| 1. | Standard specification for chemical admixtures for concrete 混凝土用化学混合物的标准规范 |
| 2. | Chemical admixtures for concrete 混凝土用化学添加剂 |
| 3. | Standard specification for chemical admixtures for use in producing flowing concrete 流动混凝土生产用化学混合物的标准规范 |
| 4. | In this paper , in term of low water - binder ratio , high - volume fly ash concrete with chemical admixture is produced 本文采用双掺(掺粉煤灰和高效减水剂) 、低水胶比的技术路线,配制高掺量粉煤灰混凝土。 |
| 5. | Standard test method for determining the effects of chemical admixtures on the corrosion of embedded steel reinforcement in concrete exposed to chloride environments 混凝土暴露于氯化物环境时确定化学混合物对埋置钢筋腐蚀作用的标准试验方法 |
| 6. | Formula s founded on factors of water - binder and fly ash content is feasible . at the same time , the effects of fly ash quality ( grade , fly ash from huaneng fuzhou power plant ) , content of chemical admixture etc al , are investigated 本文利用环境扫描电子显微镜( esem )技术,研究粉煤灰对各龄期( 3d 、 7d 、 28d 、 60d )混凝土细观结构的影响和不同品质粉煤灰对混凝土细观结构的影响。 |
| 7. | On the base of studying the compatible of chemical admixture and mineral admixture with cement , according to heat of hydration , chemical shrinkage and environment condition in the course of concreting and restrained cracking sensitivity indicates different quantity of mineral admixtures lead to different effect to the stability of concrete , such as 30 % fly ash and 40 % ~ 60 % micro - slag can improve the stability , but silica fume deteriorates the stability 在研究了化学外加剂、矿物掺合料与水泥兼容匹配关系的基础上,指出不同矿物掺合料对混凝土的体积稳定性(热稳定性、化学收缩、干缩、开裂敏感性)的影响不同,粉煤灰掺量达到30 ,矿粉在40 60改善体积稳定性,硅灰恶化了体积稳定性。 |
| 8. | Combining on the investigation achievements of the base establishment concrete durability in shanxi province and the recent research situations of alkali aggregation reaction ( aar ) all over the world , on the condition of the same mortar fluidity , the preventing effects of mineral and chemical admixtures on aar were researched 结合陕西省混凝土耐久性调研成果及国内外目前混凝土碱?骨料反应研究现状,本文还详细研究了在相同流动度条件下矿物掺合料及化学外加剂对碱?骨料反应的抑制效果。 |
| 9. | Analyzing the factors of concrete workability , mechanics quality , durability , cost , the key of mamufacturing lc - hpc are compatible of chemical admixture , stability of volume durability are pointed out , at the same time the principle and the technique route of lc - hpc is put forward 通过对影响混凝土工作性、力学性能、耐久性、生产成本的因素分析,指出混凝土化学外加剂的兼容性、体积稳定性、耐侵蚀能力是lc - hpc配制的关键,提出了lc - hpc配制原则和技术路线。 |