Abstract
This paper describes how fiber-reinforced cement board (FRCB) is increasing in consumer popularity because it is more durable than conventional wood products. However, there are concerns about the freeze-thaw durability of the material because of it laminated structure and high porosity. To overcome these weaknesses, some manufacturers have begun to press the material after is formed. The objective of this paper is to evaluate the effects of this new processing on the durability of the FRCB. Three commercially-available FRCB products - two that had been pressed and one that had not - were subjected to accelerated freeze-thaw cycling according to a modified version of ASTM Standard C1185. The flexural strength, interlaminar bond (ILB) strength and porosity were measured. The results indicate that pressure might improve the ILB and flexural strength of the FRCB after freeze-thaw testing. However, porosity is not affected by pressure after freeze-thaw.
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