处理方法对木-混凝土和木-聚合物复合材料的材料性能和性能的影响
Arafater Rahman1, Mohammad Abu Hasan Khondoker1
1Industrial System Engineering, University of Regina, 3737 Wascana Pkwy, Regina, SK S4S, Canada.
Polymers
|December 17, 2024
概括
化学处理增强了粉的特性,使其成为可持续建筑的强大,耐用和环保材料. 这项研究优化了粉用于混凝土和聚合物复合材料的结构应用.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 聚合物科学 聚合物科学
背景情况:
- 循环经济原则推动了对低成本,高性能复合材料的需求.
- 粉为混凝土和聚合物复合材料提供了一个可持续的替代品,解决了资源枯竭和住房需求.
- 粉固有的特性 (水友性,多孔性,低强度) 限制了其结构应用.
研究的目的:
- 为了研究化学处理 (,西兰) 以提高粉的性能.
- 优化粉用于粉混凝土 (SDC) 和粉聚合物复合材料 (SDPC) 的结构应用.
- 为了评估处理方法的有效性,看看粉的强度,耐湿性和耐用性.
主要方法:
- 使用和西兰剂对粉进行化学处理.
- 评估SDC的压力强度,吸水能力和湿度灵敏度.
- 评估SDPC的抗拉强度和纤维矩阵键稳定性.
- 对纤维矩阵兼容性和故障机制的形态研究.
主要成果:
- 特定的化学处理显著提高了粉的压力和拉力强度,耐湿性和耐用性.
- 确定了粉的最佳条件,以实现结构级性能.
- 在经过处理的料复合材料中观察到增强的纤维矩阵粘附性和疏水性.
- 形态学研究证实,经过处理的基于粉的材料的兼容性和稳定性得到改善.
结论:
- 化学处理有效地将粉转化为可行的,低成本的结构级材料.
- 这项研究为建筑和生物复合材料开发的可持续创新提供了基础.
- 经过处理的粉为建筑材料提供了一种实用,环保的替代方案,促进循环经济原则.
相关概念视频
01:22Fiber 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
01:23Abrasion Resistance of Concrete
103
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
103
01:20Strength of Cement
122
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
122
01:30Superplasticizers
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
01:24Factors Affecting Workability
67
The workability of concrete is a critical characteristic that influences the ease of mixing, handling, and finishing the concrete. It is affected by several factors including water content, aggregate properties, and admixtures like air entrainment. Water plays a fundamental role as it lubricates the concrete mix, facilitating easier movement and placement. However, the water requirement varies depending on the texture and shape of aggregates. Finer particles and angular, rough-textured...
67
01:22Effect of Sea Water on Concrete
171
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
171