PSI - Issue 5

Aalil Issam et al. / Procedia Structural Integrity 5 (2017) 1123–1128 Aalil Issam/ Structural Integrity Procedia 00 (2017) 000 – 000

1128

6

Table 5. Mortars properties with respect to calcarenite stone properties. M 1 M 2 M 3 M 4 M 5

M 6 17%

M 7

M 8

M 9

CS

6%

18% 18%

20% 11%

5%

10% 11%

2% 6%

5% 8%

7% 6%

Edyn

14%

10%

8%

A

100%

152% 18.29

482% 20.02

589%

352% 10.20

743% 14.87

682%

556%

1020%

∆ E

7.33

5.39

6.89

6.86

10.20

4. Conclusion

This paper presented the results of a preliminary study to find out restoration mortars for the calcarenite stone of Volubilis. After characterization of quarried calcarenite stone, restoration mortars were formulated using aerial lime and regional sand and brick dust. Laboratory analyses of mortars after one month of maturation showed that brick dust improves the compressive strength. Its effect on the porosity and the capillary absorption depends on whether it is used as aggregate or as lime substitution. A comparison of the properties of the calcarenite stone and the mortars made it possible to choose a mortar that seems the most compatible in terms of hydric and mechanical properties. As perspectives, the mortars will be characterised after 3 months and 1 year to validate the preliminary mortar recipe for restoration of the Volubilis calcarenite stone.

Acknowledgements

The authors would like to thank the Moroccan ministry of higher education, scientific research and executive training and the French institute in Morocco for funding a PhD scholarship to develop this work. Our thanks also go to Mr Atki Mustapha, the curator of the Volubilis site.

References

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