
basalt fiber rebar
Product Advantages
- 1天然耐碱:玄武岩纤维本身惰性硅酸盐材料,天然耐碱,强度保留率≥90%
- 2耐高温性能优异:工作温度范围-260℃~+650℃,氧指数≥50,A级防火
- 3绿色环保:100%天然矿物原料,生产能耗仅为碳纤维的1/16,无废气废水排放
- 4与混凝土协同性好:线膨胀系数6~9×10⁻⁶/℃,与混凝土高度匹配
- 5非磁性绝缘:磁化率极低,适用于雷达站、核磁共振等敏感场所
- 6综合性价比高:腐蚀环境下全生命周期成本低于钢筋
参考价格
¥12-30元/根
*具体价格根据规格和数量而定
应用场景
I. Product Overview
玄武岩纤维筋,全称为玄武岩纤维增强树脂基筋材(Basalt Fiber Reinforced Polymer Bar,简称BFRP筋),是以天然玄武岩矿石为唯一原料,经1450℃~1500℃高温熔融、拉丝制成连续玄武岩纤维,再以环氧树脂、乙烯基酯树脂或聚酯树脂为基体,通过拉挤成型工艺生产的一种新型纤维增强复合材料筋材。
BFRP筋是继碳纤维筋(CFRP)、玻璃纤维筋(GFRP)之后发展起来的新一代高性能非金属复合筋材,兼具"高强、耐腐、耐温、环保、经济"五大特性,是海洋工程、化学腐蚀环境、寒冷地区及需要非磁性/绝缘环境中替代钢筋与部分GFRP筋的理想选择。
产品规格范围:直径Φ3mm~Φ50mm,标准长度6m~12m,支持异形件定制。
II. Raw Materials and Manufacturing Process
1. Raw material characteristics of basalt fiber
玄武岩纤维以天然玄武岩矿石为原料(100%天然矿物,无需任何人工调配),经粉碎、筛分、配比后,在1450℃~1500℃的高温熔炉中熔融,通过铂铑合金拉丝漏板高速拉制成连续纤维。单丝直径约7~17μm,呈天然金褐色。
This process preserves basalt fiber's exceptional properties, including high strength, heat resistance, and radiation tolerance derived from natural ore, while ensuring excellent chemical stability. Notably, basalt fiber production consumes only 1/16 of the energy required for carbon fiber and 1/2 of that for steel. With no exhaust gases or wastewater emissions during manufacturing, it is a fully lifecycle green and environmentally friendly material.
2. 拉挤成型工艺
BFRP筋的生产分为四个核心步骤:
Step 1: Fiber Spinning and Impregnation
将玄武岩纤维无捻粗纱从纱架上引出,穿过装有树脂、脱模剂、无机填料、阻燃填料等混合均匀的浸胶槽,使纤维束被树脂充分浸透。
Step 2: High-temperature curing and molding
浸胶后的纤维束通过加热模具进行高温固化,模具内表面加工有反向螺纹槽,在筋材表面直接成型出连续的螺纹纹路,或通过缠绕工艺形成螺旋肋纹。
Step 3: Traction and Cutting
The cured reinforcement is continuously pulled by a牵引 device, cooled and shaped, then automatically cut to the set length. Dimensional tolerance is controlled within ±0.5mm.
