摘要
为研究几种常用无机激发剂对碱矿渣-钢渣胶凝材料抗压强度的影响,试验选取了水玻璃、NaOH、Na2CO3、Na3PO4、Na2SO4这5种激发剂,在改变激发剂种类和配合比的情况下,探讨其对碱激发矿渣-钢渣胶凝材料体系抗压强度的影响。并通过XRD和SEM作进一步表征。结果表明:在激发剂单掺体系中,水玻璃的效果最好,其所作用的强度最高,28 d强度达55.43 MPa;在以水玻璃为主要激发剂的碱激发剂复掺体系中,碱含量为4.5%的水玻璃与碱含量0.5%的Na2CO3的复掺效果相对较好,28 d强度为65.06 MPa,与单掺水玻璃相比,强度提高了约17%,引入的CO32-有利于胶凝体系形成沸石类和方解石类水化产物。
In order to study the influence of several common inorganic activators on the compressive strength of alkali activated slag-steel slag cementitious materials,five kinds of activators such as water glass,NaOH,Na2CO3,Na3PO4 and Na2SO4 were selected to explore its effect on the compressive strength of alkali-activated slag-steel slag cementitious material system by changing the type and ratio of activator.The microstructure was further characterized by XRD and SEM.The results showed that the water glass had the best effect in the single-activator system,and the strength was the highest,which reached 55.43 MPa at 28 d.In the alkali-inducing agent compounding system with water glass as the main activator,the effect of compound admixture of water glass with alkali content of 4.5% and Na2CO3 with alkali content of 0.5% was relatively good,and the strength of 28 d was 65.06 MPa.Compared with single water glass,the strength was increased by about 17%.The introduced CO32- is beneficial to the formation of zeolite and calcite hydration products in the gelling system.
作者
王梦琪
王路明
蔡树元
蒋蕾
符旦云
WANG Mengqi;WANG Luming;CAI Shuyuan;JIANG Lei;FU Danyuan(College of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;College of Materials Science and Engineering,Yancheng University of Technology,Yancheng 224051,China)
出处
《混凝土》
CAS
北大核心
2020年第7期84-87,共4页
Concrete
基金
国家自然科学基金面上项目(5167021646)。
关键词
碱矿渣-钢渣
激发剂
抗压强度
水化产物
alkali activated slag-steel slag
activator
compressive strength
hydration product
