Effect of silica-based nano and micro additions on SCC at early age and on hardened porosity and permeability

Puentes, Javier; Barluenga, Gonzalo; Palomar, Irene

doi:10.1016/j.conbuildmat.2015.02.053

Cited by 32 publications

(12 citation statements)

References 26 publications

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“…When MS was incorporated, the Portlandite crystals size was reduced (5-10 lm) while no Portlandite crystals were found in the ITZ when NS and MC were used. Therefore, the morphology and composition of ITZ depends on both the type and the particle size of AMA [22].…”

Section: Hardened Scc Physical and Mechanical Characterizationmentioning

confidence: 99%

“…Accordingly, the smaller particle size of AMA has been described to improve both nucleation and reactivity during the hydration process [4,7,16,[18][19][20][21][22][23][24]26]. Nevertheless, the presence of MA has been described to limit some of the adverse effects of environmental conditions on the microstructure of cement based pastes (strength reduction or porosity increase) [4,8].…”

Section: Introductionmentioning

confidence: 99%

“…approach to obtain a moderate strength SCC [4,[22][23][24]. The composition and the particle size of MA can be highlighted among the most important variables that can affect the cement hydration process and the packing ability of the binder [4,9,22,25].…”

Section: Introductionmentioning

confidence: 99%

“…Two groups of MA can be used in producing SCC: fillers or non-active additions [5,6,9,[13][14][15] and active mineral additions (AMA), which show potential hydraulicity or pozzolanic activity [7,[16][17][18][19][20][21][22]. A combination of filler and an AMA is an innovative http://dx.doi.org/10.1016/j.conbuildmat.2015.07.072 0950-0618/Ó 2015 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

“…The composition and the particle size of MA can be highlighted among the most important variables that can affect the cement hydration process and the packing ability of the binder [4,9,22,25]. Therefore the Early Age (EA) features and hardened performance of SCC can be improved [3,[5][6][7]9,11,[13][14][15][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Hardened properties and microstructure of SCC with mineral additions

Barluenga

Palomar

Puentes

2015

Construction and Building Materials

Self Cite

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Section: Hardened Scc Physical and Mechanical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hardened properties and microstructure of SCC with mineral additions

Barluenga

Palomar

Puentes

2015

Construction and Building Materials

Self Cite

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New insight into the prediction of strength properties of cementitious mortar containing nano‐ and micro‐silica based on porosity using hybrid artificial intelligence techniques

Kazemi

Eskandari‐Naddaf

Korouzhdeh

2023

Structural Concrete

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Nowadays, the accurate prediction of strength properties of cementitious materials containing nano‐ and micro‐silica (NS–MS) remains an open question because of the highly nonlinear function of its constituents on the porosity. In the present study, a combined framework is developed by integrating ant colony optimization (ACO), particle swarm optimization (PSO), and biogeography‐based optimization (BBO) with the artificial neural network (ANN) to predict compressive and flexural strengths of cement mortar in two different forms of ignoring (ANNII) and considering (ANNIII) the porosity as an input parameter. This procedure is accomplished considering the porosity effect on the strengths and implementing an experimental program containing 32 mixes (960 specimens) with different NS–MS contents at various ages. Macro‐ and micro‐structural analyses showed that NS–MS caused more decreased pore structure, and thus this situation increases strength properties compared to their separate use. Also, MBBO‐MOANNIII results indicated an improvement in convergence speed and model accuracy compared to other models. This improvement is because of considering the porosity.

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Recent developments in utilization of nano silica in self‐compacting concrete: A review

Wang

Yang

Chu

et al. 2023

Structural Concrete

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Self‐compacting concrete (SCC) is a type of flowable, high‐strength and high‐performance concrete in the construction field, which can flow and compact under its own weight. The damage of concrete is often caused by internal microstructural defects. Nano silica (NS) has excellent pozzolanic properties, and with an appropriate content of NS as auxiliary cementing material, it can promote the generation of C‐S‐H gels in addition to serve as internal filler, thus improves the micro‐scale defects in concrete. This paper extracts data from studies published over the last decade which focus on the application of NS in SCC and discusses the similarities and differences between the studies. Ultimately, a systematic review of the physical and chemical characteristics of NS, and the effect of NS on the workability, mechanical and durability properties of SCC is presented. Based on the review, the most common NS content is 0%–6%, where the negative effect of 0%–6% NS on the workability of SCC can be controlled by increasing the dosage of superplasticizer. The NS content of 2%–3% is optimum for improving the mechanical strength and the ability of SCC to resist water permeability, corrosion, acid and sulfate attacks, elevated temperature as well as shrinkage.

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Effect of silica-based nano and micro additions on SCC at early age and on hardened porosity and permeability

Cited by 32 publications

References 26 publications

Hardened properties and microstructure of SCC with mineral additions

Hardened properties and microstructure of SCC with mineral additions

New insight into the prediction of strength properties of cementitious mortar containing nano‐ and micro‐silica based on porosity using hybrid artificial intelligence techniques

Recent developments in utilization of nano silica in self‐compacting concrete: A review

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