Step 4: Surface Treatment (Optional)
对螺纹筋可进一步进行表面喷砂或硅烷偶联处理,使筋材与水泥基体的粘结强度提升40%以上。
3. Material Composition
| Components | Share | 功能 |
|---|---|---|
| 玄武岩连续纤维 | 65%~75% | 主承载增强体,提供抗拉强度 |
| synthetic resin | 25%~35% | Matrix material: binds, transfers load, and protects fibers. |
| 辅助剂 | <3% | 改善界面性能、提高加工性 |
4. 表面形式
| Type | 特点 | Use Cases |
|---|---|---|
| 螺纹筋(A型) | Continuous helical ribs on the surface for superior bond with concrete. | 混凝土结构配筋,应用最广泛 |
| 无螺纹筋(B型/光面筋) | Smooth surface for easy threading | 预应力筋、锚索、特殊工程需求 |
采购建议:与混凝土粘结是BFRP筋设计的核心环节,优先选用带肋筋材。光面筋和带肋筋的粘结性能差距巨大,价差却不大,务必选择带肋产品。
三、产品规格与型号
1. 公称直径规格
玄武岩纤维复合筋的公称直径范围为3mm~50mm,常规规格包括:3mm、6mm、7mm、8mm、10mm、12mm、13mm、14mm、15mm、16mm、18mm、20mm、25mm等。
2. Nominal Size and Allowable Deviations
| 公称直径(mm) | 内径(mm) | 允许偏差(mm) |
|---|---|---|
| 3 | 2.9 | ±0.3 |
| 6 | 5.8 | ±0.3 |
| 10 | 9.6 | ±0.4 |
| 16 | 15.4 | ±0.4 |
| 25 | 24.2 | ±0.5 |
3. 强度等级
| 强度等级 | Tensile Strength Standard Value (MPa) | 拉伸强度范围(MPa) |
|---|---|---|
| BF75 | 750 | 750≤fs<850 |
| BF95 | 950 | 950≤fs<1050 |
| BF115 | 1150 | 1150≤fs<1250 |
| BF135 | 1350 | fs≥1350 |
4. 典型规格技术参数
| Specification Model | 直径(mm) | Ultimate Tensile Strength (kN) | Tensile Strength (MPa) | 弹性模量(GPa) |
|---|---|---|---|---|
| BFRP-6 | 6 | ≥50 | ≥1000 | ≥45 |
| BFRP-10 | 10 | ≥79 | ≥1000 | ≥45 |
| BFRP-16 | 16 | ≥159 | ≥1000 | ≥45 |
| BFRP-20 | 20 | ≥227 | 900~1000 | ≥45 |
| BFRP-25 | 25 | ≥362 | 800~900 | ≥45 |
注:长度可根据工程需要定制,一般为3m~12m,可盘卷供应。
5. Model Naming Convention
玄武岩纤维复合筋的型号应按"复合筋代号—公称直径—类型—树脂类型"的顺序编写。
示例:Epoxy-coated basalt fiber reinforced composite rebar with sandblasted surface and ribs, nominal diameter 1 mm, model "BFCB-10-ASL-ER".
IV. Core Technical Specifications
1. 力学性能
| Performance Metrics | Typical Value | Notes |
|---|---|---|
| Tensile Strength | 800~1800 MPa | 标准产品≥1000MPa |
| Compressive Strength | ≥500 MPa | —— |
| Flexural Strength | ≥1000 MPa | —— |
| Elastic Modulus | 48–65 GPa | 高于GFRP,约为钢的1/4 |
| 断裂伸长率 | >2.0% | 断裂前有一定预兆 |
| 巴氏硬度 | ≥65 HBa | —— |
| 与混凝土粘结强度 | 30 MPa | 带肋产品 |
2. 物理性能
| Performance Metrics | Typical Value |
|---|---|
| Density | 1.9~2.1 g/cm³(约为钢的1/4) |
| 热膨胀系数(纵向) | 6~9×10⁻⁶/℃(与混凝土高度匹配) |
| 长期工作温度 | -50℃~+280℃ |
3. 耐久性能
| 测试项目 | Performance Metrics |
|---|---|
| 耐碱性 | Strength retention ≥85% after soaking in Ca(OH)₂ at 100℃ for 4h |
| 耐酸性 | Minimal mass loss across the entire pH 1–14 range |
| 耐盐雾 | 抗氯离子侵蚀,性能稳定 |
五、核心优势(对比钢筋与玻璃纤维筋)
1. 力学性能优势
| Comparison Criteria | Reinforcing Steel (HRB400) | GFRP bars | BFRP筋 |
|---|---|---|---|
| Density (g/cm³) | 7.85 | 1.9~2.1 | 1.9~2.1 |
| Tensile Strength (MPa) | ≥540 | 600~1000 | 1200~1500+ |
| Modulus of Elasticity (GPa) | 200 | 40~50 | 50~65 |
| 线膨胀系数(/℃) | 11.7×10⁻⁶ | 8~10×10⁻⁶ | 6~9×10⁻⁶ |
| 断裂延伸率 | 16%~20% | 2.0%~3.0% | 2.0%~3.5% |
关键解读:
- 抗拉强度是普通钢筋的2~3倍,强度上完全可以替代甚至超越钢筋
- The elastic modulus is only 1/4~1/5 that of steel reinforcement, resulting in greater deformation under the same load.
