How does vermiculite make a roof insulation?
The thickness of the insulating layer is usually 1.3 times the design thickness (not including the leveling layer). After the laying, it is leveled with a wooden board (wooden crab) and leveled to the design thickness. The bedding plane of the expanded vermiculite particles should be parallel with the laying plane as possible as possible.
As the swelling of vermiculite water absorption is faster, it is better to transport raw materials to the laying site during construction, with mixing and paving to ensure the accuracy of the water cement ratio and the quality of the project.
1, the use of mechanical agitation, the expansion of vermiculite particles are very damaged, and sometimes can reach 50%, and easily with the mixing tube bonding, it is not appropriate to use. Using artificial mixing, the first water and cement quantitative uniform into cement slurry, cement slurry and then evenly pour in vermiculite quantitative with bucket, pour with mix, mixing evenly.2, roofing laying insulation layer, should take "sub warehouse" construction, each warehouse width of 700 ~ 900mm. It can be separated by wood board, or steel bar ruler can be used to control width and laying thickness.
The cast-in-place cement vermiculite thermal insulation layer is made of expanded vermiculite as aggregate, cement as cementing material, mixing in a certain proportion and mixing with water and sand. Has the characteristics of light weight, small thermal conductivity, high strength, easy expansion of fission, delamination, economic quantity etc.. When applied to the flat surface, it can reduce the load of the surface layer, save the water consumption, reduce the cost and shorten the construction period. The utility model can be used as a heat insulating layer for cast-in-place or heat insulation layer or the like.
