| 摘要 |
<p>Fine cement-binder mixt. contains finely ground clinker or finely ground foundry sand, and additives, e.g. bentonite, brass, high dispersed silicic acid or other known additives, and agents, e.g. fluxing agent, hardening retarder, hardening accelerator, water held-back agent and other known agents. The entirety of the homogeneous dry mixt. has a grain size distribution of d95≤24 mu m and d50 < 7 mu m. Prodn. of the mixt. is also claimed. Appts. for carrying out the above process is also claimed.</p> |
