1. High-performance water reducer
Polycarboxylic acid water reducer
Function: Through molecular structure design, high dispersibility is achieved, which significantly reduces the water consumption of concrete (water reduction rate can reach 30%-40%), and at the same time greatly improves fluidity and strength, which is suitable for high-strength, self-compacting concrete5.
Advantages: Environmental protection, low dosage (0.1%-0.3%), and wider adaptability to cement, reducing concrete bleeding and segregation.
Modified lignin sulfonate water reducer
Function: Add chemical modification on the basis of traditional lignin sulfonate, with both water reduction and retarding functions, suitable for large-volume concrete, reduce hydration heat temperature rise, and reduce temperature cracks.
2. Environmentally friendly mineral admixtures
Nano silicon powder
Function: Active silicon material with extremely small particle size fills the micropores of concrete and participates in the hydration reaction to generate more C-S-H gel, significantly improving density, impermeability and chemical corrosion resistance.
Application: Used in concrete structures in harsh environments such as marine engineering and nuclear power plants.
Industrial solid waste derived admixtures
Type: Steel slag powder, lithium slag powder, etc.
Function: Replace part of cement and reduce carbon emissions; enhance later strength, improve durability, and inhibit alkali-aggregate reaction18.
3. Functional composite additives
Self-repairing additives
Mechanism: Add microorganisms (such as Bacillus) or encapsulated repair agents to release repair substances (such as calcium carbonate) when concrete cracks to fill cracks.
Function: Extend the life of the structure and reduce maintenance costs. It is suitable for underground projects and bridges.
Intelligent temperature control additives
Type: Phase change material (PCM) composite agent.
Function: Regulate the internal temperature of concrete by absorbing/releasing heat to reduce temperature stress cracks. It is suitable for large-volume concrete and extreme climate areas8.
4. Durability enhancer
Anti-chloride ion penetration agent
Function: Form a dense interface layer to block chloride ion erosion, significantly improving the durability of concrete in marine environment or saline-alkali areas.
Graphene-based enhancer
Function: Utilize the high strength and conductivity of graphene to improve the crack resistance and freeze-thaw resistance of concrete, and give it a conductive function (can be used for snow-melting pavement)
5. Green and low-carbon additives
Carbon dioxide mineralizer
Function: Inject industrial carbon dioxide into concrete and react with cement hydration products to form calcium carbonate, which not only fixes carbon but also improves early strength and reduces cement consumption8.
Case: Application in Qingdao Metro Project, reducing carbon emissions by 15%-20%8.
Biological-based plasticizer
Raw materials: Plant extracts (such as starch derivatives).
Function: Replace traditional petroleum-based plasticizers, improve concrete working performance, and reduce environmental pollution.
6. Special additives for special scenarios
Underwater anti-dispersant
Function: Increase the cohesiveness of concrete, prevent cement slurry loss during underwater pouring, ensure structural integrity, and be used for submarine tunnel and dam repair.
Low-temperature early strength agent
Composition: Calcium nitrate, sodium nitrite complex.
Function: Promote hydration reaction in an environment below -10℃, shorten the maintenance cycle, and ensure the quality of winter construction
New concrete additives are developing towards high performance, functional composite, green and low-carbon. In practical applications, please note:
Compatibility test: Before mixing different additives, the synergistic effect needs to be verified to avoid performance conflicts
Cost-benefit analysis: For example, although nanomaterials have excellent performance, they are more expensive and need to be selected in combination with engineering needs15.
Standard compliance: Refer to the latest national standards (such as GB 8076-2024) to ensure the safety and compliance of additives
You can browse the relevant product links in our website for more information.
DS-3 Retarding Water-reducer
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Contact: Ricky Li
Whatsapp: +86 152 5199 6760
Wechat: +86 152 5199 6760
Email: rickyli@hydget.com
