Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Machine-made sand, preparation method and concrete prepared from machine-made sand
The invention provides machine-made sand, a preparation method and concrete prepared from the machine-made sand, and relates to the technical field of building materials. According to the preparation method, a sodium hexametaphosphate aqueous solution is used as a cleaning solution to clean crude sand (original machine-made sand which is obtained by mechanically crushing and screening rocks and meets the use requirements), so that the agglomeration of mud powder is reduced, the adhesive force between the mud powder and stone powder can be reduced, mud powder particles are separated, and the utilization rate of the mud powder is improved. And the effect of separating the mud powder from the stone powder can be achieved. As the density of the mud powder is small and the density of the stone powder is large, the mud powder in the cleaning liquid can float on the upper layer, and the stone powder is precipitated to the lower layer, the mud powder in the crude sand is removed in this way, and the stone powder is reserved to the maximum extent. The machine-made sand prepared in the mode is low in mud powder content and small in stone powder loss amount. The machine-made sand prepared by the preparation method is used as a raw material, and the compressive strength and the tensile strength of the machine-made sand are relatively high, so that the effect of improving the performance of concrete is achieved.
本发明提出了一种机制砂、制备方法及以其制备而得混凝土，涉及建筑材料技术领域。该制备方法以六偏磷酸钠水溶液作为清洗液对原砂(由岩石经过机械粉碎、筛分，且符合使用需求的原始机制砂)进行清洗，以此降低泥粉的自身团聚性，并可降低泥粉与石粉间的粘附力，以达到泥粉颗粒间分离，并能达到泥粉与石粉的分离效果。由于泥粉密度较小，而石粉密度较大，在清洗液中的泥粉则可漂浮于上层，而石粉则沉淀至下层，以此方式除去原砂中的泥粉，并最大限度的保留石粉。以上述方式制备而得的机制砂其泥粉含量较低，石粉的损失量较小。以上述制备方法制备而得的机制砂作为原料制得，其抗压强度以及抗拉强度均较强，以此达到提升混凝土性能的效果。
Machine-made sand, preparation method and concrete prepared from machine-made sand
The invention provides machine-made sand, a preparation method and concrete prepared from the machine-made sand, and relates to the technical field of building materials. According to the preparation method, a sodium hexametaphosphate aqueous solution is used as a cleaning solution to clean crude sand (original machine-made sand which is obtained by mechanically crushing and screening rocks and meets the use requirements), so that the agglomeration of mud powder is reduced, the adhesive force between the mud powder and stone powder can be reduced, mud powder particles are separated, and the utilization rate of the mud powder is improved. And the effect of separating the mud powder from the stone powder can be achieved. As the density of the mud powder is small and the density of the stone powder is large, the mud powder in the cleaning liquid can float on the upper layer, and the stone powder is precipitated to the lower layer, the mud powder in the crude sand is removed in this way, and the stone powder is reserved to the maximum extent. The machine-made sand prepared in the mode is low in mud powder content and small in stone powder loss amount. The machine-made sand prepared by the preparation method is used as a raw material, and the compressive strength and the tensile strength of the machine-made sand are relatively high, so that the effect of improving the performance of concrete is achieved.
本发明提出了一种机制砂、制备方法及以其制备而得混凝土，涉及建筑材料技术领域。该制备方法以六偏磷酸钠水溶液作为清洗液对原砂(由岩石经过机械粉碎、筛分，且符合使用需求的原始机制砂)进行清洗，以此降低泥粉的自身团聚性，并可降低泥粉与石粉间的粘附力，以达到泥粉颗粒间分离，并能达到泥粉与石粉的分离效果。由于泥粉密度较小，而石粉密度较大，在清洗液中的泥粉则可漂浮于上层，而石粉则沉淀至下层，以此方式除去原砂中的泥粉，并最大限度的保留石粉。以上述方式制备而得的机制砂其泥粉含量较低，石粉的损失量较小。以上述制备方法制备而得的机制砂作为原料制得，其抗压强度以及抗拉强度均较强，以此达到提升混凝土性能的效果。
Machine-made sand, preparation method and concrete prepared from machine-made sand
一种机制砂、制备方法及以其制备而得混凝土
LI JIAZHENG (Autor:in) / LIN YUQIANG (Autor:in) / GONG DEXIN (Autor:in) / SHI YAN (Autor:in) / LI MINGXIA (Autor:in) / LI YANG (Autor:in) / XIE JIANMING (Autor:in) / CHEN CHENG (Autor:in) / WU YONGLIANG (Autor:in) / LI FENGLI (Autor:in)
30.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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