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Preparation method of early-strength low-shrinkage mineral admixture
The invention discloses a preparation method of an early-strength low-shrinkage mineral admixture, and belongs to the technical field of concrete additives, and the preparation method comprises the following steps: step 1, preparing the following raw materials in parts by weight: 50 parts of an early-strength component a, 50 parts of an early-strength component b, 150 parts of an expansion component, 6 parts of an internal curing component and 2 parts of a reinforcing component; and 2, mixing the raw materials, and uniformly mixing in a mechanical stirring manner to obtain the UHPC mineral admixture. According to the invention, based on the hydration mechanism and characteristics of UHPC, mineral admixture raw materials are reasonably selected, and the UHPC which can achieve excellent early-stage mechanical properties without a special maintenance process is prepared, the shrinkage effect generated in the setting and hardening process of the UHPC is compensated, the later-stage hydration degree of a UHPC cementing material system is improved, the density degree of a UHPC matrix is enhanced, and the UHPC cementing material can be used as a high-performance concrete admixture. The invention relates to a mineral admixture for improving UHPC durability.
本发明公开了一种早强低收缩矿物外加剂的制备方法，属于混凝土添加剂技术领域，包括如下步骤：步骤一，按如下重量份比例准备原料：早强组分a 50份、早强组分b 50份、膨胀组分150份、内养组分6份、增强组分2份；步骤二，将上述原料混合后，采用机械搅拌的方式均匀混合，即得到UHPC矿物外加剂。本发明从UHPC水化机理及特性出发，合理选择矿物外加剂原材料组成，制备出一种使UHPC无需特殊养护工艺，即可使UHPC达到优良的早期力学性能，补偿UHPC凝结硬化过程中产生的收缩作用，提高UHPC胶凝材料体系后期水化程度，增强UHPC基体密实程度，提高UHPC耐久性能的矿物外加剂。
Preparation method of early-strength low-shrinkage mineral admixture
The invention discloses a preparation method of an early-strength low-shrinkage mineral admixture, and belongs to the technical field of concrete additives, and the preparation method comprises the following steps: step 1, preparing the following raw materials in parts by weight: 50 parts of an early-strength component a, 50 parts of an early-strength component b, 150 parts of an expansion component, 6 parts of an internal curing component and 2 parts of a reinforcing component; and 2, mixing the raw materials, and uniformly mixing in a mechanical stirring manner to obtain the UHPC mineral admixture. According to the invention, based on the hydration mechanism and characteristics of UHPC, mineral admixture raw materials are reasonably selected, and the UHPC which can achieve excellent early-stage mechanical properties without a special maintenance process is prepared, the shrinkage effect generated in the setting and hardening process of the UHPC is compensated, the later-stage hydration degree of a UHPC cementing material system is improved, the density degree of a UHPC matrix is enhanced, and the UHPC cementing material can be used as a high-performance concrete admixture. The invention relates to a mineral admixture for improving UHPC durability.
本发明公开了一种早强低收缩矿物外加剂的制备方法，属于混凝土添加剂技术领域，包括如下步骤：步骤一，按如下重量份比例准备原料：早强组分a 50份、早强组分b 50份、膨胀组分150份、内养组分6份、增强组分2份；步骤二，将上述原料混合后，采用机械搅拌的方式均匀混合，即得到UHPC矿物外加剂。本发明从UHPC水化机理及特性出发，合理选择矿物外加剂原材料组成，制备出一种使UHPC无需特殊养护工艺，即可使UHPC达到优良的早期力学性能，补偿UHPC凝结硬化过程中产生的收缩作用，提高UHPC胶凝材料体系后期水化程度，增强UHPC基体密实程度，提高UHPC耐久性能的矿物外加剂。
Preparation method of early-strength low-shrinkage mineral admixture
一种早强低收缩矿物外加剂的制备方法
WU YEJUN (author) / LU JUNYAO (author) / HUANG XIANG (author) / HE LI (author) / HUANG QIAOMIN (author) / WANG PENG (author)
2023-06-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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