一个新的指数来衡量重塑的统一性
Haike Wang1,2, Ken Howard3, Jianbing Peng4
1School of Water and Environment, Chang'an University, Xi'an, 710054, Shaanxi, China.
Scientific reports
|March 26, 2024
概括
液压导电性 (K) 有效地表明重塑的均性,这对于地质工程的稳定性至关重要. 这项研究证实了K.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 材料科学 是一种材料科学.
背景情况:
- 重塑的均性对于工程稳定性和实验室测试准确性至关重要.
- 现有的评估统一性的方法可能缺乏方便性或准确性.
- 需要一个可靠的指数来评估重塑的均性.
研究的目的:
- 为了证明和验证使用液压导电性 (K) 作为重新成型片均性的指标的可行性.
- 建立一个方便和准确的方法来评估在地质技术应用中重塑的均性.
主要方法:
- 在不同的条件和干燥密度 (1.3,1.4,1.5 g/cm3) 下,实验室准备了9个重塑的样.
- 通过切割和称重土壤柱进行统一性分析.
- 使用达西定律和科泽尼-卡曼方程进行液压导电性 (K) 实验和理论分析.
主要成果:
- 样品准备条件显著影响重塑的丝均性.
- 液压导电性 (K) 值与样品均度的程度呈正相关性.
- 理论分析证实K与样本干密度的变异成反比例.
结论:
- 液压导电性 (K) 是一个可靠且易于测量的指标,用于评估重塑的均性.
- 这些发现为地质工程实践提供了一个方便而简单的新索引.
- 精确评估重塑的均性可以提高工程稳定性和测试可靠性.
相关概念视频
Fineness Modulus
397
The fineness modulus (FM) of aggregate is a numerical index that measures the coarseness or fineness of the particles. It is calculated by adding the cumulative percentages of aggregate retained on each of a specified series of sieves and dividing the sum by 100.
Consider performing sieve analysis on sand through a set of ASTM sieves. The weight of aggregate retained in each sieve and pan placed at the bottom is recorded, as given in Column B of Table 1.
To determine the fineness modulus of...
Consider performing sieve analysis on sand through a set of ASTM sieves. The weight of aggregate retained in each sieve and pan placed at the bottom is recorded, as given in Column B of Table 1.
To determine the fineness modulus of...
397
Slump Test
215
The slump test is a widely used method to measure the workability of concrete. It employs a 12-inch high truncated cone mold that tapers from eight inches at the base to four inches at the top. Before testing, the mold is securely attached to a flat base and dampened.
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
215
Moisture Content and Bulking of Aggregate
139
The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
139


