A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Additive for rock-fill concrete engineering and preparation method thereof
The invention relates to an additive for rock-fill concrete engineering, which at least comprises the following components: an amylodextrin retarder, an activator, a polycarboxylate thixotropic agent and a water reducer, and the additive is used for changing the working performance and hardening performance of concrete with high self-compaction performance; the mass percent of each component is as follows: 1.6%-3.5% of the amylodextrin retarder; 5.2% to 21.3% of an exciting agent; 0.25 to 0.90 percent of a polycarboxylate thixotropic agent; and 75.2%-90.5% of a water reducing agent. When the admixture is added into high-self-compaction concrete used in rock-fill concrete engineering, the working performance such as flowability, thixotropy and long initial setting time of the high-self-compaction concrete can be improved, and the admixture has good volume stability, good anti-permeability and anti-freezing performance, low cement consumption and other hardening performance. And the method has obvious economic benefits.
本申请涉及一种用于堆石混凝土工程的外加剂，至少包括如下组分：淀粉糊精类缓凝剂、激发剂、聚羧酸盐触变剂、减水剂，所述外加剂用于改变高自密实性能混凝土的工作性能和硬化性能；上述各组分的质量百分比如下：淀粉糊精类缓凝剂：1.6％‑3.5％；激发剂：5.2％‑21.3％；聚羧酸盐触变剂：0.25‑0.90％；减水剂：75.2％‑90.5％。在堆石混凝土工程使用的高自密实性能混凝土中添加本申请的外加剂，既能够改善高自密实性能混凝土的流动性、触变性和较长的初凝时间等工作性能，又具备良好的体积稳定性，良好的抗渗和抗冻性能，以及较低的水泥用量等硬化性能，具有显著的经济效益。
Additive for rock-fill concrete engineering and preparation method thereof
The invention relates to an additive for rock-fill concrete engineering, which at least comprises the following components: an amylodextrin retarder, an activator, a polycarboxylate thixotropic agent and a water reducer, and the additive is used for changing the working performance and hardening performance of concrete with high self-compaction performance; the mass percent of each component is as follows: 1.6%-3.5% of the amylodextrin retarder; 5.2% to 21.3% of an exciting agent; 0.25 to 0.90 percent of a polycarboxylate thixotropic agent; and 75.2%-90.5% of a water reducing agent. When the admixture is added into high-self-compaction concrete used in rock-fill concrete engineering, the working performance such as flowability, thixotropy and long initial setting time of the high-self-compaction concrete can be improved, and the admixture has good volume stability, good anti-permeability and anti-freezing performance, low cement consumption and other hardening performance. And the method has obvious economic benefits.
本申请涉及一种用于堆石混凝土工程的外加剂，至少包括如下组分：淀粉糊精类缓凝剂、激发剂、聚羧酸盐触变剂、减水剂，所述外加剂用于改变高自密实性能混凝土的工作性能和硬化性能；上述各组分的质量百分比如下：淀粉糊精类缓凝剂：1.6％‑3.5％；激发剂：5.2％‑21.3％；聚羧酸盐触变剂：0.25‑0.90％；减水剂：75.2％‑90.5％。在堆石混凝土工程使用的高自密实性能混凝土中添加本申请的外加剂，既能够改善高自密实性能混凝土的流动性、触变性和较长的初凝时间等工作性能，又具备良好的体积稳定性，良好的抗渗和抗冻性能，以及较低的水泥用量等硬化性能，具有显著的经济效益。
Additive for rock-fill concrete engineering and preparation method thereof
一种用于堆石混凝土工程的外加剂及制备方法
LI FENGLIANG (author) / WANG TENGFEI (author) / QIAO ZHICHAO (author) / BI ZHONGMING (author) / WU YU (author) / WU YUANPENG (author) / JI GUANGFU (author) / YANG YU (author)
2024-02-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2024
Rock-fill concrete permeable dam and construction method thereof
| European Patent Office | 2022