Some recent publications suggest that loose sand with a small amount of fines manifests the so-called "reverse behaviour". Whilst such unusual behaviour was interpreted in terms of the micro-structural arrangement of fines in the sand matrix, reverse behaviour does not appear to be compatible with the critical state framework. On these premises, this paper presents experimental results that indicate the effect of a small amount of fines is to change considerably the shape and the relative position between the critical state and normal consolidation lines. Additionally, a modified state parameter is defined so that the undrained behaviour of sand with a small amount of fines can be predicted within the critical state framework.
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机译：用于啤酒的二次过滤的过滤材料及其生产方法技术领域本发明涉及一种用于包含硅藻土的啤酒的二次过滤的过滤材料及其制备方法，其中在与过滤的啤酒的流动相反的方向上，所述过滤材料为由第一层粗过滤硅藻土制成，其厚度大于2毫米，过滤面积的范围为0.66至1.05 kg / me2，第二层由混合物制成，厚度大于2毫米过滤面积为0.55至1.20 kg / me2的细过滤硅藻土和过滤面积为0.10至0.20 kg / me2的吸附材料，第三过滤层具有粗滤硅藻土和细滤硅藻土的重量比为10:90至30:70的混合物产生的厚度大于1.5mm。
