| 1. | The research of crack trend about the fly - ash high - strength concrete
粉煤灰高强混凝土收缩开裂趋势的研究 |
| 2. | Study on shrinkage - cracking property of hpc by shrinkage - reducing admixture
减缩剂对高性能砼收缩开裂性能影响的研究 |
| 3. | Effects of shrinkage reducing admixture and polypropylene fiber on early age shrinkage cracking of concrete
减缩剂与聚丙烯纤维对混凝土早期收缩开裂的影响 |
| 4. | But the questions of buildings cracking of hsc are very serious . it brings people a lot of trouble and unnecessary loss
但是，其存在自收缩开裂、湿涨开裂以及脆性等缺点大大影响了高强混凝土的工作及使用性能。 |
| 5. | Therefore , the technology combining steel fiber with expensive agent is appropriate to the plastic shrinkage and cracking of concretes
因此，采用膨胀剂与钢纤维的复合技术是防止混凝土发生塑性收缩开裂的比较理想的技术措施。 |
| 6. | The judge criterion of plastic shrinkage cracking for cement based material was studied through the testing of plastic tensile strength and plastic shrinkage capillary stress of cement mortar and concrete
摘要采用自行设计的塑性抗拉强度、塑性收缩开裂应力测定装置测试了水泥砂浆、混凝土塑性抗拉强度和塑性收缩开裂应力。 |
| 7. | With a slab test of restricted shrinkage , the effect of polypropylene fiber , steel fiber and expansive agent on early - age plastic shrinkage and cracking of concretes with high content mineral admixtures is investigated
摘要采用平板限制收缩试验法，研究了聚丙烯纤维、钢纤维与膨胀剂及其复合技术对大掺量矿物掺合料混凝土早期塑性收缩开裂的影响。 |
| 8. | The extensive application of high strength and high performance concrete has already obtained great technique , economy and social benefit , but its early cracking is serious , which is the important problem that the social concerned
高强高性能混凝土的广泛应用已取得了显著的技术、经济和社会效益，但是它的早期收缩开裂现象严重也已成为社会普遍关心的重要问题。 |
| 9. | This paper analyzes the influence of sra on the shrinkage - cracking property of hpc by designing five check - up experiments including desiccation - shrinkage , autogeous shrinkage , flat - restraint , anti - chloride ion penetration and ultimate tensile strain
摘要设计了干燥收缩、自收缩、平板约束、抗氯离子渗透性以及极限拉应变等5种试验方法来检验减缩剂对高性能混凝土收缩开裂性能的影响。 |
| 10. | Because of its many excellent advantages , hpc has come to be used in a wide range . but the existed projects show it ' s weakness , such as the brittleness and the tendency to early age cracking of hpc is more serious and sensitive than ordinary performance concrete ( opc )
高性能混凝土由于其优异的性能得到了越来越广泛的应用，但已有的工程实践中也相继暴露了hpc的一些弱点，如高性能混凝土的脆性和易于收缩开裂的倾向可能比普通混凝土更严重。 |
