对Bacillus subtilis自愈混凝土的机械性能进行了研究
Yuanyuan Tie1, Yongcheng Ji1, Hongzhao Zhang1
1School of Civil Engineering and Transportation, Northeast Forestry University, Harbin, 15040, China.
Heliyon
|August 2, 2024
概括
聚乙醇 (PVA) 是自愈混凝土中 Bacillus subtilis 的最佳载体,显著提高了机械性能和耐用性. 最佳的细菌度可以提高性能,但过量的细菌会降低效率.
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:
- 自愈混凝土旨在提高基础设施的寿命.
- 影响自我愈合的关键因素包括细菌活力,载体容量和度.
- 细菌细菌是一种有前途的混凝土修复剂.
研究的目的:
- 评估Bacillus subtilis自愈混凝土的机械性能,使用西萨尔纤维,PVA和扩展矿作为载体.
- 为了确定最佳的载体和细菌度,以提高混凝土的性能.
- 分析不同载体对压力阻力,屈曲阻力,融周期和硫酸盐腐蚀阻力的影响.
主要方法:
- 使用了C30混凝土设计参数.
- 实验包括压力和抗性测试.
- 进行了结解和硫酸盐耐腐蚀性测试.
- 对细菌溶液的度进行了变化 (2od,2.5od,3od),以评估其影响.
主要成果:
- 聚乙烯醇 (PVA) 作为Bacillus subtilis的载体表现出卓越的性能.
- 最佳的细菌度 (2.5od) 最大化了机械性能.
- 与西萨尔纤维和扩展矿载体相比,PVA增强混凝土表现出更高的压缩,和耐腐蚀性.
- 综合机械性能最初随着细菌度的增加而增加,然后下降.
结论:
- 在自我愈合的混凝土中,PVA是Bacillus subtilis最有效的载体.
- 细菌度显著影响自我愈合效率,确定了最佳水平.
- 使用PVA的自愈混凝土显示出增强的耐用性和机械强度.
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