Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Super early strength concrete and preparation method thereof
The invention discloses super early strength concrete and a preparation method thereof. The super early strength concrete is prepared from the following raw materials in parts by weight: 450 to 500 parts of cement, 25 to 100 parts of superfine mineral admixture, 1350 to 2000 parts of sand, 900 to 1100 parts of gravel, 1 to 8 parts of steel fiber, 1 to 8 parts of PVA fiber, 0.1 to 1 part of modified graphene oxide, 2.5 to 25 parts of admixture and 90 to 150 parts of water. The preparation method of the super-early-strength concrete comprises the following steps: uniformly mixing the cement, the superfine mineral admixture, the sand, the gravel, the steel fiber, the PVA fiber and the additive, adding water, and stirring to obtain the super-early-strength concrete. Compared with the prior art, the super-early-strength concrete prepared by the invention has the characteristics of high setting speed under a low-temperature condition, high early strength, good fracture resistance and high bonding strength with an old concrete interface during repairing.
本发明公开了一种超早强混凝土及其制备方法。该超早强混凝土包括以下原料：水泥450‑500份、超细矿物掺合料25‑100份、砂子1350‑2000份、碎石900‑1100份、钢纤维1‑8份、PVA纤维1‑8份、改性氧化石墨烯0.1‑1份、外加剂2.5‑25份、水90‑150份组成。所述超早强混凝土的制备方法包括如下步骤：将水泥、超细矿物掺合料、砂子、碎石、钢纤维、PVA纤维、外加剂均匀混合后，加入水，搅拌即得。与现有技术相比，本发明制备的超早强混凝土具备在低温条件下凝结速度快，早期强度高，抗折能力好，修补时与旧混凝土界面的粘接强度高的特点。
Super early strength concrete and preparation method thereof
The invention discloses super early strength concrete and a preparation method thereof. The super early strength concrete is prepared from the following raw materials in parts by weight: 450 to 500 parts of cement, 25 to 100 parts of superfine mineral admixture, 1350 to 2000 parts of sand, 900 to 1100 parts of gravel, 1 to 8 parts of steel fiber, 1 to 8 parts of PVA fiber, 0.1 to 1 part of modified graphene oxide, 2.5 to 25 parts of admixture and 90 to 150 parts of water. The preparation method of the super-early-strength concrete comprises the following steps: uniformly mixing the cement, the superfine mineral admixture, the sand, the gravel, the steel fiber, the PVA fiber and the additive, adding water, and stirring to obtain the super-early-strength concrete. Compared with the prior art, the super-early-strength concrete prepared by the invention has the characteristics of high setting speed under a low-temperature condition, high early strength, good fracture resistance and high bonding strength with an old concrete interface during repairing.
本发明公开了一种超早强混凝土及其制备方法。该超早强混凝土包括以下原料：水泥450‑500份、超细矿物掺合料25‑100份、砂子1350‑2000份、碎石900‑1100份、钢纤维1‑8份、PVA纤维1‑8份、改性氧化石墨烯0.1‑1份、外加剂2.5‑25份、水90‑150份组成。所述超早强混凝土的制备方法包括如下步骤：将水泥、超细矿物掺合料、砂子、碎石、钢纤维、PVA纤维、外加剂均匀混合后，加入水，搅拌即得。与现有技术相比，本发明制备的超早强混凝土具备在低温条件下凝结速度快，早期强度高，抗折能力好，修补时与旧混凝土界面的粘接强度高的特点。
Super early strength concrete and preparation method thereof
一种超早强混凝土及其制备方法
JIN HONGWEI (Autor:in) / JIN JIANMING (Autor:in) / ZHAO SENJIE (Autor:in) / WANG WENWEN (Autor:in) / TIAN ZHANJUN (Autor:in) / FU YANG (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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