硅酸盐通报2025，Vol.44Issue(4)：1243-1254,12.DOI:10.16552/j.cnki.issn1001-1625.2024.1556
混凝土用生物炭火山灰活性研究综述
Pozzolanic Activity of Biochar Used in Concrete:a Review
摘要
Abstract
Biochar is an ecological carbon-negative material.Adding an appropriate amount of biochar to concrete can improve the mechanical properties and durability of concrete.However,there are still controversies over whether biochar can be used as a pozzolanic material for concrete and whether biochar has pozzolanic activity.In response to this,this paper conducts a literature review and comprehensive analysis on aspects such as the pozzolanic activity of biochar,the impact of biochar on the mechanical properties of concrete,and measures to improve the pozzolanic activity of biochar.The results show that biochar has pozzolanic activity,and its pozzolanic activity is not affected by the loss on ignition,while the reactive SiO2 content is the decisive factor for the pozzolanic activity of biochar.The high pozzolanic activity of biochar can promote the pozzolanic reaction and hydration reaction,which is beneficial to the compressive strength of concrete.Controlling the pyrolysis temperature and fine grinding treatment can help to improve the pozzolanic activity of biochar,but the impact of activation treatment on the pozzolanic activity of biochar still requires in-depth research.关键词
生物炭/混凝土/农林固废/生物质材料/火山灰活性/力学性能Key words
biochar/concrete/agriculture solid waste/biomass material/pozzolanic activity/mechanical property分类
建筑与水利引用本文复制引用
余沁昕,刘问..混凝土用生物炭火山灰活性研究综述[J].硅酸盐通报,2025,44(4):1243-1254,12.基金项目
国家自然科学基金(52378215) （52378215）
