交通节能与环保2024，Vol.20Issue(z1)：31-34,4.DOI:10.3969/j.issn.1673-6478.2024.S1.008
CO2整体快速碳化固化软弱地基技术
CO2 Integral Rapid Carbonization Curing Soft Foundation Technology
摘要
Abstract
In view of the various weak foundation problems often faced in highway engineering construction and the increasing carbon emission problem in the world,the technology adopts active MgO and its related slag(serpentine slag)as the curing material to replace the Portland cement curing agent with high carbon emission,and establishes the overall carbonization curing design method,such as the curing agent content,gas injection pressure,gas injection pipe spacing,surface sealing,and mixing time.CO2 gas with the same quality as the curing agent is injected into the soft foundation after the whole mixing to carry out rapid carbonization and solidification reaction.After the carbonization reaction for 3～6 hours,a series of magnesium series minerals are produced,and the weak soil is cemented and solidified to achieve the rapid reinforcement goal of the soft foundation soil.The strength can reach 2～3 MPa and the bearing capacity of the foundation exceeds 140 kPa.Meet the roadbed design requirements of highway engineering.关键词
软弱基础/矿渣/固化材料/设计方法/碳排放Key words
weak foundation/mineral residue/curing material/design method/carbon emission分类
交通工程引用本文复制引用
东南大学..CO2整体快速碳化固化软弱地基技术[J].交通节能与环保,2024,20(z1):31-34,4.
