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A platform for research: civil engineering, architecture and urbanism
Concrete composition and application thereof in preparation of self-compacting concrete
The invention relates to the technical field of concrete, and particularly discloses a concrete composition and application thereof in preparation of self-compacting concrete. The concrete composition provided by the invention comprises a material A and a material B, the material A is prepared from the following components in parts by weight: 350 to 400 parts of cement, 750 to 850 parts of sand, 900 to 950 parts of gravel, 120 to 170 parts of fly ash and 150 to 200 parts of water; the material B comprises locust bean gum; the weight ratio of the locust bean gum to the water is (0.3-1.5): 10; the invention also provides an application of the concrete composition in preparation of self-compacting concrete, and the application comprises the following steps: uniformly mixing and stirring the material A to obtain a premix; after the material B is added into the premix, pumping is carried out within 5 min; and the pumping efficiency is controlled to be 70-90 tons/h, and the total single-time pumping amount is controlled to be 12 tons or below. The concrete composition provided by the invention has excellent flowability after being mixed, and has excellent compressive strength after being solidified, so that the concrete composition can meet the use requirements of rail top air ducts with complex structures and more sections.
本申请涉及混凝土技术领域，具体公开了一种混凝土组合物及其在制备自密实混凝土中的应用。本申请提供的混凝土组合物包括A料和B料；所述A料包括以下重量份的组分：水泥350‑400份、砂750‑850份、碎石900‑950份、粉煤灰120‑170份和水150‑200份；所述B料包括槐豆胶；所述槐豆胶与水的重量比为（0.3‑1.5）：10；本申请还提供了上述混凝土组合物在制备自密实混凝土中的应用，包括以下步骤：将A料混合搅拌均匀，获得预混物；在所述预混物中加入B料之后5min内实施泵送；泵送效率控制在70‑90吨/h，单次泵送总量控制在12吨以下。本申请提供的混凝土组合物在拌合后具备优异的流动性，在凝固后具有优异的抗压强度，因此能够满足结构复杂、截面较多的轨顶风道的使用要求。
Concrete composition and application thereof in preparation of self-compacting concrete
The invention relates to the technical field of concrete, and particularly discloses a concrete composition and application thereof in preparation of self-compacting concrete. The concrete composition provided by the invention comprises a material A and a material B, the material A is prepared from the following components in parts by weight: 350 to 400 parts of cement, 750 to 850 parts of sand, 900 to 950 parts of gravel, 120 to 170 parts of fly ash and 150 to 200 parts of water; the material B comprises locust bean gum; the weight ratio of the locust bean gum to the water is (0.3-1.5): 10; the invention also provides an application of the concrete composition in preparation of self-compacting concrete, and the application comprises the following steps: uniformly mixing and stirring the material A to obtain a premix; after the material B is added into the premix, pumping is carried out within 5 min; and the pumping efficiency is controlled to be 70-90 tons/h, and the total single-time pumping amount is controlled to be 12 tons or below. The concrete composition provided by the invention has excellent flowability after being mixed, and has excellent compressive strength after being solidified, so that the concrete composition can meet the use requirements of rail top air ducts with complex structures and more sections.
本申请涉及混凝土技术领域，具体公开了一种混凝土组合物及其在制备自密实混凝土中的应用。本申请提供的混凝土组合物包括A料和B料；所述A料包括以下重量份的组分：水泥350‑400份、砂750‑850份、碎石900‑950份、粉煤灰120‑170份和水150‑200份；所述B料包括槐豆胶；所述槐豆胶与水的重量比为（0.3‑1.5）：10；本申请还提供了上述混凝土组合物在制备自密实混凝土中的应用，包括以下步骤：将A料混合搅拌均匀，获得预混物；在所述预混物中加入B料之后5min内实施泵送；泵送效率控制在70‑90吨/h，单次泵送总量控制在12吨以下。本申请提供的混凝土组合物在拌合后具备优异的流动性，在凝固后具有优异的抗压强度，因此能够满足结构复杂、截面较多的轨顶风道的使用要求。
Concrete composition and application thereof in preparation of self-compacting concrete
一种混凝土组合物及其在制备自密实混凝土中的应用
YANG HANBING (author) / REN WEIFENG (author) / SONG YUJIAN (author)
2023-10-24
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
SELF-COMPACTING CONCRETE - Self-compacting concrete
| Online Contents | 2000