Effect of temperature curing on lightweight expanded clay aggregate concrete

Sravya, Y. Lakshmi; Manoj, Tangudu; Rao, M V Seshagiri

doi:10.1016/j.matpr.2020.10.568

Cited by 5 publications

(7 citation statements)

References 2 publications

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“…At 10% replacement, the concrete attained a flexural strength of approximately 5.1 MPa, higher than the control mix and other replacement levels. This sug- gests that a moderate incorporation of LECA can enhance the flexural strength of concrete [2,4,15,16]. At lower replacement levels of 5% and 10%, the flexural strength remains relatively high and comparable to the control mix, indicating that LECA contributes positively to the structural integrity of concrete when used in small amounts.…”

Section: Flexural Strength Testmentioning

confidence: 98%

“…This suggests that higher-grade concretes, likely due to their denser and more refined matrix, exhibit improved resistance to water penetration compared to lower grades. Moreover, when comparing self-compacting concrete (SCC) with lightweight self-compacting concrete (LWSCC), it was found that SCC exhibits significantly lower water absorption rates, indicating better performance in density and impermeability [1,3,15,16]. The document further details the compressive strength of concrete using light-expanded clay aggregate, presenting results for five different replacement ratios in Figure 4.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…The highest Split Tensile Strength Test achieved at LECA 10 replacement is optimum replacement and strength, as shown in Figure 6. On the other hand, the decrease in split tensile strength observed for higher LECA replacement percentages, such as 20% and 25%, could be attributed to the increase in porosity and reduced interfacial bond strength between the aggregate and the matrix [2,4,[15][16][17]. The lightweight nature of LECA can lead to increased voids and reduced cohesion, resulting in lower tensile strength values.…”

Section: Split Tensile Strength Testmentioning

confidence: 99%

“…[15], The steel fibers included in fractions of 0.0%, 0.50%, and 1.0% improved strength and "unit weight of lightweight concrete" as the steel fiber concentration rose. Lightweight aggregates have been used in place of stable aggregates [16]. The ratio of Lightweight aggregate increased, and Concrete's density and compressive strength dropped.…”

Section: Introductionmentioning

confidence: 99%

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Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Ningampalli,

Rao,

Desai

2024

Journal of Sustainable Construction Materials and Technologies

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In the current research, an attempt was made to examine the flexural and cracking behavior of reinforced lightweight self-compacting concrete (LWSCC) beams incorporating light-expand- ed clay aggregate (LECA) as a partial replacement for natural coarse aggregate (NCA). Me- chanical properties such as compressive strength, split tensile strength, and flexural strength were evaluated, alongside fresh properties assessed using flow table, V-funnel, J-ring, and L-box tests. The study examined six beams, including a control mix, with LECA replacements of 5%, 10%, 15%, 20%, and 25%. The results indicate that compressive strength decreased with higher LECA content, from 44.56 MPa in the control mix to 32.73 MPa at 25% LECA. Flexural and split tensile strengths showed similar trends. Crack width increased with LECA content, from 1 mm in the control mix to 2 mm at 25% LECA, while density decreased. Flexur- al performance analysis revealed reduced ultimate load capacity and increased deflection with higher LECA proportions. The ductility index improved, suggesting enhanced flexibility. This study concludes that LECA can effectively replace NCA in LWSCC, though with a trade-off in strength and cracking behavior.

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Section: Flexural Strength Testmentioning

confidence: 98%

Section: Compressive Strengthmentioning

confidence: 99%

Section: Split Tensile Strength Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Ningampalli,

Rao,

Desai

2024

Journal of Sustainable Construction Materials and Technologies

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“…Considerable research has been conducted to determine the optimal bloating zones, mechanisms, and the feasibility of various clays to undergo bloating [4][5][6][7][8][9][10]. However, the mix design of LWAs with expanded clay is still to be explored.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Expanded Clay Aggregate Lightweight Concrete for Nonstructural Applications

Khan,

Hussain,

Khushnood

et al. 2024

Advances in Civil Engineering

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In nonstructural infill panels, common materials like expanded polystyrene panels face fire susceptibility, autoclaved aerated concrete (AAC) incurs high production costs, and traditional bricks come with a significant carbon footprint and weight. So, there is a requirement for infill panels that are not just resilient and lightweight but sustainable as well. This study seeks to address these issues by introducing sustainable and lightweight expanded clay aggregate (ECA) in concrete. Firstly, eight ECA mix designs were prepared by integrating fly ash and kerosene with clay, and ECA with a bulk density of 0.59 g/cm³ and compressive strength of up to 1.73 MPa were prepared. The lightest ECA mix was then chosen to explore their use in lightweight aggregate concrete (LWAC) along with fly ash as a secondary cementitious material. The resulting LWAC had a minimum density of 1,050 kg/m³ and a compressive strength of 6.8 MPa, fulfilling the standard requirements of a minimum of 3.5 MPa for nonstructural concrete.

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Influence of Lightweight Aggregates and Supplementary Cementitious Materials on the Properties of Lightweight Aggregate Concretes

Kumar

Srivastava

2022

Iran J Sci Technol Trans Civ Eng

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Effect of temperature curing on lightweight expanded clay aggregate concrete

Cited by 5 publications

References 2 publications

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Feasibility Study of Expanded Clay Aggregate Lightweight Concrete for Nonstructural Applications

Influence of Lightweight Aggregates and Supplementary Cementitious Materials on the Properties of Lightweight Aggregate Concretes

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