CN101786811B - 一种多元粉体胶凝材料的制备方法 - Google Patents
一种多元粉体胶凝材料的制备方法 Download PDFInfo
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- CN101786811B CN101786811B CN2010100137294A CN201010013729A CN101786811B CN 101786811 B CN101786811 B CN 101786811B CN 2010100137294 A CN2010100137294 A CN 2010100137294A CN 201010013729 A CN201010013729 A CN 201010013729A CN 101786811 B CN101786811 B CN 101786811B
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- 239000000843 powder Substances 0.000 title claims abstract description 116
- 239000000463 material Substances 0.000 title claims abstract description 45
- 239000003469 silicate cement Substances 0.000 claims abstract description 42
- 239000010881 fly ash Substances 0.000 claims abstract description 34
- 239000004575 stone Substances 0.000 claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 235000013312 flour Nutrition 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 17
- 235000019738 Limestone Nutrition 0.000 claims description 11
- 239000006028 limestone Substances 0.000 claims description 11
- 239000004579 marble Substances 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 37
- 230000036571 hydration Effects 0.000 abstract description 4
- 238000006703 hydration reaction Methods 0.000 abstract description 4
- 239000004568 cement Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- 230000002195 synergetic Effects 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound 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- 238000006011 modification reaction Methods 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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[P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
- 230000004083 survival Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
本发明公开了一种多元粉体胶凝材料的制备方法，将细度为600m2/kg～1000m2/kg的磨细石粉、细度为350m2/kg-450m2/kg的磨细矿渣粉和I级或II级粉煤灰按一定比例组合成多元粉体掺合料；然后将细度为300m2/kg-320m2/kg的硅酸盐水泥和多元粉体掺合料按一定的比例混合即可制备出多元粉体胶凝材料。本发明可以用于制备常用强度等级水工混凝土，使混凝土具有良好的抗渗性、抗冻性、抗裂性和较低的水化热温升。该多元粉体胶凝材料的制备方法简单，原料易得，可降低掺合料的费用，改善混凝土性能。
Description
一种多元粉体胶凝材料的制备方法
技术领域
[0001] 本发明属于新材料技术领域，具体涉及一种多元粉体胶凝材料的制备方法。 背景技术
[0002] 混凝土常用的胶凝材料有硅酸盐水泥（含普通硅酸盐水泥、中热硅酸盐水泥)、粉煤灰、磨细矿渣粉、火山灰、石灰石粉等，在混凝土中掺入这些胶凝材料可以节省水泥、减少生产水泥所消耗的能量和减轻生产水泥给人类生存环境带来的负面影响，并可改善混凝土的某些性能。因此，一般会掺一种掺合料或者两种掺合料，使用最为广泛的是掺用粉煤灰。 由于当地粉煤灰资源匮乏，运输距离远等原因，漫湾工程使用了磷矿渣和凝灰岩混合磨制成双掺料（两种掺合料同时使用），景洪工程采用锰铁矿渣与石灰石粉双掺料。
发明内容
[0003] 本发明所要解决的技术问题在于针对上述现有技术中的不足，提供一种多元粉体胶凝材料的制备方法，利用该方法制备出的多元粉体胶凝材料充分发挥水泥和各种掺合料的优势互补作用和协同效应，使混凝土具有良好的抗渗性、抗冻性、抗裂性和较低的水化热温升。该多元粉体胶凝材料的制备方法简单，原料易得，大大降低了掺合料费用，进一步降低混凝土的生产成本。
[0004] 为解决上述技术问题，本发明采用的技术方案是：一种多元粉体胶凝材料的制备方法，其特征在于该方法包括以下步骤：
[0005] (1)将细度为600m2/kg〜1000m2/kg的磨细石粉、细度为350m2/kg-450m7kg的磨细矿渣粉和I级或II级粉煤灰三种原料混合成多元粉体掺合料，所述三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级或II级粉煤灰20% ；
[0006] (2)将步骤⑴中的多元粉体掺合料掺入到细度为300m2/kg-320m7kg的硅酸盐水泥中即制备成多元粉体胶凝材料，所述硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥30 % -60 %，多元粉体掺合料40 % -70 %。
[0007] 上述步骤（1)中所述磨细石粉为灰岩、白云岩、玄武岩、花岗岩、大理岩和砂岩中的一种或者几种。
