Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composite admixture for inhibiting alkali aggregate reaction and preparation method thereof
The invention discloses a composite admixture for inhibiting alkali aggregate reaction. The composite admixture comprises the following components in parts by weight: 10-20 parts of nano cobalt ferrite, 20-30 parts of silica fume, 45-55 parts of modified tuff powder, 2-4 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 2-4 parts of long-chain alkyl dimethyl amine and 4-6 parts of modified polyamide fiber. According to the invention, multi-angle and multi-layer improvement means of capturing Na < + > and K < + > from the source, preventing Na < + > and K < + > from being contacted with active SiO2 in the reaction process, controlling volume deformation by using uniformly dispersed modified fibers and the like are adopted, so that the occurrence of alkali aggregate reaction can be effectively inhibited; the composite admixture can replace traditional cementing materials such as cement in a large mixing amount, can effectively take good use performance of the obtained concrete into account, and has remarkable economic and environmental benefits; and the related preparation method is relatively simple, relatively low in cost and suitable for popularization and application.
本发明公开了一种抑制碱骨料反应的复合掺合料，各组分及其所占重量份数包括：纳米铁酸钴10～20份，硅灰20～30份，改性凝灰岩粉45～55份，脂肪醇聚氧乙烯醚硫酸钠2～4份，长链烷基二甲基胺2～4份，改性锦纶纤维4～6份。本发明采用从源头捕捉Na+、K+、反应过程中阻止Na+、K+与活性SiO2接触、利用均匀分散的改性纤维来控制体积变形等多角度、多层面改进手段，可有效抑制碱骨料反应的发生；所述复合掺合料可大掺量取代水泥等传统胶凝材料，并可有效兼顾所得混凝土良好的使用性能，具有显著的经济和环境效益；且涉及的制备方法较简单、成本较低，适合推广应用。
Composite admixture for inhibiting alkali aggregate reaction and preparation method thereof
The invention discloses a composite admixture for inhibiting alkali aggregate reaction. The composite admixture comprises the following components in parts by weight: 10-20 parts of nano cobalt ferrite, 20-30 parts of silica fume, 45-55 parts of modified tuff powder, 2-4 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 2-4 parts of long-chain alkyl dimethyl amine and 4-6 parts of modified polyamide fiber. According to the invention, multi-angle and multi-layer improvement means of capturing Na < + > and K < + > from the source, preventing Na < + > and K < + > from being contacted with active SiO2 in the reaction process, controlling volume deformation by using uniformly dispersed modified fibers and the like are adopted, so that the occurrence of alkali aggregate reaction can be effectively inhibited; the composite admixture can replace traditional cementing materials such as cement in a large mixing amount, can effectively take good use performance of the obtained concrete into account, and has remarkable economic and environmental benefits; and the related preparation method is relatively simple, relatively low in cost and suitable for popularization and application.
本发明公开了一种抑制碱骨料反应的复合掺合料，各组分及其所占重量份数包括：纳米铁酸钴10～20份，硅灰20～30份，改性凝灰岩粉45～55份，脂肪醇聚氧乙烯醚硫酸钠2～4份，长链烷基二甲基胺2～4份，改性锦纶纤维4～6份。本发明采用从源头捕捉Na+、K+、反应过程中阻止Na+、K+与活性SiO2接触、利用均匀分散的改性纤维来控制体积变形等多角度、多层面改进手段，可有效抑制碱骨料反应的发生；所述复合掺合料可大掺量取代水泥等传统胶凝材料，并可有效兼顾所得混凝土良好的使用性能，具有显著的经济和环境效益；且涉及的制备方法较简单、成本较低，适合推广应用。
Composite admixture for inhibiting alkali aggregate reaction and preparation method thereof
一种抑制碱骨料反应的复合掺合料及其制备方法
CHEN XU (Autor:in) / AI HONGXIANG (Autor:in) / YUE CAIHONG (Autor:in) / HAN SHIJIE (Autor:in) / LU XIAO (Autor:in) / GU LONGLONG (Autor:in) / MAO FEIKAI (Autor:in) / LI NING (Autor:in)
19.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Admixture for inhibiting alkali-silicic acid reaction of aggregate and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2020
Glass aggregate for inhibiting alkali-aggregate reaction and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2019
Influence of mineral admixture on the alkali-aggregate reaction
| Tema Archiv | 1997