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一般机制砂含水率为多少
机制砂最全知识点23问
1）生产出来的机制砂水分含量低，一般低于2%，商混和干混砂浆可以直接使用； 2）成品砂中石粉含量可调可控，集中回收能够综合利用，减少粉尘排放； 3）生产过程中极少或不 答：机制砂内部毛细孔隙含水达到饱和而其表面干燥；一般就含水率而言，不会超过6%。 42 在机制砂检测中，需要用到的常见检测仪器有哪些？干货收藏】机制砂最全100疑问解答颗粒 搜狐
学术：机制砂饱和面干吸水率试验方法探讨——科技
文章采用的机制砂为石灰岩破碎而成，机制砂细度模数为37，干筛分试验结果见表1。通过调整不同的石粉含量配制机制砂样品，测试其饱和面干吸水率。 表1试 如干法制砂则需在成品出机时增加喷水装置，使机制砂具有稳定的含水率，含水率在3%~5%为宜，既能降尘保护环境，还能防止机制砂离析，也保证机制砂含水率均匀。 水洗法制砂则需要注意石粉含量的控制，且水洗后 机制砂级配不良、石粉及含水率的控制
机制砂含水率计算公式 百度文库
机制砂含水率的计算公式如下： 含水率（%）=（干重湿重）/湿重×100% 其中，干重是指机制砂在干燥状态下的重量，湿重是指机制砂在含水状态下的重量。答：主要原因是：1)消耗大量水，1t砂石料需耗水2~35m³；2)产品砂水含量高，须脱水，干混用须重新烘干；3)产品砂细度模数偏粗，砂子产量低；4)产生大量的泥粉污水，污染环境，且石粉不易回收；5)基建投资及设备种 砂石人必看！机制砂专业知识答对90%以上的都是行家
关于机制砂、中砂、海砂、砂率
砂作为骨料，起到很重要的作用，砂率的大小对混凝土的和易影响很大，在泵送混凝土中，砂率一般为38%到41% 关于机制砂、中砂、海砂、砂率 合适的含砂率应是石子、砂、水泥浆互相填充，使混凝土既能达到较大 一般来讲，同坍落度的前提下，机制砂的 用水量 要稍大些，但要根据施工条件及结构物和运输等因素考虑。 但对混凝土的强度基本不变；用机制砂配制 泵送混凝土 等 特种混凝土 机制砂百度百科
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