根据固体废物协同利用的改性粉的强度特性和微观实验研究
Yu Cheng1, Na Jiang1, Wentong Wang1
1College of Transportation, Shandong University of Science and Technology, Qingdao 266510, China.
Materials (Basel, Switzerland)
|December 17, 2024
概括
这项研究通过将其与飞和水泥等工业废物混合,提高了粉的利用率. 改性粉显示出更好的强度和稳定性,8%的固体废物剂量产生最佳结果.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 废物管理 废物管理
背景情况:
- 粉是一种难以管理的石材加工副产品,储存量很大.
- 综合利用粉对于减少废物和资源管理至关重要.
研究的目的:
- 与工业废物 (飞,泥,红泥) 协同利用粉.
- 用水泥作为固化剂制备改性粉.
- 通过机械和耐久性测试来分析改性粉的性能.
主要方法:
- 使用不同剂量的工业废物和水泥制备改性粉.
- 在7日和28日进行无限制的压力强度测试.
- 干燥和湿循环试验. 干燥和湿循环试验.
- 扫描电子显微镜 (SEM) 分析.
主要成果:
- 经过修改的粉在7天后达到压力强度超过2.5 MPa,在28天后达到压力强度超过4 MPa.
- 8%的固体废物剂量显示出最佳性能.
- 用8%飞灰修改的粉表现出优越的湿和干循环阻力 (膨胀/收缩<0.5%).
结论:
- 粉与工业废物和水泥的协同利用是可行的.
- 建议在实际应用中使用8%的固体废物剂量以获得最佳性能.
- 这项研究为处理粉和其他固体废物提供了一种新的方法.
相关概念视频
Wood Products
79
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
79
Structural Properties and Dimensions of Lumber
80
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
80
Fiber Reinforced Concrete
68
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
68
Introduction to Wood
208
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
208
Superplasticizers
77
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
77


