Using recycled demolition waste in concrete building blocks

Soutsos, Marios; Millard, S.G.; Bungey, J. H.; Jones, Norman L.; Tickell, R.G.; Gradwell, J.

doi:10.1680/ensu.157.3.139.48639

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Table 2 shows the properties of natural sand and recyled fine aggregate. This experiment used recycled fine aggregate as replacement were 55%, 65% and 75% by weight of natural sand [11]. One bacth of bricks had no recycled fine aggregate content as guide to compare the performance of sand cemnet brick containing recycled fine aggregate.…”

Section: Methodsmentioning

confidence: 99%

“…Matias et al [10] mentioned that the increase in hardened strength is due to the rough surface of recycled fine aggregate which provides better adherence to concrete matrix. Soutsos et al [11] studied the sand cement brick from waste concrete and bricks to replace coarse and fine aggregates. Southos et al [11] claimed that the brick conatining 60% replacement of coarse aggregate shows presented significant implications.…”

Section: Introductionmentioning

confidence: 99%

“…Soutsos et al [11] studied the sand cement brick from waste concrete and bricks to replace coarse and fine aggregates. Southos et al [11] claimed that the brick conatining 60% replacement of coarse aggregate shows presented significant implications.…”

Section: Introductionmentioning

confidence: 99%

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Sand Cement Brick Containing Recycled Concrete Aggregate as Fine-Aggregate Replacement

Khalid¹,

Herman²,

Azmi³

et al. 2017

MATEC Web Conf.

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Abstract. Nowadays, the usage amount of the concrete is increasing drastically. The construction industry is a huge consumer of natural consumer. It is also producing the huge wastage products. The usage of concrete has been charged to be not environmentally friendly due to depletion of reserve natural resources, high energy consumption and disposal issues. The conservation of natural resources and reduction of disposal site by reuse and recycling waste material was interest possibilites. The aim of this study is to determine the physical and mechanical properties of sand cement brick containing recycled concrete aggregate and to determine the optimum mix ratio containing recycled concrete aggregate. An experiment done by comparing the result of control specimen using 100% natural sand with recycled concrete aggregate replacement specimen by weight for 55%, 65%, and 75%. The sample was tested under density, compressive strength, flexural strength and water absorption to study the effect of using recycled concrete aggregate on the physical and mechanical properties of bricks. The result shows that the replacement of natural sand by recycled concrete aggregate at the level of 55% provide the highest compressive and flexural strength compared to other percentage and control specimen. However, if the replacement higher than 55%, the strength of brick was decreased for compressive and flexural strength, respectively. The relationship of compressive-flexural strength is determined from statistical analysis and the predicted result can be obtained by using equation f f,RCA = 0.5375 (f c ) 0.3272 .

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sand Cement Brick Containing Recycled Concrete Aggregate as Fine-Aggregate Replacement

Khalid¹,

Herman²,

Azmi³

et al. 2017

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…Many wastes generated during production and manufacturing, and by consumers, such as blast furnace slag, polystyrene and fly ash, can be used in concrete as additives (ECCO, 2000). Concrete debris can be recovered by on‐ and off‐site crushing and reused as compacted base, or mixed into fresh concrete (Parry, 2004; Soutsos et al , 2004). Concrete can be recycled off site using similar processes (Montgomery, 1998).…”

Section: Construction Materials Recyclingmentioning

confidence: 99%

Sustainable recycling approach: an understanding of designers' and contractors' recycling responsibilities throughout the life cycle of buildings in two US cities

Srour¹,

Chong²,

Zhang³

2012

Sustainable Development

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Despite the surge of interest in construction sustainability, the rate of construction recycling is still trailing behind that of other industries. Extensive recycling, for instance, is limited to a few types of construction material. This paper analyzes recycling situations across the United States (US) and identifies common obstacles to recycling in the context of the US construction industry. Through a set of interviews with industry practitioners, obstacles are classified into six factors: social, environmental, economic, material, participant and regional. The obstacles are then tested on a recently demolished building in the San Antonio, TX, area, and compared with a hypothetical scenario in San Diego, CA. The study found that designers, and contractors (to a lesser extent), play a crucial role in achieving higher recycling rates. Specific practices that designers can use include collecting information on materials lifetime and recyclability in the region, reducing the number of materials used and component sizes, using two‐stage building systems and recording changes during construction and operation. Copyright © 2010 John Wiley & Sons, Ltd and ERP Environment.

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