Characterization of concrete shrinkage induced strains in internally-restrained RC structures by distributed optical fiber sensing
Artikel i vetenskaplig tidskrift, 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

Författare

Mattia Francesco Bado

Vilniaus Gedimino technikos universitetas

Universitat Politecnica de Catalunya

Joan R. Casas

Universitat Politecnica de Catalunya

Alinda Dey

Vilniaus Gedimino technikos universitetas

Carlos Gil Berrocal

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Gintaris Kaklauskas

Vilniaus Gedimino technikos universitetas

Ignasi Fernandez

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Rasmus Rempling

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Cement and Concrete Composites

0958-9465 (ISSN)

Vol. 120 104058

SensIT – Sensorstyrd molnbaserad förvaltningsstrategi av infrastruktur

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

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

Trafikverket, 2018-07-01 -- 2020-08-31.

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

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

Ämneskategorier

Teknisk mekanik

Pappers-, massa- och fiberteknik

Annan materialteknik

DOI

10.1016/j.cemconcomp.2021.104058

Mer information

Senast uppdaterat

2021-05-20