| 刘 渊.基于煅烧煤矸石的复合水泥强度研究[J].水泥工程,2023,36(4):19-20 |
| 基于煅烧煤矸石的复合水泥强度研究 |
| Strength investigation of composite cement prepared with calcined coal gangue |
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| DOI： |
| 中文关键词: 碳减排,煤矸石,辅助胶凝材料,抗压强度 |
| 英文关键词: carbon emission reduction, coal gangue, supplementary cementitious materials,compressive strength |
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| 中文摘要: |
| 以低品位煤矸石为原料，制备了添加煅烧煤矸石、煅烧煤矸石和石灰石复配料的复合水泥，研究了煅烧煤矸石掺量对水泥抗压强度的影响。结果表明煅烧煤矸石具有明显的火山灰活性，掺入量达到30%时，28 d强度活性指数仍达到87%；石灰石的掺入，对复合水泥的强度发展起到了抑制作用，增加复配料中煅烧煤矸石的比例，可在一定程度上改善水泥强度。 |
| 英文摘要: |
| Composite cement with calcined coal gangue， calcined coal gangue and limestone compound was prepared by using low grade coal gangue as raw materials. Effects of calcined coal gangue content on the compressive strength of cement were investigated. Results show that calcined coal gangue shows obvious pozzolanic activity. Compressive strength activity index of the composite cement at 28 d still reaches 87% even when the dosage reaches 30%. The addition of limestone inhibits the strength development of the composite cement. The compressive strength of the composite cement can be slightly improved by increasing the proportion of calcined c oal gangue in the compound. |
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