一种生物聚合物战略,以提高混凝土的强度,耐久性和减少收缩
Kunamineni Vijay1, V V S Sarma1, Venkateswarlu Kuruva2
1Department of Civil Engineering, Vishnu Institute of Technology, Bhimavaram, India.
Scientific reports
|March 1, 2026
概括
超吸收聚合物 (SAP) 和细菌自我愈合有效地减少了混凝土的收缩和裂,提高了强度和耐用性. 这种创新方法提高了具体的绩效,特别是在面临治愈挑战的缺水地区.
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.
- 建筑技术 建筑技术 建筑技术
背景情况:
- 混凝土裂是一个常见的问题,通常是由于固化不足造成的,特别是在缺水地区.
- 饮用水的有限供应限制了外部固化方法,导致收缩裂和结构完整性的降低.
- 提高混凝土的长期性能需要创新的解决方案来克服固化的局限性.
研究的目的:
- 探索混凝土固化的替代方法,减少对外部水的依赖.
- 研究超吸收聚合物 (SAP) 和细菌自我修复对混凝土性能的联合影响.
- 通过内部固化和自我愈合机制来缓解收缩裂,并完善混凝土的孔隙结构.
主要方法:
- 准备了四种混凝土混合物:对照组,只有SAP的,只有细菌的,以及结合SAP和细菌的.
- 超吸收聚合物 (SAP) 被用作内部固化剂.
- 一种细菌自我愈合机制被纳入了混凝土混合设计.
- 性能评估包括收缩测试,压力强度,屈曲强度和电阻测量.
主要成果:
- 超吸收聚合物 (SAP) 显著降低了混凝土的收缩.
- 结合SAP和细菌的使用进一步增强了混凝土的机械性能和耐久性.
- 与对照组相比,SAP和细菌治疗剂的组合显示,压力强度在7天和28天分别提高了15.1%和26.4%,相比于对照组.
- 观察到减少收缩和改善的压力强度之间存在很强的相关性.
结论:
- 结合超吸收聚合物 (SAP) 和细菌自我愈合是一种有效的策略,以应对具体的治愈挑战.
- 这种双重方法提高了混凝土的强度和耐用性,特别有利于水资源稀缺地区的建筑.
- 该研究展示了一种可行的方法,通过内部固化和自我愈合技术来提高混凝土结构的弹性和寿命.
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