B Sena Da Fonseca
Biographic Data
| ID | 47267 |
|---|---|
| NAME | B Sena Da Fonseca |
| GIVEN NAMES | B Sena |
| FAMILY NAME | Da Fonseca |
| SIGNATURE | DA FONSECA B S |
| AFFILIATIONS | University of Lisbon |
| ORCID | 0000-0003-2166-0430 |
| VERIFIED | Yes |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 4 |
| WORKS AS AUTHOR | 8 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2019 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Hydrophobic protection and consolidation of porous stone
This study compares multifunction and multilayer conservation treatments designed to couple both hydrophobic and consolidation effects in porous stones, having in common ethyl-silicate based products. The practical difference lies in how the products are applied and where their effects concentrate. Multifunction treatments result from the application of products that co-deposit a consolidant and a hydrophobic agent in a single deep-penetrating st…
Study of an eco-friendly path to prepare effective alkoxysilane-based consolidants for stone conservation without organic solvents
New mixtures with Dyn 40 oligomeric precursor and acid/base catalysts were designed. • Catalyst and water ratios play an important role in the preparation of adequate mixtures. • Both types of catalysts are capable to generate formulations with suitable characteristics. • Designed mixtures were capable to improve the drilling resistance of stones. • Effective stone consolidants were developed without the addition of solvents. Finding a balance be…
Sonocatalysis
Ability of novel consolidants to improve cohesion of carbonate stones
This work aims at investigating and comparing the ability of novel products to act as consolidants for carbonate stones and how the lithotype and testing conditions influence the perception of their initial efficacy. Novel consolidants based in alkoxysilanes and ammonium phosphate can penetrate deeply, and have initial efficacy on porous limestone in a pre-collapse condition and on marble in granular disintegration, when applied by brushing until…
Consolidating efficacy of diammonium hydrogen phosphate on artificially aged and naturally weathered coarse-grained marble
The effects induced by diammonium hydrogen phosphate (DAP) on coarse marble varieties susceptible to granular disintegration as consolidation material is still poorly addressed. The work aims at investigating the behavior and efficacy of diammonium hydrogen phosphate(DAP)-based consolidant prepared in laboratory onto weathered coarse-grained marbles and, in the process, to unveil if the treatment investigated is a possible option to consolidate T…
Alkoxysilane-based sols for consolidation of carbonate stones
The need of a thoughtful methodology to support the design and development of new consolidation products in built heritage is consequence of the demanding requirements that consolidation treatments in built heritage should fulfill; of physical and chemical specificities of porous carbonate stones and of sol–gel processes complexity. Absence of well-defined planning strategies and systematic studies poses serious difficulties in what concerns vali…
Provenance and characterization of stones used in the rubble stone masonry of the National Palace of Sintra (Portugal)
Alkoxysilane-based sols for consolidation of carbonate stones
Ability of novel consolidants to improve cohesion of carbonate stones
This work aims at investigating and comparing the ability of novel products to act as consolidants for carbonate stones and how the lithotype and testing conditions influence the perception of their initial efficacy. Novel consolidants based in alkoxysilanes and ammonium phosphate can penetrate deeply, and have initial efficacy on porous limestone in a pre-collapse condition and on marble in granular disintegration, when applied by brushing until…
Consolidating efficacy of diammonium hydrogen phosphate on artificially aged and naturally weathered coarse-grained marble
The effects induced by diammonium hydrogen phosphate (DAP) on coarse marble varieties susceptible to granular disintegration as consolidation material is still poorly addressed. The work aims at investigating the behavior and efficacy of diammonium hydrogen phosphate(DAP)-based consolidant prepared in laboratory onto weathered coarse-grained marbles and, in the process, to unveil if the treatment investigated is a possible option to consolidate T…
Alkoxysilane-based sols for consolidation of carbonate stones
The need of a thoughtful methodology to support the design and development of new consolidation products in built heritage is consequence of the demanding requirements that consolidation treatments in built heritage should fulfill; of physical and chemical specificities of porous carbonate stones and of sol–gel processes complexity. Absence of well-defined planning strategies and systematic studies poses serious difficulties in what concerns vali…
Alkoxysilane-based sols for consolidation of carbonate stones
Provenance and characterization of stones used in the rubble stone masonry of the National Palace of Sintra (Portugal)
Alkoxysilane-based sols for consolidation of carbonate stones
Alkoxysilane-based sols for consolidation of carbonate stones
The need of a thoughtful methodology to support the design and development of new consolidation products in built heritage is consequence of the demanding requirements that consolidation treatments in built heritage should fulfill; of physical and chemical specificities of porous carbonate stones and of sol–gel processes complexity. Absence of well-defined planning strategies and systematic studies poses serious difficulties in what concerns vali…
Consolidating efficacy of diammonium hydrogen phosphate on artificially aged and naturally weathered coarse-grained marble
The effects induced by diammonium hydrogen phosphate (DAP) on coarse marble varieties susceptible to granular disintegration as consolidation material is still poorly addressed. The work aims at investigating the behavior and efficacy of diammonium hydrogen phosphate(DAP)-based consolidant prepared in laboratory onto weathered coarse-grained marbles and, in the process, to unveil if the treatment investigated is a possible option to consolidate T…
Ability of novel consolidants to improve cohesion of carbonate stones
This work aims at investigating and comparing the ability of novel products to act as consolidants for carbonate stones and how the lithotype and testing conditions influence the perception of their initial efficacy. Novel consolidants based in alkoxysilanes and ammonium phosphate can penetrate deeply, and have initial efficacy on porous limestone in a pre-collapse condition and on marble in granular disintegration, when applied by brushing until…
Sonocatalysis
Study of an eco-friendly path to prepare effective alkoxysilane-based consolidants for stone conservation without organic solvents
New mixtures with Dyn 40 oligomeric precursor and acid/base catalysts were designed. • Catalyst and water ratios play an important role in the preparation of adequate mixtures. • Both types of catalysts are capable to generate formulations with suitable characteristics. • Designed mixtures were capable to improve the drilling resistance of stones. • Effective stone consolidants were developed without the addition of solvents. Finding a balance be…
Hydrophobic protection and consolidation of porous stone
This study compares multifunction and multilayer conservation treatments designed to couple both hydrophobic and consolidation effects in porous stones, having in common ethyl-silicate based products. The practical difference lies in how the products are applied and where their effects concentrate. Multifunction treatments result from the application of products that co-deposit a consolidant and a hydrophobic agent in a single deep-penetrating st…
Building materials and conservation (8 works) · Materials Science (6 works) · Geology (5 works) · Concrete and Cement Materials Research (4 works) · Metallurgy (4 works) · Aerogels and thermal insulation (3 works) · Carbonate (3 works) · Chemistry (3 works) · Conservation Techniques and Studies (3 works) · Endodontics and Root Canal Treatments (3 works)