通过生物矿物化对混凝土裂的自我修复技术的进展
Meirong Zong1, Wenhao Wang1, Haozhe Ma1
1Department of Civil Engineering, Changzhou University, Changzhou 213164, China.
Materials (Basel, Switzerland)
|November 13, 2025
概括
生物矿物化自愈混凝土使用微生物或酶产生碳酸,可持续地修复宽度高达2.0毫米的裂. 这种创新材料可以提高135%的混凝土强度,并延长建筑物的使用寿命.
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.
- 生物技术是生物技术.
背景情况:
- 生物矿物化自愈混凝土通过利用微生物或酶过程来沉碳酸,提供可持续的裂纹修复.
- 这项技术可以增强结构完整性,并延长建筑物和基础设施的使用寿命.
研究的目的:
- 综合审查生物矿物化自愈混凝土技术的最新进展.
- 分析各种方法,包括微生物,酶诱导和协同修复裂的方法.
主要方法:
- 基于微生物的自我愈合混凝土.
- 由酶诱导的碳酸沉 (EICP).
- 微囊装载的微生物在现场修复.
- 生物无机矿物质协同剂自我愈合技术.
主要成果:
- 审查的方法表明有效的裂自我修复,最大可修复的裂宽度为2.0毫米.
- 混凝土的强度可以显著增加,报告的增强高达135%.
结论:
- 生物矿物自愈混凝土为混凝土结构中可持续裂纹修复提供了可行的策略.
- 这项技术为智能工程应用提供了基础知识,并支持先进建筑材料的开发.
更多相关视频
相关概念视频
Microcracking in Concrete
416
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
416
Fractures: Bone Repair
4.9K
Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
4.9K
Acid Attack on Concrete
684
When acids come into contact with concrete, they initiate a chemical reaction that dissolves the hydrated cement paste. This process leads to softening and structural weakening of the concrete. This issue is commonly observed in environments such as chimneys, sewers, and industrial settings. The severity of the damage increases as the pH of the water interacting with the concrete drops below 6.5. In particular, a pH under 4.5 can cause significant concrete damage.
The rate at which hydrogen...
The rate at which hydrogen...
684
Types of Non-structural Cracks in Concrete
465
Non-structural cracks are primarily of three types: plastic, early-age thermal, and drying shrinkage cracks. Plastic cracks are further classified into plastic shrinkage cracks and plastic settlement cracks.
Plastic shrinkage cracks typically form within hours after the concrete is poured. The concrete's surface dries faster than the bottom, creating tensile stress that the still-plastic concrete cannot withstand, leading to diagonal or randomly patterned cracks on the concrete surface.
Plastic shrinkage cracks typically form within hours after the concrete is poured. The concrete's surface dries faster than the bottom, creating tensile stress that the still-plastic concrete cannot withstand, leading to diagonal or randomly patterned cracks on the concrete surface.
465
Accelerated Curing of Concrete
434
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
434
Curing of Concrete
343
The hydration of cement takes place within the water-filled capillary pores. However, environmental elements can disrupt this process by evaporating water from the concrete surfaces. Sealed concrete with a water-cement ratio below 0.5 experiences self-desiccation, leading to water loss. The water loss in concrete is mitigated by curing. This technique involves keeping the concrete saturated to maintain the necessary temperature and moisture conditions, to optimally fill the spaces in the cement...
343


