An application of blended fly ash and residual rice husk ash for producing green building bricks

Hwang, Chao‐Lung; Huynh, Trong‐Phuoc; Risdianto, Yogie

doi:10.1080/02533839.2016.1191376

Cited by 14 publications

(8 citation statements)

References 11 publications

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“…Unfired building bricks were prepared in a steel mold, with dimensions of 220×105×65 mm, applying forming pressure of around 5 MPa that is much lower than the forming pressures used in most of the previous studies (10-35 MPa) [3][4][5][6][11][12][13][14][15][16]. The purpose of this study is to assess the use of low forming pressure and industrial and agricultural by-products for producing unfired building bricks.…”

Section: Samples Preparation and Test Programsmentioning

confidence: 99%

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Engineering properties of unfired building bricks produced using URHA-FA cement blends

Ngo¹,

Huynh²

2018

VJSTE

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The production of cement and traditional fired clay bricks consumes intensive energy and inversely affects the environment. In addition, a huge quantity of solid waste materials such as rice husk ash and fly ash (FA) are generated from both industrial and agricultural activities. This study investigates the use of unground rice husk ash (URHA) and FA for manufacturing unfired building bricks. FA was used as a cement substitute (15%, 30%, and 50%), whereas URHA was used as a chippings replacement (5%, 10%, and 15%) in the brick mixtures. Test results indicate that all of the brick samples had consistent dimensions and were free of visible defects. Generally, increasing the URHA or FA replacement levels reduced the strength, bulk density, and material cost. However, it increased the water absorption capacity of the brick samples. Moreover, bricks with 10% URHA and 50% FA registered the lowest cost. Properties of all of the brick samples met the Grade M15 requirements of the TCVN 6477-2011 standard of high-quality unfired building bricks.

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Section: Samples Preparation and Test Programsmentioning

confidence: 99%

“…Recently, rice husk ash has been used for producing unfired building bricks [12][13][14][15][16]. Unfired building bricks were made from FA, rice husk ash, and sand using geopolymerization technology [12][13][14]. Other unfired building bricks were made from cement, FA, and rice husk ash based on the cementing reaction [15][16].…”

Section: Introductionmentioning

confidence: 99%

Engineering properties of unfired building bricks produced using URHA-FA cement blends

Ngo¹,

Huynh²

2018

VJSTE

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“…Re-utilization of these kinds of wastes as usable construction materials is an effective approach and also further brings economic benefits. In Vietnam, for instance, several studies have carried out to investigate the application of various industrial wastes such as unground rice husk ash [7], fly ash and residual rice husk ash [8], ground granulated blastfurnace slag, and circulating fluidized bed combustion ash [9] as construction materials. However, the use of waste bottom ash from incineration plants (IBA) as source material for producing construction materials has been limited.…”

Section: Introductionmentioning

confidence: 99%

Recycling of waste incineration bottom ash in the production of interlocking concrete bricks

Nguyen

Phuoc

Phieu

et al. 2021

STCE

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This study presents an experimental investigation on the recycling of waste incineration bottom ash (IBA) as a fine aggregate in the production of interlocking concrete bricks (ICB). Before being used, the concentration of heavy metal in IBA was determined to confirm it is a non-toxic material. In this study, the IBA was used to replace crushed sand (CSA) in the brick mixtures at different replacement levels of 0%, 25%, 50%, 75%, and 100% (by volume). The ICB samples were checked for dimensions, visible defects, compressive strength, bending strength, water absorption, and surface abrasion in accordance with the related Vietnamese standards. The test results demonstrated that the IBA used in this study was a non-toxic material, which can be widely used for construction activities. All of the ICB samples prepared for this study exhibited a nice shape with consistent dimensions and without any visible defects. The incorporation of IBA in the brick mixtures affected engineering properties of the ICB samples such as a reduction in the compressive strength and bending strength and an increment in water absorption and surface abrasion of the brick samples. As a result, the compressive strength, bending strength, water absorption, and surface abrasion values of ICB samples at 28 days were in the ranges of 20.6 – 34.9 MPa, 3.95 – 6.62 MPa, 3.8 – 7.2%, and 0.132 – 0.187 g/cm2, respectively. Therefore, either partial or full replacement of CSA by IBA, the ICB with grades of M200 – M300 could be produced with satisfying the TCVN 6476:1999 standard in terms of dimensions, visible defects, compressive strength, water absorption, and surface abrasion. These results demonstrated the high applicability of the local IBA in the production of the ICB for various construction application purposes. Keywords: interlocking concrete brick; waste incineration bottom ash; visible defect; compressive strength; bending strength; water absorption; surface abrasion.

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“…While some studies investigated the use of rice husk as a component in fired -clay bricks [18][19][20][21], others used rice husk ash in the production of unburnt bricks [1,22]. It is noticed that ground rice husk ash can be used as binder materials [1,[22][23][24], whereas unground rice husk ash can be used as fine aggregate [1,22]. Most of test results indicated that both the unit weight and compressive strength of bricks reduced, but the water absorption of bricks increased with the increase in rice husk content.…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly unburnt bricks using raw rice husk and bottom ash as fine aggregates: Physical and mechanical properties

Huy¹,

Tan²,

Hang³

et al. 2021

STCE

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In order to reduce the serious impacts of industrial and agricultural wastes on the environment, raw rice husk and bottom ash were used as fine aggregates, while fly ash was utilized as a binder material in the production of unburnt building bricks. Two group mixtures were designed with water-to-binder (W/B) ratios of 0.30 and 0.35. The rice husk was used to replace 0%, 3%, 6%, and 9% of bottom ash content by mass. An experimental program was carried out on the brick samples at different ages from 3-day to 28-day to determine the main physical and mechanical properties of brick, such as unit weight, compressive strength, water absorption, ultrasonic pulse velocity and thermal conductivity. The microstructure of brick material was captured using scanning electron microscope technique. The experimental results allow to identify the effects of rice husk, bottom ash content as well as W/B ratio on the properties of bricks. Brick samples produced in this study had a proper compressive strength meeting the practice requirement and were classified as Grade M3.5 and 5.0 based on TCVN 6477:2016. At the use of 9% rice husk, the unit weight and thermal conductivity of bricks were really low (1.06÷1.08 T/m3 and 0.201÷0.216 W/m.K), they are conformed to be used in temporary construction and insulation structures. Keywords: rice husk; bottom ash; fly ash; unburnt brick; ultrasonic pulse velocity; thermal conductivity.

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An application of blended fly ash and residual rice husk ash for producing green building bricks

Cited by 14 publications

References 11 publications

Engineering properties of unfired building bricks produced using URHA-FA cement blends

Engineering properties of unfired building bricks produced using URHA-FA cement blends

Recycling of waste incineration bottom ash in the production of interlocking concrete bricks

Environmentally friendly unburnt bricks using raw rice husk and bottom ash as fine aggregates: Physical and mechanical properties

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