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Precautions in the construction of lightweight castables

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-10-15     


1. Formwork: The template for construction of lightweight castable can be made of steel plate or hardwood plate (five plywood). The formwork should have sufficient strength, good rigidity, no shape, no displacement, no leakage, and the formwork should be coated. For the agent, the wooden formwork should be coated with a waterproofing agent. The used template should be cleaned before painting. Check holes and cleaning holes should be made of wood with regular formwork. The metal ribs supporting the wood magic board should be more than 4 per square meter (to prevent strong heat transfer) and the lacing should be welded on the basis of the anchor (that is, the lacing of the template should be welded to the anchor).

2, water-cement ratio: the amount of water added when mixing lightweight castables should be strictly controlled according to the instructions, not exceeding the limit, under the premise of ensuring the construction performance, the amount of water should be less and less.

3. Stirring: The mixing time of the lightweight castable should be no less than 5 minutes (subject to the requirements of the manual), and a forced mixer should be used during operation. When stirring, dry mixing should be carried out first, then 80% water is added to stir, and then depending on the dryness and humidity, the remaining water is slowly added to continue stirring until a suitable working degree is obtained. Mix the lightweight castable to clean the mixer.



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