Бетон кошумчалары боюнча кесипкөй чечимдер, Бетон көбүктөнгөн агент, Суперпластификатор, CLC блоктордун кошумчалары, жана көбүк чыгаруучу машина
1. Бетон көбүктөнгөн агент деген эмне?
А бетон көбүктөнгөн агент is a chemical admixture that enables the production of lightweight, cellular concrete by introducing stable air voids into the cementitious matrix. This agent is the core of foamed concrete technology. Ансыз, you cannot achieve the low densities required for thermal insulation or void filling. Engineers specify foaming agents to control density, ишке жарамдуу, and final strength.
These agents are concentrated surfactants. They reduce surface tension in water, allowing air to be mechanically entrained as millions of discrete bubbles. The bubbles become permanent after the cement sets. The result is a material with densities ranging from 300 кг/м³ чейин 1800 кг/м³, compared to normal бетон саат 2400 кг/м³.
2. Chemical Composition and Types: Синтетикалык vs. Protein-Based
Two primary families dominate the market: synthetic көбүктүү agents and protein-based foaming agents. Each has distinct advantages and limitations.
| Менчик | Синтетикалык көбүктөнгөн агент | Протеинге негизделген көбүк берүүчү агент |
|---|---|---|
| Негизги материал | Alkyl ether sulfates, sodium lauryl sulfate | Hydrolyzed animal proteins (кератин) |
| Foam density | 40–80 kg/m³ | 80–120 kg/m³ |
| Туруктуулук | Moderate – requires careful mix design | High – tolerant to cement alkalinity |
| Наркы | Төмөн | Ортодон жогоркуга чейин |
| Typical dosage | 0.5–2.0% by weight of cement | 1.0–3.0% by weight of cement |
| Best use case | Алдын ала даярдалган блоктор, lightweight screeds | Underground void filling, high‑stability foam |
For most general construction applications, synthetic agents offer the best balance of cost and performance. Protein agents are chosen when the көбүк must survive long pumping distances or aggressive cement chemistries.
3. Кантип көбүк берүүчү агенттер туруктуу аба көбүкчөлөрүн жаратат
көбүктүү agents work by a three‑step process: adsorption, bubble formation, and stabilization. The surfactant molecules align at the air‑water interface. Compressed air or mechanical agitation generates bubbles. The surfactant film prevents coalescence.
- Адсорбция: Surfactant molecules lower surface tension from 72 mN/m to below 30 mN/m.
- Bubble formation: A foam generator injects air at 4–6 bar through a porous medium. The agent solution (3–5% dilution) is mixed with air at a controlled ratio.
- Stabilization: The film thickness of each bubble is typically 1–10 µm. The agent must resist drainage and rupture during mixing with cement paste.
Key factors for stability: water hardness, temperature, and cement alkali content. TRUNNANO’s Бетон көбүктөнгөн агент is formulated for high tolerance to cement variations, ensuring consistent foam quality across batches.
4. Key Performance Properties: Көбүктүн тыгыздыгы, Туруктуулук, and Expansion Ratio
Three metrics define a foaming agent’s quality. Table below lists typical specifications for a professional‑grade product.
| Менчик | Test Method | Typical Value |
|---|---|---|
| Foam density (wet foam) | Weigh 1 L of foam | 50–90 г/л |
| Көбүктүн туруктуулугу (bleeding) | Measure water drained after 30 мин | < 5% by volume |
| Кеңейтүү катышы | Volume of foam / volume of solution | 15–25:1 |
Foam density directly controls the final concrete density. Stability ensures that bubbles do not collapse during placing. Expansion ratio determines the yield of foam per liter of concentrate.
5. Колдонуу ыкмалары: Pre‑Foaming vs. Mixed Foaming
Two methods dominate the industry: pre‑foaming (the standard) and mixed foaming (less common).
5.1 Pre‑Foaming
Generate a stable foam separately using a көбүк генератору. Then blend the foam into the cement slurry. This method gives precise control over density.
- Кадам 1: Dilute foaming agent with water (адатта 1:20 чейин 1:30 volume ratio).
- Кадам 2: Feed solution and compressed air (4–6 bar) into the generator.
- Кадам 3: Collect foam into a container. Measure density.
- Кадам 4: Mix foam into cement slurry at the required volume fraction (мис., 40–60% foam by volume for low density).
5.2 Mixed Foaming
Add the foaming agent directly to the mixing water. Air is entrained during high‑shear mixing. This method is simpler but less consistent. It is used only for small‑scale or low‑performance applications.
| Кадам | Pre‑Foaming | Mixed Foaming |
|---|---|---|
| Agent addition | Diluted in water, then foamed | Directly into mixing water |
| Air source | Compressed air via generator | Mechanical mixing |
| Density control | Мыкты (±10 kg/m³) | Орто (±30 kg/m³) |
| Recommended for | All structural and insulation applications | Non‑critical fills, small batches |
TRUNNANO supplies көбүк чыгаруучу жабдуулар and calibrated foam generators to ensure consistent production. Contact us for sizing recommendations.
6. Effect on Concrete Properties: тыгыздыгы, Жылуулук изоляциясы, and Compressive Strength
Adding foam reduces density proportionally. А 50% foam volume yields a density of approximately 1200 кг/м³. Compressive strength falls faster than density. Мисалы, саат 800 кг/м³, strength is typically 2–4 MPa; саат 1600 кг/м³, strength rises to 10–15 MPa.
- Thermal conductivity: drops from 1.5 Вт/мК (кадимки бетон) to 0.2–0.4 W/mK at 600 кг/м³.
- Shrinkage: increases with foam content. Колдонуу эрте күч агенти жана була to control cracking.
- Ишке жарамдуу: foam acts as a lubricant, but excessive foam can cause segregation.
