Effects of specimen dimensions and shape on compressive strength of specific autoclaved aerated concrete

Mazur, Wojciech; Drobiec, Łukasz; Jasiński, Radosław

doi:10.1002/cepa.837

Cited by 7 publications

(17 citation statements)

References 3 publications

(4 reference statements)

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“…The paper [27] compares curve correlations developed for cuboid and cylindrical specimens. Obtained values of curve coefficients a and b are compared in Table 4.…”

Section: Minor-destructive Testingmentioning

confidence: 99%

“…Knowing that, apart from the effect of rising and hardening [25,26], also moisture content in AAC influences the compressive strength, tests were performed and additional empirical relations were defined. The analysis included test results [27] from 494 + 127 cylindrical and cuboid specimens used to develop empirical curves. Results obtained from destructive tests on standard cube specimens 100 mm × 100 mm × 100 mm at different moisture content were correlated with results from testing velocity of P-wave generated by point transducers with the transmission method.…”

Section: Introductionmentioning

confidence: 99%

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Validation of Selected Non-Destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

2019

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Minor-destructive (MDT) and non-destructive (NDT) techniques are not commonly used for masonry as they are complex and difficult to perform. This paper describes validation of the following methods: semi-non-destructive, non-destructive, and ultrasonic technique for autoclaved aerated concrete (AAC). The subject of this study covers the compressive strength of AAC test elements with declared various density classes of: 400, 500, 600, and 700 (kg/m3), at various moisture levels. Empirical data including the shape and size of specimens, were established from tests on 494 cylindrical and cuboid specimens, and standard cube specimens 100 mm × 100 mm × 100 mm using the general relationship for ordinary concrete (Neville’s curve). The effect of moisture on AAC was taken into account while determining the strength fBw for 127 standard specimens tested at different levels of water content (w = 100%, 67%, 33%, 23%, and 10%). Defined empirical relations were suitable to correct the compressive strength of dry specimens. For 91 specimens 100 mm × 100 mm × 100 mm, the P-wave velocity cp was tested with the transmission method using the ultrasonic pulse velocity method with exponential transducers. The curve (fBw–cp) for determining the compressive strength of AAC elements with any moisture level (fBw) was established. The developed methods turned out to be statistically significant and can be successfully applied during in-situ tests. Semi-non-destructive testing can be used independently, whereas the non-destructive technique can be only applied when the developed curve fbw–cp is scaled.

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“…The paper [27] compares curve correlations developed for cuboid and cylindrical specimens. Obtained values of curve coefficients a and b are compared in Table 4.…”

Section: Minor-destructive Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Validation of Selected Non-Destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

2019

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“…The paper [15] compares curve correlations developed for cuboid and cylindrical specimens. Obtained values of curve coefficients a and b are compared in Table 4.…”

Section: Specimens a Technique And Test Results For Specimens With Vmentioning

confidence: 99%

“…Knowing that, apart from the effect of rising and hardening [13][14], also moisture content in AAC influences the compressive strength, tests were performed and additional empirical relations were defined. The analysis included test results [15] from 494+127 cylindrical and cuboid specimens used to develop empirical curves. Results obtained from destructive tests on standard cube specimens 100×100×100 mm at different moisture content were correlated with results from testing velocity of P-wave generated by point transducers with the transmission method.…”

Section: Introductionmentioning

confidence: 99%

“…Destruction of specimens with varying slenderness ratio[15]: (a) specimen 143×143×143 mm, (b) specimen 100×100×200 mm, (c) specimen 80×80×158 mm.2.2. Determining an empirical curve in air-dry conditionsPreprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 24 December 2018 Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 24 December 2018 doi:10.20944/preprints201812.0280.v1…”

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confidence: 99%

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Validation of Selected Non-destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

Jasiński

Drobiec²,

Mazur³

2018

Preprint

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Semi-destructive and non-destructive techniques are not commonly used for masonry as they are complex and difficult to perform. This paper describes validation of the following methods: semi-destructive and non-destructive, ultrasonic technique for autoclaved aerated concrete (AAC). The research subject was the compressive strength of AAC test elements with declared various density classes of: 400, 500, 600 and 700 (kg/m3) and various moisture levels. Empirical data including the shape and size of specimens, were established from tests on 494 cylindrical and cuboid specimens, and standard cube specimens 100×100×100 mm using the general relationship for standard concrete (Neville’s curve). The effect of moisture on AAC was taken into account while determining the strength fBw for 127 standard specimens tested at different levels of water content (w = 100%, 67%, 33% 23% and 10%). Defined empirical relations can be used to correct the compressive strength of dry specimens. For 91 specimens 100×100×100 mm, the P-wave velocity cp was tested with the transmission method using using the ultrasonic pulse velocity method with exponential transducers. The curve (fBw – cp) for determining the compressive strength of AAC elements with any moisture level (fBw) was established.

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Evaluation of the compressive strength of autoclaved aerated concrete in existing masonry

Drobiec,

Jasiński,

Mazur

2023

ce papers

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Sclerometric method, commonly used in reinforced concrete structures, have also found application in masonry structures, mainly in the diagnosis of brick masonry walls or testing mortar in joints. This article presents a proposal for determining the compressive strength of autoclaved aerated concrete masonry elements with the use of the Schmidt OS‐120 PT pendulum hammer. The test was carried out on masonry elements with a nominal density class of 400 and 600. Additional tests were also carried out on samples with different levels of humidity, in order to consider the influence of humidity on the change in rebound number and changes in compressive strength.

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Effects of specimen dimensions and shape on compressive strength of specific autoclaved aerated concrete

Cited by 7 publications

References 3 publications

Validation of Selected Non-Destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

Validation of Selected Non-Destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

Validation of Selected Non-destructive Methods for Determining the Compressive Strength of Masonry Units Made of Autoclaved Aerated Concrete

Evaluation of the compressive strength of autoclaved aerated concrete in existing masonry

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