| 摘要 |
A reinforcement spacer (80) has a body of polymer concrete, the polymer concrete consisting of a cured plastic material (108), into which aggregates are incorporated in the form of grains (110, 110''). The surface (112) is post-treated in such a manner that grains (110, 110') project from the surface (102) of the cured plastic material (108), permitting an intimate chemical and physical bond with the cement paste of a concrete composition into which the spacer is to be embedded. <IMAGE> |
