Freeze-Thaw Durability of Commercial Fiber-Reinforced Cement Board


  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Freeze-Thaw Durability of Commercial Fiber-Reinforced Cement Board

Author(s): Katherine G. Kuder and Professor Surendra P. Shah

Publication: Special Publication

Volume: 224


Appears on pages(s): 145-160

Keywords: fiber-reinforced cement board, Hatschek process, freeze-thaw durability, interlaminar bond strength, porosity, pressure

Date: 12/1/2004

Fiber-reinforced cement board (FRCB) is increasing in consumer popularity because it is more durable than conventional wood products. However, concerns exist about the freeze-thaw durability of the material due to its laminated structure and high porosity. To overcome these weaknesses, some manufacturers have begun to press the material after it is formed. The objective of this work 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.