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Computers and Concrete
  Volume 12, Number 4, October 2013, pages 553-563
DOI: http://dx.doi.org/10.12989/cac.2013.12.4.553
 


Replicating the chemical composition of the binder for restoration of historic mortars as an optimization problem
D. Miriello, M. Lezzerini, F. Chiaravalloti, A. Bloise, C. Apollaro and G.M. Crisci

 
Abstract
    The present study aims to show how the problem of reproducing, as closely as possible, binders of historic mortars by mixing raw materials which are commercially available, can be formulated as a linear optimization problem. The study points out that by mixing five standard raw materials (end-members) it is possible to obtain mortar binders with the almost same chemical compositions of those determined on the historic and archaeological mortar samples studied in some recent scientific papers. An advanced function of the Microsoft Excel spreadsheet, the Solver add-in, was used for the calculation of the right amount of each raw material to be mixed for producing the new binders. This approach could be useful to provide an optimal solution in the process of restoration of ancient monuments, where it is necessary to replace the historic mortars with new highly compatible repair mortars.
 
Key Words
    mortar; concrete; binder; aggregate; lump; mixing; optimization problem; excel; solver; restoration
 
Address
D. Miriello, A. Bloise, C. Apollaro and G.M. Crisci: DiBEST Dipartimento di Biologia, Ecologia e Scienze della Terra, Università della Calabria, Italy
M. Lezzerini: Dipartimento di Scienze della Terra, Università di Pisa, Italy
F. Chiaravalloti: Dipartimento di Fisica, Università della Calabria, Italy
 

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