What are the causes and treatment methods of ground sand rise？
Henry Wang
CEO @ Global Marketing Club | Competitive Pricing, Professional Manufacturer | Since 2007, Bridging the gap between 200K+ Chinese manufacturers and overseas buyers.
Reason and treatment of ground sand rise
Concrete sealing and curing agent
Ground sand is refers to the concrete ash on the ground for some reason, no matter how to clean up can not clean up, and then appear the feeling of skin sand phenomenon.Serious stone may appear, which brings great inconvenience to work and life.Therefore, the timely treatment of the ground sand, will extend the service life of the ground, reduce costs.
Reasons for concrete sand rise:
1, water cement ratio is too large: that is, the water content of concrete mixing is large, resulting in bleeding on the concrete surface, reducing the strength of the concrete surface.
2, sand and stone grading is unreasonable, high mud content: aggregate grading is unreasonable, soil sand is too fine, easy to lead to ground sand, affect cement early hydration and concrete condensation.
3, excessive vibration in the construction process: aggravate the concrete surface bleeding, resulting in low strength of the concrete surface.
4, improper maintenance: maintenance is not timely or insufficient, resulting in a large amount of water loss on the concrete surface, surface hydration is not sufficient, resulting in low strength.
5, other reasons: the light time is not good, people can work before the concrete surface reaches a certain strength, low temperature construction of concrete surface ice.In the construction site, the interface agent is often used to stir cement for scraping, hoping to cover the sand-forming part.In fact, this is not the desired effect.Generally after drying, the surface will be a large area of cracking, peeling, shell.This is because the base processing is not good, the base powder.It's completely wrong to think that you can fix it by covering it up.
Ground sand treatment method:
Concrete sealing and hardener can control the problem of sand rise on cement floor.Its main principle is that the final product of complex chemical reaction will block and close the pore of concrete structure, the improvement of strength will bring the improvement of surface hardness, the improvement of compactness will bring the improvement of impermeability.Reducing the path of water flow, that is, reducing the intrusion of harmful substances, thus greatly enhancing the corrosion resistance of concrete to chemical substances.Therefore, concrete sealing hardener can bring long-term sealing, firm, wear-resistant, dust-free concrete surface.
Through a series of complex chemical reactions, compounds infiltrating concrete and semi-hydrated cement, free calcium, silica and other substances contained in solidified concrete produce hard substances, which will eventually improve the concrete surface density, thereby improving the concrete surface strength, hardness, wear resistance and impermeability.
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