Browsing by Keyword "Arch"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Innovative strengthening solution based on Textile Reinforced Mortar for stone masonry arches(2010) Garmendia, Leire; San-José, José Tomás; García, David; Larrinaga, Pello; Díez, Jesús; Tecnalia Research & Innovation; TRAZABILIDAD CIRCULAR; E&I SEGURAS Y RESILIENTESThis paper aims to present the design, strengthening and testing of full scale masonry walls and arches. The preservation of our cultural heritage is a really important topic. Majority of masonry structures are deteriorated because of ageing effects, load increments, movements at their foundations, etc. Because of this, retrofitting is needed. In order to afford this problem, a compatible and minimally invasive strengthening technique based on Textile Reinforced Mortar (TRM) is developed. The experimental campaign consists of the characterisation of the constitutive materials of the stone structures and the strengthening textile and mortar (TRM has been characterised by pure tensile tests). Furthermore, the influence of the different arrangements of the masonry and mortar type has been analysed by testing 24 masonry prisms. Finally, 12 full-scale stone arches have been erected, strengthened and tested. The purpose is to compare the mechanical behaviour up to failure of both unstrengthened and strengthened structures. During the tests the effectiveness of the technique has been proved being the ultimate load up to 21 times higher.Item Rehabilitation of masonry arches with compatible advanced composite material(2011-12) Garmendia, L.; San-José, J. T.; García, D.; Larrinaga, P.; Tecnalia Research & Innovation; TRAZABILIDAD CIRCULARStone masonry arches are structures of great functional and architectural importance as they may be found in a large number of constructions that are mainly historic buildings. Although relatively solid structures, time has taught us that environmental conditions, as well as their load history, use and possible accidents can lead to their collapse, all of which entails a risk of losing a large amount of our architectural and cultural heritage. In this research work a compatible strengthening system for the rehabilitation of stone arches was investigated. The strengthening material was constituted of basalt textile embedded in an inorganic matrix known as Basalt Textile-Reinforced Mortar (BTRM) and provides an alternative to the usual reinforcement methods. The research work was based on an integral analysis of this reinforcement solution and its application to stone masonry. The first stage involved physical-chemical and mechanical tests to characterise the materials that constitute the masonry and the strengthening system. In the second stage, six arches were tested by means of displacement control up to the point of collapse. These arches were built according to different criteria: (1) dry or with mortar joints and (2) non-strengthened or strengthened on the extrados. The experimental results obtained in this research work demonstrated good physical-chemical compatibility between the BTRM reinforcement system and the corresponding stone masonry substrate and validated its mechanical effectiveness for the reinforcement of arched structures in terms of load-bearing capacity and ductility.