A kind of modified concrete and preparation method thereof

A concrete and concrete foundation technology, applied in the field of concrete, can solve the problems of damaging the volume stability of concrete, reducing the durability of concrete, and shortening the service life, so as to improve compactness and bonding, good crack resistance and crack resistance, and reduce total The effect of porosity
CN113233850BActive Publication Date: 2022-07-05临沂兰城(枣园)建筑材料供应有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
临沂兰城(枣园)建筑材料供应有限公司
Publication Date
2022-07-05

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Abstract

The invention proposes a modified concrete, which includes concrete base material, concrete expansion agent, silane coupling agent graft-modified polystyrene emulsion, early strength agent, water reducing agent, weakly acidic water and weakly alkaline water; The concrete base material includes the following preparation raw materials: aluminate cement, fly ash, construction waste, lignin fiber, glass fiber; the concrete expansion agent is a microcapsule type, composed of a core material and a shell material, the core material The raw materials for the preparation of the material include metal oxides, sodium lignosulfonate and sodium tripolyphosphate, and the raw materials for the preparation of the shell material include calcium alginate; during construction, after adding the concrete expansion agent, first add a weakly acidic aqueous solution to stir, and then add The weakly alkaline aqueous solution is stirred. The concrete prepared by the invention not only has good anti-cracking and anti-cracking performance, but also has good strength, and improves the compactness and bonding of the concrete.
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Description

technical field

[0001] The invention relates to the technical field of concrete, in particular to a modified concrete and a preparation method thereof. Background technique

[0002] Concrete is one of the most important civil engineering materials of our time. It is an artificial stone made of cementitious materials, granular aggregates, water, and admixtures and admixtures added when necessary in a certain proportion, uniformly stirred, compacted, cured and hardened. In the process of preparing cement concrete, a large amount of natural sand and gravel need to be used, but these resources are non-renewable resources. Long-term mining and use of natural sand and gravel will cause these non-renewable resources to gradually decrease, even It will affect the ecological environment and cause irreversible damage to the ecology.

[0003] In addition, in the process of pouring and hardening of concrete, due to chemical shrinkage, cold shrinkage, dry shrinkage and other reasons, v...

Claims

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