Machine-made sand and recycled machine-made sand concrete and preparation method thereof
By using anti-flocculant and alkaline concrete wastewater in machined sand and regenerated machined sand concrete to form an alkaline water film layer, the problem of flocculant residue affecting concrete and ease and strength in wet process is solved, and high and easy Concrete preparation of properties and strength.
CN118495896BActive Publication Date: 2024-12-31ZHEJIANG TIANZAO ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information
- Application Number
- CN202410975580.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2044-07-19
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Abstract
The present invention relates to a machine-made sand and regenerated machine-made sand concrete and a preparation method thereof, wherein the preparation method comprises the following steps: mixing fine aggregate, coarse aggregate, cement, admixture, deflocculant and alkaline concrete wastewater containing a retarder for the first time, adding a water reducer and water for the second mixing, and obtaining machine-made sand and regenerated machine-made sand concrete; wherein the fine aggregate comprises at least one of machine-made sand containing a flocculant and regenerated machine-made sand containing a flocculant, and the deflocculant comprises tetraethyl orthosilicate, a low-foaming surfactant and water. The machine-made sand and regenerated machine-made sand concrete obtained by the present invention has high workability and strength, and also has good economic value and market application prospects.
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