| 摘要 |
<p>The invention provides polymer concrete compositions comprising: (1) from 3% to 15% by weight of an unsaturated polyester or vinyl ester composition which contains a freeradical initiator, and (2) from 85% to 97% by weight of an aggregate composition containing 5% to 50% by weight of fly ash based on the aggregate composition, at least part of the balance being sand; and the use of such compositions in preparing cured moulded articles. Such articles may be for example blocks or pipes formed from the composition alone or they may be for example metal pipes internally and/or externally coated with the composition.</p> |
