Overview
Inorganic fireproof grout is a high-performance construction material engineered to prevent fire and smoke propagation through gaps in walls, floors, and service penetrations. Unlike organic alternatives, it relies on cementitious binders and mineral aggregates, ensuring non-combustibility and environmental safety. Its primary function is to expand when exposed to heat, creating an insulating char layer that blocks flames and reduces heat transfer. Developed to comply with international fire safety codes, this material is critical in passive fire protection systems. It is commonly specified in commercial high-rises, data centers, and infrastructure projects where compartmentalization is mandatory. The grout is typically supplied as a dry powder and mixed on-site with water for application.
Physical and Chemical Properties
The grout exhibits exceptional thermal stability, maintaining structural integrity at temperatures exceeding 1000°C. Its expansion ratio under heat ranges from 2–5 times the original volume, depending on formulation. The cured material has low thermal conductivity (0.1–0.3 W/m·K), effectively slowing heat transfer to protected structures. Chemically, it is alkali-activated with a pH of 10–12 in slurry form, requiring proper handling precautions. The hardened grout demonstrates compressive strengths of 15–30 MPa, ensuring mechanical durability alongside fire resistance. Key additives may include vermiculite, perlite, or alumina silicates to enhance refractory performance.
Main Applications
In construction, the grout is primarily used to seal openings around HVAC ducts, electrical conduits, and plumbing penetrations in fire-rated walls and floors. It is mandatory in firestop systems for steel structures in industrial plants, where it prevents heat-induced structural deformation. The tunnel industry relies on it for segment joints and emergency exit seals, as it can withstand prolonged hydrocarbon fires (e.g., RWS curve conditions). Energy sector applications include sealing around combustible pipework in power plants and oil refineries. Recent innovations have expanded its use in modular construction for prefabricated fire barriers.
Safety and Storage
While non-toxic when cured, the dry powder requires precautions during handling to avoid respiratory irritation. Workspaces should have adequate ventilation, and PPE (gloves, N95 masks) is recommended. Spills should be cleaned immediately to prevent slip hazards. Storage life is typically 12 months in original, unopened packaging at temperatures below 30°C. Moisture exposure causes premature setting and must be avoided. Bulk shipments should be palletized and covered with waterproof tarpaulins during transit. Disposal follows standard cementitious waste regulations.
B2B Procurement Guide
