碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响

沈剑羽; 肖建庄; 阳栋; 李水生; 任福民; 郑晓光

doi:10.13568/j.cnki.651094.651316.2024.09.20.0002

您当前的位置：

首页 >

文章列表页 >

碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响

智慧工程与先进制造专题 | 更新时间：2026-01-21

- 碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响
- 碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响
- 新疆大学学报（自然科学版中英文） 2025年42卷第2期页码：238-245
- 作者机构：
  
  1. 同济大学土木工程学院
  2. 广西大学双碳科学与技术研究院
  3. 中国建筑第五工程局有限公司
  4. 北京交通大学环境学院
  5. 上海市政工程设计研究总院(集团)有限公司
- 作者简介：
- 基金信息：
  
  新疆维吾尔自治区重点研发任务专项“基于原位利用技术的生态再生混凝土应用技术示范与长期监测”（2022B03036-3）;国家重点研发计划“城镇建筑垃圾体系化规模应用关键技术研究与示范”（2022YFC3803400）
- DOI：10.13568/j.cnki.651094.651316.2024.09.20.0002
  中图分类号： X799.1;TU521.3
- 纸质出版：2025
- 稿件说明：
移动端阅览
[1]沈剑羽,肖建庄,阳栋,等.碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响[J].新疆大学学报(自然科学版中英文),2025,42(02):238-245.
[1]沈剑羽,肖建庄,阳栋,等.碱激发剂对矿渣/粉煤灰固化工程渣土性能的影响[J].新疆大学学报(自然科学版中英文),2025,42(02):238-245. DOI： 10.13568/j.cnki.651094.651316.2024.09.20.0002.

DOI：10.13568/j.cnki.651094.651316.2024.09.20.0002.

摘要

为了低碳高效地资源化利用工程渣土，采用碱激发材料来固化工程渣土，研究不同碱激发剂激活矿渣/粉煤灰对所得固化土的工作性能、抗压强度、表观密度和线收缩的影响，采用XRD和SEM分析固化土的矿物相和微观形貌，最后分析不同配方固化土的碳排放和碳强比．结果表明：利用碱激发材料固化渣土可得到强度大于10 MPa、密度约1 700kg/m3、线收缩小于1%的建筑材料，固化土的反应产物主要为C-A-S-H、C-S-H和碳酸钙．矿渣的固化效果强于粉煤灰，且碳排放和碳强比更低(约2.2～4.8 kg CO2 e/(t·MPa))．标准养护条件下，相较于水玻璃和氢氧化钠，使用硅灰替代水玻璃，会使固化土的流动性降低4%～5%、抗压强度降低41.9%、碳排放降低41%～43%，但碳强比基本不变；使用生石灰作为激发剂，会使固化土的流动性降低18%～19%、抗压强度降低23.9%、碳排放降低64%～66%，并降低碳强比，但需要养护来保证生石灰的激发效果．

Abstract

To achieve low-carbon and efficient resource utilization of construction spoil(CS)

alkali-activated materials were employed to solidify CS. The effects of different alkali activators on the working performance

compressive strength

bulk density

and linear shrinkage of solidified CS with ground granulated blast furnace slag(GGBFS) and fly ash(FA) were investigated. XRD and SEM techniques were used to analyze the mineral phase and microscopic morphology of solidified CS. Finally

the carbon emissions and carbon-strength ratio of solidified CS with different formulations were analyzed. The results indicate that it is feasible for alkali-activated materials to solidify CS and prepare a solidified CS with a strength exceeding 10 MPa

a bulk density about 1 700 kg/m3

and a linear shrinkage below 1%. The predominant reaction products of solidified CS are C-A-S-H

C-S-H

and calcium carbonate. When GGBFS is employed as a precursor

it exhibits superior curing effectiveness compared to FA while also demonstrating lower carbon emissions and carbon-strength ratio(approximately 2.2～4.8 kg CO2 e/(t·MPa)).Under standard curing conditions

substituting waterglass with silica fume reduced the flowability of solidified CS by 4%～5%

compressive strength by 41.9%

and carbon emissions by 41%～43%

while maintaining similar carbon-strength ratio levels. However

using quicklime as the alkali activator reduced the flowability by 18%～19%

compressive strength by 23.9%

and carbon emissions by 64%～66%. This approach also reduced carbon-strength ratio but necessitated proper curing to ensure its solidification effect.

