Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Portland cement and preparation method thereof
The invention discloses Portland cement and a preparation method thereof. The Portland cement is prepared from the following components in percentage by mass: cement clinker, phosphogypsum, fly ash and limestone waste rock. The limestone waste rock has the chemical components of LOI, SiO2, Al2O3, Fe2O3, CaO, MgO and water; and the phosphogypsum comprises the following chemical components: LOI, SiO2, Al2O3, Fe2O3, CaO, MgO, SO3 and water. The method comprises the steps: grinding the clinker, phosphogypsum and fly ash according to the proportion requirements; independently grinding the limestone waste rock, and controlling the grinding specific surface area of the limestone waste rock to be greater than 500m < 2 >/kg; and mixing the two ground semi-finished products to form a mixture of which the specific surface area is greater than or equal to 380m < 2 >/kg, wherein the linear expansivity of the mixture after 7 days is greater than or equal to 0.15%, the linear expansivity of the mixture after 28 days is less than 0.60%, and the setting time is 200-750 minutes. Pavement cracks are eliminated, the service life of the pavement is prolonged, and various road construction requirements are met by replacing an expanding agent; and industrial green development is realized.
本发明公开了一种硅酸盐水泥及其制作方法，该硅酸盐水泥的配方及其制备方法包括以下质量百分数组分：水泥熟料，磷石膏，粉煤灰和石灰石废石；石灰石废石化学成分为：LOI，SiO2，Al2O3，Fe2O3，CaO，MgO和水；磷石膏化学成分为：LOI，SiO2，Al2O3，Fe2O3，CaO，MgO，SO3和水；熟料、磷石膏和粉煤灰按照比例要求进行粉磨；石灰石废石单独粉磨，控制石灰石废石粉磨比表面积大于500m2/kg；两种粉磨后的半成品混合后成为比表面积大于等于380m2/kg的混合物；该混合物7天线膨胀率大于等于0.15％，28天线膨胀率小于0.60％，凝结时间200分钟～750分钟；消除路面裂缝，提高路面使用寿命，代替膨胀剂适应各种道路施工的要求；实现工业绿色发展。
Portland cement and preparation method thereof
The invention discloses Portland cement and a preparation method thereof. The Portland cement is prepared from the following components in percentage by mass: cement clinker, phosphogypsum, fly ash and limestone waste rock. The limestone waste rock has the chemical components of LOI, SiO2, Al2O3, Fe2O3, CaO, MgO and water; and the phosphogypsum comprises the following chemical components: LOI, SiO2, Al2O3, Fe2O3, CaO, MgO, SO3 and water. The method comprises the steps: grinding the clinker, phosphogypsum and fly ash according to the proportion requirements; independently grinding the limestone waste rock, and controlling the grinding specific surface area of the limestone waste rock to be greater than 500m < 2 >/kg; and mixing the two ground semi-finished products to form a mixture of which the specific surface area is greater than or equal to 380m < 2 >/kg, wherein the linear expansivity of the mixture after 7 days is greater than or equal to 0.15%, the linear expansivity of the mixture after 28 days is less than 0.60%, and the setting time is 200-750 minutes. Pavement cracks are eliminated, the service life of the pavement is prolonged, and various road construction requirements are met by replacing an expanding agent; and industrial green development is realized.
本发明公开了一种硅酸盐水泥及其制作方法，该硅酸盐水泥的配方及其制备方法包括以下质量百分数组分：水泥熟料，磷石膏，粉煤灰和石灰石废石；石灰石废石化学成分为：LOI，SiO2，Al2O3，Fe2O3，CaO，MgO和水；磷石膏化学成分为：LOI，SiO2，Al2O3，Fe2O3，CaO，MgO，SO3和水；熟料、磷石膏和粉煤灰按照比例要求进行粉磨；石灰石废石单独粉磨，控制石灰石废石粉磨比表面积大于500m2/kg；两种粉磨后的半成品混合后成为比表面积大于等于380m2/kg的混合物；该混合物7天线膨胀率大于等于0.15％，28天线膨胀率小于0.60％，凝结时间200分钟～750分钟；消除路面裂缝，提高路面使用寿命，代替膨胀剂适应各种道路施工的要求；实现工业绿色发展。
Portland cement and preparation method thereof
一种硅酸盐水泥及其制作方法
WU HAO (Autor:in) / REN FENGYUAN (Autor:in) / LIU YUJIE (Autor:in)
28.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Portland cement clinker and preparation method thereof
| Europäisches Patentamt | 2020
Portland cement clinker and preparation method thereof
| Europäisches Patentamt | 2022