TITLE OF EXPERIMENT: EXPERIMENT 3-TREATABILITY OF TIMBER IN DISTILLED WATER AT 100°C FOR 60 MINUTES.
NAME: 1) Muhammad Affendi bin Abdullah 2) Hairul Hizzuan Bin Mohd Anuar 3) Mohamad Shahrul Ramadhan Bin Asbullah 4)
LECTURERS NAME: PUAN JUDITH GISIP
INTRODUCTION:
The evaluation of treatability is based on the rate absorption of preservative. This experimental has an important role to play particularly for the impregnation of timbers in the vacuum pressure process or the double vacuum process. Depend on particular wood, the treatment parameters are selected to ensure the wood receives optimum protection from the process. The standard preservative treatment is in grouping of seven, which is important to treat timber in order to know the absorption range of each. The treatability grouping of Standard Preservative Treatment is available in the table below:
GROUPING
ABSORPTION RANGE
Extremely easy
Greater than 320 kg/m3
Very easy
190-320 kg/m3
Easy
130-190 kg/m3
Average
95-130 kg/m3
Moderately difficult
65-95 kg/m3
Difficult
30-65 kg/m3
Very difficult
Less than 30 kg/m3
OBJECTIVES:
To understand the principle of the above evaluation of timber treatability at a laboratory scale.
To find out how treatability is affected by distilled water at temperature 100°C for 60 minutes.
LITERATURE REVIEW:
Kapur, or Dryobalanops spp. The timber is a medium hardwood in the range density of 580-820 kg/m3.
Kapur have a very high percentage of shrinkage.
The shrinkage of some species are summarised below:
(source: woodwizard.my)
Meranti, or Shorea spp. This timber is a light hardwood with a range of density between 595-755 kg/m3.
Different with Kapur, Meranti have an average percentage of shrinkage.