Precautions for the uses of polycarboxylate cement in winter and summer
In recent years, polycarboxylate superplasticizers have been widely used in construction projects and have become an indispensable and important part of construction projects. However, polycarboxylates use high-performance superplasticizers, and there are still many things that need everyone when using them. Note, especially in winter and summer, the editor will briefly analyze the precautions for the use of polycarboxylate superplasticizers in winter and summer, hoping to help you.
1. In summer, the temperature is too high, in order to slow down the setting time of concrete, it is necessary to add retarder, which can avoid the loss of concrete to a certain extent.
2, in winter, it is necessary touses of polycarboxylate cement, according to the need to use early strength agent, the antifreeze can accelerate time to dismantle, the concrete setting time is slightly ahead of time, if the temperature falls below zero, can add antifreeze, prevent concrete freezing all want to add and subtract water, because water reducing agent can reduce the dosage of the concrete, cement dosage, cost savings.
In the absence of admixtures, concrete has been a very important building material, then the concrete usage is very big, will be virtually increase the construction cost, but with the emergence of various functional additive, energy saving effect of additive was developed, through its own has the effect of impact on the performance of concrete, so as to change the amount of concrete, Realize the effect of energy saving. Through the scientific and reasonable use of admixtures with different effects, can change some inherent properties of concrete on the basis of effective reduction of concrete usage, the formation of energy-saving economic targets, such as various types of water-reducing admixtures.
| Appearance | / | white or light yellow powder |
| density | kg/m³ | 500±50 |
| PH | / | 5-7 |
| soild content | % | 97±1.0 |
| moisture content | % | ≤3.0 |
| water reducing | % | ≥25 |
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