- BFRP bars lack a yield plateau; they fail in a brittle manner with no ductile warning prior to sudden fracture, unlike steel reinforcement.
设计启示:BFRP bars cannot be directly substituted on a one-to-one basis; they must be recalculated using design methods specific to BFRP. For applications with stringent deformation control requirements, deflection and crack width must be specifically verified.
2. Durability Advantage (Core Benefit)
In corrosive environments, the durability of BFRP bars is their most fundamental advantage over conventional steel reinforcement:
| Corrosive Environment | Steel Bar Service Life | BFRP Bar Service Life |
|---|---|---|
| 普通大气 | 50+ years | 80+ years |
| Chloride Environment (Seawater/De-icing Salts) | 15–25 | 80+ years, with virtually no degradation |
| 酸性土壤 | 10–20 | 80+ years |
| 碱性混凝土内部 | 50+ years | Lasts as long as concrete |
特别说明:In long-term alkaline environments within concrete (pH=12~13), ordinary glass fiber is susceptible to alkali attack, retaining only about 70% of its strength. In contrast, basalt fiber offers inherent alkali resistance, with strength retention ≥90%. Combined with alkali-resistant resin, BFRP rebar exhibits significantly superior durability in concrete compared to GFRP, with an expected service life of up to 100 years.
3. 耐高低温性能
BFRP筋的工作温度范围极广(-260℃~+650℃),这是其相对于GFRP筋的显著优势:
| 温度场景 | BFRP筋表现 | GFRP Rebar Performance |
|---|---|---|
| Below 200°C | 强度几乎无衰减 | Start to decline noticeably |
| 300℃ | 保持良好 | 大幅衰减 |
| 400℃ | 强度保留率>80% | Severely softened |
| 高温下燃烧特性 | Non-flammable and produces no toxic fumes | 树脂燃烧 |
BFRP筋氧指数≥50,达到A级防火标准。特别适用于高温车间、冷库、隧道防火工程等特殊环境。
4. Excellent compatibility with concrete
- 线膨胀系数匹配:BFRP筋线膨胀系数(6~9×10⁻⁶/℃)与混凝土(7~11×10⁻⁶/℃)极为接近,温度剧烈变化时界面不脱粘,避免内部微裂缝
- 低弹性模量适配:弹性模量(50~65GPa)高于GFRP筋,适度的柔度有助于释放集中应力
5. 安全环保与施工便捷
- Non-magnetic with excellent electromagnetic compatibility:磁化率极低(4π×10⁻⁸ SI),特别适用于雷达站、地磁观测站、医疗核磁共振设备结构等对电磁环境有特殊要求的场所
- Spark-free cutting:可在高瓦斯、易燃易爆环境中安全使用
- 施工便捷:可用金刚石锯片或普通切割机直接切割,无需特殊设备,重量轻(仅为钢筋1/4),人工搬运安装效率提高30%以上
- 绿色环保:以天然玄武岩矿石为原料,生产过程中无挥发性有机物排放,无毒无污染,可回收利用
6. 耐腐蚀性额外说明——BFRP vs GFRP
虽然玻璃纤维锚索(GFRP)和玄武岩纤维筋(BFRP)同属纤维增强复合材料,但两者在耐碱性上存在本质差异:
- GFRP:Fiberglass itself is not alkali-resistant; it relies entirely on the resin matrix for corrosion protection. Once the resin ages or develops localized damage, alkali ions penetrate the fibers, causing rapid strength degradation.
- BFRP:玄武岩纤维本身是惰性硅酸盐材料,天然耐碱。即使树脂表面有轻微划伤,纤维本体在碱性环境中依然稳定
Conclusion:In long-term alkaline environments (such as inside concrete, wastewater treatment tanks, and alkaline soils), BFRP bars offer significantly greater durability than GFRP bars. This advantage is inherent to the material's properties, not merely a result of manufacturing processes.
六、主要工程应用领域
1. Transportation Engineering
- Highway and Railway Bridges: Deck Pavement, Box Girders, Pier Reinforcement, Especially for Sea-Crossing Bridges and Bridges in Saline-Alkali Regions
- Tunnel Engineering: Tunnel lining, invert arch, and advance support can be directly cut through by the shield machine.
