开发可持续的互锁混凝土铺路块,使用竹叶灰和金属
Ayobami Adebola Busari1,2, Roland Tolulope Loto3, Samuel Ajayi4
1Department of Civil Engineering, Federal University Oye Ekiti, Ekiti State, Nigeria.
Heliyon
|June 6, 2024
概括
这项研究开发了使用竹叶灰和金属的环保混凝土铺路块. 最佳的混合设计增强机械强度,并满足可持续路面施工标准.
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.
- 可持续的建筑材料 可持续的建筑材料
背景情况:
- 对可持续建筑材料的需求不断增长.
- 需要在路面施工中替代传统水泥的环保替代品.
- 农业废弃物 (竹叶灰) 和工业副产品 (金属) 作为补充水泥材料的潜力.
研究的目的:
- 使用竹叶灰和金属来开发一个环保的互锁混凝土路面块.
- 评估这些添加剂的不同百分比对混凝土可加工性,机械性质和微观结构的影响.
- 根据印度道路大会 (IRC) 的标准,确定开发区块是否适合可持续铺路施工.
主要方法:
- 竹叶灰和甲被用作补充的混凝土材料,其替代水平为0%至30%.
- 评估了新鲜混凝土的可加工性 (沉积试验).
- 机械性能 (压力强度) 被评估在固的7,14,28和56天.
- 分析了成熟混凝土的微观结构特征.
主要成果:
- 增加竹叶灰和金属的百分比降低了混凝土的可加工性,在20%的添加量下观察到不可加工性.
- 最多10%的更换显著增加了机械强度28.7%,在5%的增加 (13.62%的增加) 下足够强度用于路面施工.
- 压力强度在5%和10%的增加满足了半刚性路面施工的IRC标准.
- 微观结构分析显示,在添加10%的添加剂后,孔数减少.
结论:
- 使用竹叶灰和金属,可以成功开发环保互锁混凝土路面块.
- 最佳的替换水平 (5-10%) 提高机械强度,并满足路面施工标准.
- 该研究为工程师和研究人员提供了关于在路面改善中利用这些可持续材料的宝贵数据.
更多相关视频
相关概念视频
Masonry Paving
253
The construction of masonry paving involves using materials such as bricks, stones, and concrete masonry units. These materials are chosen for their shape, color, strength, and resistance to abrasion and weathering. Masonry units can be installed dry on a thin layer of sand and a gravel base, or they can be embedded in mortar or asphalt on a concrete slab. For areas subjected to heavy vehicular loads, a rigid base layer of reinforced or unreinforced concrete is recommended. In contrast,...
253
Manufacture of Concrete Masonry Units
93
The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
These wet blocks are then transported for curing, which can occur in one of two environments: a...
These wet blocks are then transported for curing, which can occur in one of two environments: a...
93
Design Example: Sustainability in Concrete Building
165
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
165
Waterproofing and Anti-Bacterial Admixtures in Concrete
77
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
77
Additives and Fillers in Concrete
93
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...
The...
93
Pozzolans
110
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...
Fly ash is...
110


