硅酸钙绝热层典型施工方案

Typical construction plan of calcium silicate insulation

1. 硅酸钙管绝热层厚度为80㎜,直管段分为内外二层施工,每层厚度为40mm。弯头为预制成双层的成型件。

 The thickness of the insulation layer is 80mm. For the straight pipe, the insulation is divided into two layers, the inner layer and the outer layer, each with a thickness of 40mm. For the elbow, the insulation is prefabricated forming parts with 2 layers.

2. 硅酸钙瓦块绝热层施工时,同层应错缝,上下层应压缝,其搭接长度不宜小于50㎜. 

When the insulation layer is constructed, the slits of the same layer should be mismatched; the upper and lower layers' ends should be overlapped, and the lap length should be 50mm at least.

3. 水平管道外层纵向保温接缝应避免留在管道顶部。

Longitudinal insulation slits of horizontal pipes should not be at the top of pipes.

4.伸缩缝：直管段每安装15段（9米）需留20mm的伸缩缝，弯头两端均预留20mm伸缩缝，采用压扁的硅酸铝填塞。内外层均需要伸缩缝。

Expansion joint: 20 mm expansion joint should be left for each 15 (9 m) segments of straight pipe section, and at both ends of elbows. The expansion joints should be filled with compressed aluminium silicate. Both inner and outer layers need expansion joints.

5. 每层硅酸钙保温制品每段至少应有两道镀锌铁线环形捆扎，铁丝距保温材料端头大于100㎜，拧紧后的铁丝扎头要嵌入保温层纵缝内。

There should be at least two strands of galvanized wires in each section of the insulation layer. The distance between the wire and the end of the insulation layer should be 100mm at least. The tightened wire lash head should be embedded in the longitudinal slit of the insulation layer.