Performance, uses and varieties of pumping agents
1. The characteristics of the pumping agent are to improve the pumpability of concrete, that is, the concrete mixture must be able to pass through the delivery pipeline smoothly without clogging, segregation, and good visco-plasticity. Therefore, the performance requirements of the pumping agent have four characteristics: first, the slump after adding the pumping agent is…
Performance, uses and main varieties of accelerating setting agents
1. There are two types of quick-setting agents: powder and liquid. The moisture content of powdery quick-setting agent cannot be greater than 2%, and the fineness should be finer than cement, that is, the 0.08mm sieve residue should be less than 15%. Cement mortar mixed with quick-setting agent should initially set within 3-5 minutes and…
Performance, uses and main varieties of early strength water reducing agent
The water reduction rate, air content and other indicators of early-strength water-reducing admixture are the same as those of ordinary water-reducing admixtures. The delayed condensation indicator of the setting time difference is only 90 minutes, which is different from the 120 minutes of ordinary water-reducing agents. In addition, the 1d relative compressive strength reaches 130-140%…
