Evalution of Salt Crystallisation Effects on Artificial Marble

Year 2018, Volume: 1 Issue: 2, 20 - 24, 30.11.2018

Didem Eren Sarıcı , Nilgün Kızılkaya Engin Özdemir , Fadime Polat

Abstract

Utilisation of artificial marble in the construction
industry is widespreading because of it has got very low porosity show very
good performance and homogeneity, color consistendency and mechanical strength.
Construction and building materials
are exposed to various physical, chemical and environmental interactions and they were
subjected to various atmospheric, climatic and seasonal effects. Some of
these effects are atmospheric pollution, natural
geochemical and physical processes-slow dissolution by rain water, salt
deposition and recrystallization, freeze-thawing cycles, spalling, climatic
factors, air pollution, industrial pollutant, chemical
contaminants, solar radiation, (notably acid rain), bio deterioration  and 
thermal effects. These effects can cause deteriorate partially or completely
and changes  marketability of
natural building stones .In this
study two commercially available and extensively
used artificial marble were subjected to
salt crystallization ageing test according to TS EN 12370. Test samples
subjected to 14% Na₂SO₄.10H₂SO₄
solutions. The changes in physical and color
properties L,a,b) and glossiness of samples has been determined and evaluated. Experimental results showed that, salt
crystallization has led to changes of weight, porosity, unit weight and color
and glossiness. Weight, glossiness decreased as the whiteness (L), redness (a),
yellowness (b), porosity increased.

Keywords

salt crystallisation

References

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