Green environmentally friendly concrete mixed with recycled water and preparation method thereof

A concrete formulation with recycled water, incorporating specific additives, addresses durability issues by improving bonding and reducing water consumption, resulting in enhanced mechanical properties and reduced cracking.

CN117342844BActive Publication Date: 2024-12-24HEBEI XIONGAN RONGXI CONCRETE CO LTD
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Patent Information

Application Number
CN202311284236.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-07
Publication Date
2024-12-24
Estimated Expiration
2043-10-07

AI Technical Summary

Technical Problem

The durability and mechanical properties of concrete are compromised when using recycled water due to issues such as chloride ion content, permeability, and freeze-thaw salts, which affect corrosion and frost resistance.

Method used

A green environmentally friendly concrete formulation using recycled water, comprising specific ratios of cement, slag powder, fly ash, sand, gravel, and additives like polycarboxylate water reducer, sodium methyl methacrylate sulfonate, and silanes, which improve durability and mechanical properties by enhancing bonding, reducing water consumption, and forming a cross-linked network.

Benefits of technology

The concrete formulation significantly improves durability and mechanical properties, reducing cracking and enhancing long-term volume stability while maintaining sufficient fluidity and strength.

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Abstract

The present invention belongs to the technical field of concrete, and proposes a green environmentally friendly concrete mixed with recycled water and a preparation method thereof. The raw materials include, by mass, 117-246 parts of cement, 49-95 parts of slag powder, 68-124 parts of fly ash, 807-1021 parts of zone II medium sand, 250-920 parts of 5-10 mm crushed stone, 0-798 parts of 10-20 mm crushed stone, 3.8-7.21 parts of polycarboxylic acid water reducer, 2-3 parts of sodium methyl propylene sulfonate, 3-5 parts of polyethylene glycol 200, 8-12 parts of calcium sulfoaluminate, 3-15 parts of di-tert-butoxy diacetoxy silane, 6-10 parts of 2-(3,4-epoxycyclohexane) ethyl trimethoxy silane, 115-143 parts of ordinary water, and 50-62 parts of recycled water. Through the above technical scheme, the present invention improves the durability of concrete by improving the concrete formula containing recycled water.
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Citation Information

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