Estimating the permeability of porous aggregate concretes using electrical resistivity based tests

Aragoncillo, Ariel Miguel M.; Cleary, Douglas; Lomboy, Gilson R.

doi:10.1016/j.conbuildmat.2022.129909

Cited by 8 publications

(2 citation statements)

References 25 publications

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“…Furthermore, even when the difference in resistivity between 0% and 100% replacement is statistically significant, as in the present case, the latter may still behave similarly under chloride-induced corrosion. This is because RCA-added concrete may still sustain lower depth of fluid penetration, given the same exposure time and amount of absorbed fluid, due to the larger pores in RCA compared to natural aggregate (Aragoncillo et al , 2023).…”

Section: Resultsmentioning

confidence: 99%

Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens

Benito

Aragoncillo

Pascua³

et al. 2023

WJE

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Purpose The durability of concrete containing recycled aggregates, sourced from concrete specimens that have been tested in laboratory testing facilities, remains understudied. This paper aims to present the results of experiments investigating the effect of incorporating such type of concrete waste on the strength and durability-related properties of concrete. Design/methodology/approach A total of 77 concrete cylinders sized Ø100 × 200 mm with varying amount of recycled concrete aggregate (RCA) (0%–100% by volume, at 25% increments) and maximum aggregate size (12.5, 19.0 and 25.0 mm) were fabricated and tested for slump, compressive strength, sorptivity and electrical resistivity. Disk-shaped specimens, 50-mm thick, were cut from the original cylinders for sorptivity and resistivity tests. Analysis of variance and post hoc test were conducted to detect statistical variability among the data. Findings Compared to regular concrete, a reduction of slump (by 18.6%), strength (15.1%), secondary sorptivity (31.5%) and resistivity (17.0%) were observed from concrete containing 100% RCA. Statistical analyses indicate that these differences are significant. In general, an aggregate size of 19 mm was found to produce the optimum value of slump, compressive strength and sorptivity in regular and RCA-added concrete. Originality/value The results of this study suggest that comparable properties of normal concrete were still achieved by replacing 25% of coarse aggregate volume with 19-mm RCA, which was processed from laboratory-tested concrete samples. Therefore, such material can be considered as a potential and sustainable alternative to crushed gravel for use in light or nonstructural concrete construction.

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Section: Resultsmentioning

confidence: 99%

Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens

Benito

Aragoncillo

Pascua³

et al. 2023

WJE

Self Cite

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“…Electrical resistivity (ER) is another parameter to evaluate the corrosion risk of concrete, 41 ER measurement techniques are becoming popular in the quality control and durability assessment of concrete. [109][110][111] There are two mainstream test methods, one is AASHTO TP 95 by the American Association of State Highway and Transportation Officials, 112 which evaluates surface resistivity; the other is ASTM C1760 by ASTM Committee, 113 which measures the bulk electrical resistivity. In the following discussion, only the experimental data on the bulk electrical resistivity are covered.…”

Section: Corrosion Resistancementioning

confidence: 99%

Recent developments in utilization of nano silica in self‐compacting concrete: A review

Wang

Yang

Chu

et al. 2023

Structural Concrete

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Self‐compacting concrete (SCC) is a type of flowable, high‐strength and high‐performance concrete in the construction field, which can flow and compact under its own weight. The damage of concrete is often caused by internal microstructural defects. Nano silica (NS) has excellent pozzolanic properties, and with an appropriate content of NS as auxiliary cementing material, it can promote the generation of C‐S‐H gels in addition to serve as internal filler, thus improves the micro‐scale defects in concrete. This paper extracts data from studies published over the last decade which focus on the application of NS in SCC and discusses the similarities and differences between the studies. Ultimately, a systematic review of the physical and chemical characteristics of NS, and the effect of NS on the workability, mechanical and durability properties of SCC is presented. Based on the review, the most common NS content is 0%–6%, where the negative effect of 0%–6% NS on the workability of SCC can be controlled by increasing the dosage of superplasticizer. The NS content of 2%–3% is optimum for improving the mechanical strength and the ability of SCC to resist water permeability, corrosion, acid and sulfate attacks, elevated temperature as well as shrinkage.

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Soft computing techniques to predict the electrical resistivity of pervious concrete

2023

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Estimating the permeability of porous aggregate concretes using electrical resistivity based tests

Cited by 8 publications

References 25 publications

Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens

Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens

Recent developments in utilization of nano silica in self‐compacting concrete: A review

Soft computing techniques to predict the electrical resistivity of pervious concrete

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