Experimental investigation of in-plane shear and compressive behaviour of dry-stacked interlocking concrete masonry
Notice bibliographique
Résumé
Dry-stacked interlocking masonry (DSIM), also known as mortarless masonry, is an alternative construction technique that replaces conventional mortar joints with integrated interlocking shear keys. This system offers significant advantages, including faster construction times and improved cost efficiency. Nevertheless, a notable gap exists in the literature regarding the quantitative assessment of the in-plane shear strength of mortarless masonry systems, particularly with respect to the effects of grouting and reinforcement. Therefore, an experimental program was conducted involving fifteen DSIM assemblages, each measuring 1.20 m × 1.20 m, constructed using mortarless units called Sparlock, with various grouting conditions and vertical and horizontal reinforcement ratios. The assemblages were tested under diagonal compression loading to evaluate their in-plane shear performance in terms of shear strength, modulus of rigidity, and ductility. Additionally, six DSIM prisms were tested under uniaxial compression to evaluate the compressive behaviour of both grouted and ungrouted configurations. The experimentally obtained shear strength values in addition to DSIM walls from literature were further compared with the predicted values derived from existing design standards developed for conventional masonry construction to assess their applicability to dry-stacked interlocking systems. The experimental results showed that DSIM assemblages lacking horizontal reinforcement experienced premature failure, characterized by brittle sliding along the dry joints. In contrast, the horizontally reinforced specimens exhibited a more ductile response, characterized by progressive crack development and enhanced deformation capacity prior to failure. This could be attributed to the layout of the blocks, which is stack-patterned and not staggered. The increase in vertical reinforcement within fully grouted specimens led to a 78 % enhancement in shear strength compared to partially grouted assemblages. Similarly, increasing the horizontal reinforcement ratio in partially grouted assemblages resulted in a 33 % improvement. The shear strength predictions obtained from conventional masonry design equations showed poor correlation with the experimental results, primarily due to the fundamentally different shear-resisting mechanisms present in the DSIM systems. To address this limitation, an equation was proposed to calculate the shear strength for different DSIM systems. The findings of this study contribute to the quantification and potential codification of the shear behaviour of DSIM systems.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».