Event Title

Micro armed concrete and cracks on slabs

Session

Civil Engineering, Infrastructure and Environment

Description

The purpose of this work is to describe fibres properties, micro armed concrete as a composite material and the use of it as a solution to prevent the cracks on slabs.

The purpose of fiber usage inside a concrete mass is to create a composite material by creating a skeleton concrete from fibre (glass, carbon, synthetic, etc..) in order to improve the properties of the concrete, increasing the ductility, decrease the plain and volumetric cracks.

The aim of this experimental program was to obtain concrete properties reinforced with fibres, espetially from bend tests.

There were identified considerable causes that affect cracks, including here thermal movements, plastic shrinkage, and early age settlement, as well as a number of other issues. Polymer fibre represent the possible solution to avoid the cracks in slabs: they have shown to be the appropriate element to improve properties during the early age, such as shrinkage and deflection, and most of all, fibre improve the behavior of the construction after the cracks.

It has been noticed that fibre reduces early age shrinkage, with the effect of increasing the dosage. Long term shrinkage is not affected by using polymer fibres. Concrete strength during the early age has been improved with the use of fibres, but in long term somehow it has decreased when there were used high dose of fibres. It has been shown those fibre properties are appropriate indicators to avoid slab crack.

Keywords:

Composite materials, fiber, micro armed concrete, SKEN-1992-1-1

Session Chair

Liberato Ferrara

Session Co-Chair

Kubilay Akçaözoglu

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-437-54-7

Location

Durres, Albania

Start Date

28-10-2017 4:00 PM

End Date

28-10-2017 5:50 PM

DOI

10.33107/ubt-ic.2017.73

This document is currently not available here.

Share

COinS
 
Oct 28th, 4:00 PM Oct 28th, 5:50 PM

Micro armed concrete and cracks on slabs

Durres, Albania

The purpose of this work is to describe fibres properties, micro armed concrete as a composite material and the use of it as a solution to prevent the cracks on slabs.

The purpose of fiber usage inside a concrete mass is to create a composite material by creating a skeleton concrete from fibre (glass, carbon, synthetic, etc..) in order to improve the properties of the concrete, increasing the ductility, decrease the plain and volumetric cracks.

The aim of this experimental program was to obtain concrete properties reinforced with fibres, espetially from bend tests.

There were identified considerable causes that affect cracks, including here thermal movements, plastic shrinkage, and early age settlement, as well as a number of other issues. Polymer fibre represent the possible solution to avoid the cracks in slabs: they have shown to be the appropriate element to improve properties during the early age, such as shrinkage and deflection, and most of all, fibre improve the behavior of the construction after the cracks.

It has been noticed that fibre reduces early age shrinkage, with the effect of increasing the dosage. Long term shrinkage is not affected by using polymer fibres. Concrete strength during the early age has been improved with the use of fibres, but in long term somehow it has decreased when there were used high dose of fibres. It has been shown those fibre properties are appropriate indicators to avoid slab crack.