01157589

Component

https://doi.org/10.3141/2141-04

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

Because of their unique physical and chemical properties, nanoparticles have been gaining increasing attention and have been used in many fields to fabricate new materials with novel functions. If nanoparticles are integrated with cement-based building materials, the new materials might possess some outstanding properties. Ferrocement is a type of thin-wall reinforced concrete commonly constructed of hydraulic cement mortar reinforced with closely spaced layers of continuous and relatively small-sized wire mesh. The low level of technical skill required to make ferrocement and the ready availability of its materials make ferrocement suitable for a wide variety of applications. This study investigates the mechanical properties (compressive and flexural strengths) and microstructural properties (as determined by scanning electron microscopy) of the interfacial transition zone between cement pastes and aggregates of mortars applicable for the casting of thin ferrocement elements combining with nanosilica. Study parameters include the ratio of nanosilica to cement in ordinary portland cement mortar mixtures (including 1%, 2%, and 3%) and the water-to-binder ratio (including 0.35 and 0.4). The results show that cement mortars containing nanoparticles have a reasonably higher strength and denser interfacial transition zone than do ordinary portland cement ferrocement mortars, while the flowability of mortars with and without nanoparticles is considered equal.

01157583

NANO10-0059

English

pp 15-20

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309142762

Print

Figures (6) ; References (34) ; Tables (3)

Cement mortars; Compressive strength; Ferrocement; Flexural strength; Mechanical properties; Microstructure; Nanostructured materials

Flowability; Interfacial transition zone; Nano-silicon dioxide; Nanosilica

Materials; I32: Concrete

TRIS, TRB

May 25 2010 11:20AM

• Atomic Force Acoustic Microscopy to Measure Nanoscale Mechanical Properties of Cement Pastes
• Atomic Force Microscopy Examinations of Mortar Made by Using Water-Filled Lightweight Aggregate
• Comparative Study of the Effects of Microsilica and Nanosilica in Concrete
• Homogenization Model Examining the Effect of Nanosilica on Concrete Strength and Stiffness
• Influence of Additions of Anatase TiO2 Nanoparticles on Early-Age Properties of Cement-Based Materials
• Influence of Micro- and Nanoclays on Fresh State of Concrete
• Micro- and Nanoscale Characterization of Effect of Interfacial Transition Zone on Tensile Creep of Ultra-High-Performance Concrete
• Nanoindentation of Alkali-Activated Fly Ash
• Nanostructure and Microstructure of Cement Concrete Incorporating Multicementitious Composites
• Nanotechnology: New Tools to Address Old Problems
• Observation of Cement Paste Microstructure Evolution
• Performance of Cement Systems with Nano-SiO2 Particles Produced by Using the Sol–Gel Method
• Photocatalytic Properties of Cement-Based Plasters and Paints Containing Mineral Pigments
• Seeding Effect of Nano-CaCO3 on the Hydration of Tricalcium Silicate
• Small Changes Can Make a Great Difference
• The Fresh State: From Macroscale to Microscale to Nanoscale