A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a method for preparing a cement binding material fine aggregate by using foundry waste sand, and relates to the technical field of foundry waste sand recycling. The method for preparing the fine aggregate comprises the following steps: A1, adding a regulator and N, N-dimethylformamide into a reaction kettle, uniformly stirring, adjusting the pH value to 8-9, adding a foundry waste sand reclaimed material, heating to 40-60 DEG C, carrying out heat preservation reaction for 3-6 hours, washing and drying to obtain a component I; a2, the first component and river sand are mixed, and fine aggregate is obtained. The fine aggregate prepared by the invention is added into cement as fine aggregate, has the advantages of low water absorption, low water reducing agent adsorption and improvement of the breaking strength and compressive strength of the cement, realizes the environmental protection concept of waste reutilization, and the prepared cement meets the industrial standard and is suitable for the building industry.
本发明公开了一种利用铸造废砂制备水泥胶凝材料细集料的方法，涉及铸造废砂回收利用技术领域。本发明制备细集料的方法包括如下步骤：A1：将调节剂、N，N‑二甲基甲酰胺加入反应釜中搅拌均匀，调节pH至8‑9，加入铸造废砂回收料，升温至40‑60℃，保温反应3‑6h，洗涤、干燥，得到组分一；A2：将组分一和河沙混合，得到细集料。本申请制备的细集料作为细骨料加入水泥中，具有吸水少、吸附减水剂少的优点，提升水泥抗折强度、抗压强度的优点，实现废料再利用的环保理念，且制备出的水泥符合行业标准，适用于建筑行业。
The invention discloses a method for preparing a cement binding material fine aggregate by using foundry waste sand, and relates to the technical field of foundry waste sand recycling. The method for preparing the fine aggregate comprises the following steps: A1, adding a regulator and N, N-dimethylformamide into a reaction kettle, uniformly stirring, adjusting the pH value to 8-9, adding a foundry waste sand reclaimed material, heating to 40-60 DEG C, carrying out heat preservation reaction for 3-6 hours, washing and drying to obtain a component I; a2, the first component and river sand are mixed, and fine aggregate is obtained. The fine aggregate prepared by the invention is added into cement as fine aggregate, has the advantages of low water absorption, low water reducing agent adsorption and improvement of the breaking strength and compressive strength of the cement, realizes the environmental protection concept of waste reutilization, and the prepared cement meets the industrial standard and is suitable for the building industry.
本发明公开了一种利用铸造废砂制备水泥胶凝材料细集料的方法，涉及铸造废砂回收利用技术领域。本发明制备细集料的方法包括如下步骤：A1：将调节剂、N，N‑二甲基甲酰胺加入反应釜中搅拌均匀，调节pH至8‑9，加入铸造废砂回收料，升温至40‑60℃，保温反应3‑6h，洗涤、干燥，得到组分一；A2：将组分一和河沙混合，得到细集料。本申请制备的细集料作为细骨料加入水泥中，具有吸水少、吸附减水剂少的优点，提升水泥抗折强度、抗压强度的优点，实现废料再利用的环保理念，且制备出的水泥符合行业标准，适用于建筑行业。
Method for preparing cement binding material fine aggregate by using foundry waste sand
一种利用铸造废砂制备水泥胶凝材料细集料的方法
2023-06-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Design of Flowable Fill: Waste Foundry Sand as a Fine Aggregate
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