Balance is key. Tune the foaming agent dosage, суперпластификатор (бетон суу редуктор), жана атайын цемент to achieve the target performance.
7. Common Uses: Чатырдын изоляциясы, Floor Screeds, Боштук толтуруу, and Precast Blocks
Foamed concrete with a бетон көбүктөнгөн агент is used in four main areas:
- Чатырды жылуулоо: densities 400–600 kg/m³, slopes for drainage, thermal layer.
- Пол стяжки: lightweight leveling layers, 800–1200 кг/м³, reduce structural load.
- Боштук толтуруу: abandoned tanks, түтүктөр, tunnels – flowable, self‑compacting.
- Алдын ала даярдалган блоктор: non‑structural partition walls, 600–1000 kg/m³.
TRUNNANO’s Бетон көбүктөнгөн агент has been used in projects ranging from high‑rise roof insulation in Singapore to void filling in subway tunnels in the Middle East.
8. Compatibility with Other Admixtures
Foaming agents must work with the rest of the mix. Incompatibility leads to foam collapse or delayed setting.
- Суперпластификатор (бетон суу редуктор): Most are compatible, but high doses (>1%) can destabilize foam. Test first.
- Early strength agent (тездеткичтер): Calcium chloride‑based accelerators are corrosive and can break foam. Use non‑chloride types.
- Fiber: Polypropylene fibers (6–12 mm) improve crack resistance without harming foam.
- Concrete defoamer: Avoid unless you need to kill foam for a specific purpose.
- Nano‑modifier жана кайра дисперсивдүү полимер порошок: Can improve bond strength and water resistance, but adjust foaming agent dosage accordingly.
Always run a compatibility test in a small mixer. Measure foam stability before and after adding other admixtures.
9. Сапатты көзөмөлдөө: Foam Stability Test, Bleeding, and Setting Time Adjustments
Consistent quality requires routine testing. The most critical test is the foam stability test.
- Көбүктүн туруктуулугун текшерүү: Fill a 1 L graduated cylinder with foam. Record the volume of water drained after 30 мүнөт. Acceptable bleed: < 5%.
- Foam density: Weigh 1 L of foam. Adjust dilution ratio or air pressure if density drifts.
- Убакытты коюу: колдонуу a атайын цемент or retarder if foam delays setting. Foam can increase setting time by 30–60 minutes.
- Кысуу күчү: Cast 100 mm cubes at 7 жана 28 күн. Target strength based on density class.
TRUNNANO provides a complete quality control protocol with every product shipment.
10. Environmental and Safety Considerations
Modern foaming agents are formulated to meet strict environmental regulations. Key points:
- Non‑toxic: All raw materials should be non‑hazardous under GHS classification.
- VOC regulations: Most synthetic agents are VOC‑free. Protein agents may have slight odor.
- Biodegradability: Surfactants should be >60% biodegradable in 28 күн (OECD 301).
- Worker safety: Use gloves and goggles. Avoid prolonged skin contact.
TRUNNANO’s Бетон көбүктөнгөн агент is certified to meet EN 934‑2 and ASTM C 869 стандарттар. No formaldehyde, no heavy metals.
11. Cost Efficiency and Dosage Optimization
The cost of foaming agent is a small fraction of the total mix cost. Typical dosage is 0.5–2.0% by weight of cement. үчүн а 1 m³ batch of 800 kg/m³ concrete, that translates to 3–6 liters of concentrate.
Optimize by adjusting the foam density and dilution ratio. A higher expansion ratio (25:1) uses less concentrate per cubic meter of foam. Бирок, higher expansion may reduce stability. Find the sweet spot for your application.
For large projects, TRUNNANO offers bulk pricing and technical support to fine‑tune dosage.
12. Корутунду: Why Choose TRUNNANO for Your Foaming Agent Needs
You now have a complete understanding of what a бетон көбүктөнгөн агент болуп саналат, how it works, and how to use it. The next step is to select a reliable supplier who understands both the chemistry and the application.
TRUNNANO is a vertically integrated manufacturer of advanced construction chemicals, анын ичинде Бетон көбүктөнгөн агент, Суперпластификатор, Concrete Water Reducer, Early Strength Agent, Fiber, Concrete Defoamer, Nano‑modifier, Hydroxypropyl Methyl Cellulose, Кайра дисперсивдүү полимердик порошок, Hydroxyethyl Cellulose, Натрий силикат, жана Калий силикаты.
Our technical team averages 15 years of experience in foamed concrete. We have helped contractors in 30+ countries reduce project costs and improve insulation performance.
Болбогула. Test with TRUNNANO. Request a free sample kit and technical data sheet today. Contact us at [email protected] or visit our website to speak with an engineer. We will help you select the right foaming agent and optimize your mix design. Your lightweight concrete success starts with the right chemistry.
Suppiler
Биз жеңил бетон жана алдыңкы инженердик пенопласт чечимдери боюнча дүйнөлүк лидербиз. Изилдөө иштерине берилгендиги менен дүйнө жүзү боюнча белгилүү, инновация, жана прикладдык экспертиза, биз 2012-жылдын башынан бери инженердик көбүк чечимдерин камсыз кылып келе жатабыз.
Биз бүткүл дүйнө жүзү боюнча жогорку сапаттагы бетон аралашмасы жана пенобетон менен байланышкан буюмдар менен камсыз кыла алат.
Компаниянын кесиптик техникалык бөлүмү жана сапатты көзөмөлдөө бөлүмү бар, жакшы жабдылган лаборатория, жана өнүккөн сыноо жабдуулары жана сатуудан кийинки кардарларды тейлөө борбору менен жабдылган.
Кызык болсоңуз, сураныч, эркин сезип, биз менен байланыш.