| 摘要: |
| 分析了混凝土膨胀剂MEA产生体积膨胀的原因及其对（普通）硅酸盐水泥强度的影响机理。X射线衍射分析结果说明膨胀剂MEA的膨胀作用与水泥强度发展是协调的。根据试验结果确定了混凝土膨胀剂MEA中石膏掺量的范围为30％～50％（质量分数）；试验结果证明，与混凝土膨胀剂MEA配合使用的（普通）硅酸盐水泥中以（C3S）＝45％～55％和3（C3A）＝6％～10％为宜。 |
| 关键词: 混凝土,膨胀剂,钙矾石,膨胀机理 |
| DOI： |
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| 基金项目: |
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| Research on Mechanism of Expansion of Concrete Expanding Admixture MEA |
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| Abstract: |
| The cause of volume change and the effects on the strength of portland cement ofMEA are analyzed. Through the X-ray analysis, the exparding of MEA is accompanied withthe increasing of the strength of portland cement harmoniously- The experiment resultsshow that CaSO4 in MEA is ranged from 30% to 50% while C3S(45%- 55%) and C3A(6 %-10% ) in portland cements are available. |
| Key words: concrete,expanding admixture,ettringite,expanding mechanism |
