| 张立力,李思胜,高 振,单海涛,华苏东,蒋 涛,许志杨.高镁镍渣-磷石膏基复合胶凝材料的制备与性能评价[J].水泥工程,2020,33(4):11-14 |
| 高镁镍渣-磷石膏基复合胶凝材料的制备与性能评价 |
| Preparation and performance evaluation of high magnesium nickel slag-phosphogypsum based composite cementitious materials |
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| DOI： |
| 中文关键词: 高镁镍渣,磷石膏,胶凝材料 |
| 英文关键词: high magnesium nickel slag, phosphogypsum, cementitious material |
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| 中文摘要: |
| 采用机械研磨的方式将高镁镍渣（HMNS）和磷石膏（PG）筛分至不同粒度，评价了掺不同粒度高镁镍渣和磷石膏复合胶凝材料的力学性能，并对强度形成机制进行了分析。评价了各种配比下浆体的抗压强度和体积稳定性，并分析了其作用机制。试验表明：以HMNS∶PG∶富钙硅质材料ZL=5.4∶3.6∶1配比制得试样的28 d抗压强度为4.43 MPa；室温环境下养护56 d，SP6线性收缩为1.02×10-3 mm/mm，体积稳定性优良；水化产物Ca(OH)2更少，Ca（OH）2与HMNS-PG体系反应生成了CSH凝胶和AFt，结构更为稳定。 |
| 英文摘要: |
| High-magnesium nickel slag (HMNS) and phosphogypsum (PG) were sieved to different particle sizes by mechanical grinding. The mechanical properties of high-magnesium nickel slag and phosphogypsum composite cementing materials with different particle sizes were evaluated, and the strength formation mechanism was analyzed. The compressive strength and volume stability of the slurry under various mixing ratios were evaluated, and its mechanism of action was analyzed. The test shows that the compressive strength of the sample prepared for 28d is 4.43 MPa with the ratio of HMNS∶PG∶calcium-rich siliceous material ZL =5.4∶3.6∶1;The linear shrinkage of SP6 is 1.02×10-3 mm/mm,and the volume stability was good after 56d curing at room temperature; The hydration product Ca(OH)2,is less. Ca(OH)2 reacts with HMNS-PG system to generate CSH gel and AFt, and the structure is more stable. |
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