The air-dry density of eucalyptus is 0.56-0.86g/cm³, which is relatively easy to break and not tough. Eucalyptus wood has good dry humidity and flexibility.
Compared with poplar wood, the heartwood rate of the whole tree of poplar is 14.6%～34.1%, the moisture content of the raw wood is 86.2%～148.5%, and the shrinkage rate from the drying of the raw wood to 12% is 8.66%～ 11.96%, air-dry density is 0.386g/cm³.The heartwood content is low, the volume shrinkage rate is also low, and the density, strength, and hardness of the wood are obviously low.
The proportion of immature poplar wood is quite high, resulting in poor material quality, low density and surface hardness. The surface of the veneer is fluffed when the veneer is peeled. The wood is soft, low in hardness, low in strength, low in density, and warped. Due to its characteristics such as deformation, the scope of use is limited and the price is low.
Pine wood has high hardness and oiliness, which makes the waterproof performance good and has more turnover. The price of the pine wood templates will be higher.
Therefore, the market for wood templates combined with pine and eucalyptus is very good. It not only preserves the advantages of pine, but also has a high price. There will be advantages to make the surface of this template smooth and easy to peel off, good water resistance, no bowing, no deformation, and many turnover times
Eucalyptus has higher density and greater hardness. The pine-eucalyptus combined template has strong flexibility and high turnover. The 9-layer 1.4-thick guarantee has more than 8 turnovers.
Advantages:
1. Light weight: It is more suitable for high-rise building formwork and bridge construction, and improves the efficiency of formwork.
2. No warping, no deformation, no cracking, good water resistance, high turnover times and long service life.
3.Easy to demold, only 1/7 of the steel mold.
4. The surface of the pouring object is smooth and beautiful, minus the secondary plastering process of the wall, it can be directly veneered and decorated, reducing the construction period by 30%.
5. Corrosion resistance: does not pollute the concrete surface.
6. Good thermal insulation performance, which is conducive to winter construction.
7. It can be used as a high-rise building template with a curved plane.
8. The construction performance is good, and the performance of nailing, sawing and drilling is better than bamboo plywood and small steel plate. It can be processed into high-rise building templates of various shapes according to construction needs.
9. It can be reused more than 10-30 times.