Effect of the Additive Amount of Perlite By-Products on Compressive Characteristics and Durability of Fiber-Cement-Stabilized Soil

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<p>A new recycling method for high water content sludge called the “Fiber-cement-stabilized soil method” was developed in Japan by using paper debris and cement. However, recently, the cost of paper debris is increasing which leads the recycling cost to be also increased. Therefore, a new material with a low cost to replace paper debris is desired. By the way, perlite by-products are industrial wastes discharged from the production of perlite and are currently being disposed in the final disposal site with a high cost. On the other hand, their porous bodies have a high ability for absorbing water. Therefore, if they can improve the high-water sludge as a water-absorbing material, the reduction of the additive amounts of paper debris and the recycling cost will be possible. In this study, unconfined compression test and the cyclic test for drying and wetting are carried out to obtain the compressive properties and durability of Fiber-cement-stabilized soil with perlite by-products. The experimental results show that the failure strength increases with the increase of the additive amounts of perlite by-product. It was indicated that perlite by-products work as a replacement for paper debris and additive amounts of paper can be reduced. </p>

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