Wood preservation method of building materials
Wood preservation by way smear and spraying
The simplest preservation method and produce preservation unfavorable because van preservatives which enter and dwell in wood preservatives only slightly and the van easily fade. The advantage hádala: tools that are simple, easy to use and inexpensive. It is recommended only used temporarily, not wood destroying malignant attack and for the preservation of wood that have been installed. Examples give a coat of paint on wood, whitewash wood with tar, etc.Wood preservation by Immersion MethodImmersed in a tub timber preservative solution has a concentration determined for several days. Wood must be submerged all.There are three ways to preserve the marinade, namely: cold baths, hot baths and hot-cold baths.Preservative used in the form of salt.The advantage: van preservative penetration and retention of more wood in large quantities can be cured together, the solution can be used repeatedly.The keruguian preservation of wood by means of immersion is: a long time especially cold baths, equipment susceptible to corrosion, the process of soaking the wood can be burned hot and wet wood is difficult preserved in this way.Wood preservation by way Pressure and vacuum (modern way)The advantage: a preservative penetration and retention of high, time is short and can be wet or dry wood preserving.The disadvantages are: costly, need high accuracy and is used only for commercial companies.According to the way it works, the process is divided into: full-cell process, where the process is preservative fills the entire cell lumen kayu. full cell method there are 2 ways bethel method and Bernett. Empty cell process, namely preservatives only fill the space between the wood cells. There are two ways Rueping way, using the initial pressure of 4 atmosphere was raised to 8 atm. The second way is how Lawry using initial pressure 7 atm.
Sequence of how the process empty cells: Wood put into a sealed tank. Direct pressurized into the tank atmosphere   ± 4 ± 10 â € "20 minutes. Preservatives put into the tank to the brim. Improved to 7-8 atmosphere pressure for 2 hours. Pressure is stopped, preservatives issued last vacuum Forum  ± 60 cm / Hg  ± 10 minutes to clean the surface of the wood preservative.
that's roughly how the preservation of wood as a building material, if there are other tricks and tips can be entered below. :-).
0 komentar:
Posting Komentar