| 1. | A discussion on standard of toughness index for sythetic diamond and its testing technique
浅议企业人造金刚石冲击韧性标准与检测技术 |
| 2. | Based on these results and the theory of fracture mechanics set up the new evaluation method ? racture - cmod toughness method . the concept of strength and toughness index of steel fiber concrete is founded
在此基础之上，建立了以断裂力学为理论基础的钢纤维韧性评测方法? ?断裂cmod韧度指数法；提出钢纤维混凝土强韧双重指标概念。 |
| 3. | Undoubtedly , it is a new attempt in the field of concrete research . 2 this study attempts to substitute woven fiber grid for steel in concrete . after laying woven fiber grid in concrete beams , their flexural strength and flexural toughness index are greatly improved
本课题的创新之处在于以下几个方面：本课题采用编织纤维格栅来增强混凝土，这在混凝土增强材料研究领域中无疑是一个新的尝试；试图采用编织纤维格栅代替混凝土中的钢筋来承载力的作用。 |
| 4. | The result show that steel fiber can improve the toughness of matrix concrete after cracking greatly . investigating the existent studying achievement of evaluation methods of toughness of steel fiber concrete . the limitations of these methods are summarized and the principle of founding up the evaluation method of toughness index of steel fiber concrete is given
分析结果认为，钢纤维对混凝土的作用突出表现在对基体混凝土裂后韧性性能的改善；系统分析了现有钢纤维混凝土韧性评价方法研究成果，总结出普遍存在的不足及局限性，给出建立钢纤维混凝土韧性指标评价方法所应依循的原则。 |
| 5. | In order to use the strength and toughness index for design and apply of sfrc unified theoretical calculation formula of reinforcing and toughening of sfrc is given . experiments on bending toughness , breaking toughness and cube strength test results are carried out in connection with various kind of deformed steel fiber
初步给出建立钢纤维混凝土增强、增韧统一理论计算公式思想，为钢纤维混凝土强韧双重指标在设计、选用钢纤维混凝土中的应用打下基础；针对不同种类异形钢纤维进行了弯曲韧性、断裂韧性、立方体抗压强度等试验。 |
| 6. | Based on these test results , the effect of the kind of fiber on the reinforcing and toughening state of sfrc is analyzed the experimental results show that the kind of fiber affect the reinforcing and toughness state of sfrc greatly . the experimental results are analyzed using fracture - cmod toughness method , flexural toughness index isjiojao and toughness index design value
在试验的基础上，分析了纤维种类对钢纤维混凝土增强、增韧性能的影响；运用断裂cmod韧度法、 《钢纤维混凝土试验方法标准》 cecs13 : 89推荐的弯曲韧性指数评价方法和美国astmc1018 - 89标准推荐的韧度设计值分析本文中的试验结果。 |
