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the benchmark cement

 
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qizhen0809



Joined: 24 Jul 2017
Posts: 1310

PostPosted: Fri Jan 12, 2018 11:56:32 am    Post subject: the benchmark cement Reply with quote

<p>Adaptability of cement and admixtures to concrete Influence of Adaptability of Cement and Additives on Concrete According to Gongyi micro-silica fume introduction, the performance of concrete depends not only on balcony decking options the performance of the various components of the material, but also depends on the adaptability of materials and their mix. Admixture as a component of concrete, the proportion of small, but the performance of the cement is greatly affected, can significantly improve the slump of concrete, adjusting the setting time, thereby improving the construction performance of concrete or cost savings. The adaptability of cement with admixtures is not good.</p> <p> In practical engineering, the main features are as follows: First, the initial fluidity of concrete admixtures is very poor, which purchase commercial composite landscape timbers obviously can not meet the design requirements. The water reduction rate is lower than that of the benchmark cement ; Second, the initial fluidity of concrete is better, but the loss over time; Third, the prepared high-mobility concrete separation significantly bleeding, and even the phenomenon of "grilled bottom"; Fourth, there is abnormal condensation phenomenon If there is acute coagulation, false coagulation occurs. </p> <p>The main reasons are as follows: The factors of admixture itself, the different types of admixtures, the different functional groups, the different degree of polymerization, and the different components will affect the adaptability with cement; C3A hydration reaction is fast, Large water demand, the amount of Hot Selling sammensatt produkt - Seven Trust
adsorbed additional large loss of admixture, so the high content of C3A cement additives generally poor adaptability.</p>
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