[0008] 本发明与现有技术相比具有以下优点：本发明制备出的多元粉体胶凝材料由不同细度的矿粉、石粉、粉煤灰与水泥组成，其技术路线是利用超细石粉改善颗粒级配，利用粉煤灰的微珠效应和低热特性以及矿粉的低热特性和强度效应，充分发挥水泥和各种掺合料的优势互补作用和协同效应，使混凝土具有良好的抗渗性、抗冻性、抗裂性和较低的水化热温升。该多元粉体胶凝材料的制备方法简单，原料易得。对粉煤灰运输距离远的工程可降低掺合料费用和混凝土的生产成本，并改善混凝土性能；对运输条件好的工程，可改善混凝土性能。
[0009] 下面通过实施例，对本发明的技术方案做进一步的详细描述。
3具体实施方式
[0010] 原材料选用：选择强度等级为42. 5、细度为300m7kg-320m7kg的硅酸盐水泥；选择细度为600m2/kg〜1000m2/kg的磨细石粉（灰岩、白云岩、玄武岩、花岗岩、大理岩和砂岩中的一种或者几种岩石磨细而成），易磨性好的岩石可采用细度的上限值，易磨性差的岩石可采用细度下限值；选择细度为350-450m2/kg左右的磨细矿渣粉；选择I级或II级粉煤灰。
[0011] 实施例1
[0012] 将细度为1000m2/kg的磨细灰岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0013] 实施例2
[0014] 将细度为900m2/kg的磨细白云岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0015] 实施例3
[0016] 将细度为800m2/kg的磨细花岗岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0017] 实施例4
[0018] 将细度为600m2/kg的磨细玄武岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0019] 实施例5
[0020] 将细度为1000m2/kg的磨细大理岩石粉，细度为350m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥 50%，多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0021] 实施例6
[0022] 将细度为900m2/kg的磨细灰岩石粉，细度为450m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉 30%, I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%，多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0023] 实施例7
[0024] 将细度为600m2/kg的磨细砂岩石粉，细度为400m2/kg的磨细矿渣粉和II级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，II级粉煤灰20%;然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0025] 实施例8
[0026] 将细度为1000m2/kg的磨细灰岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥30%， 多元粉体掺合料70%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0027] 实施例9
[0028] 将细度为1000m2/kg的磨细灰岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为300m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥40%， 多元粉体掺合料60%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0029] 实施例10
[0030] 将细度为1000m2/kg的磨细灰岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为320m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥50%， 多元粉体掺合料50%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0031] 实施例11
[0032] 将细度为1000m2/kg的磨细灰岩石粉，细度为400m2/kg的磨细矿渣粉和I级粉煤灰三种原料组合成多元粉体掺合料，三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级粉煤灰20% ；然后将细度为310m2/kg的硅酸盐水泥和多元粉体掺合料混合制备多元粉体胶凝材料，硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥60%， 多元粉体掺合料40%。由水胶比调节混凝土的强度，从而配制出不同强度等级的混凝土。
[0033] 以上实例制得的多元粉体胶凝材料可用于水工常态混凝土、泵送混凝土、自密实混凝土以及碾压混凝土，该方法充分发挥水泥和各种掺合料的优势互补作用和协同效应， 在强度、抗冻、抗渗性能基本相当条件下，采用本胶凝材料方案可降低混凝土水化热温升 2°C左右。
[0034] 使用注意事项：多元粉体胶凝材料必须与高效减水剂同时使用，当有抗冻要求时，需同时掺用引气剂。当有硫酸盐侵蚀且使用碳酸盐类石粉时，需进行抗硫酸盐性能论证试验。
[0035] 以上所述，仅是本发明的较佳实施例，并非对本发明作任何限制，凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变化，均仍属于本发明技术方案的保护范围内。
Claims (2)
1. 一种多元粉体胶凝材料的制备方法，其特征在于该方法包括以下步骤：(1)将细度为600m2/kg〜1000m2/kg的磨细石粉、细度为350m2/kg-450m7kg的磨细矿渣粉和I级或II级粉煤灰三种原料混合成多元粉体掺合料，所述三种原料的质量百分数为：磨细石粉50%，磨细矿渣粉30%，I级或II级粉煤灰20% ；(2)将步骤（1)中的多元粉体掺合料掺入到细度为300m2/kg-320m2/kg的硅酸盐水泥中即制备成多元粉体胶凝材料，所述硅酸盐水泥和多元粉体掺合料的质量百分数为：硅酸盐水泥30% -60%,多元粉体掺合料40% -70%。
2.按照权利要求1所述的一种多元粉体胶凝材料的制备方法，其特征在于：步骤（1) 中所述磨细石粉为灰岩、白云岩、玄武岩、花岗岩、大理岩和砂岩中的一种或者几种。
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