Enhancing the durability properties of concrete containing recycled aggregate by the use of pozzolanic materials

Hwang, Jun Phil; Shim, Hackjoon; Lim, Sooyoung; Ann, Ki Yong

doi:10.1007/s12205-013-1245-5

Cited by 76 publications

(27 citation statements)

References 17 publications

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“…Furthermore, according to Piaw 119 , the coefficients of correlation (R) show that there is a very strong correlation between the two variables. A similar analysis ( Figure 6) was performed with the total charge passed of RAC mixes produced with binder equivalent to CEM I 27 , based on 123 measurements sourced from 16 publications 44,46,[50][51][52][53][54]57,59,60,[75][76][77]81,82,87 . As in Figure 4, factors related to the use of RA in concrete, known to have a significant influence on the resistance to chloride ion penetration, appear to have had marginal effect on the relationship between the total charge passed and compressive strength.…”

Section: Metakaolinmentioning

confidence: 99%

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

2015

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This paper provides a literature review and analysis of the various influencing aspects related to the use of recycled aggregates, sourced from construction and demolition waste, on the chloride ion penetration of concrete. A statistical analysis on the effect of incorporating increasing amounts of recycled aggregates of different type, size, and class on the chloride ion migration and total charge passed of concrete is also presented. The paper also presents the relationship between these properties and the corresponding compressive strength. The results show strong correlations between these parameters, which are independent of other aspects related to recycled aggregate use and made it possible obtaining a relationship between the values acquired via NT Build 492 and ASTM C1202.

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Section: Metakaolinmentioning

confidence: 99%

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

2015

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“…The high level of charge passage (˃4000 coulombs) in RAC may be attributed to the porosity of recycled concrete aggregates. Unlike natural aggregate, the (RCA) itself imposes the higher porosity arising from the mortar debris on the surface of the (RCA) particles, which could substantially enhance the ionic mobility [9]. However, the concretes containing both limestone filler and volcanic scoria showed the best performance among all the specimens.…”

Section: Production Of Greener Recycled Aggregate Concretes Using Locmentioning

confidence: 99%

“…The replacement of Portland cement by SCMs could significantly minimize the quantity of CO2 released and the energy consumed [3,4]. Furthermore, the addition of SCMs has been found to improve the properties of RAC [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

al-Swaidani¹

2017

MOJCE

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In the study, supplementary cementing materials (SCMs) have been added in an attempt to improve the performance of recycled aggregate concrete. The use of such eco-friendly materials could also promote a further greening practice in the concrete industry. The concrete performance was evaluated in terms of mechanical properties and concrete permeability. Mechanical properties investigated include compressive strength and modulus of elasticity of concrete. Water permeability, chloride penetrability have particularly been studied to evaluate the permeability properties. The results revealed that the use of SCMs could improve produce greater compressive and modulus of elasticity than those of the recycled aggregate concrete alone. Further, the results showed that permeability properties of recycled aggregate concrete have significantly been improved with addition of these SCMs. Basaltic aggregates were used for comparison and SEM analysis was employed as well.

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“…To improve the corrosion resistance in terms of high resistivity to deteriorating mass ingress, ordinary Portland cement (OPC) blending with supplementary cement such as granulated blast furnace slag (GGBS) and pulverized fuel ash (PFA) was widely used [1,2]. As compared with OPC concrete, this blending cement concrete generally has lower diffusion coefficient, resulting from lower connectivity with small capillary pores [3,4] and higher binding capacity [5,6].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Electrochemical Treatment of Chloride Contaminated Mortar Containing GGBS

Lee

Jung

Hwang

et al. 2017

Advances in Materials Science and Engineering

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The present study concerns the influence of cementitious binder on electrochemical treatment of steel embedded in salt contaminated mortar. As binder, ordinary Portland cement (OPC) and ground granulated blast furnace slag (GGBS) were used and the current density of 250-750 mA/m 2 was applied for 4 weeks to complete electrochemical chloride extraction. To evaluate the effect of electrochemical treatment the chloride profile and corrosion behaviour covering chloride concentration, galvanic current density, linear polarization resistance, open circuit potential, and mass loss were measured. An increase in the applied direct current density resulted in a decrease in the chloride concentration at the vicinity of steel, accompanying the mitigated corrosion damage. The performance of electrochemical treatment was more remarkable in mortar containing GGBS presumably due to binding mechanism. However, corrosion damage was more detrimental in GGBS rather than OPC at a given potential, while GGBS had superior corrosion resistance to a corrosive environment and treatment conditions. Therefore, the electrochemical treatment should be conducted prudently to evaluate the corrosion state of embedded steel depending on binder type.

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Enhancing the durability properties of concrete containing recycled aggregate by the use of pozzolanic materials

Cited by 76 publications

References 17 publications

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

Evaluation of Electrochemical Treatment of Chloride Contaminated Mortar Containing GGBS

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