardened composites. The composite containing (90 PC–10 AAS waste–2 CuFe2O4) offers many benefits from the economic and environmental view. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Utilization of alum sludge waste for production of eco-friendly blended cement

Mohamed

El-Gamal

Farghali

2022

J Mater Cycles Waste Manag

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“…In view of the aforementioned problems in dealing with AWTS, a few studies have attempted to valorize it in building and construction materials. AWTS has been considered for use as an SCM in concrete [4][5][6][7], in manufacturing aggregates [8][9][10] and in the production of cement [11]. Rodriguez et al [12] reported that the substitution of 10-30% of cement with spray-dried water treatment sludge led to a significant reduction in compressive strength, with 28-day strengths reduced by 50-70%.…”

Section: Introductionmentioning

confidence: 99%

Reuse of UK alum water treatment sludge in cement-based materials

Shamaki

Adu-Amankwah

Black

2021

Construction and Building Materials

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“…In this study, the Schmidt rebound hammer was used as a nondestructive test to measure and predict the strength of concrete samples with and without industrial waste material as a replacement for fine aggregate. However, some past studies employed different industrial waste as replacement material to improve the performance of concrete structures [27][28][29]. Durability properties of concrete utilizing alum sludge as a replacement for cement were studied by Breesem et al [30].…”

Section: Introductionmentioning

confidence: 99%

Nondestructive Determination of Strength of Concrete Incorporating Industrial Wastes as Partial Replacement for Fine Aggregate

Odimegwu

Kaish

Zakaria

et al. 2021

Sensors

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Schmidt rebound hammer test was employed in this study as a nondestructive test. This test method has been universally utilized due to its non-destructiveness for quick and easy assessment of material strength properties and quality of concrete of an existing structure. Industrial waste materials (air-dried alum sludge, treated alum sludge, limestone dust and quarry dust) were employed as replacement material for fine aggregates in this study. A normal strength concrete was designed to achieve 35 MPa at 28 days, with industrial waste materials replacing fine aggregate at different percentages (0%, 5%, 10% and 15%), and then cured for 7, 28 and 180 days. The compressive strength values and rebound numbers for all the mixes obtained were correlated, and a regression equation was established between compressive strength and Schmidt rebound number. The correlation result showed an excellent relationship between rebound number and compressive strength of concrete produced in this study at all curing ages, with correlation coefficients of R2 = 0.98, R2 = 0.99 and R2 = 0.98. The predicted equation showed a strong relationship with the experimental compressive strength. Therefore, it can be used for the prediction of compressive strength of concrete with industrial waste as a replacement for fine aggregate.

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Durability properties of multiple-blended binder concretes incorporating thermally activated alum sludge ash

Cited by 34 publications

References 29 publications

Utilization of alum sludge waste for production of eco-friendly blended cement

Utilization of alum sludge waste for production of eco-friendly blended cement

Reuse of UK alum water treatment sludge in cement-based materials

Nondestructive Determination of Strength of Concrete Incorporating Industrial Wastes as Partial Replacement for Fine Aggregate

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