Characterization of concrete shrinkage induced strains in internally-restrained RC structures by distributed optical fiber sensing
Journal article, 2021

The present paper reports the result of an inter-university experimental investigation on concrete shrinkage induced strains on embedded rebars instrumented with Distributed Optical Fiber Sensors (DOFS). The monitoring was performed for a standard 28 days drying time and for a shorter 6 days time span (reflecting realistic constructions schedules accelerations to meet set deadlines). The tested specimens were Reinforced Concrete (RC) tensile members differing in their geometry, DOFS employed and fiber/rebar bonding techniques. Regarding the latter, a combination of cyanoacrylate (for gluing) and silicone (protection) was found to be the optimal one for deployments inside RC structures. The DOFS-reported combined effect of concrete shrinkage and creep on the embedded rebars is compared with the Model Code 2010's predictions and employed to extract conclusions on the residual performance of the RC members at the end of their drying phase.

Concrete shrinkage

DFOS

Distributed Optical Fiber Sensors

Concrete

Shrinkage

DOFS

Author

Mattia Francesco Bado

Vilniaus Gedimino technikos universitetas

Polytechnic University of Catalonia

Joan R. Casas

Polytechnic University of Catalonia

Alinda Dey

Vilniaus Gedimino technikos universitetas

Carlos Gil Berrocal

Chalmers, Architecture and Civil Engineering, Structural Engineering

Gintaris Kaklauskas

Vilniaus Gedimino technikos universitetas

Ignasi Fernandez

Chalmers, Architecture and Civil Engineering, Structural Engineering

Rasmus Rempling

Chalmers, Architecture and Civil Engineering, Structural Engineering

Cement and Concrete Composites

0958-9465 (ISSN)

Vol. 120 104058

SensIT - Sensor driven cloud-based strategies for infrastructure management

WSP Sverige, 2018-07-01 -- 2020-08-31.

Microsoft Research, 2018-07-01 -- 2020-08-31.

NCC AB, 2018-07-01 -- 2020-08-31.

Swedish Transport Administration (2018/27871), 2018-07-01 -- 2020-08-31.

Thomas Concrete Group, 2018-07-01 -- 2020-08-31.

Subject Categories

Applied Mechanics

Paper, Pulp and Fiber Technology

Other Materials Engineering

DOI

10.1016/j.cemconcomp.2021.104058

More information

Latest update

5/20/2021