What is the moisture within timber that is contained within cell cavities and intercellular spaces called?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Study for the Diploma Programme Design Technology Exam. Engage with flashcards and multiple-choice questions, each offering hints and detailed explanations. Be well-prepared for your test!

Multiple Choice

What is the moisture within timber that is contained within cell cavities and intercellular spaces called?

Explanation:
Moisture in timber is classified by where it sits and how it’s held. The water that fills the cell cavities and intercellular spaces is free moisture because it lives in the pores and lumens and isn’t chemically bound to the wood. This is the portion that moves with changes in moisture and temperature and is the first to be removed during drying, causing weight and size to drop as it leaves. After the lumens are emptied, what remains is bound moisture, which is water bound to the cell walls. Hygroscopic moisture relates to how wood equilibrates with ambient humidity (more about the environment’s effect on water binding), while saturated moisture refers to pores being completely filled with water. So the water in the cavities and spaces is free moisture.

Moisture in timber is classified by where it sits and how it’s held. The water that fills the cell cavities and intercellular spaces is free moisture because it lives in the pores and lumens and isn’t chemically bound to the wood. This is the portion that moves with changes in moisture and temperature and is the first to be removed during drying, causing weight and size to drop as it leaves. After the lumens are emptied, what remains is bound moisture, which is water bound to the cell walls. Hygroscopic moisture relates to how wood equilibrates with ambient humidity (more about the environment’s effect on water binding), while saturated moisture refers to pores being completely filled with water. So the water in the cavities and spaces is free moisture.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy