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In order to improve the high-performance concrete quality of longer brittleness, lower tensile strength, particularly the less descending branch in stress-strain curve compared with that of ordinary concrete. The breakthrough of this thesis lies in the mixture of short carbon fiber. Four factors such as water-binder ratio, volume ratio of short carbon fiber and blending value of high efficiency water-reducing admixture were selected as variable. Experiment was carried out by utilizing uniform design. Regression...

In order to improve the high-performance concrete quality of longer brittleness, lower tensile strength, particularly the less descending branch in stress-strain curve compared with that of ordinary concrete. The breakthrough of this thesis lies in the mixture of short carbon fiber. Four factors such as water-binder ratio, volume ratio of short carbon fiber and blending value of high efficiency water-reducing admixture were selected as variable. Experiment was carried out by utilizing uniform design. Regression equation was established by regression analysis of the compression strength and the split tensile strength separately utilizing SPSS software. The process of optimization was obtained with the aid of MATLAB. Finally the optimized ratio was acquired. Results of the research show that the brittleness of concrete are decreased significantly by adding short carbon fiber. And the radio of the split tensile strength and compression strength increases to 1/6 - 1/8 from 1/10 - 1/15. In addition, moisture retention and coherence of the high-performance concrete are improved greatly. At last, microscope structure of short carbon fiber was studied through electron microscope and analysis was made on the basis of principles.

为了改善高强混凝土由于水泥自缩、湿涨造成的脆性大、抗拉强度低,特别是应力——应变曲线的下降段不及普通混凝土的特点,本文以掺入短碳纤维为突破口,选取水胶比、砂率、短碳纤维的体积比、高效减水剂掺量四个因素作为变量,利用均匀设计安排试验,用SPSS软件对抗压强度和劈拉强度分别进行回归分析而得到回归方程,用MATLAB进行优化处理,进而求出最优配比。研究结果表明,短碳纤维的加入可明显改善混凝土的脆性,劈拉强度与抗压强度之比由原来的1/10~1/15增大到1/6~1/8,且拌合物的保水性、粘聚性也得到明显改善。最后用扫描电子显微镜观测了短碳纤维增强混凝土的微观结构,并从基理上进行了分析。

The application of uniform design in the optimization of the mix proportion of resin concrete is introduced. Below the given experiment term adopting the uniform design forms and using forms to determine the experiment mix proportion of the resin concrete. May attain pleasant result by means of to the full little degree tests and acquire the aim better to test effect. The paper's author selects epoxy resin、solidifying dose、tenacious dose、packing and grit radio 5 elements as the variable and utilizing Statistical...

The application of uniform design in the optimization of the mix proportion of resin concrete is introduced. Below the given experiment term adopting the uniform design forms and using forms to determine the experiment mix proportion of the resin concrete. May attain pleasant result by means of to the full little degree tests and acquire the aim better to test effect. The paper's author selects epoxy resin、solidifying dose、tenacious dose、packing and grit radio 5 elements as the variable and utilizing Statistical Product and Service Solutions(SPSS) software to adjust compressive resistance and combating rolls over intensity carrying on the stepwise regression analysis separately to obtain regression equation. Optimizing in the way of Matlab, figure out intensity optimal value below the given experiment term .This research fruit have application and dissemination value and probe out the fresh means in the interest of the resin concrete mix proportion.

在给定试验条件下,采用均匀设计表U 11(165)及其使用表确定树脂混凝土的试验配合比,可以达到通过尽量少次试验,取得较好试验效果的目的.本文选取环氧树脂、固化剂、增韧剂、填料、砂率5个因素作为变量,利用SPSS软件对抗压强度和抗折强度分别进行逐步回归分析,得到回归方程.用Matlab进行优化,求出给定试验条件下强度的最优值.优化后的组合是:环氧树脂∶固化剂∶增韧剂=8∶3∶1,填料(粉煤灰)20%,砂率35%.此项研究成果具有推广应用价值,为树脂混凝土配合比设计探索出一条微机辅助试验设计的新方法.

The paper's main content is the research on steel fiber utilized in resin concrete and the aggregate is coal gangue.Finally uses SPSS software to found regression equation with the enter regression analysis separately obtain.Optimizing in the way of MATLAB,find out the optimum of intensity value and composition under the given experiment.which enlarge application range.

对以煤矸石为骨料,并在其中加入钢纤维的树脂混凝土进行研究。利用SPSS软件对抗压强度和抗折强度分别进行逐步回归分析,得到回归方程。再用MATLAB软件进行优化,进而得到给定试验条件下强度的最优值和各成分最优组合,从而扩大了它的应用范围。

 
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