- Roadbed Engineering: Slope Reinforcement, Soft Ground Treatment, and Retaining Wall Reinforcement
2. Water Resources and Hydropower, and Marine Engineering
- Reservoir Dam: Dam Face, Spillway, and Energy Dissipation Basin Reinforcement
- 港口码头:码头桩、护岸、防波堤,耐海水腐蚀性能优异
- 输水工程:输水管道、渡槽、水闸,避免锈蚀导致的水质污染
- Offshore Engineering: Offshore Wind Turbine Foundations, Offshore Platforms, Artificial Islands
- 跨海大桥:桥墩及浪溅区,抗氯离子腐蚀,设计寿命100年
3. Construction Engineering
- 地下工程:地下室底板、侧墙、顶板配筋,彻底解决渗漏问题
- 工业建筑:化工厂房、污水处理厂、垃圾焚烧厂等腐蚀环境建筑
- Special buildings: hospitals, laboratories, communication base stations, nuclear power plants, and other structures sensitive to electromagnetic interference.
4. 市政工程
- 地下管廊:管廊主体结构配筋,使用寿命长,无需维护
- 地铁工程:地铁车站、区间隧道衬砌,无电磁干扰
- 城市道路:人行道、非机动车道、检查井周边加固
5. 其他领域
- 矿山工程:巷道支护、边坡加固,切割无火花,安全可靠
- 加固改造工程:既有建筑、桥梁的加固补强
- 寒冷地区工程:与混凝土热膨胀匹配,消除冻融界面破裂
七、工程师与采购商必问的十大核心问题
Question 1: What is the mechanical performance level of BFRP bars? Can they replace steel reinforcement?
抗拉强度够用,但弹性模量是硬伤,不能简单"一对一"替换钢筋。
| 性能参数 | HRB400钢筋 | BFRP筋(典型值) | 对比 |
|---|---|---|---|
| Tensile Strength | 40 MPa | 600~120 MPa | BFRP高50%~200% |
| Elastic Modulus | 200GPa | 40~55GPa | 仅为钢筋的1/4~1/5 |
| 极限伸长率 | 16%~20% | 2.0%~3.5% | BFRP低得多 |
| Density | 7850kg/m³ | 1900~2100kg/m³ | BFRP仅为1/4 |
核心矛盾:强度高但刚度低、延性差。这意味着强度上完全可以替代甚至超越钢筋;但在同样荷载下,BFRP筋的挠度和裂缝宽度会明显大于钢筋混凝土构件;设计时不能直接套用钢筋混凝土规范,必须按BFRP筋专用设计方法重新计算。Conclusion:Performs well in tension scenarios (e.g., slabs and beams with high reinforcement ratios), but requires special verification for applications with stringent deformation control requirements.
问题二:弹性模量只有钢筋的1/4,实际工程中会出什么问题?
这是BFRP筋最大的"阿喀琉斯之踵",也是工程师最该警惕的问题。弹性模量低→刚度低→在同样荷载下变形大:
| Issue | Reinforced Concrete | BFRP筋混凝土 |
|---|---|---|
| 相同荷载下挠度 | Small | 大2~3倍 |
| 裂缝出现时的荷载 | Higher | Lower |
| Crack Width | 容易控制 | Wide cracks that propagate rapidly |
| Failure Mode | 延性破坏(有预兆) | 脆性破坏(突然断裂,无预兆) |
工程对策:增大截面高度(提高刚度);提高配筋率(用更多筋补偿刚度不足);严格控制裂缝宽度验算;关键结构建议采用"BFRP筋+少量钢筋"的混合配筋方案。
问题三:耐腐蚀性真有那么好吗?能用多少年?
这是BFRP筋最硬的底牌,也是它存在的核心理由。
| Corrosive Environment | Steel Bar Service Life | BFRP Bar Service Life |
|---|---|---|
| 普通大气 | 50+ years | 80+ years |
| Chloride Environment (Seawater/De-icing Salts) | 15–25 | 80+ years, with virtually no degradation |
| 酸性土壤 | 10–20 | 80+ years |
| 碱性混凝土内部 | 50+ years | Lasts as long as concrete |
实际案例:青海某盐湖大桥,钢筋5年就开始锈胀开裂,换用BFRP筋后12年无任何腐蚀迹象;广东某跨海大桥引桥,BFRP筋替代钢筋用于浪溅区,设计寿命100年。注意:BFRP bar corrosion resistance does not mean all components are corrosion-resistant. Metal anchorages and connectors remain weak points and require complementary anti-corrosion measures.
