A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to a concrete admixture and a preparation method thereof, the concrete admixture comprises the following raw materials by mass: 65%-75% of mineral powder, 15%-25% of silica fume, 1%-2.5% of an additive and 9%-18% of imperata cylindrica powder, and the imperata cylindrica powder is obtained by cleaning, airing and ultrasonically crushing imperata cylindrica. According to the concrete admixture disclosed by the invention, the lalang grass rhizome powder and the sodium thiosulfate are matched for use, so that the 1d and 28d activity indexes of the concrete admixture are remarkably improved compared with those of the lalang grass rhizome powder, the sodium sulfate, the sodium thiocyanate, the sodium nitrite and other external medicines which are matched for use; the cogongrass powder and the sodium thiosulfate are matched for use, so that a synergistic effect is achieved, that is, the 1d activity index and the 28d activity index of the concrete admixture can be remarkably improved through matched use of the cogongrass powder and the sodium thiosulfate.
本发明涉及一种混凝土掺合料及其制备方法，所述混凝土掺合料包括以下质量百分比的原料：矿粉65％‑75％、硅灰15％‑25％、外加药品1％‑2.5％、白茅粉9％‑18％，其中，白茅粉为白茅根依次经清洗、晾干、超声粉碎后获得。本发明的混凝土掺合料中的白茅粉和硫代硫酸钠配合使用，相对于白茅粉与硫酸钠、硫氰酸钠、亚硝酸钠等外加药品的配合使用，显著提高了混凝土掺合料的1d和28d活性指数，由此可说明，白茅粉和硫代硫酸钠相互配合使用是具有协同增效的效果，即通过白茅粉和硫代硫酸钠相互配合使用，可以显著提高混凝土掺合料的1d和28d活性指数。
The invention relates to a concrete admixture and a preparation method thereof, the concrete admixture comprises the following raw materials by mass: 65%-75% of mineral powder, 15%-25% of silica fume, 1%-2.5% of an additive and 9%-18% of imperata cylindrica powder, and the imperata cylindrica powder is obtained by cleaning, airing and ultrasonically crushing imperata cylindrica. According to the concrete admixture disclosed by the invention, the lalang grass rhizome powder and the sodium thiosulfate are matched for use, so that the 1d and 28d activity indexes of the concrete admixture are remarkably improved compared with those of the lalang grass rhizome powder, the sodium sulfate, the sodium thiocyanate, the sodium nitrite and other external medicines which are matched for use; the cogongrass powder and the sodium thiosulfate are matched for use, so that a synergistic effect is achieved, that is, the 1d activity index and the 28d activity index of the concrete admixture can be remarkably improved through matched use of the cogongrass powder and the sodium thiosulfate.
本发明涉及一种混凝土掺合料及其制备方法，所述混凝土掺合料包括以下质量百分比的原料：矿粉65％‑75％、硅灰15％‑25％、外加药品1％‑2.5％、白茅粉9％‑18％，其中，白茅粉为白茅根依次经清洗、晾干、超声粉碎后获得。本发明的混凝土掺合料中的白茅粉和硫代硫酸钠配合使用，相对于白茅粉与硫酸钠、硫氰酸钠、亚硝酸钠等外加药品的配合使用，显著提高了混凝土掺合料的1d和28d活性指数，由此可说明，白茅粉和硫代硫酸钠相互配合使用是具有协同增效的效果，即通过白茅粉和硫代硫酸钠相互配合使用，可以显著提高混凝土掺合料的1d和28d活性指数。
Concrete admixture and preparation method thereof
一种混凝土掺合料及其制备方法
2024-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Concrete admixture, preparation method thereof and concrete added with concrete admixture
| European Patent Office | 2020