In order to prevent and protect the loss of waterways such as coasts, rivers, or rivers, the present invention simply uses a board-type ecological block using volcanic stones on its surface without removing a raft block made of concrete retaining wall, stonework or block. The construction relates to ecological blocks using volcanic stones that can be used to create environmentally friendly natural environments and to promote water purification.;The ecological block of the present invention is a support board that is arranged to be fixed to be arranged in close contact with each other on the inclined surface or existing concrete retaining wall of the revetment block; and a volcanic stone member formed to be attached to the upper surface of the support board; And an adhesive means for attaching the volcanic stone member to the support board. At this time, the above-mentioned support board is a fiber-reinforced cement board composed of cement, cellulose fibers and microfiber, and the adhesive means is an adhesive prepared by mixing a curing agent of polyamide with epoxy resin in a ratio of 10: 3, respectively.
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