A5088475307- Concrete and Cement Materials Research
- Recycled Aggregate Concrete Performance
- Innovative concrete reinforcement materials
- Magnesium Oxide Properties and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- Semiconductor materials and interfaces
- Nanowire Synthesis and Applications
- Innovations in Concrete and Construction Materials
- Historical and Linguistic Studies
- Building materials and conservation
- Biblical Studies and Interpretation
- Concrete Properties and Behavior
- Concrete Corrosion and Durability
- BIM and Construction Integration
- Molecular Junctions and Nanostructures
- Archaeology and Historical Studies
- Advanced ceramic materials synthesis
- Advancements in Semiconductor Devices and Circuit Design
- Hygrothermal properties of building materials
- Advanced Battery Materials and Technologies
- Glass properties and applications
- Advanced materials and composites
- Mesoporous Materials and Catalysis
- Graphene research and applications
- Smart Materials for Construction
Instituto de Ciencias de La Construcción Eduardo Torroja
2021-2023
Consejo Superior de Investigaciones Científicas
1999-2023
Shenzhen Institute of Information Technology
2017-2021
Shenzhen University
2017-2021
Harbin Institute of Technology
2017-2020
Material Physics Center
2013-2015
Universidad Politécnica de Madrid
2012
Dispersion of carbon nanotubes (CNTs) is a challenge for their application in the resulting matrixes. The present study conducted comparison investigation effect four surfactants: Alkylphenol polyoxyethylene ether (APEO), Silane modified polycarboxylate (Silane-PCE), I-Cationic (I-C-PCE), and II-Cationic (II-C-PCE) on dispersion hydroxyl functionalized multi-walled (MWCNTs-OH). Among surfactants, APEO II-C-PCE provide best worst CNTs water, respectively. MWCNTs-OH has been characterized by...
This work analyses the influence of fine concrete fractions (<5 mm) different natures —calcareous (HcG) and siliceous (HsT)—obtained from construction demolition waste (C&DW) on behaviour blended cement pastes with partial replacements between 5 10%. The two C&DW were characterised by instrumental techniques. Subsequently, their lime-fixing capacity physico-mechanical properties analysed. Lastly, environmental benefits reusing these wastes in manufacture future eco-efficient...
The last volcanic eruption on the island of La Palma (Spain) took place in 2021. Significant activity started September that year with vigorous emission gases and ash lasted for three months. It is estimated Cumbre Vieja volcano emitted more than ten million cubic meters comprising pyroclastic materials like those found many parts world. Some these deposits are untapped, despite their potential construction industry applications. Since chemical composition mineralogy depends type magma from...
Abstract The dynamics of water confined in cement materials is still a matter debate spite the fact that has major influence on properties such as durability and performance. In this study, we have investigated Portland (OPC) at different curing ages (3 weeks 4 years after preparation) three water-to-cement ratios ( w / c , 0.3, 0.4 0.5). Using broadband dielectric spectroscopy, distinguish four due to molecules pores sizes cements. Here show how modified by evolution microstructure...
Tricalcium aluminate (C3A) is the most reactive component of Portland cement and its hydration has an important impact on workability early strength concrete. Recently, nanomaterials such as nano-silica (nano-SiO2) have attracted much attention in cement-based materials because pozzolanic reactivity pore-filling effect. However, influence C3A needs to be well understood. In this study, kinetics mixed with different percentages nano-SiO2 were studied compared pure C3A. The products examined...
The serious technical and environmental problems associated with the management of construction demolition wastes (CDW) have led to a worldwide growing interest in recycling that waste stream as secondary raw material for sustainable building applications. This research work investigates physical mechanical behaviour mortars made ternary cements containing 7% binary recycled CDW mixture comprising fine fraction (<5 mm) concrete (both siliceous calcareous nature) combination laminar glass...
In this study, the rotational dynamics of hydration water confined in calcium-silicate-hydrate (C-S-H) gel with a content 22 wt.% was studied by broadband dielectric spectroscopy broad temperature (110–300 K) and frequency (10−1–108 Hz) ranges. The C-S-H used as 3D confining system for investigating possible existence fragile-to-strong transition around 220 K. Such observed at K previous study [Y. Zhang, M. Lagi, F. Ridi, E. Fratini, P. Baglioni, Mamontov S. H. Chen, J. Phys.: Condens....
Confined water in the slit mesopores of mineral tobermorite provides an excellent model system for analyzing dynamic properties confined cement-like materials. In this work, we use broadband dielectric spectroscopy (BDS) to analyze entrapped crystalline material. Two samples, one natural and synthetic, were analyzed, despite their similar structure, motion zeolitic cavity displays considerably different behavior. The dynamics splits into two behaviors depending on chemical nature otherwise...
This paper analyzes manufacture of a new eco-cement (reduced CO2 footprint and LC3 clinker content) by replacing natural limestone with fine concrete demolition waste (CDWH). The ternary cement's content was partially replaced binary pozzolanic admixture (10%, 20%, 30% proportions; 1:1 weight) composed CDWH commercial metakaolin (MK). Results show the meets current standards' chemical physical requirements. synergy additives —CDWH MK— is comparable to silica fume, as reflected in mortars'...
Construction and demolition waste (CDW) currently constitutes a stream with growing potential use as secondary raw material in the manufacture of eco-cements that offer smaller carbon footprints less clinker content than conventional cements. This study analyzes physical mechanical properties two different cement types, ordinary Portland (OPC) calcium sulfoaluminate (CSA) cement, synergy between them. These cements are manufactured types CDW (fine fractions concrete, glass gypsum) intended...
In this work we have studied the dynamics of water confined in C-S-H gel and synthesized with addition nano-silica (SiO2) aminopropyl (-(CH2)3-NH2,) functionalized silica nanoparticles. Structural characterizations showed that nanoparticles increases average length silicate chains gel. The microstructure without is altered it can be related to a different porous structure these materials.
El manuscrito M1 (Biblioteca de la Universidad Complutense Madrid) está siendo estudiado actualmente por el equipo Biblia Hebrea del Instituto Filología CSIC en Madrid. Intentamos realizar edición masora Pentateuco los próximos tres años. Al final presenta cuatro páginas, escritas a columnas cuarenta y dos líneas cada una. Este apéndice contiene, entre otras cosas, un recuento total parašiyyôṯ, sedarîm, versículos, palabras letras libro Pentateuco, así como número exacto diferencias Ben Ašer...
This paper reports the use of siliceous and calcareous construction demolition waste (CDW) laminated glass in manufacture eco-friendly calcium sulfoaluminate-based cement clinkers. The Bogue method is applied to mixtures establish their initial oxide content before performing clinkerization at 1250 °C. Rietveld used quantitatively determine phases formed 12 clinkersas well as microstructure characterization using FTIR, SEM techniques. Ye'elimite, larnite, anhydrite, brediggite, gehlenite are...