粉末过污泥的特征和实验研究,以便在建筑工业中潜在使用
Tarique Ahmad1, Hassan M Magbool2, Sayed Shujahuddin Rasooly3
1Civil and Architectural Engineering Department, College of Engineering and Computer Science, Jazan University, Jazan, Saudi Arabia. tariqueahmadamu@gmail.com.
Scientific reports
|September 10, 2025
概括
来自水处理厂的过污泥可以粉末化,并作为建筑中的普通波特兰水泥 (OPC) 的部分替代品. 含有高达15%粉末过污泥的砂具有良好的压力强度,符合建筑标准.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 水处理厂在反冲洗过程中产生大量的过污泥.
- 处理这些污泥会给环境带来挑战,并带来成本.
- 可持续利用废物对建筑行业至关重要.
研究的目的:
- 调查使用粉末过污泥 (PFS) 作为普通波特兰水泥 (OPC) 砂中部分水泥替代物的可行性.
- 描述与PFS混合的砂的特性,并评估其适用于建筑应用的适用性.
- 评估使用PFS作为可持续建筑材料对环境的好处.
主要方法:
- 过污泥被收集,干燥,粉碎和选,以获得粉状过污泥 (PFS).
- 用于砂制备,PFS与OPC在不同比例 (高达20%) 中混合.
- 评估了开发的砂的压力强度 (28日和90天) 和定时间.
- 房产与控制砂 (仅OPC) 和建筑标准进行了比较.
主要成果:
- 用高达15%的PFS混合的砂在28天后的压力强度超过33MPa,在90天后的压力强度超过41MPa.
- PFS混合砂的设置时间保持在可接受的建筑界限内.
- 与高达15%的PFS混合的OPC满足了各种建筑规格,特别是对于不需要早期强度开发的应用.
结论:
- 粉末过污泥 (PFS) 可以有效地作为普通波特兰水泥 (OPC) 砂中的部分水泥替代品.
- 这种利用为水处理污泥提供了可持续的处置途径,并减少了水泥消耗.
- 在建筑中使用PFS有助于节约自然资源和减轻与水泥生产相关的碳排放.
更多相关视频
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.8K
15:19Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
10.1K
相关概念视频
00:53Filtration
4.9K
Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
4.9K
01:14Design Example: Managing Concrete Workability
302
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
302
01:20Slump Test
811
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...
811