Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite

Li, Zhenhua; Wang, Huafeng; He, Shan; Lu, Yang; Wang, Miao

doi:10.1016/j.matlet.2005.08.061

Cited by 325 publications

(115 citation statements)

References 4 publications

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“…Researchers have already perfoemed studies on the application of materials in nano scale and/or pozzolanic materials in self-compacting mortar or concrete with scope to improve mechanical and physical properties (Barbhuiya, 2011;Hou et al, 2012;Madandoust et al, 2015;Mohseni et al, 2015a;2015b;Yang et al, 2015). However, there is limited research concentrated on the cement-based materials properties containing nano-Al 2 O 3 (Nazari and Riahi, 2011b;Li et al, 2006;Oltulu and Sahin, 2013;Barbhuiya et al, 2014). Jalal et al (2012) investigated the effects of micro-and nano-SiO 2 particles on the durability and micro structural of high-performance self-compacting concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting Mortar

Mohseni

Tsavdaridis

2016

American Journal of Engineering and Applied Sciences

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Abstract:In this study the effect of pore structure on the mechanical properties and durability characteristics of Self-Compacting Mortars (SCM) containing nano-Al 2 O 3 (NA) and class F fly ash are investigated. Al 2 O 3 nanoparticles with the maximum size of 15 nm in three different proportions of 1, 3 and 5% of the binder content were utilized to partially replace the cement. The 25% of the cement weight was also replaced by class F fly ash. The pore structure of cement mortars was determined through the Mercury Intrusion Porosimetry (MIP) and Gas Adsorption (BET) methods. The microstructure of the SCMs was evaluated by Scanning Electron Microscopy (SEM). The results indicated a reasonable correlation which was observed between the pore structure and other properties of mortars. The addition of the NA at proportions over 1% led to an increase in the pore volume of specimens by virtue of agglomeration. In overall, it seems that 1% NA can be considered as a suitable replacement regarding the pore structure and hardened properties.

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Section: Introductionmentioning

confidence: 99%

Effect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting Mortar

Mohseni

Tsavdaridis

2016

American Journal of Engineering and Applied Sciences

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“…Nanomaterials such as nanoalumina are found to improve the flexural strength of concrete [17,18]. Titanium and nanosilica enhance abrasion resistance and flexural strength [19,20].…”

Section: Open Access Ojcmmentioning

confidence: 99%

Investigation of Physical Properties of Graphene-Cement Composite for Structural Applications

Sedaghat¹,

Ram²,

Zayed³

et al. 2014

OJCM

117

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The hydration of cement generates heat due to the exothermic nature of the hydration process. Poor heat dissipation in mass concrete results in a temperature gradient between the inner core and the outer surface of the element. High temperature gradients generate tensile stresses that may exceed the tensile strength of concrete thus leading to thermal cracking. The present paper is an attempt to understand the thermal (heat sink property) and microstructural changes in the hydrated graphene-Portland cement composites. Thermal diffusivity and electrical conductivity of the hydrated graphene-cement composite were measured at various graphene to cement ratios. The mass-volume method was implemented to measure the density of the hydrated graphene-cement composite. Particle size distribution of Portland cement was measured by using a laser scattering particle size analyzer. Heat of hydration of Portland cement was assessed by using a TAMAIR isothermal conduction calorimeter. Scanning electron microscopy (SEM) was implemented to study microstructural changes of the hydrated graphene-cement composites. The mineralogy of graphene-cement and the hydrated graphene-cement composites was investigated by using X-ray diffraction. The findings indicate that incorporation of graphene enhances the thermal properties of the hydrated cement indicating a potential for reduction in early age thermal cracking and durability improvement of the concrete structures.

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“…Nano-particles have shown special properties in concrete mix design due to their very small particle size and their high surface area [8]. Nano-materials, including silica nanoparticles, carbon nano-tubes [9], iron nano-particles [10], aluminum nano-particles [11] and nano-montmorillonite [12], have been tested to improve the properties of concrete including nano-silica particles due to their high pozzolan properties [8]. Jo et al (2007) have shown in their experiments that the increase in compressive strength for mortars containing nano-silica is 3 to 12 percent [13].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Compressive Strength of Micro- and Nano-silica Concrete by Statistical Method

Zarehparvar-Shoja

Eskandari‐Naddaf

2017

CivileJournal

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In recent years, the use of nano-particles to improve the properties of concrete has created a new perspective on concrete technology. Studies in this field indicate improved concrete properties and higher strength by adding nano and micro silica particles to concrete mixes. In this regard, 12 mixing designs with different amounts of these admixtures with three types of cement strength classes (525,425,325) and 36 cubic samples (10 × 10 × 10) were designed and tested to measure compressive strength, of which we have only used 6 mixing plans in this research. The purpose of this research is to present a new method for concrete mix design by optimizing principles. Therefore, in this paper, the Taguchi statistical methods and the factorial design of the optimal mixing plan for this type of concrete are used to reduce the number of experiments to predict the optimal composition of the materials. The results obtained from the MINITAB software show that the effect of combined micro-silica and nano-silica on the compressive strength is in one direction and the effect of these two factors is more than cement strength grade of the cement and also the optimal value for micro-silica and nano-silica are estimated to have an optimum amount of micro-silica and nano-silica of 95 and 38 grams, respectively.

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Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite

Cited by 325 publications

References 4 publications

Effect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting Mortar

Effect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting Mortar

Investigation of Physical Properties of Graphene-Cement Composite for Structural Applications

Optimizing Compressive Strength of Micro- and Nano-silica Concrete by Statistical Method

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