Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reactive powder concrete and preparation method thereof
The invention relates to reactive powder concrete and a preparation method thereof. The reactive powder concrete comprises the following components: 28%-32% of cement, 7%-8% of a mineral admixture, 45%-50% of mixed quartz sand, 1%-2% of a water reducing agent, 5%-6% of steel fibers and the balance of water, the mineral admixture is I-grade fine ground slag; the mixed quartz sand comprises the following components: 40-45% of coarse-particle-size quartz sand, 30-35% of medium-particle-size quartz sand and 24-28% of fine-particle-size quartz sand; the preparation method comprises the following steps: pre-stirring mixed quartz sand and steel fiber for 60 seconds, adding cement, a mineral admixture, a water reducing agent and water, and stirring for 2-3 minutes to obtain reactive powder concrete; the cement, the mineral admixture and other active powder materials are used as main materials, and the mixed quartz sand, the water reducing agent, the steel fiber and the water are used as auxiliary materials, so that the compressive strength and the breaking strength of the concrete can be improved, the concrete has very good durability, and the safety aspect can far meet the use requirements.
本发明涉及一种活性粉末混凝土及制备方法，该活性粉末混凝土包含以下组份：水泥28％‑32％、矿物掺合料7％‑8％、混合石英砂45％‑50％、减水剂1％‑2％、钢纤维5％‑6％、其余为水；所述矿物掺合料为Ⅰ级磨细矿渣；所述混合石英砂包括以下组份：粗粒径石英砂40‑45％、中粒径石英砂30‑35％、细粒径石英砂24‑28％；该制备方法包括以下步骤：先将混合石英砂和和钢纤维预搅拌60s，再加入水泥、矿物掺合料、减水剂和水搅拌2‑3min，得到活性粉末混凝土；本发明以水泥和矿物掺合料等活性粉末材料为主，以混合石英砂、减水剂、钢纤维和水为辅，不仅能提高混凝土的抗压、抗折强度，且具有非常好的耐久性能，并且安全方面能远远满足使用要求。
Reactive powder concrete and preparation method thereof
The invention relates to reactive powder concrete and a preparation method thereof. The reactive powder concrete comprises the following components: 28%-32% of cement, 7%-8% of a mineral admixture, 45%-50% of mixed quartz sand, 1%-2% of a water reducing agent, 5%-6% of steel fibers and the balance of water, the mineral admixture is I-grade fine ground slag; the mixed quartz sand comprises the following components: 40-45% of coarse-particle-size quartz sand, 30-35% of medium-particle-size quartz sand and 24-28% of fine-particle-size quartz sand; the preparation method comprises the following steps: pre-stirring mixed quartz sand and steel fiber for 60 seconds, adding cement, a mineral admixture, a water reducing agent and water, and stirring for 2-3 minutes to obtain reactive powder concrete; the cement, the mineral admixture and other active powder materials are used as main materials, and the mixed quartz sand, the water reducing agent, the steel fiber and the water are used as auxiliary materials, so that the compressive strength and the breaking strength of the concrete can be improved, the concrete has very good durability, and the safety aspect can far meet the use requirements.
本发明涉及一种活性粉末混凝土及制备方法，该活性粉末混凝土包含以下组份：水泥28％‑32％、矿物掺合料7％‑8％、混合石英砂45％‑50％、减水剂1％‑2％、钢纤维5％‑6％、其余为水；所述矿物掺合料为Ⅰ级磨细矿渣；所述混合石英砂包括以下组份：粗粒径石英砂40‑45％、中粒径石英砂30‑35％、细粒径石英砂24‑28％；该制备方法包括以下步骤：先将混合石英砂和和钢纤维预搅拌60s，再加入水泥、矿物掺合料、减水剂和水搅拌2‑3min，得到活性粉末混凝土；本发明以水泥和矿物掺合料等活性粉末材料为主，以混合石英砂、减水剂、钢纤维和水为辅，不仅能提高混凝土的抗压、抗折强度，且具有非常好的耐久性能，并且安全方面能远远满足使用要求。
Reactive powder concrete and preparation method thereof
一种活性粉末混凝土及制备方法
JIANG XIANGDONG (Autor:in) / TANG YINXIA (Autor:in)
10.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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