This scientific paper gives consideration to the information on the contemporary structure of binary systems and three-component CaO-Al_2O_3-ZrO_2 system required to select rational parameters for the synthesis of cem...This scientific paper gives consideration to the information on the contemporary structure of binary systems and three-component CaO-Al_2O_3-ZrO_2 system required to select rational parameters for the synthesis of cementing agents.The production process of experimental clinker that has a Ca_7Al_6ZrO_（18） composition has been described.The data of X-ray phase analysis and petrographic analysis of the experimental composition of special cement have been given and the reasons for availability of inappropriate phases have been analyzed.The processes of hydration hardening of the cement stone have been studied and the data of differential thermal analysis were used for the establishment of the hydration mechanism for basic crystal phases in the cement clinker composition.The differences in the hydration processes of experimental special cement were analyzed in comparison with known mechanisms.A possibility of the exploitation of special binder in contact with ZrO_2（CaO-stabilized）was tested using the specimens of fine concrete that were subjected to thermal treatment in different modes.The physical and mechanical properties of specimens and the mineralogical composition of concretes were given based on the data of X-ray analysis and the petrographic analysis.The cement additive was selected and its amount in the concrete composition was defined to slow-down the hardening and the mixture plasticization time.The relationships of physical and mechanical characteristics of concrete specimens were defined experimentally as a function of granulometric composition of the filler and thermal treatment temperature.The investigation data of corrosion resistance obtained using the static method were used to find out if experimental concretes can operate in contact with the steel-smelting alkaline slag.展开更多
The score function and aggregation operator provide the theoretical basis for intuitionistic fuzzy multiple attribute decision making(MADM),where the role of the score function is to compare and rank the intuitionisti...The score function and aggregation operator provide the theoretical basis for intuitionistic fuzzy multiple attribute decision making(MADM),where the role of the score function is to compare and rank the intuitionistic fuzzy numbers(IFNs),and the role of the aggregation operator is to integrate the evaluation information.In view of that,this paper proposes a new score function and aggregation operator,and a new intuitionistic fuzzy MADM method.It first constructs a parametric piecewise score function and discusses the influence of hesitancy degree and the parameterλon it.Moreover,some properties of the constructed score function are discussed,including the monotonicity,maximum,minimum,and range.Then,it introduces a intuitionistic fuzzy modified Einstein aggregation(IFMEWA)operator and proves monotonicity,idempotency and boundedness of IFMEWA operator.Finally,combined with the constructed score function and IFMEWA operator,it proposes a new intuitionistic fuzzy MADM method.展开更多
文摘This scientific paper gives consideration to the information on the contemporary structure of binary systems and three-component CaO-Al_2O_3-ZrO_2 system required to select rational parameters for the synthesis of cementing agents.The production process of experimental clinker that has a Ca_7Al_6ZrO_（18） composition has been described.The data of X-ray phase analysis and petrographic analysis of the experimental composition of special cement have been given and the reasons for availability of inappropriate phases have been analyzed.The processes of hydration hardening of the cement stone have been studied and the data of differential thermal analysis were used for the establishment of the hydration mechanism for basic crystal phases in the cement clinker composition.The differences in the hydration processes of experimental special cement were analyzed in comparison with known mechanisms.A possibility of the exploitation of special binder in contact with ZrO_2（CaO-stabilized）was tested using the specimens of fine concrete that were subjected to thermal treatment in different modes.The physical and mechanical properties of specimens and the mineralogical composition of concretes were given based on the data of X-ray analysis and the petrographic analysis.The cement additive was selected and its amount in the concrete composition was defined to slow-down the hardening and the mixture plasticization time.The relationships of physical and mechanical characteristics of concrete specimens were defined experimentally as a function of granulometric composition of the filler and thermal treatment temperature.The investigation data of corrosion resistance obtained using the static method were used to find out if experimental concretes can operate in contact with the steel-smelting alkaline slag.
基金supported by the National Natural Science Foundation of China[grant number 11401494]the Postdoctoral Science Foundation of China[grant number 2016M592682]+2 种基金the Sichuan Science and Technology Program[grant number 2022YFQ0012]the Young Scholars Development Fund of Southwest Petroleum University[grant number 202199010062]the Scientific Research Starting Project of Southwest Petroleum University[grant number 2021QHZ020].
文摘The score function and aggregation operator provide the theoretical basis for intuitionistic fuzzy multiple attribute decision making(MADM),where the role of the score function is to compare and rank the intuitionistic fuzzy numbers(IFNs),and the role of the aggregation operator is to integrate the evaluation information.In view of that,this paper proposes a new score function and aggregation operator,and a new intuitionistic fuzzy MADM method.It first constructs a parametric piecewise score function and discusses the influence of hesitancy degree and the parameterλon it.Moreover,some properties of the constructed score function are discussed,including the monotonicity,maximum,minimum,and range.Then,it introduces a intuitionistic fuzzy modified Einstein aggregation(IFMEWA)operator and proves monotonicity,idempotency and boundedness of IFMEWA operator.Finally,combined with the constructed score function and IFMEWA operator,it proposes a new intuitionistic fuzzy MADM method.
