Constraints on the development of ready-mixed mortar industry
Ready-mixed mortar quota, atlas, standards and procedures are basic technical documents, which are the necessary conditions for the design, bidding, supervision and completion acceptance of ready-mixed mortar. Many cities don't have such basic documentation.
Simple method for quality identification of glass bubbles
Perlite ore stays at a high temperature for a long time in the heating process, and then is heated to a high temperature of more than 1200℃. The surface is burned glass, forming a closed cell environment, so it is called closed cell perlite, also called glass glass beads. The proportion of obturator perlite is larger and 80kg/m³ is lower. Generally in 110-150 mesh kg/m³ Above, higher than 150 mesh is not suitable for wall insulation. There are also some businesses opportunism, with not normal expansion of mineral sand raw material to pass as glass bubbles, high strength
Why can the workability of inorganic thermal insulation mortar lose quickly?
Due to the vicious market price competition of glazed microbeads, many construction companies buy the so-called "glazed microbeads" at low prices in order to save the cost of glazed microbeads, which are mostly expanded perlite with open holes. When this opened expanded perlite is mixed with water on the site, it absorbs very much water.
Effect of Concrete interfacial agent on hollow drum Cracking of thermal insulation mortar?
Concrete interface agent to deal with concrete, fly ash brick and aerated concrete, lime-sand brick surface, the solution due to the strong water imbibition or smooth surface interface bonding not easily, can greatly enhance the between old and new concrete and concrete and plaster mortar bond, avoid floated coat empty drum, fall off, the problem such as shrinkage cracking.
External wall insulation material in the field of building insulation shows a strong development trend
Our building thermal insulation materials, especially external wall thermal insulation materials with organic materials as the main body, polystyrene market share is 90%, polyurethane is 10%. In recent years, building heat preservation in the field of strong development, for building energy saving has made a huge contribution.
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