Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete for prefabricated tunnel lining segment and preparation method of concrete
The invention discloses concrete for a prefabricated tunnel lining segment and a preparation method of the concrete. The concrete is prepared from 310 to 350 parts of Portland cement, 80 to 100 partsof high-quality fly ash; 240 to 300 parts of broken stone with the thickness of 5 to 10mm; 900 to 980 parts of broken stone with the thickness of 10 to 25mm; 630 to 670 parts of medium sand; 3.0 to 4.0 parts of a polycarboxylic acid high-performance water reducing agent; 1.5 to 2.5 parts of a coagulation accelerator; and 130-140 parts of water, the method comprises the following steps: 2/3 of water cement, fly ash, sand are stirred for 15 seconds, then the crushed stone, 1/3 of the water, the polycarboxylic acid high-performance water reducing agent and the coagulation accelerator are added and then stirred together for 90 seconds, and then the water reducing agent is added and stirred for 60 to 80 seconds. The concrete for the prefabricated tunnel lining segment has the advantages that the solidification speed is high, the content of bubbles in the concrete is small, and the strength of a solidified concrete wall body is high.
本发明公开了一种预制隧道衬砌管片用混凝土及其配制方法，包括硅酸盐水泥310‑350份，优质粉煤灰80‑100份，5‑10mm碎石240‑300份，10‑25mm碎石900‑980份，中砂630‑670份，聚羧酸高性能减水剂3.0‑4.0份，促凝剂1.5‑2.5份，水130‑140份，先将先2/3的水，水泥，粉煤灰，砂搅拌15秒，然后将碎石，1/3的水，聚羧酸高性能减水剂以及促凝剂投入后再一起搅拌90秒，再加入减水剂搅拌60‑80秒，本发明预制隧道衬砌管片用混凝土的凝固速度快，混凝土中含泡少，凝固后的混凝土墙体强度高。
Concrete for prefabricated tunnel lining segment and preparation method of concrete
The invention discloses concrete for a prefabricated tunnel lining segment and a preparation method of the concrete. The concrete is prepared from 310 to 350 parts of Portland cement, 80 to 100 partsof high-quality fly ash; 240 to 300 parts of broken stone with the thickness of 5 to 10mm; 900 to 980 parts of broken stone with the thickness of 10 to 25mm; 630 to 670 parts of medium sand; 3.0 to 4.0 parts of a polycarboxylic acid high-performance water reducing agent; 1.5 to 2.5 parts of a coagulation accelerator; and 130-140 parts of water, the method comprises the following steps: 2/3 of water cement, fly ash, sand are stirred for 15 seconds, then the crushed stone, 1/3 of the water, the polycarboxylic acid high-performance water reducing agent and the coagulation accelerator are added and then stirred together for 90 seconds, and then the water reducing agent is added and stirred for 60 to 80 seconds. The concrete for the prefabricated tunnel lining segment has the advantages that the solidification speed is high, the content of bubbles in the concrete is small, and the strength of a solidified concrete wall body is high.
本发明公开了一种预制隧道衬砌管片用混凝土及其配制方法，包括硅酸盐水泥310‑350份，优质粉煤灰80‑100份，5‑10mm碎石240‑300份，10‑25mm碎石900‑980份，中砂630‑670份，聚羧酸高性能减水剂3.0‑4.0份，促凝剂1.5‑2.5份，水130‑140份，先将先2/3的水，水泥，粉煤灰，砂搅拌15秒，然后将碎石，1/3的水，聚羧酸高性能减水剂以及促凝剂投入后再一起搅拌90秒，再加入减水剂搅拌60‑80秒，本发明预制隧道衬砌管片用混凝土的凝固速度快，混凝土中含泡少，凝固后的混凝土墙体强度高。
Concrete for prefabricated tunnel lining segment and preparation method of concrete
一种预制隧道衬砌管片用混凝土及其配制方法
HUANG YINAN (Autor:in) / GU SHUQING (Autor:in) / YAN CHAONAN (Autor:in) / WANG FENG (Autor:in) / LI XIANG (Autor:in)
10.07.2020
Patent
Elektronische Ressource
Chinesisch
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