Abstract

This paper presents the shear strength behavior of glass beads with two particular sizes under the influence of 0–5% liquid and hydrated lime (HL) contents. Experimental work was performed to analyze the influence of liquid–powder mixture ratios on a wet granular system under various loading stresses. Results showed that shear resistance (i.e., cohesion and friction) initially increased then decreased with the increase in liquid amount. HL increased the shear resistance of the mixture with a low liquid content (up to 3%), whereas it showed ineffective behavior in the mixture with a high liquid content (from 4% to 5%) because of the dominant liquid-related forces in the intermediated adhering layer. HL addition to the mixture increased the cohesion constants of small (from 0.04 kPa to 1.41 kPa) and large (from 0.2 kPa to 1.78 kPa) glass beads. Bulk density initially decreased with an increase in liquid content to a certain extent and increased afterward. HL was effectual (from 1% to 4%) and decreased the bulk density, but further addition of HL exerted an indeterminate effect. Hence, the bulk density and shear resistance evaluation help to assess the growth and strength of agglomerated products.

摘要

本文介绍了在 0-5% 液体和熟石灰 (HL) 含量的影响下，具有两种特定尺寸的玻璃珠的剪切强度行为。进行了实验工作以分析在各种负载应力下液-粉混合比对湿颗粒系统的影响。结果表明，随着液量的增加，剪切阻力（即内聚力和摩擦力）先增大后减小。HL 增加了低液体含量（高达 3%）的混合物的剪切阻力，而在高液体含量（从 4% 到 5%）的混合物中表现出无效行为，因为在中间粘合层。添加到混合物中的 HL 增加了小（从 0.04 kPa 到 1.41 kPa）和大（从 0.2 kPa 到 1.78 kPa）玻璃珠的内聚常数。体积密度最初随着液体含量的增加而降低到一定程度，然后增加。HL 是有效的（从 1% 到 4%）并降低了堆积密度，但进一步添加 HL 会产生不确定的效果。因此，堆积密度和抗剪切性评估有助于评估团聚产品的生长和强度。