Effect of Stone Powder Content on Mechanical Properties of Manufactured Sand Concrete

Fu, Tao; Liang, Junlin; Lan, Yi-fu; Xiao, Yi-peng; Wei, Jianhui

doi:10.1007/s40996-022-00882-1

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…According to references [17,[22][23][24][25][26][27][28], the compressive strength of mechanism sand concrete with a moderate dosage of admixtures (SP, PFA, SF at 10%, 15%, and 5%, respectively) is favorable when a single admixture is used. Consequently, we conducted two sets of rheological property testing experiments.…”

Section: Rheological Propertiesmentioning

confidence: 99%

“…When the content of lime SP increased from 5% to 28%, the setting time of the mortar continuously shortened, and the flowability, flexural and compressive strength, and 120-day contractions showed an increase followed by a decrease, while the permeability was minimally affected by the lime SP content. Fu T et al [ 28 ] used a three-phase composite model to predict the elastic modulus of SP concrete. The slump, expansion, compressive, and splitting strengths of concrete made with manufactured sand increased initially and then decreased with an increase in SP content.…”

Section: Introductionmentioning

confidence: 99%

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Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Gao,

Sun,

et al. 2023

Materials

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Due to the impact of economic and social development on the environment, there is an increasing demand for manufactured sand to replace natural sand as fine aggregate for concrete. At the same time, the effect of admixtures on the rheological properties and compressive strength of concrete is crucial in civil engineering applications. In this study, with the Box–Behnken test model, we analyzed and investigated the impact of a composite admixture of stone powder (SP), pulverized fuel ash (PFA), and silicon fume (SF) on the compressive strength of siliceous manufactured sand concrete using response surface methodology (RSM). At the same time, the rheological properties of the siliceous artificial sand and river sand concrete were analyzed. The prediction of the compressive strength of siliceous artificial sand concrete was developed using multiple regression analysis, the factors of which were SP, PFA, and SF content, and the response value was compressive strength. Furthermore, response surface and contour lines were used to analyze the impact of composite admixtures. It is shown that the compounding of SP, PFA, and SF improve the rheological properties of manufactured sand concrete. For the single factor, SP has the greatest effect on the compressive strength of mechanism sand concrete and SF has the least effect. For compounding, SP and PFA have the most significant effect on the compressive strength of artificial sand shotcrete, and the compounding of PFA and SF have the least effect.

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Section: Rheological Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Gao,

Sun,

et al. 2023

Materials

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“…Tang et al [14], Febin et al [10] and Shen et al [15] reported that for concrete prepared with a C15~C55 grade, at a relatively low RP content (≤ 6%), it may positively correlate with the compressive intensity. Generally, with an increase in RP, the strength and modulus of elasticity decreased [16,17]. Then, Wu et al [18] determined the optimal RP content for axial compressive intensity, flexural intensity, splitting tension and modulus of elasticity for C80 concrete.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Steel Fiber to the Mechanical Property Improvement of C80 Concrete Produced with a High Amount of Artificial Sand Powder

et al. 2023

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Due to the high price of river sand, its shortage and unsustainable extraction from the environment, artificial sand (AS) has been promoted as a fine aggregate for producing concrete. However, it has been acknowledged that a high content of limestone powder (LP), up to 15 wt.%, as a by-product in AS coexists and it has an adverse impact on the mechanical properties of concrete. To compensate for the performance loss of C80 concrete with a high LP content to the applications of concrete on a large scale, this study evaluates the contribution of steel fiber content to the performance improvement of concrete by means of a developed statistical method. Experimental results show that when increasing the LP in concrete over 5%, it can influence axial compression, flexural intensity, splitting tension and the modulus of elasticity, in particular, presenting an obvious decrease in axial compressive intensity, splitting tension and modulus of elasticity. Incorporating steel fibers in such concrete prepared with a high amount of artificial sand powder is a way to compensate for its performance loss. Referring to the experimental results and probability theory, the probability density function of the characteristic value of mechanical characteristic of one type of concrete and the difference between the characteristic values of mechanical characteristics of any two concretes were developed to establish a scientific criterion that can be used to compare the sizes of any two characteristic probability values, which is superior to the comparative approach of arithmetic averages in publications. By adopting this method, the high-strength concrete with a high LP and steel fiber content could be applied in engineering practices from the point of view of its mechanical properties. Meanwhile, the study provides an evaluation method for other scientific research on the size comparison of any two stochastic physical variables.

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A study on the printability of manufactured sand concrete

Zhu,

et al. 2023

Construction and Building Materials

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Effect of Stone Powder Content on Mechanical Properties of Manufactured Sand Concrete

Cited by 7 publications

References 27 publications

Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Research on Compressive Strength of Manufactured Sand Concrete Based on Response Surface Methodology

Contribution of Steel Fiber to the Mechanical Property Improvement of C80 Concrete Produced with a High Amount of Artificial Sand Powder

A study on the printability of manufactured sand concrete

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