| 摘要 |
<p>Cement compositions contain a retardant and an accelerator. The accelerator contains at least 35 wt% of at least one acid chosen from formic, acetic, oxalic and malonic acid, or their salts : Independent claims are included for: (A) use of the accelerator to reactivate retarded cement compositions; and (B) a method for accelerating hardening of retarded cement compositions using the accelerator.</p> |
