The process of olive oil extraction produces olive stone, a residue which cause considerable problems ofdisposal. This paper proposes and analyzes an original use of olive stone in order to improve the heat insulationperformances of cement lime mortar and reduce its final density. To this purpose, the paper illustrates a set of small-scale tests, which were conducted on specimens of cement lime mortar mixed with different percentages of olive stone, in compliance with the protocols ISO. These tests allowed to evaluate therelations between thermal conductance, density and water absorption per each percentage of olive stone.It was observed that adding 70% of dry weight of olive stone allowed to reduce the average thermal conductance of cement lime mortar by over 76% and its density by around 30%. Furthermore, tests highlighted that the decrease in thermal conductance, which was related to the increase in the percentage of added olive stone, is greater than the decrease in density. In order for the tests to be carried out, a prototype of portable measuring system was developed, which was based onthe measurement of heat flow and allowed to obtain average thermal conductance values with average error below 10%.

Use of olive stone as an additive in cement lime mortar to improve thermal insulation

BARRECA, Francesco
;
2013

Abstract

The process of olive oil extraction produces olive stone, a residue which cause considerable problems ofdisposal. This paper proposes and analyzes an original use of olive stone in order to improve the heat insulationperformances of cement lime mortar and reduce its final density. To this purpose, the paper illustrates a set of small-scale tests, which were conducted on specimens of cement lime mortar mixed with different percentages of olive stone, in compliance with the protocols ISO. These tests allowed to evaluate therelations between thermal conductance, density and water absorption per each percentage of olive stone.It was observed that adding 70% of dry weight of olive stone allowed to reduce the average thermal conductance of cement lime mortar by over 76% and its density by around 30%. Furthermore, tests highlighted that the decrease in thermal conductance, which was related to the increase in the percentage of added olive stone, is greater than the decrease in density. In order for the tests to be carried out, a prototype of portable measuring system was developed, which was based onthe measurement of heat flow and allowed to obtain average thermal conductance values with average error below 10%.
Agro-industrial waste; Building Insulation; Sustainable building materials; Measurement of thermal resistance; Olive stone; Thermal insulation
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12318/6365
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 65
  • ???jsp.display-item.citation.isi??? 57
social impact