Effect of alum sludge on concrete strength and two way shear capacity of flat slabs

Ahmed, Faris R.; Muhammad, Muhammad A.; Ibrahim, Rahel K.

doi:10.1016/j.istruc.2022.04.086

Cited by 9 publications

(4 citation statements)

References 18 publications

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“…Several material properties and geometric parameters govern the two-way shear capacity, including the compressive strength of concrete. 17 Figure 10 shows the average shear strength of the tested slabs corresponding to the percent of EPS content. The shear strengths is reduced with increasing EPS content compared to the slabs with the control mixture.…”

Section: Effect Of Eps On Shear Strengthmentioning

confidence: 99%

“…Many studies work on comparing experimental loads with the internationals codes. 8,17–20 The two-way shear for the slabs without shear reinforcement is computed according to Eurocode 2 (BS EN 1992-1-1:2004, clause 6.4). 26 According to Eurocode 2, the control perimeter is modeled as a rectangular geometry with a distance of (2.0 d) from the column periphery.…”

Section: Prediction Of Shear Capacity By Some International Codesmentioning

confidence: 99%

“…The same procedure for measuring (A Exp ) was used in previous works. [17][18][19][20] The area ranged between about 66k mm 2 for EPS-00 to 115k mm 2 for EPS-40 for 50 3 50 column, and ranged between about 69k mm 2 for EPS-00 to 120k mm 2 for EPS-40 for 50 3 75 column. It has been shown that the larger EPS content, the higher punching cone base area.…”

Section: Experimental Two Way Shear Strengthmentioning

confidence: 99%

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Punching shear capacity of expanded polystyrene (EPS) lightweight concrete flat slabs without shear reinforcement

Rashied Ahmed

2023

Advances in Mechanical Engineering

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This work presents an experimental and theoretical study on the punching shear behavior of Lightweight Concrete Slabs. Lightweight obtained using Expanded polystyrene (EPS) beads as partial coarse aggregate’s replacement, without adding supplementary bonding additives, to reduce concrete density from 2400 to 1800 kg/m3. The EPS content, concrete strength and column aspect ratio were test parameters. Five groups of concrete prepared by partially replacing natural coarse aggregate with 0%, 10%, 20%, 30% and 40% (by volume) of EPS balls. Ten reinforced concrete slabs without shear reinforcement with a monolithic column were tested under concentric loading. The study aimed to examine the effect of the EPS on the density and compressive strength of concrete and eventually on the flat slabs punching capacity. Five series of mixtures identified and compared with conventional normal weight concrete. Results showed that with increasing EPS content, rate of reduction in concrete strength is faster than the reduction in concrete density. Also, showed that the failure base area increased while the concrete density decreased, this yielded a higher punching capacity compared to rate of decrease in the concrete strength. International standards models showed overestimation of punching shear capacity and didnot reflect the reduced concrete strength action of lightweight concrete.

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Section: Effect Of Eps On Shear Strengthmentioning

confidence: 99%

Section: Prediction Of Shear Capacity By Some International Codesmentioning

confidence: 99%

Section: Experimental Two Way Shear Strengthmentioning

confidence: 99%

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Punching shear capacity of expanded polystyrene (EPS) lightweight concrete flat slabs without shear reinforcement

Rashied Ahmed

2023

Advances in Mechanical Engineering

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“…Chemical composition of WTS (Data from: Ahmed et al[26], Abo-El-Enein et al[27], Shamaki et al[28], Altheman et al[29], He et al[30] and Liu et al[31]). …”

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confidence: 99%

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Mattoso,

Cunha,

Aguiar

et al. 2024

Materials

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To address the growing global water demand, it is imperative to implement advanced treatment systems and sustainable alternatives for managing the large amount of waste generated during the water purification process, known as water treatment sludge (WTS). Worldwide, researchers and companies are exploring alternatives and methods for the valorization of WTS as a raw material in other processes. It is urgent that all productive sectors, which contribute significantly to greenhouse gas emissions, adopt this management principle to ensure more sustainable production, contributing to the global goal of climate neutrality. Notably, in civil construction, incorporating WTS as a supplementary cementitious material (SCM) shows great promise, considering that the industrial waste currently used for this purpose is increasingly restricted. The use of WTS as a raw material in the cement industry not only contributes to the reduction of the carbon footprint, but also reduces the high waste load still disposed of in landfills. The emerging applications for WTP sludge are reviewed, with emphasis on its valorization in the civil construction as an SCM. The main characteristics of this waste and their impacts on the environment are also addressed.

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Performance of Recycled Aggregate Concrete Incorporating Copper Slag at Elevated Temperature

Sahu,

Kumar,

Srivastava

et al. 2024

Iran J Sci Technol Trans Civ Eng

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Effect of alum sludge on concrete strength and two way shear capacity of flat slabs

Cited by 9 publications

References 18 publications

Punching shear capacity of expanded polystyrene (EPS) lightweight concrete flat slabs without shear reinforcement

Punching shear capacity of expanded polystyrene (EPS) lightweight concrete flat slabs without shear reinforcement

Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review

Performance of Recycled Aggregate Concrete Incorporating Copper Slag at Elevated Temperature

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