Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fine-grained concrete taking dredged sand as main raw material and preparation method thereof
The invention discloses fine-grained concrete taking dredged sand as a main raw material. The fine-grained concrete is prepared from cement, dredged sand, limestone powder, regenerated glass powder, ahigh-efficiency water reducing agent and water. The invention further discloses a preparation method of the fine-grained concrete with the dredged sand as the main raw material. The preparation method comprises the following steps: S01, weighing the dredged sand, the cement, the limestone powder and the recycled glass powder according to the raw material proportion, adding into a stirring machineand carrying out dry mixing for 1-2 min till even mixing is achieved, S02, adding a polycarboxylate superplasticizer and water by a later mixing method, and performing wet mixing until the mixture isuniformly mixed, S03, adding the uniformly mixed materials into a test mold layer by layer and step by step, firstly adding 1/2 of the materials into the test mold, vibrating on a vibrating table for30 seconds, and then vibrating while adding the materials, and S04, covering the surface of the test mold with a thin film after molding, demolding after 12-24 hours, and curing the test piece to a specified age under standard conditions after demolding to obtain the dredged sand fine-grained concrete. The invention provides fine-grained concrete taking dredged sand as a main raw material and thepreparation method of the fine-grained concrete. The dredged sand can be reasonably utilized to be processed into a building material.
本发明公开了一种以疏浚砂为主要原料的细粒混凝土，包括水泥、疏浚砂、石灰石粉、再生玻璃粉、高效减水剂和水。本发明还公开一种以疏浚砂为主要原料的细粒混凝土的制备方法，包括以下步骤：S01，按照原料配比称取疏浚砂、水泥、石灰石粉、再生玻璃粉加入到搅拌机内干拌1～2分钟至混合均匀；S02，以后掺法加入聚羧酸高效减水剂和水，湿拌至拌合均匀；S03，将拌合均匀的物料分层分次加入试模，首先加入试模1/2的物料在振动台上振动30s，然后边加入物料边振动；S04，成型后在试模表面覆盖薄膜，12～24h后脱模，脱模后试件在标准条件下养护至规定龄期，得到疏浚砂细粒混凝土。本发明提供一种以疏浚砂为主要原料的细粒混凝土及其制备方法，能够合理利用疏浚砂加工成建筑材料。
Fine-grained concrete taking dredged sand as main raw material and preparation method thereof
The invention discloses fine-grained concrete taking dredged sand as a main raw material. The fine-grained concrete is prepared from cement, dredged sand, limestone powder, regenerated glass powder, ahigh-efficiency water reducing agent and water. The invention further discloses a preparation method of the fine-grained concrete with the dredged sand as the main raw material. The preparation method comprises the following steps: S01, weighing the dredged sand, the cement, the limestone powder and the recycled glass powder according to the raw material proportion, adding into a stirring machineand carrying out dry mixing for 1-2 min till even mixing is achieved, S02, adding a polycarboxylate superplasticizer and water by a later mixing method, and performing wet mixing until the mixture isuniformly mixed, S03, adding the uniformly mixed materials into a test mold layer by layer and step by step, firstly adding 1/2 of the materials into the test mold, vibrating on a vibrating table for30 seconds, and then vibrating while adding the materials, and S04, covering the surface of the test mold with a thin film after molding, demolding after 12-24 hours, and curing the test piece to a specified age under standard conditions after demolding to obtain the dredged sand fine-grained concrete. The invention provides fine-grained concrete taking dredged sand as a main raw material and thepreparation method of the fine-grained concrete. The dredged sand can be reasonably utilized to be processed into a building material.
本发明公开了一种以疏浚砂为主要原料的细粒混凝土，包括水泥、疏浚砂、石灰石粉、再生玻璃粉、高效减水剂和水。本发明还公开一种以疏浚砂为主要原料的细粒混凝土的制备方法，包括以下步骤：S01，按照原料配比称取疏浚砂、水泥、石灰石粉、再生玻璃粉加入到搅拌机内干拌1～2分钟至混合均匀；S02，以后掺法加入聚羧酸高效减水剂和水，湿拌至拌合均匀；S03，将拌合均匀的物料分层分次加入试模，首先加入试模1/2的物料在振动台上振动30s，然后边加入物料边振动；S04，成型后在试模表面覆盖薄膜，12～24h后脱模，脱模后试件在标准条件下养护至规定龄期，得到疏浚砂细粒混凝土。本发明提供一种以疏浚砂为主要原料的细粒混凝土及其制备方法，能够合理利用疏浚砂加工成建筑材料。
Fine-grained concrete taking dredged sand as main raw material and preparation method thereof
一种以疏浚砂为主要原料的细粒混凝土及其制备方法
JIANG ZHAOHUA (Autor:in) / ZHANG WEI (Autor:in) / QIN CHANGPEI (Autor:in) / LIU DAZHI (Autor:in) / ZHOU KAI (Autor:in) / CHAI XINGYU (Autor:in) / WANG XINXIN (Autor:in) / TANG CHENJUN (Autor:in)
20.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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