Volume changes of concrete in interaction with sliding joint

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F19%3A10250008" target="_blank" >RIV/61989100:27120/19:10250008 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3846/mbmst.2019.070" target="_blank" >http://dx.doi.org/10.3846/mbmst.2019.070</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3846/mbmst.2019.070" target="_blank" >10.3846/mbmst.2019.070</a>

Result language

angličtina

Original language name

Volume changes of concrete in interaction with sliding joint

Original language description

The paper describes volume changes of cement plain concrete and steel fiber reinforced concrete with strength class C 30/37 in interaction with sliding joints. In the research experiment was performed large-dimensional specimens, on which volume changes were measured using string strain gauges. Below the large-dimensional specimens were designed sliding joints. The specimens were placed in a controlled laboratory environment and in an outdoor environment to simulate real conditions during construction and the measurements were carried out for several months. Volume changes of the concrete were compared to each other and significant influence of the sliding joints was observed. Significant influence on the development of volume changes also has dispersed reinforcement. Another part of the article is a comparison of experimental results with calculation models that allow to calculate the final shrinkage of concrete. Comparison results of volume changes with calculation models is important for demonstrating the effect of sliding joint, as currently valid calculation models do not consider the influence of subsoil and sliding joints, and the results are different as expected. For comparison model B4 (Bazant, 2015), model from technical standard EN 1992-1-1 (CSN EN 1992-1-1, 2006), model from fib model code 2010 (FIB, 2010) and model ACI (ACI, 2008) are used. The paper describes a unique experiment dealing with the influence of sliding joint on the development of volume changes of concrete from beginning of setting and hardening of concrete under precisely defined conditions, that allow comparison with calculation models and thus points to the shortcomings of the building practice.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

The 13th International Conference “Modern Building Materials, Structures and Techniques”, 16–17 May, 2019, Vilnius, Lithuania

ISBN

978-609-476-197-3

ISSN

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e-ISSN

2029-9915

Number of pages

7

Pages from-to

387-393

Publisher name

Vilnius Gediminas Technical University

Place of publication

Vilnius

Event location

Vilnius

Event date

May 16, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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