Commercial buyers should prioritize suppliers with third-party certifications like UL or ETA listings for fire performance. Key specifications to verify include fire endurance duration (e.g., 2-hour or 4-hour ratings) and compatibility with adjacent materials (e.g., concrete, steel). Large projects benefit from pre-mix quality testing and batch traceability documentation. Regional availability of raw materials may affect lead times—European and Chinese manufacturers dominate global supply. For cost efficiency, consider bulk purchases with tiered pricing; however, ensure proper storage facilities are available to prevent material degradation.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：路面修补料、M50孔道压浆料、双组份粘钢胶、高强无收缩灌浆料、水下不分散灌浆料、支座灌浆料、TGRM防水灌浆料、风电灌浆料、地脚螺栓灌浆料、塔筒环氧粘钢胶、环氧树脂伸缩缝混凝土、环氧植筋胶、盾构注浆料、混凝土色差修补剂、环氧修补砂浆、环氧灌注胶、低强度水下不分散混凝土
- 主营：加固砂浆、修补砂浆、环氧修补砂浆、灌浆料、风电灌浆料、CGM高强无收缩灌浆料、C40灌浆料、C50灌浆料、60灌浆料、设备基础灌浆料、桥梁加固灌浆料、机器底座灌浆料、C80灌浆料、预应力管道压浆料、水泥基修补材料、水泥路面漏石子修复、压浆料、碳布胶、碳布、植筋胶、粘钢胶、灌浆树脂、干混砂浆、路面修补料
- 主营：防水sbs、玻纤瓦、沥青sbs、无机修补胶泥、沥青胶、prm防水、油毡瓦、eva防水、k11防水、pvc防水、沥青瓦、屋面板、eva高铁、涂料k11、卷材sbs、聚乙烯、hdpe防水、fyt1防水、卷材1卷、pvcs防水、hut1防水、pe高分子、pe膜防水、聚氯乙烯、县sbs防水、卷材先做
- 主营：sbs卷材、卷材app、油毡瓦、轻质环氧灌浆料、卷材eva、号沥青、贴缝带、外墙面、pvc自黏、聚氨酯、pvc防水、10#沥青、防水sbs、彩钢顶、玻纤瓦、抗裂贴、沥青瓦、沙皮瓦、eva防水、tss防水、hdpe防水、卷材p类、卷材l类、isbs防水、卷材sbpe、pe膜防水
- 主营：防水sbs、玻纤瓦、tpz防水、支座型灌浆料、瓦油毡、bac自粘、卷材sam、eva防水、彩钢瓦、卷材tpo、k11防水、高分子、pvc防水、沥青瓦、eva自粘、pet自粘、hdpe防水、fyt1防水、tpob防水、聚氯乙烯、卷材包工、水泥路面、彩油毡瓦、水卷卷材、聚酯复合、反应粘结
- 主营：修补加固砂浆、湿法喷射砂浆、高效防水剂、早强高强灌浆料、钢筋套筒连接灌浆料、支座砂浆支座灌浆料、通用灌浆料、通用早强高强灌浆料、低温装配式灌浆料、隧道孔道灌浆料、高强快速修补料、高强修补料、装配式座浆封浆封堵料、高延性混凝土I型、高延性混凝土II型、高延性混凝土III型、高强度孔道压浆料、公路桥梁座浆料、管道填充座浆料、轨道交通座浆料、预制桥梁压浆料、改性高强聚合物砂浆、聚合物修补加固砂浆、高强度装配式座浆料
- 主营：加剂瓷砖胶、快速修补料、轻质抹灰石膏、无收缩灌浆料、水泥基灌浆料、灌浆料、工业灌浆料、建筑灌浆料、高强无收缩灌浆料、混凝土修补灌浆料、绿色金刚砂地坪、路面修补料、水泥路面修补料、轻质石膏抹灰、粉刷石膏、面层抹灰石膏、抗裂抹灰石膏、瓷砖胶、金刚砂地坪、金刚砂骨料、水泥道路快速修补料、轻质石膏砂浆、石膏抹灰砂浆、轻质石膏、抹灰石膏
- 主营：水性防锈漆、防腐防锈水性漆、铁锈转化剂、灌浆料、彩钢瓦翻新防锈漆、隔音吸音材料、吸音阻燃涂料、外墙保温涂料、桥面防水、路桥防水、背水面防水、背水面补漏、外露型防水、红橡胶防水
- 主营：灌浆料、压浆料、防水砂浆、修补砂浆
- 主营：灌浆料、防冲击服、矿用封孔材料
- 主营：高延性混凝土、公路压浆料、聚合物修补砂浆、C60灌浆料、高强无收缩灌浆料、无收缩灌浆料、海上风电专用水下抗分散灌浆料、装配式专用套筒灌浆料、海上风电专用高强无收缩灌浆料、灌浆料、加固型灌浆料、混凝土灌浆料、早强高强无收缩灌浆料、封锚砂浆、微膨胀注浆料、超早强道路修补料、铁路压浆料、高强抗裂砂浆、环氧树脂砂浆、超高性能混凝土、装配式专用座浆料、重力砂浆、硅烷浸渍、渗透结晶防水涂料、特种砂浆
- 主营：耐火可塑料、耐火浇注料、保温浇注料、无机玻化微珠、高温抹面料、稀土保温涂料、海泡石保温涂料、硅酸盐保温涂料、玻化微珠保温砂浆、高温粘合剂、稀土抹面料、FTC保温砂浆、微膨胀耐火可塑料、复合硅酸盐保温涂料、轻质保温浇注料、石棉水泥、FBT稀土保温涂料、保温抹面料、轻质隔热浇注料
- 主营：水性纳米中空玻璃微珠保温隔热材料、气凝胶、气凝胶保温涂料、无机硅声能凝胶、2H隔热保温全效凝胶、保温找平凝胶、隔音涂料、反辐射隔热涂料、回填宝、桥面防水涂料、硅烷浸渍剂、硅烷浸渍膏体、红橡胶防水涂料、防水涂料、环氧防腐涂料、自粘防水卷材、PVC防水卷材、耐根穿刺防水卷材、fyt-1、AMP-100、保温凝胶、乙烯基酯防腐涂料、环氧玻璃鳞片防腐涂料、氰凝防腐涂料、TPO防水卷材
- 主营：游泳池防水、电梯井防水、补漏防水、灌浆料、伸缩缝堵漏、地下室防水、注浆防水堵漏、地下室车库堵漏、屋顶堵漏、防水施工、阳台堵漏、墙面防水
- 主营：聚丙烯纤维、纤维素纤维、玄武岩纤维、灌浆料、短切玻璃纤维、聚酯纤维、抗裂纤维、聚乙烯醇纤维、水泥砂浆纤维、增强抗裂纤维、聚丙烯网状纤维、菱形仿钢纤维、波浪形仿钢纤维、混凝土砂浆纤维、沥青路面纤维、钢纤维、仿钢纤维、玻璃纤维、工程纤维、塑料纤维、混凝土纤维、防裂纤维、合成纤维
- 主营：高效减水剂、自流平水泥砂浆、环氧修补砂浆、高强无收缩灌浆料、桥梁支座灌浆料、铝酸盐无机防腐砂浆、自密实细石混凝土、高延性混凝土、混凝土膨胀剂、抗渗防水剂、路面快速修补砂浆、速凝剂、混凝土早强剂、防水涂料、聚合物防水抗裂砂浆、聚合物水泥砂浆、混凝土防腐阻锈剂、混凝土色差修复剂、环氧树脂、隧道微膨胀注浆料、混凝土保护剂、金刚砂耐磨材料、防静电不发火砂浆、结构立面修补砂浆、水下不抗分散混凝土剂
- 主营：灌浆料、防水防腐保温隔热涂料
- 主营：TD道钉锚固剂、聚合物砂浆、ECM环氧修补砂浆、环氧灌浆料、支座灌浆料、C110灌浆料、C80灌浆料、快速道路修补料、改性聚合物水泥砂浆、RC聚合物加固砂浆、水泥基渗透结晶、碳纤维布、混凝土表面增强剂、2#胶晶、自密实混凝土、高强耐磨料、高强修补砂浆、灌浆树脂胶、灌注粘钢胶、环氧界面剂、环氧树脂胶泥、锚固剂、环氧砂浆、路面薄层修补料