求翻译：研究发现，当铬革屑掺入量大于0.6%时，由于铬革屑纤维中含有大量的极性基团，吸水性强，初始稠度较大，稠化时间缩短，不利于水泥石强度的发展，综合考虑，铬革屑最大掺入量为0.3%。是什么意思？

The study found that when the chrome shavings mixed with greater than 0.6%, due to the chrome shavings fibers contain a large number of polar groups, absorbent initial consistency, thickening time is not conducive to the cement strength development, considering the incorporation of the chrome shavin

Studies have found that when chrome leather scraps mixed into the amount is greater than 0.6 per cent, the chrome leather scraps fiber contains a lot of polarity-based mission, water absorption, and a large initial consistency, thickening time, to the detriment of the strength of the concrete, stone

The research discovered, when the chromium leather meal mixes in the quantity is bigger than 0.6%, because in the chromium leather meal textile fiber includes the massive polar groups and bases, hygroscopicity, the initial thickness is big, the thick time reduces, does not favor the limestone intens

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