Destructive and Non-Destructive Testing of the Performance of Copper Slag Fiber-Reinforced Concrete

Chakrawarthi, Vijayaprabha; Dharmar, Brindha; Avudaiappan, Siva; Amran, Mugahed; Flores, Erick Saavedra; Alam, Mohammad Ayaz; Fediuk, Roman; Vatin, Nikolai; Rashid, Raizal Saifulnaz Muhammad

doi:10.3390/ma15134536

Cited by 19 publications

(9 citation statements)

References 81 publications

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“…Ashraf A.M. Fadiel et al utilized industrial waste materials as partial substitutes for concrete raw materials and tested the compressive strength of the concrete at various ages after formation. The test results were found to be satisfactory [18,19]. Some researchers have employed alternative testing methods to assess concrete structures.…”

Section: Introductionmentioning

confidence: 93%

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

Chen,

Jin,

Dong

et al. 2023

Buildings

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Enhancing the assessment of compressive strength and the efficiency of rebound hammers in non-destructive testing for high-strength concrete is an urgent issue in construction engineering. This study involved C50 to C90 high-strength concrete specimens, utilizing rebound hammers with nominal energies of 4.5 J and 5.5 J, along with a compression machine. A regression analysis was performed on the compressive strength and rebound values, resulting in linear, polynomial, power, exponential, and logarithmic equations for two different types of rebound hammers. Additionally, the precision of rebound hammers with different nominal energies and the representativeness of various rebound representative values in the measurement area were investigated. The experimental results indicate that the precision of the regionally representative strength curve in Xinjiang meets national specifications. The 4.5 J nominal energy rebound hammer exhibited a higher testing accuracy. When reducing the high-strength concrete measurement area’s rebound representative values from 16 to 14, 12, and 10, the coefficients of variation for the different rebound representative values were mostly below 10%. Within high-strength concrete structures, the strength curve formula derived from rebound representative value 16 is equally applicable to 14, 12, and 10. In practical engineering applications, prioritizing 10 ensures testing accuracy while reducing on-site testing efforts. The outcomes of this experiment establish a foundation for the development and promotion of rebound method-testing technology for high-strength concrete in Xinjiang.

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Section: Introductionmentioning

confidence: 93%

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

Chen,

Jin,

Dong

et al. 2023

Buildings

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“…For rice husk ash mortars reinforced with sugarcane bagasse, a drop in dynamic modulus of elasticity is observed with increasing sugarcane bagasse in the mortar. This is related to the increase of pores with the increase of sugarcane bagasse in the mortar [28]; which decreases the propagation velocity of sound waves in the mortar [26,34]. The decrease in sound wave propagation velocity directly translates into the decrease in dynamic modulus of elasticity as shown in equation (eq1).…”

Section: Dynamic Modulus Of Elasticitymentioning

confidence: 99%

“…The analysis of this figure allows us to notice a variation of the dynamic modulus of elasticity from 3.29GPa for the reference mortar to 4.10GPa for the RHA5 mortar, which corresponds to an improvement of the material compactness. This result is related to the filling of voids in the material, thus promoting faster propagation of sound waves [26,34].…”

Section: Dynamic Modulus Of Elasticitymentioning

confidence: 99%

Evaluation of the dynamic modulus of elasticity of a pozzolanic mortar of rice husk ash reinforced with sugarcane bagasse

DATCHOSSA¹,

DOKO²,

OLODO³

2023

World J. Adv. Res. Rev.

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In the last decades, many works are going in the direction of valorization of vegetable biomass. The aim of the present work is to determine the dynamic modulus of elasticity of a cementitious matrix composite with rice husk ash pozzolan reinforced with sugarcane bagasse. To do this, we formulated mortars in which we varied the volume fraction of sugarcane bagasse and kept 10% of rice husk ash as a cement replacement. The sugarcane bagasse fractions of 0%, 3%, 6% and 10% yielded the mortars denoted RHA10, R10SB3, R10SB6, R10SB10, respectively. We have experimentally determined the density, the porosity of the different mortars obtained. Then, we determined by ultrasound test the speed of propagation of sound waves in the different mortars before calculating their dynamic moduli of elasticity. The results of the study show that the porosity, density, and dynamic modulus of elasticity of RHA10 mortars decreases with the increase of the volume fraction of sugarcane bagasse. The dynamic moduli of RHA10, R10SB3, R10SB6 and R10SB10 are 3.25GPa, 3.14GPa, 2.56GPa, 1.71GPa respectively with a porosity-dynamic modulus correlation R² of 0.94.

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“…The annual amount of waste generated in developed countries is up to 15 tons per person per year, up to 50-100 tons in countries with raw material economies [21], and about 60 tons in Kazakhstan [24]. The main share of waste in Kazakhstan falls on industrial areas and is represented by overburden rock from the mining industry, tailings from enrichment processes, and waste from heat electric power plants (TPP), in particular ash and slag [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical Study of the Possibility of Utilization of Coal Ash by Processing as Secondary Raw Materials to Obtain a Composite Cement Clinker

Muratov,

Kolesnikov,

Shapalov

et al. 2023

J. Compos. Sci.

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A significant amount of energy waste has accumulated in the world, in particular, large-tonnage fine ash from central heating stations (coal ash), which can negatively affect the natural environment and the health of the population. However, at the same time, due to its chemical composition, this waste can be disposed of by complex processing as a secondary mineral component, thus reducing the anthropogenic load on the natural environment. This article presents a physico-chemical study of coal ash for its further use as a secondary mineral component, in particular, a component of a raw mixture with limestone to produce a composite Portland cement clinker. Coal ash and limestone were subjected to granulometric, chemical, differential thermal, scanning electron microscopy, elemental chemical and X-ray structural analyses, as well as modeling to assess the possibility of optimizing the raw material and mineralogical composition of the composite Portland cement clinker. During the research, the chemical and elemental compositions of the coal ash and limestone were determined and SEM images of the coal ash were obtained; it was found that 68.04% of the coal ash was represented by the fraction with granules <0.16 mm. Using X-ray diffraction analysis, the main limestone minerals were identified, which were represented by calcite and silica. Based on the results of mathematical modeling of the utilization of coal ash from a thermal power plant by processing with limestone, a two-component raw material mixture containing 23.66% fly ash and 76.34% limestone was optimized and the optimal mineralogical composition of the composite Portland cement clinker was determined. Utilization of coal ash by processing as a secondary raw material can be carried out at almost any ash storage facility anywhere in the world, taking into account the chemical composition of the processed ash. It was found that the replacement of natural raw materials with man-made raw materials in the form of coal ash contributed to a reduction in fuel consumption for firing (kg of conventional fuel) by 13.76% and a decrease in the thermal effect of clinker formation by 5.063%.

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Destructive and Non-Destructive Testing of the Performance of Copper Slag Fiber-Reinforced Concrete

Cited by 19 publications

References 81 publications

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region

Evaluation of the dynamic modulus of elasticity of a pozzolanic mortar of rice husk ash reinforced with sugarcane bagasse

Physico-Chemical Study of the Possibility of Utilization of Coal Ash by Processing as Secondary Raw Materials to Obtain a Composite Cement Clinker

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