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Low-heat, micro-expansive cement—special cement for compensating shrinkage in mass concrete
Main business：Building, infrastructure, industrial, mining, marine engineering, military engineering, expressway, tunnel, bridge, concrete repair, installation of large-scale mechanical equipment, wind power equipment, foundation bolt fixing, etc. High-performance, early-strength, micro-expansion, self-compacting, large-flow leveling, rapid repair cement grouting material
- Commodity name： Low-heat, micro-expansive cement—special cement for compensating shrinkage in mass concrete
- Description
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1. Packaging and Logistics Delivery Date Guarantee
Packaging Three-ply film-composite bag Specifications 25KG/ bag Volume 60*40*15 cm³ Minimum order quantity 1000KG Minimum order quantity Delivery date 1-7 Workday Shelf life Dry and well-ventilated 180 days Transaction method FOB/EXW Payment method Telegraphic Transfer / Letter of Credit Ship goods FOB Shanghai / Ningbo 2. Product Description
Low-heat, micro-expansive cement is a special type of cement with outstanding performance characteristics. Its key feature is that it generates relatively low heat during production, thereby reducing temperature stresses that may arise during the cement’s setting process. In addition, this cement exhibits micro-expansive properties, which can partially compensate for concrete shrinkage and enhance structural stability. This type of cement is suitable for a wide range of applications, such as bridge construction and the foundations of large-scale buildings—places that demand high durability and stability. Compared to ordinary cement, low-heat, micro-expansive cement maintains stable performance under various environmental conditions, effectively avoiding adverse effects caused by temperature fluctuations. In short, thanks to its unique advantages, low-heat, micro-expansive cement plays an important role in the construction industry.
3. Performance Features
● Low heat of hydration:
The hydration process releases relatively little heat, effectively reducing cracks in large-volume concrete caused by temperature stresses.
● Micro-expansive property
During the hardening process, a moderate volume expansion occurs, which can compensate for the drying shrinkage and thermal contraction of concrete, thereby enhancing its compactness and crack resistance.
● Reasonable strength development:
Early strength is moderate, and late-stage strength continues to increase, meeting the strength requirements of engineering structures.
● Good durability:
It exhibits excellent impermeability and freeze-thaw resistance, which can extend the service life of concrete structures.
4. Application scenarios
● Mass concrete works:
For structures such as dams, large foundations, and bridge piers, their low thermal properties can be leveraged to reduce temperature-induced cracking.
● Waterproofing works:
Thanks to its micro-expansion property, it enhances the compactness of concrete and is suitable for waterproofing applications such as basements and swimming pools.
● Repair work:
It can be used for repairing concrete structures, reducing the shrinkage differential between the repaired area and the original structure.
5. Success Stories
6. Technical Indicators
Specific surface area ≥300 m³/kg Setting time Initial setting ≥ 45 min Final setting ≤ 12 h Stability Boiling method qualified Linear expansion coefficient 1d ≥ 0.05% 7d ≥ 0.10% Chloride ion ≤0.06% Alkali content Qualified Strength Grade 32.5 Hydration heat 3d ≤ 185 kJ/kg 3d ≤ 220 kJ/kg Flexural resistance ≥7.0 MPa Stress-resistant ≥32.5 MPa 7. Construction Method
8. Precautions for Use
Construction environment temperature: -5°C to 35°C. The water-to-cement ratio is an important performance indicator for this product. Please add water according to the manufacturer’s specified water-to-cement ratio, and use mechanical mixing equipment to ensure thorough and uniform blending before construction! If the water-to-cement ratio is improperly adjusted, it may affect the product’s performance. This product is a finished item—do not add any other substances arbitrarily, as this could compromise its functionality and quality system! If this product has expired, do not reuse it. After mixing, any leftover material that has not been used must never be combined with fresh material for further use! When carrying out outdoor construction in rainy weather, a rain shelter should be set up. The mixed material must be used within 30 minutes; once the initial setting time has passed, the slurry will begin to set and lose its effectiveness! Once the package is opened, the contents must be used up in one go to prevent moisture absorption and clumping.
8. Reasons to Choose Us
- Our company has a professional technical R&D team that provides free assistance in resolving all technical challenges you may encounter during construction.
- The raw materials used in our company’s products undergo rigorous screening, and we carefully select imported admixtures that are scientifically proportioned. The quality mix ratio error after three stages of processing does not exceed one-thousandth, ensuring that the product’s functional characteristics meet the diverse application needs of our customers.
- High cost performance: Choose our company’s products. You’ll save 50% on labor, 50% on materials, and 50% on time—boosting construction efficiency and delivering significant economic benefits. We’ll ensure the quality of your project, giving you peace of mind and eliminating any future worries.
- Provide third-party type test reports, certificates of conformity, warranty certificates, special invoices, MSDS, and TCIR.
- Qualification Certifications: CCC, CMA, CNAS, ISO9001, CE/FCC; Product Implementation Standard GB/T 2938-2008
- We have successful track records in the supply chain for large-scale onshore and offshore wind power projects both domestically and internationally. Quality commitment guaranteed!
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