The relationship between compressive strength and flexural strength of pavement geopolymer grouting material

Zhang, L; Han, Xiao; Ge, Jinjin; Wang, C H

doi:10.1088/1757-899x/292/1/012114

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…The bend strengths were multiplied by 5 in order to convert them to equivalent compressive strengths based on comparisons between concrete compressive and bend strengths. 33,34 Figure 11 compares the equivalent compressive strength of the UHTC bars with the previously published results. 12,16,17,20 The average of the Archimedes bulk density and the geometric bulk density was used to determine the relative density of the test bars as discussed in the Density and Porosity section above.…”

Section: Mechanical Propertiesmentioning

confidence: 76%

“…Ceramics are well known to be stronger in compression than in tension and bending strengths lie between these two extremes. The bend strengths were multiplied by 5 in order to convert them to equivalent compressive strengths based on comparisons between concrete compressive and bend strengths 33,34 . Figure 11 compares the equivalent compressive strength of the UHTC bars with the previously published results 12,16,17,20 .…”

Section: Resultsmentioning

confidence: 99%

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Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)

et al. 2021

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An approach to producing hierarchical multi-scale porous ultra-high temperature ceramics (zirconium diboride, ZrB 2 ) using 3D printing has been developed. Porous ceramic filaments can be 3D printed via Direct Ink Writing (DIW) (paste extrusion).Millimeter scale porosity is created by the 3D printed scaffold filaments. We introduce 20-micron-scale porosity into the scaffold filaments with the addition of oil to produce capillary suspension paste inks. Micron-scale porosity is also developed by partial sintering of the ceramic. The rheological (flow) properties of the capillary suspension paste inks suitable for printing by extrusion through the needle of the 3D printer have been characterized. The samples are strengthened by partial sintering at high temperatures. Complex-shaped components can be printed and sintered into crack-free components, but distortion during drying and sintering lead to poor shape and tolerance control. X-ray tomography is used to characterize the internal structure of the printed components. Printed test bars measured in 4-point bend testing exhibit high strength to density ratio. Such materials potentially have applications as insulation near very high-temperature surfaces in aerospace applications. K E Y W O R D Sultra-high temperature ceramics, colloids, processing, strength T A B L E 3 Density and porosity data of test bars and complex shapes Sample Archimedes Apparent Density Archimedes Apparent Density % Archimedes Bulk Density Archimedes Bulk Density % Mass and Volume Density Mass and Volume Density % Average Bulk and Geometric %

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Section: Mechanical Propertiesmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)

et al. 2021

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“…In the present study, the compressive strength of the red clay-based geopolymer was not measured because the flexural strength might give a more direct measure to the mechanical property of the geopolymer material. Previous study reported that the flexural strength is about 14 to 22% of the compressive strength of the materials (Zhang et al, 2018). Hence, upon knowing the flexural strength, the compressive strength of the materials can be approximated without actually measuring it.…”

Section: Strength Of Solidified Geopolymer Pastementioning

confidence: 99%

Fabrication of a Wall-Panel Board Using Rice Husk and Red Clay-Based Geopolymer

Raki-in,

Villagracia, Jr.,

Menchavez

2021

MJST

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This study fabricated a wall-panel board made of rice husk and red clay-based geopolymer. The geopolymer paste was studied at varying molarities of alkali-activator solution with a fixed ratio of Na2SiO3/NaOH at 2.5. A calcined red clay was used as the aluminosilicate precursor at a mass ratio of 1:1 to the activator solution. The geopolymer paste was heated at 80 °C for 12 h in a conventional oven and then aged for seven days at room condition. It was found out that 12 molars of NaOH in geopolymer paste provided the maximum flexural strength of 5.48 MPa. The rice husk was then introduced to the geopolymer paste at varying amounts from 10 to 20 wt% based on the mass of the paste. It was observed that the flexural strength and bulk density of the solidified composites decreased with an increasing amount of rice husks. Correspondingly, the measured flexural strengths varied from 4.21 to 3.13 MPa, whereas the bulk densities measured from 1.84 to 1.51 g/cm3. It was further observed that the addition of rice husks at 15 wt% in the geopolymer composite exhibited a lower thermal conductivity of 0.297 W/m-°K. The increased addition of rice husks above such amount negligibly decreased the thermal conductivity of the geopolymer composite. Lastly, the fabricated wall-panel board using the rice husk and red clay-based geopolymer is a promising lightweight and insulating material in the construction industry.

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“…Numerous researchers reported the empirical relationship in the form of fr =bfc' n where n and b are constants [24,25]. The square root function is advised mostly by all codes of practice to predict flexural strength from compressive strength as it gives more accurate values of predicted flexural strength [26][27][28][29][30][31]. In general, 10-15 percent of concrete's compressive strength is characterized as flexural strength roughly.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Empirical Relation between Compressive and Flexural Strength of Concrete Partially Using Alccofine and Nano-Silica

Ashwini

Rao

2021

AMR

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In this paper, the flexural strength of concrete using alccofine and nano-silica was investigated experimentally and analytically. 15% alccofine and 3% nano-silica by weight of cement was used as a binary and ternary blend in three concrete grades M40, M50, and M60. Compressive strength and flexural strength were obtained experimentally by curing the specimens in water for 28 days. The empirical equation between compressive strength and flexural strength in the form of fr =bfc’n was obtained using regression analysis. The proposed empirical relation was compared with relations given by a code of practices and the relations reported by other researchers for predicting flexural strength using the compressive strength of concrete. The accuracy of the proposed empirical relation was validated using various statistical equations. From the experimental results, it was found that the cubic compressive strength and flexural strength of ternary blended concrete mixes using alccofine and nano-silica was 20 to 29% and 32 to 39 % higher compared to the control mixes. From the values of statistical equations, the proposed relation was found accurate. It showed less error compared to other relations and can be used to determine flexural strength results based on compressive strength data.

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The relationship between compressive strength and flexural strength of pavement geopolymer grouting material

Cited by 5 publications

References 4 publications

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)

Fabrication of a Wall-Panel Board Using Rice Husk and Red Clay-Based Geopolymer

Evaluation of Empirical Relation between Compressive and Flexural Strength of Concrete Partially Using Alccofine and Nano-Silica

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The relationship between compressive strength and flexural strength of pavement geopolymer grouting material

Cited by 5 publications

References 4 publications

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB2)

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB2)

Fabrication of a Wall-Panel Board Using Rice Husk and Red Clay-Based Geopolymer

Evaluation of Empirical Relation between Compressive and Flexural Strength of Concrete Partially Using Alccofine and Nano-Silica

Contact Info

Product

Resources

About

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)

Direct ink writing of hierarchical porous ultra‐high temperature ceramics (ZrB₂)