Macro-micro degradation process of fly ash concrete under …
2018年8月30日 · In this study, CT scanning was utilized to reveal the internal structural changes (such as pores and cracks) of fly ash concrete after several alternations of freeze–thaw cycles subjected to sulfate and carbonation.
分类问题的评价指标：多分类【Precision、 micro-P、macro-P】、【Recall、micro-R、macro …
2022年2月20日 · 总的来说，微观F1 (micro-F1)和宏观F1 (macro-F1)都是F1合并后的结果，这两个F1都是用在多分类任务中的评价指标，是两种不一样的求F1均值的方式；micro-F1和macro-F1的计算方法有差异，得出来的结果也略有差异； Micro-F1 不需要区分类别，直接使用总体样本的准召计算f1 score。 该样本的混淆矩阵如下：
Macro–micro investigation on stabilization sludge as subgrade …
2024年4月1日 · This study investigates the efficacious utilization of sludge as a subgrade filler through in-situ shallow stabilization, employing cementitious industrial waste materials including steel slag (SS), fly ash (FA), and calcium carbide residue (CCR) as binding agents.
Macro-micro characteristics of geopolymer-stabilized saline soil …
2023年12月1日 · Through unconfined compression strength (UCS) test, x-ray diffraction (XRD) test, scanning electron microscope (SEM) tests and mercury intrusion porosimetry (MIP), this research investigates the macroscopic strength characteristics, microscopic mineral composition, and pore structure variation of quicklime, fly ash and sodium silicate joint ...
Macro-micro degradation process of fly ash concrete under …
In this article, two types of experiments were implemented: freeze–thaw cycles subjected to sulfate (SF), and the alteration of freeze–thaw cycles subjected to sulfate and carbonation (SFC).
Macro-micro degradation process of fly ash concrete under …
2018年8月1日 · To study the durability of concrete with fly ash as fine aggregate subjected to alternative attacks of freeze-thaw and carbonation, the appearance, mass loss, relative dynamic modulus of elasticity, …
Micro flyeye - www.photomacrography.net
2020年4月20日 · Micro-fisheye objective, inside a prepared fly eye shell. Field of view about 160 degrees; point of view, about 1,2 mm from focus. The hexagons are about 30 micron diameter. The hand is 1/2 foot long. Subject: human hand ... ok, …
Micro Fly Assortment for Fly Fishing | The Catch and The Hatch
With our Micro Fly Assortment for fly fishing you're sure to catch more fish in no time. Our assortment includes 72 premium micro flies...
Micro-CT to see the whole fly | Lab Animal - Nature
2020年2月10日 · After considering several whole-organism options, Schoborg and his colleagues settled on micro-computed X-ray tomography (micro-CT), a commercially available technology that can be found at...
In-depth analysis of macro-properties and micro-mechanism of …
2024年10月15日 · In this study, low-Ca CFBFA (LCFA) and high-Ca CFBFA (HCFA) were used as precursors, with NaOH as the activator. The workability, mechanical properties, and microstructure evolution of the geopolymer samples were systematically compared. The LCFA-based geopolymer slurry exhibited ideal workability.