01157612

Component

https://doi.org/10.3141/2142-19

http://scholar.google.com...zano&publication_year=2010

The structure of cement derivatives (cement-based materials) is complex and not fully understood. They are formed by self-assembly of different chemical species in a specific way to form basic building blocks (or units); the size of these units is on the order of a few nanometers. After they are formed, these basic units arrange themselves into larger units, still nanometric in size, which constitute the cementitious matrix. The distinctive macroscopic properties of cementitious materials arise from their unique structural arrangement. This paper is an introduction to the results obtained by the Centre for Nanomaterials Applications in Construction over the past 5 years. The approach used in this study is a combination of experimental and numerical (multiscale simulation) techniques. On the one hand, the study shows how the addition of nanosilica particles can modify the mechanical properties of the cement matrix as well as its resistance to the calcium leaching process. On the other hand, the study illustrates how computational modeling is a valuable tool for gaining insight into the complex calcium silicate hydrate nanostructure and for designing improved cementitious materials.

01157601

NANO10-0032

English

pp 127-129

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309142779

Print

Figures (1) ; References (34)

Cement; Concrete; Mechanical properties; Nanostructured materials; Nanotechnology; Simulation

Calcium silicate hydrate; Nanosilica

Materials; I32: Concrete

TRIS, TRB, ATRI

May 27 2010 2:19PM

• American Road Map for Research for Nanotechnology-Based Concrete Materials
• Carbon Nanofiber–Reinforced Cement-Based Materials
• Direct Synthesis of Carbon Nanofibers on Cement Particles
• Distribution of Carbon Nanofibers and Nanotubes in Cementitious Composites
• Enhancement of Reactive Powder Concrete via Nanocement Integration
• Exploratory Investigation of Nanomaterials to Improve Strength and Permeability of Concrete
• Laboratory Assessment of a Self-Healing Cementitious Composite
• Modeling Nanoindentation of Calcium Silicate Hydrate
• Molecular Dynamics Study of Interaction Between Corrosion Inhibitors, Nanoparticles, and Other Minerals in Hydrated Cement
• Molecular Dynamics to Understand the Mechanical Behavior of Cement Paste
• Nanocellulose and Microcellulose Fibers for Concrete
• Nanoengineering Ultra-High-Performance Concrete with Multiwalled Carbon Nanotubes
• Nanotechnology to Manipulate the Aggregate–Cement Paste Bond Effects on Mortar Performance
• New Calcium Silicate Hydrate Network
• New Possibilities and Future Pathways of Nanoporous Thin Film Technology to Improve Concrete Performance
• Performance of Carbon Nanofiber–Cement Composites with a High-Range Water Reducer
• Scanning Transmission X-Ray Microscopic Study of Carbonated Calcium Silicate Hydrate
• Stability of Synthetic Calcium Silicate Hydrate Gels in Presence of Alkalis, Aluminum, and Soluble Silica
• Strength Enhancement of Cement Mortar with Carbon Nanotubes: Early Results and Potential