Effect of Water Absorption on Flexural Strength and Modulus

EFFECT OF WATER ABSORPTION ON FLEXURAL STRENGTH AND MODULUS 

In another set of similar experiments, conducted 3 years later, for support span of 24 , ultimate load was 705 + 19 lb, flexural strength was 2491 + 64 psi, and flexural modulus was 323,000 6000 psi. After the board was saturated with water, ultimate load was 714 45 lb, flexural strength was 2542 + 158 psi, and flexural modulus was 

000 17,000 psi. This means, water saturation of GeoDeck practically did not affect its flexural strength and modulus. 

In yet another example for a different commercial solid WPC board, the ultimate load at ambient conditions was 1521 28 lb (moisture content 0.34 0.04%) at support span of 16 , flexural strength was 3,692 + 55 psi, and flexural modulus was 

000 + 17,000 psi. After the board was saturated with water, the ultimate load was 1616 + 26 lb, flexural strength was 3789 81 psi, and flexural modulus was 448,000 + 15,000 psi. This means, its flexural strength and modulus for water-saturated board again slightly increased, by 2.6 and 4.2%, respectively. 

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