关键词

Keywords

references

XIAO J Z,SHEN J Y,DUAN Z H,et al.Basic problems and low-carbon technical path of construction spoil recycling[J].Chinese Science Bulletin,2023,68(21):2722-2736.

ZHANG N,DUAN H B,SUN P W,et al.Characterizing the generation and environmental impacts of subway-related excavated soil and rock in China[J].Journal of Cleaner Production,2020,248:119242.

TANNER S,KATRA I,ARGAMAN E,et al.Erodibility of waste(Loess)soils from construction sites under water and wind erosional forces[J].Science of the Total Environment,2018,616:1524-1532.

YIN Y P,LI B,WANG W P,et al.Mechanism of the December 2015 catastrophic landslide at the Shenzhen landfill and controlling geotechnical risks of urbanization[J].Engineering,2016,2(2):230-249.

肖建庄，沈剑羽，高琦，等．工程弃土现状与资源化创新技术[J]．建筑科学与工程学报，2020,37(4):1-13.XIAO J Z,SHEN J Y,GAO Q,et al.Current situation and innovative technology for recycling of engineering waste soil[J].Journal of Architecture and Civil Engineering,2020,37(4):1-13.(in Chinese)

SHEN J Y,XIAO J Z,WEN G X,et al.Orthogonal test of alkali-activated slag solidified construction spoil，fluidity,compressive strength,water resistance and carbon emission[J].Journal of Cleaner Production,2024,434:140201.

谭正日，谭洪波，吕周岭，等．不同类型减水剂对渣土基高流态回填材料性能的影响[J]．硅酸盐通报，2022,41(9):3227-3233.TAN Z R,TAN H B,LYU Z L,et al.Effect of plasticizer type on properties of construction spoil based high-fluid backfill materials[J].Bulletin of the Chinese Ceramic Society,2022,41(9):3227-3233.(in Chinese)

SYED M,GUHARAY A,KAR A.Stabilization of expansive clayey soil with alkali activated binders[J].Geotechnical and Geological Engineering,2020,38(6):6657-6677.

XIAO J Z,SHEN J Y,BAI M Y,et al.Reuse of construction spoil in China:Current status and future opportunities[J].Journal of Cleaner Production,2021,290:125742.

WATTEZ T,PATAPY C,FROUIN L,et al.Interactions between alkali-activated ground granulated blastfurnace slag and organic matter in soil stabilization/solidification[J].Transportation Geotechnics,2021,26:100412.

MURMU A L,PATEL A.Towards sustainable bricks production:An overview[J].Construction and Building Materials,2018,165:112-125.

MAHEEPALA M M A L N,NASVI M C M,ROBERT D J,et al.A comprehensive review on geotechnical properties of alkali activated binder treated expansive soil[J].Journal of Cleaner Production,2022,363:132488.

JIANG D D,SHI C J,ZHANG Z H.Recent progress in understanding setting and hardening of alkali-activated slag(AAS)materials[J].Cement and Concrete Composites,2022,134:104795.

KHALIFA A Z,CIZER¨O,PONTIKES Y,et al.Advances in alkali-activation of clay minerals[J].Cement and Concrete Research,2020,132:106050.

COUDERT E,PARIS M,DENEELE D,et al.Use of alkali activated high-calcium fly ash binder for Kaolin clay soil stabilisation:Physicochemical evolution[J].Construction and Building Materials,2019,201:539-552.

VAN DAMME H,HOUBEN H.Earth concrete.Stabilization revisited[J].Cement and Concrete Research,2018,114:90-102.

YANG K H,JUNG Y B,CHO M S,et al.Effect of supplementary cementitious materials on reduction of CO2emissions from concrete[J].Journal of Cleaner Production,2015,103:774-783.

ROBAYO-SALAZAR R A,MEJIA-ARCILA J M,MEJIA DE GUTIERREZ R.Eco-efficient alkali-activated cement based on red clay brick wastes suitable for the manufacturing of building materials[J].Journal of Cleaner Production,2017,166:242-252.

HABERT G,D’ESPINOSE DE LACAILLERIE J B,ROUSSEL N.An environmental evaluation of geopolymer based concrete production:Reviewing current research trends[J].Journal of Cleaner Production,2011,19(11):1229-1238.

OUELLET-PLAMONDON C,HABERT G.Life cycle assessment(LCA)of alkali-activated cements and concretes[M]//PACHECO-TORGAL P.Handbook of Alkali-Activated Cements,Mortars and Concretes(Chap. 25).Oxford:Woodhead Publishing,2015:663-686.

浏览量

187

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据