A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ternary low-calcium mineral-based high-activity auxiliary cementing material and preparation method thereof
The invention relates to a ternary low-calcium mineral-based high-activity auxiliary cementing material and a preparation method thereof, and belongs to the technical field of building materials, the material is a # imgabs0 # ternary low-calcium mineral-based high-activity auxiliary cementing material, and is prepared by uniformly mixing calcium, siliceous and sulfur raw materials in proportion, and then sequentially carrying out high-temperature calcination, cooling, grinding and semi-dry carbonation. The 7-day activity index is greater than 80%, and the 28-day activity index is greater than 95%. All devices used in the preparation method are conventional equipment in the prior art, and the process is simple and convenient; the used raw materials are relatively common, so that the method is suitable for industrial production and has important significance on low carbon and energy conservation of the cement; the SCM prepared through carbonation not only reduces early hydration heat release of cement, but also contains a small amount of # imgabs 1 # to improve the early strength of the cement, and C2S hydration improves the middle and later strength of the cement; amorphous silica gel generated by carbonation can react with a cement hydration product Ca (OH) 2 to generate C-S-H, high-activity calcium carbonate and calcium sulfate are beneficial to formation and stabilization of ettringite, and the strength of cement is improved.
一种三元低钙矿物基高活性辅助胶凝材料及其制备方法，属于建筑材料技术领域，该材料是#imgabs0#三元低钙矿物基高活性辅助胶凝材料，是以钙质、硅质及硫质原料按比例混匀后，依次经高温煅烧、冷却、粉磨、半干法碳酸化制备而得，其7天活性指数大于80％，28天活性指数大于95％。本发明制备所用装置均为现有技术中常规设备，工艺简便；使用的原料均较为普遍，适合工业化生产，对于水泥低碳节能具有重要意义；经碳酸化制备的SCM不仅降低水泥早期水化放热，且含有少量#imgabs1#提升水泥早期强度，C2S水化提升水泥中后期强度；碳酸化产生的无定形硅凝胶可与水泥水化产物Ca(OH)2反应生成C‑S‑H，高活性的碳酸钙及硫酸钙有利于钙矾石的形成与稳定，提升水泥强度。
Ternary low-calcium mineral-based high-activity auxiliary cementing material and preparation method thereof
The invention relates to a ternary low-calcium mineral-based high-activity auxiliary cementing material and a preparation method thereof, and belongs to the technical field of building materials, the material is a # imgabs0 # ternary low-calcium mineral-based high-activity auxiliary cementing material, and is prepared by uniformly mixing calcium, siliceous and sulfur raw materials in proportion, and then sequentially carrying out high-temperature calcination, cooling, grinding and semi-dry carbonation. The 7-day activity index is greater than 80%, and the 28-day activity index is greater than 95%. All devices used in the preparation method are conventional equipment in the prior art, and the process is simple and convenient; the used raw materials are relatively common, so that the method is suitable for industrial production and has important significance on low carbon and energy conservation of the cement; the SCM prepared through carbonation not only reduces early hydration heat release of cement, but also contains a small amount of # imgabs 1 # to improve the early strength of the cement, and C2S hydration improves the middle and later strength of the cement; amorphous silica gel generated by carbonation can react with a cement hydration product Ca (OH) 2 to generate C-S-H, high-activity calcium carbonate and calcium sulfate are beneficial to formation and stabilization of ettringite, and the strength of cement is improved.
一种三元低钙矿物基高活性辅助胶凝材料及其制备方法，属于建筑材料技术领域，该材料是#imgabs0#三元低钙矿物基高活性辅助胶凝材料，是以钙质、硅质及硫质原料按比例混匀后，依次经高温煅烧、冷却、粉磨、半干法碳酸化制备而得，其7天活性指数大于80％，28天活性指数大于95％。本发明制备所用装置均为现有技术中常规设备，工艺简便；使用的原料均较为普遍，适合工业化生产，对于水泥低碳节能具有重要意义；经碳酸化制备的SCM不仅降低水泥早期水化放热，且含有少量#imgabs1#提升水泥早期强度，C2S水化提升水泥中后期强度；碳酸化产生的无定形硅凝胶可与水泥水化产物Ca(OH)2反应生成C‑S‑H，高活性的碳酸钙及硫酸钙有利于钙矾石的形成与稳定，提升水泥强度。
Ternary low-calcium mineral-based high-activity auxiliary cementing material and preparation method thereof
一种三元低钙矿物基高活性辅助胶凝材料及其制备方法
CHANG JUN (author) / YUAN JUNGANG (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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