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Commonly used cement and admixtures for drilling
In drilling construction, cement is needed to reinforce the orifice pipe and water stop casing, and also often encounter complex problems such as collapse, leakage, and broken off blocks of the formation, which require cement for wall protection and plugging. However, due to the low early strength of ordinary cement, setting time is too long, the slurry liquidity is poor, it is necessary to use cement additives to improve and adjust a variety of cement properties, the use of cement additives to improve and adjust the performance of certain cements is an effective way. For example, to improve the early strength is appropriate to use early strength admixture; to shorten the setting time, then use rapid setting agent; if you need to improve the fluidity, to use drag reducing agent and so on.
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The influence of concrete admixture amount and mixing process
The optimal amount of concrete admixture admixture should be determined by the recommended amount, use requirements, construction conditions, raw materials and other factors through testing. Use requirements refer to the requirements of the project, such as early strength or slow setting, saving cement or improving performance, etc.
For the use of cement additives to be reasonable
Cement additive is an important guarantee for cement manufacturers to produce cement because it helps grinding, improves production efficiency, enhances cement performance and reduces production cost. The main principle is to increase the output of the mill, make the raw materials fully ground, enhance the strength of the finished cement, increase the amount of mixed materials, and reduce the cost of cement production through the effectiveness of the additives themselves. Cement additives certainly have their good effects, but companies can not blindly use, according to their own actual situation (such as cement ingredients, mill models, etc.) for cement additives to make appropriate adjustments in order to make the best performance of cement additives.
Development trend of cement additives
With the continuous development of society, the process technology is also improving, and the requirements of the cement industry are getting higher and higher. Cement additives have the advantages of saving energy, reducing costs, and improving the quality of cement products and their corona, and have been commonly used at home and abroad.