The Optimization of Mix Proportion Design for SCC: Experimental Study and Grey Relational Analysis

Ding, Xinxin; Zhao, Mingshuang; Xue, Qunji; Wang, Yupu; Ru, Yijie

doi:10.3390/ma15041305

Cited by 15 publications

(6 citation statements)

References 29 publications

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“…GRA is a kind of grey system analysis method that measures the correlation of factors based on the proximity of the shapes of their series curves to describe the size, strength, and order of the factors [26]. In this research, GRA was carried out to further ascertain the spectrum‐effect relationship.…”

Section: Resultsmentioning

confidence: 99%

Pancreatic lipase and alpha‐glucosidase inhibitors screening from Schisandra chinensis based on spectrum‐effect relationship and ultra‐high‐performance liquid chromatography‐tandem mass spectrometry

Wan

Chen

2022

J of Separation Science

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As a traditional Chinese medicine, Schisandra chinensis has a potential weight‐loss effect by delaying carbohydrate absorption and improving lipid metabolic disorders. However, its active components are still unclear and require in‐depth research. In this study, the active components of Schisandra chinensis responsible for pancreatic lipase and alpha‐glucosidase inhibitory activity were screened and identified based on a spectrum‐effect relationship study in combination with ultra‐performance liquid chromatography‐tandem mass spectrometry analysis. The ultra‐high‐performance liquid chromatography fingerprints of 17 batches of Schisandra chinensis were established, and 14 common peaks were specified by similarity analysis. The half‐maximal inhibition concentration values for pancreatic lipase and alpha‐glucosidase inhibition were separately measured by enzymatic reactions. Using multivariate statistical methods including principal component analysis, partial least square analysis, and grey relational analysis, the correlation models between the peak areas of 14 common peaks and half‐maximal inhibition concentration values were constructed, and the chromatographic peaks making a great contribution to efficacy were screened out. Peak1, Peak2, Peak4, Peak6, Peak9, Peak10, Peak11, and Peak13 were responsible for alpha‐glucosidase inhibitory activity, while Peak1, Peak4, Peak6, Peak9, Peak10, and Peak11 for pancreatic lipase inhibitory activity. Finally, the 70% ethanol extracts of Schisandra chinensis were characterized by ultra‐high‐performance liquid chromatography‐tandem mass spectrometry analysis, and 14 lignans were identified to further elucidate the active constituents of Schisandra chinensis. The positive results suggested the proposed strategy is simple and effective to screen active components from complex medicinal plants.

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Section: Resultsmentioning

confidence: 99%

Pancreatic lipase and alpha‐glucosidase inhibitors screening from Schisandra chinensis based on spectrum‐effect relationship and ultra‐high‐performance liquid chromatography‐tandem mass spectrometry

Wan

Chen

2022

J of Separation Science

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“…With the selected parameters, the mix proportion of the UNC was designed using the absolute volume method, which was applied for the self-compacting concrete [30,31].…”

Section: Test Methodsmentioning

confidence: 99%

An Orthogonal Test Study on the Preparation of Self-Compacting Underwater Non-Dispersible Concrete

Geng,

Wang,

et al. 2023

Materials

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To ensure a limited washout loss rate and the self-compaction of underwater concrete, the mix proportion design of underwater non-dispersible concrete is a key technology that has not been completely mastered. In view of this aspect, an orthogonal test study was carried out in this paper on the workability, washout resistance, and compressive strength of underwater non-dispersible concrete. Six factors with five levels were considered, which included the water/binder ratio, the sand ratio, the maximum particle size of the coarse aggregate, the content of the dispersion resistance agent, the content of superplasticizer, and the dosage of fly ash. Using a range and variance analysis, the sensitivity and significance of these factors were analyzed on the slump and slump-flow, the flow time, the washout loss rate, the pH value, and the compressive strength at the curing ages of 7 days and 28 days. The results indicated that the water/binder ratio and the content of the dispersion resistance agent were strong in terms of their sensitivity and significance on the workability and washout resistance, and the water/binder ratio and the dosage of fly ash were strong in terms of their sensitivity and significance on the compressive strength. With the joint fitness of the test results, formulas for predicting the slump-flow, washout loss rate, and compressive strength of underwater non-dispersible concrete were proposed considering the main impact factors.

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“…(1) Construction of the AHM attribute judgment matrix. The elements of the AHM attribute judgment matrix Q m can be obtained by the conversion of the scale b ij in the HAP [40,41]. Table 1 shows the meanings of scales 1 to 9 in AHP, and the conversion formula is presented by Formula (5).…”

Section: Ahm Subjective Weights Based On Binary Semanticsmentioning

confidence: 99%

Safety-Risk Assessment for TBM Construction of Hydraulic Tunnel Based on Fuzzy Evidence Reasoning

Zhang

Wang

et al. 2022

Processes

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Due to multiple factors influencing the construction safety of TBM hydraulic tunnels, risk assessment is a critical point of a construction management plan to avoid possible risks. In this paper, a safety-risk evaluation index system of TBM construction for hydraulic tunnels is built based on the identification and analysis of possible sources of risk in techniques, geologic, equipment, management, and accidents. Considering the influence of factors such as the experience level and the expertise of decision makers, a combination assignment method of index weights is proposed based on binary semantics. On the basis of a fuzzy normal distribution used as the subordinate function distribution of fuzzy evaluation levels, the subordinate function distribution of fuzzy evaluation levels under multi-level intersection situations is introduced, and a comprehensive evaluation model of safety risks for TBM tunnel construction is built. The validity and practicality of the evaluation model is examined with the combination of a long-distance water conveyance tunnel project. Results show that the construction safety-risk of the TBM hydraulic tunnel project belongs to the middle-high level, and the safety accident risk belongs to the low level. The study provides guidance of evaluation and control of risks for this tunneling construction being successfully completed.

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The Optimization of Mix Proportion Design for SCC: Experimental Study and Grey Relational Analysis

Cited by 15 publications

References 29 publications

Pancreatic lipase and alpha‐glucosidase inhibitors screening from Schisandra chinensis based on spectrum‐effect relationship and ultra‐high‐performance liquid chromatography‐tandem mass spectrometry

Pancreatic lipase and alpha‐glucosidase inhibitors screening from Schisandra chinensis based on spectrum‐effect relationship and ultra‐high‐performance liquid chromatography‐tandem mass spectrometry

An Orthogonal Test Study on the Preparation of Self-Compacting Underwater Non-Dispersible Concrete

Safety-Risk Assessment for TBM Construction of Hydraulic Tunnel Based on Fuzzy Evidence Reasoning

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