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Sprayed lightweight material for the strengthening and restoration of urban patrimony

Type of activity
Competitive project
Acronym
MAPPU
Funding entity
MIN DE ECONOMIA Y COMPETITIVIDAD
Funding entity code
BIA2016-78740-R
Amount
96.800,00 €
Start date
2016-12-30
End date
2019-12-29
Keywords
Buildings, Edificación, control de calidad, design, diseño, material proyectado, quality control, refuerzo, rehabilitación, restoration, sostenibilidad, sprayed material, strengthening, sustainability
Abstract
The Spanish urban patrimony is formed by many buildings and auxiliary structures that are about to reach their design life. It is necessary
to invest in their strengthening and restoration in order to recover their functionality and safety. One of the alternatives used with this
purpose nowadays is the spraying of cementitious materials. Despite the great potential of the technique, its efficient applications is still
limited. The available knowledge about the materials, the procedures and the structural design does not allow the execution of a single
strengthening layer that fulfils all requirements established.
In this context, the project MAPPU aims to achieve a substantial scientific and technologic advance in the strengthening with sprayed
cementitious materials, increasing the global sustainability regarding the conservation of the urban patrimony. For that, 4 research lines
should be addressed:
- Improvement of materials through the use of more sustainable sprayed lightweight concrete or mortar with low permeability and low
shrinkage
-Development of models that take into account the specificities of the sprayed material in the optimized design considering creep and bond
with existing steel reinforcement
-Improvement of quality control procedures used to evaluate the properties of the sprayed material (especially short term properties)
-Proposal of durability models that allow an integrated desing of the resulting structure considering both the previous structure and the
restoration.
The main objective of the project is to propose a new strengthening methodology through spraying that should be more compatible with
the boundary conditions and the requirements of each application. As a result, problems related with the deterioration of the materials and
the safety of the structures would be reduced. Furthermore, new constitutive models that are not available for the design of the sprayed
layer will be proposed, thus decreasing expenses of materials and the use of natural resources. Moreover, new method will be developed
for the assessment of the evolution of mechanical properties of the sprayed material, enhancing the efficiency and the quality of the
applications.
Scope
Adm. Estat
Plan
Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016
Call year
2016
Funcding program
Programa Estatal de I+D+i Orientada a los Retos de la Sociedad
Funding call
Retos de Investigación: Proyectos de I+D+i
Grant institution
Gobierno De España. Ministerio De Economía Y Competitividad, Mineco

Participants