A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Size effect on tensile strength of lightweight aggregate concrete: A numerical investigation
Graphical abstract Display Omitted
Highlights The size effect of LWAC subjected to tensile stress was investigated numerically. Mesoscopic models of LWAC direct tensile specimens were established. Strength of LWA influenced the size effect of LWAC significantly. Parameters of SEL were regressed utilizing the results of the simulations.
Abstract Lightweight aggregate concrete (LWAC) showed an obvious brittleness when subjected to the tensile stress, and the related size effect issue was crucial for the analysis and design of structural LWAC. The random aggregate structure was used to establish finite element models, and materials parameters were calibrated by using existing test data. Influences of the ratio of water-to-binder (W/B) materials, grading of lightweight aggregate (LWA), the strength of LWA and the relative strength of interfacial transitional zone on the tensile strength and the size effect of LWAC were evaluated. Finally, the results of simulations were applied to conduct a regression analysis on classical size effect law. It was concluded that the grading of LWA had a relatively more minor influence on the size effect of LWAC in tension, while the W/B ratio and the strength of LWA significantly affected the size effect due to the alteration of the concrete strength. Formulas for parameters in classical size effect law were developed by using the results of numerical analysis.
Size effect on tensile strength of lightweight aggregate concrete: A numerical investigation
Graphical abstract Display Omitted
Highlights The size effect of LWAC subjected to tensile stress was investigated numerically. Mesoscopic models of LWAC direct tensile specimens were established. Strength of LWA influenced the size effect of LWAC significantly. Parameters of SEL were regressed utilizing the results of the simulations.
Abstract Lightweight aggregate concrete (LWAC) showed an obvious brittleness when subjected to the tensile stress, and the related size effect issue was crucial for the analysis and design of structural LWAC. The random aggregate structure was used to establish finite element models, and materials parameters were calibrated by using existing test data. Influences of the ratio of water-to-binder (W/B) materials, grading of lightweight aggregate (LWA), the strength of LWA and the relative strength of interfacial transitional zone on the tensile strength and the size effect of LWAC were evaluated. Finally, the results of simulations were applied to conduct a regression analysis on classical size effect law. It was concluded that the grading of LWA had a relatively more minor influence on the size effect of LWAC in tension, while the W/B ratio and the strength of LWA significantly affected the size effect due to the alteration of the concrete strength. Formulas for parameters in classical size effect law were developed by using the results of numerical analysis.
Size effect on tensile strength of lightweight aggregate concrete: A numerical investigation
2022-01-18
Article (Journal)
Electronic Resource
English
Lightweight high-strength aggregate and lightweight aggregate concrete prepared from same
| European Patent Office | 2024
Strength of Lightweight Glass Aggregate Concrete
| Online Contents | 2006
Strength of Lightweight Glass Aggregate Concrete
| British Library Online Contents | 2006
High-Strength Lightweight Aggregate Concrete Slabs
| British Library Conference Proceedings | 2000
Strength of Lightweight Glass Aggregate Concrete
| British Library Conference Proceedings | 2006