【执行标准】：GB28375-2012

【产品名称】：隧道防火涂料

【英文名称】：Tunnel fire coatings

1. Construction equipment:

Squeezing type slurry pump or spray gun spraying machine, air compressor, plastering board, trowel, cleaning machine, transportation tool, etc

2. Construction preparation:

① Build scaffolding or use engineering mobile vehicles

② Electricity, water, and pathways

③ Remove oil stains, floating dust, etc. from the tunnel foundation surface

④ Correction of uneven surface joints

⑤ Repair the leaking area and ensure waterproofing and leak repair

3. Construction environmentConstruction temperature ≥ 5 ℃, relative humidity ＜ 90%, wind speed ≤ 4 levels; When the wind force is greater than level 4, the tunnel needs to be sealed or blocked; 

When the construction is carried out at 0 ℃ -5 ℃, antifreeze agent needs to be added

4. Grassroots construction:① The coating is a single component, and the first roughening is required to clean the oil stain and dust on the surface. The roughening process powder: special lotion=100:20, add water to 

make thin and thick, and roll coating can be evenly sprayed, with a thickness of about 2-5 mm.② The second round of construction involves pulling and drying before spraying. The ratio of powder to water is approximately 1:1 (by mass) on site, and it is recommended to mix it evenly 

with a mixer. The mixed coating should be used within 60 minutes, and sprayed from the waist of the tunnel using a spraying machine from bottom to top, with a recommended thickness of 

5-20mm. Multiple spraying can also be carried out until the design thickness is reached. If flatness is required, the last layer of construction can be carried out using the wiping method. It is 

recommended to stick nails and hang nets with a thickness of 20mm or more. If there are special requirements for a thickness of 5mm or more, nails and hanging nets or pasting nets can also 

be used.

5. Surface requirements for decorative construction:

After the base layer is completely dry, that is, when the hand cannot "pick" it, about 3 days later, the surface can be sprayed with decorative decorative fireproof coating. For key projects, 

it is best to scrape the fireproof coating once to level it. Can be sprayed or scraped.

6. Maintenance: After construction is completed, regular natural maintenance is carried out for 30 days, with maintenance conditions similar to ordinary concrete. If there is any artificial damage to the coating, it should be repaired in a timely manner.

matters needing attention:

1. This product cannot be mixed with other coatings or paints.

2. During construction, it is not advisable to mix too many ingredients at a time. Mix as much as you need. Unused paint must be sealed and stored; 

Once the powder is opened, it should be used immediately to avoid moisture and clumping, and cannot be used.

3. The paint should be stored in an environment of 5-35 ℃, and freezing and exposure to sunlight are strictly prohibited.

4. Powder that has been left for too long and has begun to harden should not be reused.

Packaging and Storage:

1. Powder should not be exposed to rain, water, or sunlight, and should be placed in a dry and well ventilated place;

2. Liquid materials should be protected from exposure to sunlight and rain, and should not be stored below 0 ℃. They have a shelf life of six months and should be transported

 as general materials.

1、施工机具：

     挤压式压浆泵或喷枪喷涂机、空压机、抹涂板、抹子、清洗机、运输工具等

2、施工准备：

     ①搭建脚手架或使用工程移动车

     ②通电、通水、通路

     ③去除隧道基面油污、浮尘等

     ④对凹凸不平的表面接缝处修正

     ⑤漏水的地方修补做好防水补漏

3、施工环境

     施工温度≥5℃，相对湿度＜90%，风力≤4级；当风力＞4级时，需封洞或遮挡；当施工在0℃-5℃时，需添加防冻剂

4、基层施工：

     ①涂料为单组份，第一遍拉毛，需处理干净表面油污、粉尘，拉毛工艺粉料:专用乳液=100:20加水调制稀稠合适，辊涂喷涂匀可，厚度以2-5 mm左右为宜。

     ② 第二遍施工，拉毛干燥后喷涂，在现场大约按粉料:水=1:1（质量比）配比，建议用搅拌机搅拌均匀，喷涂时搅拌好的涂料，通常使用时间控制在 60min之内，用喷涂机从隧道腰部从下而上喷涂，以 5~20mm为宜，亦可多遍喷涂，直至喷涂达设计厚度为止，若要求平整，可用抹涂法进行最后一道施工。20mm 以上厚度建议粘钉挂网，如有特别要求在5mm以上亦可粘钉挂网或贴网。

5、 表面要求装饰施工的：

     在基层干透，即手“抠”不动时，大约3天后，表面可喷涂装饰用的饰面型防火涂料。重点工程，最好刮一次防火涂料找平。可喷涂，亦可刮涂。

6、 养护：施工完毕，常规自然养护30天，养护条件与普通混凝土相近，涂层出现人为损伤，及时修补。

注意事项：

     1、本产品不能同其它涂料、油漆相混。

     2、施工时每次配料不宜过多，用多少配多少。未用完的涂料须密封保存；粉料一经开启，立即使用，以免受潮结块则不能使用。

     3、涂料应在5-35 ℃的环境下保存，严禁冻结，严禁暴晒。

     4、放置时间过长且开始硬化的粉料不宜再用。

包装及储运：

      1、粉料不能雨淋、水浇、曝晒，置放干燥、通风处；

      2、液料防爆晒和雨淋，不宜0℃以下存放，有效期半年，运输按一般物料运输。