问题四:耐高温吗?防火性能如何?
Better than GFRP, but still a resin-based material with temperature limits.
| resin system | Long-term operating temperature | Short-term temperature resistance | Notes |
|---|---|---|---|
| 乙烯基酯树脂 | 120~150℃ | 200℃ | BFRP bars: the industry standard |
| 环氧树脂 | 100~130℃ | 180℃ | 性能好但成本高 |
| 酚醛树脂 | 150~200℃ | 250℃ | Best temperature resistance but high brittleness. |
玄武岩纤维本身可耐700℃以上,远高于玻璃纤维(约500℃)。所以BFRP筋的耐温瓶颈不在纤维,在树脂。防火设计要点:普通建筑(室内温度<60℃):完全没问题;火灾场景:树脂在300℃以上会分解,筋体强度急剧下降;规范要求:BFRP筋混凝土构件需满足耐火极限要求,通常需增加保护层厚度或涂刷防火涂料。
问题五:怎么施工?能弯折吗?能焊接吗?
不能焊接,弯折有严格限制,施工工艺与钢筋差异很大。
| 操作 | steel reinforcement | BFRP筋 |
|---|---|---|
| 切割 | 砂轮切割机 | Grinding Wheel Cutter / Diamond Saw Blade |
| Bend | 可冷弯90°、180° | Minimum bending radius ≥ 15d; do not bend repeatedly. |
| 焊接 | Yes | 绝对不可以the resin will burn and decompose |
| Tie | Wire binding | 尼龙扎带/塑料扎带(铁丝会划伤表面) |
| Lap | Yes | 不推荐,须用专用机械连接器或搭接长度≥50d |
High-Risk Areas for Construction Pitfalls:工人习惯用钢筋钳弯折BFRP筋→直接折断或产生微裂纹→强度骤降;用铁丝绑扎→铁丝尖端嵌入筋体表面→应力集中点→提前断裂;切割时不加水冷却→树脂过热→切口处强度损失30%以上。采购建议:Select a supplier that can provide on-site technical guidance, or require the supplier to conduct specialized training for the construction team.
Question 6: How is the bond performance with concrete? Is slippage possible?
This is the most overlooked critical performance of BFRP bars and a mandatory item for specialized verification in design. Due to their smooth surface (resin matrix), the bond strength between BFRP bars and concrete is only 60%~70% that of steel reinforcement:
| 对比项 | steel reinforcement | BFRP筋 |
|---|---|---|
| Bonding mechanism | 机械咬合+摩擦+化学胶结 | Primarily relies on mechanical interlocking (surface ribs) |
| Bond Strength | High | 偏低,约为钢筋的60%~70% |
| Bond-slip curve | 有明显屈服段 | 无屈服段,滑移后快速脱粘 |
工程对策:优先选用带肋(表面有螺旋肋或砂包覆)的BFRP筋,粘结力可提升30%~50%;锚固长度需比钢筋增大40%~60%;搭接长度需≥50d(d为筋径),远大于钢筋的35d;末端做90°弯钩可有效改善锚固。
Question 7: Is it expensive? How does the total cost compare to steel reinforcement?
Material unit cost is 2–4 times that of steel, but total cost can be lower in specific scenarios.
| 对比项 | steel reinforcement | BFRP筋 |
|---|---|---|
| Unit Price of Material | 3500~4500 CNY/ton | 12000~30000 CNY/ton |
| 运输成本 | 重 | 轻75%,运费低 |
| 施工人工 | 需多人、需焊接 | Single-operator; efficiency ↑30% |
| Maintenance Cost | 定期除锈、修补 | 零维护 |
| Total Cost of Ownership (Corrosive Environment) | 高(需更换) | 低(一次投入,终身免维护) |
什么场景综合成本更低?氯盐腐蚀环境(跨海大桥、除冰盐道路)→ BFRP筋胜出;高湿度隧道、污水处理厂→ BFRP筋胜出;普通室内建筑→ 钢筋仍然更经济。Conclusion:Don't just look at material unit prices—calculate the total lifecycle cost. Corrosive environments are where BFRP bars truly excel.
