Results 111 to 120 of about 34,992 (234)

Structure of the magma plumbing system beneath Semisopochnoi Island (Aleutian Arc) inferred from seismic tomography. [PDF]

Sci Rep, 2022
Yaroshenko G, Koulakov I, Al-Arifi N, Qaysi S, El Khrepy S.   +4 more
europepmc   +1 more source

CORR‐DATA: A database of corrosion parameters measured on existing reinforced concrete structures for enhanced structural assessment

Structural Concrete, EarlyView.
Abstract The corrosion of reinforcing bars embedded in concrete strongly compromises structural performance over time. However, its detection and quantification remain challenging due to limited comprehensive knowledge of natural corrosion patterns in existing structures.
Elena Casprini, Leonardo Todisco, Severin Haefliger   +2 more
wiley   +1 more source

Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography. [PDF]

Sci Rep, 2021
Obayashi M, Yoshimitsu J, Suetsugu D, Shiobara H, Sugioka H, Ito A, Isse T, Ishihara Y, Tanaka S, Tonegawa T.   +9 more
europepmc   +1 more source

Performance of two‐to‐one non‐contact post‐installed lap splices

Structural Concrete, EarlyView.
Abstract Post‐installed lap splices ensure the continuity of steel reinforcement in concrete‐to‐concrete connections by overlapping cast‐in (CI) reinforcing bars (rebars) with post‐installed (PI) rebars. Typically, the design of such splices follows provisions originally intended for CI lap splices, despite the differences in execution and bond ...
Jose I. Croppi, Mark Alexander Ahrens, Alessandro Palmeri, Roberto Piccinin, Peter Mark   +4 more
wiley   +1 more source

On the preservation of reinforced concrete architectural masterpieces: The challenges of the REcube project

Structural Concrete, EarlyView.
Abstract The preservation of reinforced concrete masterpieces from the 20th century poses a complex challenge. These structures often combine architectural, historical, and technological value, which standard engineering codes and conservation practices are not fully equipped to address. The Erasmus+ REcube project responded to this gap by promoting an
Elisabetta Margiotta Nervi, Giulio Zani, Marco di Prisco   +2 more
wiley   +1 more source

2D Near‐Surface Full‐Waveform Tomography Reveals Bedrock Controls on Critical Zone Architecture

Earth and Space Science
For decades, seismic imaging methods have been used to study the critical zone, Earth's thin, life‐supporting skin. The vast majority of critical zone seismic studies use traveltime tomography, which poorly resolves heterogeneity at many scales relevant ...
B. J. Eppinger, W. S. Holbrook, Z. Liu, B. A. Flinchum, J. Tromp   +4 more
doaj   +1 more source

Experimental investigation of reinforced concrete members subjected to reversed cyclic axial loading

Structural Concrete, EarlyView.
Abstract This paper presents an experimental campaign of five reinforced concrete members subjected to cyclic axial loading alternating between tension and compression. Fiber optical sensors and digital image correlation, in combination with automated crack detection and measurement, were used to investigate, among other aspects, the development of ...
Simon Karrer, Karel Thoma, Walter Kaufmann   +2 more
wiley   +1 more source

Structure-controlled asperities of the 1920 Haiyuan M8.5 and 1927 Gulang M8 earthquakes, NE Tibet, China, revealed by high-resolution seismic tomography. [PDF]

Sci Rep, 2021
Sun Q, Pei S, Cui Z, Chen YJ, Liu Y, Xue X, Li J, Li L, Zuo H.   +8 more
europepmc   +1 more source

Evaluations of the effectiveness of the near‐surface mounted steel materials in strengthening short RC wall‐like columns with openings

Structural Concrete, EarlyView.
Abstract In practice, reinforced concrete (RC) wall‐like columns often have openings to facilitate building services, which creates stress concentrations around the opening, resulting in the weakening of their load‐carrying capacity. This study proposes innovative strengthening methods using near‐surface mounted (NSM) incorporating steel materials to ...
Ahmed Hamoda, Mizan Ahmed, Mohamed Ghalla, Ahmad G. Saad, Aref A. Abadel   +4 more
wiley   +1 more source

Diffraction and seismic tomography [PDF]

Geophysical Journal International, 1992
SUMMARY Diffraction tomography is formulated in such a way that the data (traveltime4r waveform perturbations) are related to the medium perturbations through the sum of two terms. The first term is the ray integral of ordinary tomography and involves only phase perturbations.
openaire   +1 more source