Influence of Crystalline Admixtures on the Short-Term Behaviour of Mortars Exposed to Sulphuric Acid
| Autor: | José Miguel Saval, Victoria E. García-Vera, Antonio José Tenza-Abril, Marcos Lanzón |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Civil, Tecnología de Materiales y Territorio (TECMATER), Universidad de Alicante |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Morteros - Construcción
Capillary action 0211 other engineering and technologies 02 engineering and technology lcsh:Technology 021105 building & construction General Materials Science Crystalline admixture Composite material Ingeniería de la Construcción Sulfatación crystalline admixture lcsh:QC120-168.85 Ensayos (propiedades o materiales) 3313.04 Material de Construcción 021001 nanoscience & nanotechnology Sostenibilidad Compressive strength Ultrasonic pulse velocity 3312.12 Ensayo de Materiales 0210 nano-technology lcsh:TK1-9971 Durabilidad 3312.02 Aglomerantes Ambiente agresivo Materials science Material de construcción Sulphuric acid attack sulphuric acid attack Xypex Durability Article chemical exposure lcsh:Microscopy 3312.09 Resistencia de Materiales Cement lcsh:QH201-278.5 Propiedades mecánicas lcsh:T Aditivos (cemento) Penetration (firestop) 3312 Tecnología de Materiales Construcciones Arquitectónicas lcsh:TA1-2040 Chemical exposure durability lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Cementitious Mortar lcsh:Engineering (General). Civil engineering (General) 3305.05 Tecnología del Hormigón |
| Zdroj: | Materials RIARTE Consejo General de la Arquitectura Técnica de España (CGATE) RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) Repositorio Digital de la Universidad Politécnica de Cartagena Fundación Universitaria San Pablo CEU (FUSPCEU) Volume 12 Issue 1 Materials, Vol 12, Iss 1, p 82 (2018) |
| ISSN: | 1996-1944 |
| Popis: | Using durable materials is a sustainable solution for extending the lifetime of constructions. The use of crystalline admixtures makes cementitious materials more durable. They plug pores, capillary tracts and microcracks, blocking the entrance of water due to the formation of crystals that prevent the penetration of liquids. The literature has covered the performance of these admixtures on concrete, but studies on mortars are still scarce. The aim of this study is to investigate the effect of an aggressive environment (sulphuric acid solution&mdash 3 wt%) on mortars produced with different percentages of a crystalline admixture (1%, 1.5% and 2% by weight of cement content). Physical and mechanical properties were studied after immersing the mortars in a H2SO4 solution for 90 days. It was found that, after a 90-day sulphuric acid exposure, mortars with the crystalline admixture showed greater compressive strength than the control mortar, besides exhibiting lower mass loss. However, the crystalline admixture did not produce any significant effect on the capillary water absorption coefficient. In a nonaggressive environment, and in the short term, the crystalline admixture did not have a significant effect on the compressive strength, the capillary water absorption coefficient or the ultrasonic pulse velocity. |
| Databáze: | OpenAIRE |
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