Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Red soil-calcium carbonate-cement-based composite material and preparation method thereof
The invention relates to a red soil-calcium carbonate-cement-based composite material and a preparation method thereof. According to the invention, the purpose of reducing carbon emission in cement production is achieved by reducing the use amount of cement. In addition, by adjusting the proportion of the mineral admixture, cementing materials with different strength levels are prepared. The novel low-carbon cement-based composite cementing material is prepared from the following raw materials: red soil, calcium carbonate, gypsum and cement clinker. Wherein in order to enable the red soil to have volcanic ash reaction activity, the red soil needs to be subjected to high-temperature calcination treatment for 30 min at the temperature of 700-900 DEG C firstly. The red soil has a high Al phase and a high Fe phase, and can form a structure with more stable chemical properties in a hydration reaction. The composite cement-based material has the mechanical property matched with that of ordinary cement while the production cost and carbon emission are reduced. In addition, the material has relatively low hydration heat release and relatively high resistivity, and the relatively high resistivity also shows that the material is superior to the conventional cement in the aspect of chloride ion erosion resistance.
本发明涉及一种红土‑碳酸钙‑水泥基复合材料及其制备方法。该发明通过减少水泥用量来达到减少水泥生产碳排放的目的。此外，通过调节矿物外加剂的占比，来制备出不同强度级别的胶凝材料。该新型低碳水泥基复合胶凝材料的原料中包括红土，碳酸钙，石膏以及水泥熟料。其中，为了使红土具有火山灰反应活性，需先将红土在700‑900℃进行高温煅烧处理30min。红土具有较高的Al相和Fe相，在水化反应中能形成化学性质更稳定的结构。该复合水泥基材料具有在降低生产成本和碳排放的同时，具有与普通水泥相匹配的力学性能。此外该材料具有较低的水化放热量以及较高的电阻率，较高的电阻率也表明在抗氯离子侵蚀方面也优于目前传统水泥。
Red soil-calcium carbonate-cement-based composite material and preparation method thereof
The invention relates to a red soil-calcium carbonate-cement-based composite material and a preparation method thereof. According to the invention, the purpose of reducing carbon emission in cement production is achieved by reducing the use amount of cement. In addition, by adjusting the proportion of the mineral admixture, cementing materials with different strength levels are prepared. The novel low-carbon cement-based composite cementing material is prepared from the following raw materials: red soil, calcium carbonate, gypsum and cement clinker. Wherein in order to enable the red soil to have volcanic ash reaction activity, the red soil needs to be subjected to high-temperature calcination treatment for 30 min at the temperature of 700-900 DEG C firstly. The red soil has a high Al phase and a high Fe phase, and can form a structure with more stable chemical properties in a hydration reaction. The composite cement-based material has the mechanical property matched with that of ordinary cement while the production cost and carbon emission are reduced. In addition, the material has relatively low hydration heat release and relatively high resistivity, and the relatively high resistivity also shows that the material is superior to the conventional cement in the aspect of chloride ion erosion resistance.
本发明涉及一种红土‑碳酸钙‑水泥基复合材料及其制备方法。该发明通过减少水泥用量来达到减少水泥生产碳排放的目的。此外，通过调节矿物外加剂的占比，来制备出不同强度级别的胶凝材料。该新型低碳水泥基复合胶凝材料的原料中包括红土，碳酸钙，石膏以及水泥熟料。其中，为了使红土具有火山灰反应活性，需先将红土在700‑900℃进行高温煅烧处理30min。红土具有较高的Al相和Fe相，在水化反应中能形成化学性质更稳定的结构。该复合水泥基材料具有在降低生产成本和碳排放的同时，具有与普通水泥相匹配的力学性能。此外该材料具有较低的水化放热量以及较高的电阻率，较高的电阻率也表明在抗氯离子侵蚀方面也优于目前传统水泥。
Red soil-calcium carbonate-cement-based composite material and preparation method thereof
一种红土-碳酸钙-水泥基复合材料及制备方法
GUO RONGXIN (Autor:in) / LIN RUNSHENG (Autor:in) / LIN ZHIWEI (Autor:in) / YANG YANG (Autor:in)
11.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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