| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain cement extender good in initial strength and also good in long term strength. SOLUTION: The cement extender is contains 10-100 pts.wt. in total of C3 A and C4 AF to 100 pts.wt. C2 S, and the cement contains 5-100 pts.wt. cement extender for 100 pts.wt. Portland cement clinker.</p> |
