Compressive Strength of Concrete Using Lightweight Brick Waste as the Substitute for Fine Aggregate

Martina, Nunung

doi:10.21660/2022.98.3565

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Conventional concretes are characterised by their high density, so the concrete industry has undertaken the development of numerous methodologies to minimise the density and at the same time achieve acceptable characteristics [1]. One of the techniques employed involves the replacement of conventional natural aggregates with lightweight aggregate, thereby yielding numerous advantages, including enhanced thermo-insulation properties and decreased density of the produced concrete [2][3][4][5]. Lightweight expanded clay aggregate (LECA) is one type of artificial lightweight aggregate that has gained popularity in civil engineering applications due to its widespread use.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Sustainable Fibrous Lightweight Leca-Based Concrete With Fine Recycled Aggregates

Nahhab

2024

GEOMATE

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The world is moving towards the use of sustainable concrete due to its ability to reduce environmental pollution caused by the presence of waste arising from the demolishing of old buildings or those collapsed as a consequence of earthquakes. The combined effects of fine recycled concrete aggregate (RF), light expanded clay coarse aggregate (LECA), and steel fibres (SF) on the properties of concrete were investigated in the present study. The evaluated properties were slump test, compressive strength, flexural strength, splitting tensile strength, density, and water absorption. The prepared concrete specimens were also evaluated, considering non-destructive tests through ultrasonic pulse velocity and rebound hammer tests. Findings indicated that the inclusion of RF with LECA as a partial and full replacement of gravel in both fibrous and non-fibrous concrete resulted in a drop in compressive, splitting, and flexural strength by an average of 17%, 22%, and 25%, respectively when 50% LECA was used. Furthermore, when 100% LECA was used, the drop became more pronounced, with decreases of 39%, 42%, and 45%, respectively. However, the use of hooked steel fibre at 0.75% compensated for this adverseness, and the strengths of the mixes were generally higher than those of the reference mix, which was produced with normal-weight aggregates.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Sustainable Fibrous Lightweight Leca-Based Concrete With Fine Recycled Aggregates

Nahhab

2024

GEOMATE

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“…This has underscored the necessity for innovative wall materials that can offer improved safety standards. Lightweight concrete bricks have been explored as an alternative, although they often require additional finishing processes like trimming, plastering, and painting to achieve a polished building structure [2].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength and Water Absorption Capacity on Brick Interlock with Fly Ash Addition

Mobiliu,

Mursalin,

Jahja

et al. 2024

CERiMRE

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Interlock brick is an environmentally friendly substitute for house wall materials because the manufacturing process is not burned like red brick. This method of installing interlocking walls, like Lego, can function as a structure for sluice gates, columns and ring beams without the need for plastering or painting, so it is more effective and efficient and can reduce cement consumption. Several actions must be taken to minimize the use of cement by using environmentally friendly materials. One of the environmentally friendly materials that will be researched is Interlock bricks made from a mixture of Fly Ash . This research aims to determine the compressive strength and water absorption capacity of Interlock bricks mixed with Fly Ash. The research method begins by looking for interlock brick parameter data in the form of compressive strength and water absorption capacity. Compressive strength is a parameter of the mechanical suitability of interlock bricks , while water absorption is the ability of a material to absorb water. There are 3 variations of the mixture, namely with the ratio Fly Ash : Sand: Cement, mixture I (3: 3: 1) Fly Ash 43% , mixture II (4 : 3 : 1) Fly Ash 50% , and mixture III (5 : 3 : 1) Fly Ash 56% calculation divided based on the percentage of the amount of Fly Ash , obtained the compressive strength value of Interlock brick from the Fly Ash mixture in mixture I 16.0 kg/m2 and water absorption capacity 20%, mixture II 24.7 kg/m 2 and strength water absorption 17.5%, mixture III 10.3 kg/m 2 and water absorption 21.8%. According to SK-SNI-S-04-1989-F Interlock brick mix II with a Fly Ash composition of 50% is close to class K25 (25 kg/m 2 ) and has an absorption capacity value of <20.0% according to the absorption capacity limit based on SNI 15- 2094-2000.Keywords: Interlock Bricks, Fly Ash, Compressive Strength, Water Absorption.

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Improving the mechanical characteristics of environmentally friendly concrete using fly ash and brick powder as partial sand replacements

Filali,

Nasser,

Azougay

2024

Građ materijali i konstrukcije

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Infrastructure and urbanization drive the demand for concrete, which puts pressure on natural resources and jeopardizes the ecosystem. Incorporating recycled materials into concrete can fulfill this demand without sacrificing quality. This study examines the mechanical properties of sustainable concrete, employing fly ash (FA) and brick powder as substitutes for sand in fine aggregates. We evaluated rebound hammer strength, ultrasonic pulse velocity (UPV), workability, compressive strength, and split tensile strength using both destructive and non-destructive assessment methods, comparing them to conventional concrete. Concrete mixtures were developed by substituting 10% of natural sand with brick powder and gradually replacing the remaining sand with fly ash at 10% to 50%. The results clearly show that the best mix of 10% brick powder and 40% fly ash increases compressive strength by 64.81%, split tensile strength by 17.78%, and workability by 48%. The identical mixture yields a notable enhancement in ultrasonic pulse velocity (UPV) of 33.15%, achieving a velocity of 4.9 km/s, and a 32.05% increase in rebound number, resulting in a rebound index of 44.92. A regression analysis indicated a significant correlation among compressive strength, UPV, and rebound index. The combination of 10% brick powder and 40% fly ash results in enhanced mechanical performance, reduced costs, and supports sustainable construction practices.

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Compressive Strength of Concrete Using Lightweight Brick Waste as the Substitute for Fine Aggregate

Cited by 3 publications

References 20 publications

Experimental Investigation on Sustainable Fibrous Lightweight Leca-Based Concrete With Fine Recycled Aggregates

Experimental Investigation on Sustainable Fibrous Lightweight Leca-Based Concrete With Fine Recycled Aggregates

Compressive Strength and Water Absorption Capacity on Brick Interlock with Fly Ash Addition

Improving the mechanical characteristics of environmentally friendly concrete using fly ash and brick powder as partial sand replacements

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