Performance of recycled aggregate concrete monitored by durability indexes

Olorunsogo, F.T.; Padayachee, N

doi:10.1016/s0008-8846(01)00653-6

Cited by 355 publications

(151 citation statements)

References 2 publications

Supporting

Mentioning

114

Contrasting

Unclassified

Order By: Relevance

“…The predicted load-carrying capacity (N uc ) and the experiment results (N ue ) are presented in Table ( 4). The strain of steel bar of specimen RC-0-1-2 did not reach the yield strain when loading till failure.…”

Section: The Bearing Capacitymentioning

confidence: 99%

“…The specimen lost the bearing capacity quickly, attributing to the crushed concrete at the loaded end. Therefore, the ultimate strength of specimen RC-0-1-2 was not listed in Table (4). It can be seen from Table (4) that the absolute value of errors from test results and calculated results are within 10%.…”

Section: The Bearing Capacitymentioning

confidence: 99%

“…Till now, a lot of researchers have conducted experimental research on the basic physical property and mechanical behavior of RAC. Olorunsogo and Padayachee [4], Nangataki et al [5], Oikonomou [6], Khatib [7]discovered that the compressive strength, shear strength and tension strength of RAC were much lower than those of NAC. The previous findings mainly focus on the short-term mechanical behaviors of RAC; however, the research on the durability (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Compressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members

Niu¹,

Wang²,

Zhang³

et al. 2017

TOCIEJ

View full text Add to dashboard Cite

Introduction:Freeze-thaw resistance of recycled aggregate concrete with partial or total replacement of recycled aggregate compared with that of natural aggregate concrete was investigated in this paper. Method:Ninety specimens were fabricated to study the influence of different recycled aggregate replacement ratios on the surface scaling, mass loss, and residual compressive strength after 100 freeze-thaw cycles. Results:The experiment results indicate that the type of recycled aggregate and its replacement ratio have significant effects on the freezethaw performance. The cubic compressive strength of recycled aggregate concrete is overall slightly lower than that of normal concrete. After 100 freeze-thaw cycles, the compressive strength decreases and the reduction extent increases with increasing replacement rate of recycled aggregate. The surface scaling of reinforced recycled concrete prisms tends to be more severe with the increase of freeze-thaw cycles. Conclusion:Furthermore, a notable rise in mass loss and the bearing capacity loss is also found as the substitution ratio increases. Under the same replacement rate, recycled fine aggregate causes more negative effects on the freeze-thaw resistance than recycled coarse aggregate.

show abstract

Section: The Bearing Capacitymentioning

confidence: 99%

Section: The Bearing Capacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members

Niu¹,

Wang²,

Zhang³

et al. 2017

TOCIEJ

View full text Add to dashboard Cite

show abstract

“…RA can be produced from different sources like broken precast elements and cubes after testing, and demolished concrete buildings (Rao et al, 2007). Olorunsogo & Padayachee (2002) revealed that RA consisting materials like dust, mortar, brick, stone and mortar. In RA, the lowest percentage of proportion is dust which accounted 1.90% and the highest proportion is stone and mortar which is 84.60% (Olorunsogo & Padayachee, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Olorunsogo & Padayachee (2002) revealed that RA consisting materials like dust, mortar, brick, stone and mortar. In RA, the lowest percentage of proportion is dust which accounted 1.90% and the highest proportion is stone and mortar which is 84.60% (Olorunsogo & Padayachee, 2002). RA can be produced from large amount of waste material from construction industry which this waste material can lead into environmental problem.…”

Section: Introductionmentioning

confidence: 99%

Study on Concrete Containing Recycled Aggregates Immersed in Epoxy Resin

2016

View full text Add to dashboard Cite

Abstract. In recent decades, engineers have sought a more sustainable method to dispose of concrete construction and demolition waste. One solution is to crush this waste concrete into a usable gradation for new concrete mixes. This not only reduces the amount of waste entering landfills but also alleviates the burden on existing sources of quality natural concrete aggregates. There are too many kinds of waste but here constructions waste will be the priority target that should be solved .It could be managed by several ways such as recycling and reusing the concrete components, and the best choice of these components is the aggregate, because of the ease process of recycle it. In addition, recycled aggregates and normal aggregates were immersed in epoxy resin and put in concrete mixtures with 0%, 5%, 10% and 20% which affected the concrete mixtures properties. The strength of the concrete for both normal and recycled aggregates has increased after immersed the aggregates in epoxy resin. The percentage of water absorption and the coefficient of water permeability decreased with the increasing of the normal and the recycled aggregates immersed in epoxy resin. Generally the tests which have been conducted to the concrete mixtures have a significant results after using the epoxy resin with both normal and recycled aggregates.

show abstract

Properties of concrete made with recycled coarse aggregate from waste brick

Zhang

Zong

2013

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Demolition of old buildings has produced a large amount of waste material. In this paper, experiments were performed to design the mix proportion of concrete made with recycled coarse aggregate from waste brick, and the workability, mechanical performance, and durability of the concrete with different contents of recycled coarse aggregate have also been investigated. Waste brick was used to replace natural aggregate after being treated, called recycled coarse aggregate (RA). Furthermore, fly ash was used as 0, 10%, 15%, and 20% by weight replacements of cement. Workability was evaluated through slump and cohesiveness testing, and results implied that the concrete samples showed good workability except the mix containing 40% RA. Mechanical performance testing indicated that addition of RA decreased compressive strength, and replacing up to 30% of natural aggregate with RA produced concrete samples which met the requirements of strength standards. Concrete with RA presented a little higher chloride ion penetration coefficient and carbonation depth than normal concrete due to the higher porosity. Pore structure testing also indicated that recycled aggregate from waste brick can increase the porosity of the concrete. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 1283–1289, 2014

show abstract

Performance of recycled aggregate concrete monitored by durability indexes

Cited by 355 publications

References 2 publications

Compressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members

Compressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members

Study on Concrete Containing Recycled Aggregates Immersed in Epoxy Resin

Properties of concrete made with recycled coarse aggregate from waste brick

Contact Info

Product

Resources

About