Question 8: Is there a national standard? What is the design basis?
There are standards, but the system is not as mature as that for steel reinforcement—this is why many engineers hesitate.
| Standard Number | Name | 状态 |
|---|---|---|
| GB/T 38968-2020 | Fiber-Reinforced Polymer Bars | 现行国标,覆盖BFRP/GFRP/CFRP |
| GB 50608-2020 | Technical Standard for Engineering Application of Fiber-Reinforced Polymer Composites | 现行,设计依据 |
| T/CECS 10117-2021 | 《玄武岩纤维筋混凝土结构技术规程》 | Group standards, more detailed |
| ACI 440.1R-15 | 美国FRP筋设计指南 | International Reference |
| CSA S807 | 加拿大FRP筋设计标准 | International Reference |
Real-world situation:While national standards are in place, acceptance by local design institutes varies; many projects still require specialized justification or expert review. Some regions have already issued local technical guidelines (e.g., coastal provinces like Guangdong and Fujian are advancing rapidly).采购建议:要求供应商能提供符合GB/T 38968的全套检测报告,且最好有已完工项目的设计验收案例可查。
问题九:长期蠕变和疲劳性能如何?50年后还靠得住吗?
这是所有纤维筋的共同软肋,BFRP比GFRP略好,但仍需谨慎。
| Performance | steel reinforcement | BFRP筋 | 说明 |
|---|---|---|---|
| 蠕变 | 极小 | 明显,约为瞬时应变的1.5~2倍 | Deformation continues to increase under sustained load. |
| 疲劳 | 优良(有S-N曲线) | Poor; no clear fatigue limit | 反复荷载下需降额使用 |
| stress relaxation | Small | 较大,约损失初始应力的10%~20% | 预应力场景需特别注意 |
50 Year Forecast:玄武岩纤维本身几乎不老化(天然矿物,不像玻纤有碱腐蚀问题);但树脂基体在紫外线+湿热条件下会缓慢老化;选用乙烯基酯树脂+表面防护涂层,可将老化速率控制在每10年强度损失<5%。Conclusion:BFRP筋的长期性能数据仍在积累中,保守设计应取强度折减系数0.6~0.75。不建议在不可维修的关键结构中单独使用。
问题十:什么场景最适合用BFRP筋?什么场景千万别用?
This is the ultimate question in procurement decisions.
| ✅ Best use cases | ❌ 不推荐的场景 |
|---|---|
| Offshore bridges, seawater environments | 高温车间(>120℃持续) |
| 除冰盐道路桥面 | 需要大变形延性的抗震结构(单独使用) |
| 污水处理厂、化工池 | 消防要求极高且无防火措施的建筑 |
| 隧道二衬(潮湿环境) | 需要反复弯折加工的预制构件 |
| 临时结构(可回收) | 预应力主梁(蠕变+松弛问题) |
| Sub-ballast Layer for Railways (Insulation Required) | Small-scale low-cost civilian buildings (cost-ineffective) |
最有性价比的"甜蜜点":氯盐腐蚀环境 + 中等跨度梁板 + 对变形控制要求不极端 → BFRP筋的绝对主场。
八、与钢筋、GFRP筋的综合对比总览
| Performance Metrics | Reinforcing Steel (HRB400) | GFRP bars | BFRP筋(玄武岩) |
|---|---|---|---|
| Density (g/cm³) | 7.85 | 1.9~2.1 | 1.9~2.1 |
| Tensile Strength (MPa) | ≥540 | 600~1000 | 1200~1500+ |
| Modulus of Elasticity (GPa) | 200 | 40~50 | 50~65 |
| 线膨胀系数(/℃) | 11.7×10⁻⁶ | 8~10×10⁻⁶ | 6~9×10⁻⁶ |
| 耐碱性能 | Poor (Rusty) | 需树脂保护 | 天然耐碱,更强 |
| 长期耐温(℃) | 400软化 | Book 150 | Book 300 |
| 磁性 | 强磁性 | 无磁 | 无磁 |
| 环保性 | 高能耗 | Medium Energy Consumption | 低能耗,天然矿物 |
| 断裂模式 | Ductile (with yield) | Brittleness | Brittleness |
9. Construction and Storage & Transportation Guidelines
1. 常规施工流程
- Cutting:根据设计长度使用专用切割锯切割,Do not use gas cutting
- Tie:使用尼龙扎带或专用绑扎带绑扎,禁止使用铁丝(铁丝会划伤筋材表面,形成应力集中点)
- Install:按照设计要求安装筋材,确保保护层厚度符合规定
- Concrete Pouring:浇筑混凝土时避免振捣棒直接撞击筋材
- 养护:Cure according to standard concrete curing requirements.
