Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of tailing sand and artificial sand composite concrete
The invention relates to a preparation method of tailing sand and artificial sand composite concrete. The method comprises the following steps of step 1, detecting the water absorption rates of tailing sand and artificial sand, and adjusting the addition amount of water and a glue material during concrete preparation according to the water absorption rates of the tailing sand and the artificial sand; step 2, trial-producing concrete according to the addition amount calculated in the step 1, calculating the slump of the concrete, and further adjusting the addition amount of the water and the glue material during preparation according to the slump of the trial-produced concrete; and step 3, determining the required amount of the concrete, determining the concrete stirring duration according to the required amount, and further adjusting the addition amount of the water during concrete preparation according to the stirring duration. According to the method, river sand is replaced by the tailing sand and the artificial sand, due to the fact that the grain size distribution of the tailing sand is concentrated, and the smaller tailing sand is large in cohesiveness and poor in fluidity, the smaller tailing sand is matched with the artificial sand with the large grain size, the slump of the concrete is increased, and the prepared concrete keeps excellent fluidity.
本发明涉及一种尾矿砂与人工砂复合混凝土的制备方法，包括：步骤一、检测尾矿砂与人工砂的吸水率，根据二者吸水率调节混凝土制备时水与胶材的加入量；步骤二、按照步骤一计算完成的加入量试制混凝土，计算混凝土坍落度，根据试制混凝土的坍落度对制备时水与胶材的加入量进行进一步调节；步骤三、确定混凝土需要量，根据需要量确定混凝土搅拌时长，根据搅拌时长进一步调节混凝土制备时水的加入量。本发明通过尾矿砂与人工砂代替河砂，因尾矿砂颗粒级分配比较集中，较小的尾矿砂粘聚性大，流动性差，为此对较小的尾矿砂配比粒度较大的人工砂，加大混凝土的坍落度，使制备的混凝土保持优良的流动性。
Preparation method of tailing sand and artificial sand composite concrete
The invention relates to a preparation method of tailing sand and artificial sand composite concrete. The method comprises the following steps of step 1, detecting the water absorption rates of tailing sand and artificial sand, and adjusting the addition amount of water and a glue material during concrete preparation according to the water absorption rates of the tailing sand and the artificial sand; step 2, trial-producing concrete according to the addition amount calculated in the step 1, calculating the slump of the concrete, and further adjusting the addition amount of the water and the glue material during preparation according to the slump of the trial-produced concrete; and step 3, determining the required amount of the concrete, determining the concrete stirring duration according to the required amount, and further adjusting the addition amount of the water during concrete preparation according to the stirring duration. According to the method, river sand is replaced by the tailing sand and the artificial sand, due to the fact that the grain size distribution of the tailing sand is concentrated, and the smaller tailing sand is large in cohesiveness and poor in fluidity, the smaller tailing sand is matched with the artificial sand with the large grain size, the slump of the concrete is increased, and the prepared concrete keeps excellent fluidity.
本发明涉及一种尾矿砂与人工砂复合混凝土的制备方法，包括：步骤一、检测尾矿砂与人工砂的吸水率，根据二者吸水率调节混凝土制备时水与胶材的加入量；步骤二、按照步骤一计算完成的加入量试制混凝土，计算混凝土坍落度，根据试制混凝土的坍落度对制备时水与胶材的加入量进行进一步调节；步骤三、确定混凝土需要量，根据需要量确定混凝土搅拌时长，根据搅拌时长进一步调节混凝土制备时水的加入量。本发明通过尾矿砂与人工砂代替河砂，因尾矿砂颗粒级分配比较集中，较小的尾矿砂粘聚性大，流动性差，为此对较小的尾矿砂配比粒度较大的人工砂，加大混凝土的坍落度，使制备的混凝土保持优良的流动性。
Preparation method of tailing sand and artificial sand composite concrete
一种尾矿砂与人工砂复合混凝土的制备方法
LIU WEIJIAN (Autor:in) / CHEN SHUAI (Autor:in) / LI NING (Autor:in) / LIAN CHAO (Autor:in) / WEI LEI (Autor:in) / LI GANG (Autor:in) / WANG YOULIN (Autor:in)
28.05.2021
Patent
Elektronische Ressource
Chinesisch
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