Results of physical testing of TONMAT 3-layer insulation and noise-proof roofing sheets

– Unit requesting testing: Viet Tin Tin Technology Investment and Development Joint Stock Company;
– Content of requirements: Determination of properties of TONMAT thermal and soundproof corrugated iron.

1. GROWTH, AS VIETNAM STANDARD TCVN 178-1986
Density δ = 32.75 kg/m3, belongs to super light materials TCVN 7194–2002

2. Moisture absorption rate, according to VIETNAM STANDARD TCVN 0359–70
Moisture absorption rate of the material W = 0.51%.

3. Absorption ratio, VIETNAM STANDARD TCVN 178-1996
Water absorption rate by volume Hv = 9.19%
Water absorption rate by mass Hm = 406.5 %

4. HEAT TRANSMISSION RATE

Documents: ASTM – C177 (USA), TCVN 7194 – 2002; Ngo Xuan Quang, Pham Duy Huu – Building Materials – Transport Publishing House, 2000; 2- Nguyen Nhu Quy – Insulation Technology – XD Publishing House, 2002.
Heat transfer rate of the material λ = 0.021 (kcal/mhoC)
Temperature difference, continuous measurement for 7 hours, measurement error ± 1oC .
The temperature on the corrugated iron surface: 80oC, under the roofing sheet: 33oC, the difference: 47oC.

5. COMPRESSION STRONG (ISO 604) : 35N/cm2

6. AVERAGE SOUND INSULATION (Institute of Research, Technical and Insurance of Labor, calculation results).
LTK Noise Control in Building Services, OXFORD, 1996.
Panels 20mm thick, frequency range 120–4000 Hz
Sound insulation: 27.3 dB