相关实验视频

Updated: Jul 5, 2025

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

关于泥和地质聚合物复合材料的审查,其中包含渣

Hongxiang Gou¹, Madhuwanthi Rupasinghe¹, Massoud Sofi¹

¹Department of Infrastructure Engineering, The University of Melbourne, Parkville 3053, Australia.

Materials (Basel, Switzerland)

|January 11, 2024

概括

渣 (LS) 在混凝土和地聚合物复合材料中显示出作为可持续补充水泥材料 (SCM) 的承诺. 它的性能提高了机械强度和耐用性,为传统材料提供了具有成本效益的替代品.

科学领域:

材料科学材料科学材料科学
土木工程土木工程是指土木工程.
可持续材料可持续材料

背景情况:

渣 (LS) 是一种工业副产品,在建筑行业具有潜在的应用.
补充性水泥材料 (SCM) 对于提高混凝土性能和可持续性至关重要.
了解LS的特性是其在水泥和地聚合物复合材料中有效利用的关键.

研究的目的:

批判性地审查渣 (LS) 作为补充的固材料 (SCM).
检查LS在混凝土和地质聚合物复合材料中的生理化学特性,机械性能和耐久性.
评估LS作为可持续建筑材料的经济和环境可行性.

主要方法:

关于渣在水泥和地质聚合物应用中的现有研究的文献综述.
对LS的粒子大小分布,化学组成和反应性的分析.
评估机械性能 (例如,强度,定时间) 和耐久性方面 (例如,化物抵抗,收缩).

主要成果:

LS的颗粒大小与飞灰 (FA) 和磨砂颗粒高炉渣 (GGBS) 相似,增强了混凝土的密度.
机械处理增加了LS的溶解度,促进了早期的水合,并改善了机械性能,达到30%的含量值.
LS增强了离子的抗性,并起到充填剂,聚剂和核化剂的作用,减少孔隙性和增加耐用性.

结论:

渣是一种具有成本效益和可持续性的SCM,有可能取代FA等传统材料.
需要对LS研磨,拉伸性质,环境性能和波佐兰反应性进行进一步的研究,以获得最佳的应用.
它有助于废物利用和开发绿色混凝土技术.

关键词:

他们的碳足迹.在水泥,水泥,水泥.这是一个复合材料.混凝土混凝土混凝土是什么耐久性耐久性耐久性补充水分补充水分补充水分的废渣是的废渣.审查审查审查审查审查审查强度强度强度强度强度强度强度强度强度强度强度强度强

更多相关视频

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

Published on: June 27, 2018

相关概念视频

Types of Cement II

Types of Cement II

Portland blast-furnace cement is made by blending Portland cement clinker with granulated blast-furnace slag, which accounts for 25 to 65 percent of the cement's weight. Despite its similarities to ordinary Portland (Type I) cement in terms of fineness and setting times, its early strength is lower, though it achieves comparable strength later on. It's particularly suited for mass concrete structures and marine environments due to its lower heat of hydration and superior sulfate...

Pozzolans

Pozzolans

Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...

Portland Cement

Portland Cement

Portland cement is the essential binding ingredient in concrete, made from finely ground materials including lime, iron, silica, and alumina. Lime is derived primarily from limestone, marble, marl, seashells, and clays, which also supply iron and alumina, while silica is sourced from sand, chalk, and bauxite. Contemporary manufacturing of Portland cement is a significant source of carbon dioxide emissions, prompting research into reducing its content in concrete through alternative...

Additives and Fillers in Concrete

Additives and Fillers in Concrete

Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...

Alkali Aggregate Reaction in Concrete

Alkali Aggregate Reaction in Concrete

The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...

Soundness of Cement

Soundness of Cement

The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create...