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Updated: Jun 14, 2025

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对废弃的造砂的生态毒理学评估以及不同分类系统的应用

Carlotta Alias1,2, Flavio Cioli3, Alessandro Abbà1,3

  • 1B+LabNet-Environmental Sustainability Laboratory, University of Brescia, Brescia, Italy.

Integrated environmental assessment and management
|August 30, 2024
PubMed
概括

整合工业废弃物液生物试验的生态毒理学数据至关重要. 这项研究发现,三种整合方法产生了类似的结果,根据毒性对样本进行分类,并表明未稀释的液对查有效.

关键词:
艾利维布里奥·菲舍里 (Aliivibrio fischeri) 是一个鱼类生物.生物测试是一种生物测试.达夫尼亚大 (Daphnia magna) 是一个大的植物.生态毒性 生态毒性伪虫菌子群的分类.

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Deleterious Substances in Aggregate01:25

Deleterious Substances in Aggregate

Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...
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Aggregates Classification01:29

Aggregates Classification

Aggregate classification is generally based on its size, petrographic characteristics, weight, and source. Size classification ranges from coarse to fine aggregates, defined by the size of the particles. Coarse aggregates are particles that do not pass through ASTM sieve No. 4, and aggregates that pass through the sieve are fine aggregates.
Petrographic classification groups aggregates based on common mineralogical characteristics. Some of the common mineral groups found in aggregates are...
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Design Example: Aggregate Gradation

The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
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Testing Water Quality01:14

Testing Water Quality

When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
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