Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions
Gradual degradation of cementitious materials by exposure to the environment decreases the lifespan of buildings, increasing maintenance andrepair costs. Surface treatments based on alkoxysilanes may prevent weathering effects and repair onset damages, though little attention is paid to how the phys...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Developments in the Built Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165923000984 |
| _version_ | 1827821603186016256 |
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| author | Rafael Zarzuela Manuel Luna Giada Gemelli Jorge Gonzalez-Coneo Inés García-Lodeiro M.T. Blanco-Varela María J. Mosquera |
| author_facet | Rafael Zarzuela Manuel Luna Giada Gemelli Jorge Gonzalez-Coneo Inés García-Lodeiro M.T. Blanco-Varela María J. Mosquera |
| author_sort | Rafael Zarzuela |
| collection | DOAJ |
| description | Gradual degradation of cementitious materials by exposure to the environment decreases the lifespan of buildings, increasing maintenance andrepair costs. Surface treatments based on alkoxysilanes may prevent weathering effects and repair onset damages, though little attention is paid to how the physical-chemical alterations caused by weathering affect their performance.This work reports a comprehensive characterization/validation of an alkoxysilane-based protective treatment on a mortar subjected to different artificial aging processes (freeze-thaw, thermal cycles, carbonation and chlorides), including measurements of water transport, mechanical properties, reaction products and durability under freeze-thaw and sulfate exposure cycles.Formation of compact silica and C-S-H gel structures decreases porosity and water absorption rate with minimal effect on vapor permeability. Bulk mechanical reinforcement and waterproofing are substantially limited on freeze-thaw aged mortars, whereas surface hardness is barely increased for carbonated mortars. These properties were found to effectively increase the mortar resistance against sulfate and freeze-thaw induced damages. |
| first_indexed | 2024-03-12T01:46:42Z |
| format | Article |
| id | doaj.art-b56696ad7ce64978a1e09f69b39b8791 |
| institution | Directory Open Access Journal |
| issn | 2666-1659 |
| language | English |
| last_indexed | 2024-03-12T01:46:42Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj.art-b56696ad7ce64978a1e09f69b39b87912023-09-09T04:56:27ZengElsevierDevelopments in the Built Environment2666-16592023-10-0115100216Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditionsRafael Zarzuela0Manuel Luna1Giada Gemelli2Jorge Gonzalez-Coneo3Inés García-Lodeiro4M.T. Blanco-Varela5María J. Mosquera6TEP-243 Nanomaterials Group, Department of Physical-Chemistry, Faculty of Science, University of Cadiz, 11510, Puerto Real, Spain; Corresponding author.TEP-243 Nanomaterials Group, Department of Physical-Chemistry, Faculty of Science, University of Cadiz, 11510, Puerto Real, SpainTEP-243 Nanomaterials Group, Department of Physical-Chemistry, Faculty of Science, University of Cadiz, 11510, Puerto Real, SpainTEP-243 Nanomaterials Group, Department of Physical-Chemistry, Faculty of Science, University of Cadiz, 11510, Puerto Real, SpainEduardo Torroja Institute (CSIC), 28033, Madrid, SpainEduardo Torroja Institute (CSIC), 28033, Madrid, SpainTEP-243 Nanomaterials Group, Department of Physical-Chemistry, Faculty of Science, University of Cadiz, 11510, Puerto Real, Spain; Corresponding author.Gradual degradation of cementitious materials by exposure to the environment decreases the lifespan of buildings, increasing maintenance andrepair costs. Surface treatments based on alkoxysilanes may prevent weathering effects and repair onset damages, though little attention is paid to how the physical-chemical alterations caused by weathering affect their performance.This work reports a comprehensive characterization/validation of an alkoxysilane-based protective treatment on a mortar subjected to different artificial aging processes (freeze-thaw, thermal cycles, carbonation and chlorides), including measurements of water transport, mechanical properties, reaction products and durability under freeze-thaw and sulfate exposure cycles.Formation of compact silica and C-S-H gel structures decreases porosity and water absorption rate with minimal effect on vapor permeability. Bulk mechanical reinforcement and waterproofing are substantially limited on freeze-thaw aged mortars, whereas surface hardness is barely increased for carbonated mortars. These properties were found to effectively increase the mortar resistance against sulfate and freeze-thaw induced damages.http://www.sciencedirect.com/science/article/pii/S2666165923000984AlkoxysilaneCementMortarSurface treatmentDurabilityProtection |
| spellingShingle | Rafael Zarzuela Manuel Luna Giada Gemelli Jorge Gonzalez-Coneo Inés García-Lodeiro M.T. Blanco-Varela María J. Mosquera Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions Developments in the Built Environment Alkoxysilane Cement Mortar Surface treatment Durability Protection |
| title | Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| title_full | Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| title_fullStr | Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| title_full_unstemmed | Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| title_short | Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| title_sort | validation of alkoxysilane based protective treatments for increasing service life of cementitious materials under different weathering conditions |
| topic | Alkoxysilane Cement Mortar Surface treatment Durability Protection |
| url | http://www.sciencedirect.com/science/article/pii/S2666165923000984 |
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