Mechanical properties and durability performance of fly ash based mortar containing nano- and micro-silica additives

Seifan, Mostafa; Mendoza, Shaira; Berenjian, Aydin

doi:10.1016/j.conbuildmat.2020.119121

Cited by 77 publications

(27 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They reported that nano-CaCO 3 can clearly promote the early stage of hydration and also improve the modulus of elasticity. The investigation by Seifan et al [ 17 ] reported that the addition of 5% nano-silica increased the 28-day compressive strength of geopolymer mortar containing different amounts of fly ash. Shaikh et al [ 18 ] studied the addition of nano-silica on the performance of high-volume fly ash mortar, and the test results showed that the addition of 2% nano-silica was the optimal content in the high-volume fly ash mortar wherein it resulted in the highest compressive strength both at an early and later age.…”

Section: Introductionmentioning

confidence: 99%

Multi-Response Optimization of Ultrafine Cement-Based Slurry Using the Taguchi-Grey Relational Analysis Method

Zhang

Qiao

et al. 2020

Materials

View full text Add to dashboard Cite

The grouting technique is an important method in underground engineering that prevents water seepage and reinforces fractured rock mass. In this research, ultrafine cement-based grouting material, including ultrafine cement (UC), ultrafine fly ash (UFA), polycarboxylate superplasticizer (SP), colloidal nanosilica (CNS), sodium sulfate solution (SS) and water, was developed. The flow time, viscosity, bleeding, setting time and uniaxial compressive strength of the UC-based slurry were measured by orthogonal experiments, and the optimal mix proportion of the UC-based slurry was obtained based on the Taguchi-Grey relational analysis method. Microstructure analysis of the UC-based slurry was conducted using scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) tests. The results showed that the Bingham model could provide a satisfactory description of the rheological properties of the UC-based slurry. The addition of CNS and SS could promote the hydration of the UC-based slurry and improve the microstructure of the hardened slurry, thereby increasing the strength of the hardened slurry. The optimum ratio for the UC-based slurry was water/solid (W/S) ratio of 1.0, and the contents of UFA, SP, CNS and SS by mass of UC were 40%, 0.2%, 4% and 4%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-Response Optimization of Ultrafine Cement-Based Slurry Using the Taguchi-Grey Relational Analysis Method

Zhang

Qiao

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…This suggests that NS and micro silica can improve the compressive strength when used at lower proportions and subsequently decrease the compressive strength when increasing their amounts. Overall, the addition of NS appeared to improve the compressive strength better than the micro silica, where a relatively higher compressive strength of 15.2 MPa was achieved with 5% NS [ 169 ].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“… ( a ) Compressive strength in the presence of micro and nano silica particles [ 169 ]; ( b ) Compressive strength percentage increment for cement paste [ 82 , 125 , 126 , 127 , 128 , 129 , 130 ]; ( c ) Compressive strength percentage increment for cement mortar [ 170 , 171 , 172 , 173 , 174 , 175 , 176 , 177 , 178 , 179 , 180 ]. …”

Section: Figurementioning

confidence: 99%

An Overview on the Rheology, Mechanical Properties, Durability, 3D Printing, and Microstructural Performance of Nanomaterials in Cementitious Composites

Song

Xin-le

2021

Materials

View full text Add to dashboard Cite

The most active research area is nanotechnology in cementitious composites, which has a wide range of applications and has achieved popularity over the last three decades. Nanoparticles (NPs) have emerged as possible materials to be used in the field of civil engineering. Previous research has concentrated on evaluating the effect of different NPs in cementitious materials to alter material characteristics. In order to provide a broad understanding of how nanomaterials (NMs) can be used, this paper critically evaluates previous research on the influence of rheology, mechanical properties, durability, 3D printing, and microstructural performance on cementitious materials. The flow properties of fresh cementitious composites can be measured using rheology and slump. Mechanical properties such as compressive, flexural, and split tensile strength reveal hardened properties. The necessary tests for determining a NM’s durability in concrete are shrinkage, pore structure and porosity, and permeability. The advent of modern 3D printing technologies is suitable for structural printing, such as contour crafting and binder jetting. Three-dimensional (3D) printing has opened up new avenues for the building and construction industry to become more digital. Regardless of the material science, a range of problems must be tackled, including developing smart cementitious composites suitable for 3D structural printing. According to the scanning electron microscopy results, the addition of NMs to cementitious materials results in a denser and improved microstructure with more hydration products. This paper provides valuable information and details about the rheology, mechanical properties, durability, 3D printing, and microstructural performance of cementitious materials with NMs and encourages further research.

show abstract

“…The positive effect of only 2% NS on the strength is more than 10% MS. (2017) reported that the carbonation resistance of mortar containing 2% NS was much higher than that of 10% MS (Li et al 2017). Seifan et al (2020) emphasized that NS is more promising than MS in improving mechanical properties (Seifan et al 2020). As the CT substitution amount increases in the mixtures, the compressive strength decreases on the 2nd and 7th days.…”

Section: Characterization Of Ctmentioning

confidence: 99%

“…This situation can be explained by the higher SiO 2 content of NS and smaller particle size than MS. It is also known from the literature that NS substitution increases the compressive strength(Garg et al 2020;Seifan et al 2020). NS is more effective in pozzolanic reaction with CSH gel than MS(Garg et al 2020).…”

mentioning

confidence: 92%

Characterization of Copper Tailings In Murgul Copper Plant (Artvin/Turkey) And Utilization Potential In Cement Mortar With Nano And Micro Silica

Kara

2021

Preprint

View full text Add to dashboard Cite

Due to the increasing demand for copper day by day, copper tailings (CT) are the wastes that mining and human-induced activities caused have become a problem all over the world due to the increasing demand for copper. This study evaluates the effect of using CT together with nano silica (NS) and micro silica (MS) in mortars as a partial substitution for cement on mechanical strength properties. Physical, morphological, chemical, mineralogical thermo gravimetric analyzes of CT have been made. In addition, heavy metal concentrations were determined. The mechanical features of the mortars produced by replacing by weight with different proportions of (5%, 10%, 15%) CT, 2% NS and 10% MS cement were determined. As a result, it has been observed that the sum of SiO2, Al2O3 and Fe2O3 of the CT, which has a mostly crystalline structure, is 91.40% and its ignition loss is 4.04%. An improvement in compressive strength (compared to the reference mixture) was observed with the use of 5% CT. Up to 10% of CT has provided standard compressive strength values in both NS and MS combinations.

show abstract

Mechanical properties and durability performance of fly ash based mortar containing nano- and micro-silica additives

Cited by 77 publications

References 45 publications

Multi-Response Optimization of Ultrafine Cement-Based Slurry Using the Taguchi-Grey Relational Analysis Method

Multi-Response Optimization of Ultrafine Cement-Based Slurry Using the Taguchi-Grey Relational Analysis Method

An Overview on the Rheology, Mechanical Properties, Durability, 3D Printing, and Microstructural Performance of Nanomaterials in Cementitious Composites

Characterization of Copper Tailings In Murgul Copper Plant (Artvin/Turkey) And Utilization Potential In Cement Mortar With Nano And Micro Silica

Contact Info

Product

Resources

About