2. 关键注意事项
- BFRP bars cannot withstand excessive transverse or shear forces. Avoid bending and impact during handling and installation.
- The bending radius should not be less than 15 times the rib diameter. Right-angle bends are prohibited.
- 张拉时应使用专用的BFRP筋张拉设备和锚具,禁止使用钢筋锚具
- 存放时应避免阳光直射和雨淋,防止树脂老化,存放期不宜超过6个月
- 切割筋材时应佩戴防护眼镜和口罩,防止纤维碎屑进入眼睛和呼吸道
3. 设计提醒
BFRP bars are linear elastic and brittle, with no yield plateau prior to failure. Design uses a strength reduction factor, and these bars must not be used in seismic-critical components requiring ductile energy dissipation unless specially designed. Splicing requires dedicated couplers or binding straps; bending must be factory-preformed—field bending is strictly prohibited.
10. Execution Standard
| 标准号 | Standard Name | 适用范围 |
|---|---|---|
| GB/T 39489-2020 | 《玄武岩纤维增强树脂基筋材》 | Product National Standards |
| GB 50608-2020 | Technical Standard for Engineering Application of Fiber-Reinforced Polymer Composites | 工程建设技术规范 |
| JG/T 406-2013 | Fiber-Reinforced Polymer Bars for Civil Engineering Applications | 参考标准 |
| T/CWEC 47-2024 | 《玻璃纤维锚杆支护工程技术规范》 | Group Standard |
| DB32/T 4783-2024 | Technical Specification for Application of Fiber-Reinforced Polymer Bars in Excavation Engineering | 地方标准 |
十一、购买建议:为何选择安徽森德新材料科技发展有限公司?
在公路桥梁、海洋工程、地下管廊及高腐蚀环境中,玄武岩纤维筋(BFRP筋)凭借轻质高强、极致防腐等特性,正成为传统钢筋的升级替代品。作为专业的新型复合材料制造商,安徽森德新材料科技发展有限公司凭借以下核心优势,成为您采购玄武岩纤维筋的理想之选:
1. 原生材质,极致防腐抗拉
精选优质玄武岩纤维与高性能树脂复合,产品抗拉强度远超同规格普通钢筋。更重要的是,它具备天然的不生锈、耐酸碱、耐盐雾特性,从根本上解决工程结构因钢筋腐蚀导致的劣化难题,大幅延长工程使用寿命。
2. 工艺领先,握裹力强且稳定
依托先进的自动化拉挤生产线与严苛的质量检验体系,确保纤维筋表面肋型清晰饱满,与混凝土的握裹力(粘结锚固力)优异。批次产品力学性能高度稳定,杜绝质量波动。
3. 轻质绝缘,施工便捷高效
重量仅为同体积钢筋的1/4左右,现场搬运与绑扎极其轻便,大幅降低人工成本;同时具备良好的非磁性和电绝缘性,完美满足地铁、医院、变电站等特殊工程对抗电磁干扰的需求。
4. Factory-direct supply with worry-free customization and service
提供多种直径、表面肋型及力学性能指标的定制生产服务,精准匹配不同项目需求。专业技术团队提供从前期选型、方案优化到施工指导的一站式服务,让采购与施工省时、省心、省力。
选择安徽森德新材料科技发展有限公司,就是选择了经久耐用的工程质量与高效省心的合作体验。公司以硬核的新材料实力,为您的百年工程保驾护航!
一句话总结:BFRP筋不是钢筋的"升级版",而是钢筋在腐蚀环境下的专属替代方案。强度有余、刚度不足、延性偏低——把这三点吃透,选带肋筋、选乙烯基酯树脂、配专用连接器、做好防火验算,这四步做到位,它就是腐蚀环境里最省心、最耐久的那根筋。
