| 段 琼,黄 靖,向丛阳,刘生超,邹兴芳,王 刚.一次P·O42.5水泥3 d强度下降的原因分析[J].水泥工程,2018,31(1):19-21 |
| 一次P·O42.5水泥3 d强度下降的原因分析 |
| Analysis of the 3 d compressive strength decrease of P·O42.5 cement |
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| DOI： |
| 中文关键词: SO3含量 早期强度 强度下降 天然石膏 |
| 英文关键词: SO3 content early strength strength decrease natrual limestone |
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| 中文摘要: |
| 我公司下属一水泥企业某段时间内，P·O42.5水泥3 d抗压强度突然由30 MPa降至29 MPa以下。为此，通过原因调查分析，找到了P·O42.5水泥天然石膏掺量过低（SO3含量约1.9%）是水泥早期强度下降的主要原因，在增加1%天然石膏掺量后，P·O42.5水泥SO3含量由1.91%提至2.11%后，3d抗压强度达30.7 MPa，且其他性能指标无负面影响，恢复了内部生产较优水平。 |
| 英文摘要: |
| The 3 d compressive strength of the P·O42.5 cement produced by a cement enterprise subordinate to our company decreased from 30 MPa to under 29 MPa. Aiming at this problem, through the investigation and analysis, it is found out that low content of natural limestone[w(SO3)=1.9%] is the main causes, and when the content of natural limestone increases 1%, the content of SO3 in P·O42.5 cement increases from 1.91% to 2.11%, and the 3 d compressive strength is up to 30.7 MPa, and other performance indicators have no negative impact, restoring the better level of internal production. |
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