牡蛎壳粉多孔生态混凝土人工鱼礁的生物附着性及减碳效益
Biological Attachment and Carbon Reduction Effectiveness of Porous Ecological Concrete with Oyster Shell Powder for Artificial Reefs
陈宏楷 1孔利国 2赵玉超 2孟祥斌 2赵峻锋 3栾成帅 1王效华 1臧浩辰 1全洪珠1
作者信息
- 1. 青岛农业大学建筑工程学院,山东青岛 266109
- 2. 日照市岚山区海洋发展有限公司,山东日照 276807
- 3. 赛昇信息技术研究院江苏有限公司,江苏南京 211800
- 折叠
摘要
为降低多孔混凝土的碱度,提高生物附着性并减少碳排放量,以再生粗骨料为原料,以牡蛎壳粉取代部分水泥,制备多孔生态混凝土,并对混凝土试样的力学性能、碱度、生物附着性、碳排放量进行研究.结果表明,与未使用牡蛎壳粉的试样相比:当牡蛎壳粉取代率为20%时,多孔生态混凝土试样的抗压强度降低13.2%,浸出液pH下降0.67,生物附着指数提高33.4%,总碳排放量降低29.8%;当牡蛎壳粉取代率为40%时,抗压强度降低26.7%,浸出液pH下降1.28,生物附着指数提高83.4%,总碳排放量降低59.7%,此时生物附着性最好,碳排放量最少.为提升人工鱼礁生态性能提供了一种有效的技术手段.
Abstract
To reduce alkalinity and carbon emissions of porous concrete and improve its biological attach-ment,porous ecological concrete was prepared with the recycled coarse aggregate as raw material and ce-ment partially replaced by the oyster shell powder.Mechanical properties,alkalinity,biological attach-ment and carbon emissions of concrete samples were studied.Results showed that compared to the con-crete without oyster shell powder,the compressive strength of porous ecological concrete samples with re-placement rate of 20%decreased by 13.2%,the pH value of leachate dropped by 0.67,the biological at-tachment index increased by 33.4%,and the total carbon emissions reduced by 29.8%.When the replace-ment rate of oyster shell powder was 40%,the compressive strength decreased by 26.7%,the pH value of leachate dropped by 1.28,the biological attachment index increased by 83.4%,and the total carbon emis-sions reduced by 59.7%.The optimal replacement rate for biological attachment and carbon emissions was 40%.It provides an effective way to improve ecological performance of artificial reefs.
关键词
人工鱼礁/多孔混凝土/牡蛎壳/生物附着/碳排放量Key words
artificial reefs/porous concrete/oyster shell/biological attachment/carbon emissions引用本文复制引用
基金项目
山东省自然科学基金面上项目(ZR2021ME110)
青岛农业大学横向课题(20210094)
出版年
2024
NETL
NSTL
万方数据