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Preparation method of tailing sand and artificial sand composite concrete

A technology of concrete and tailings sand, which is applied in the field of building materials, can solve the problems of poor concrete fluidity and achieve the effects of increasing application, saving river sand resources, and increasing slump

Active Publication Date: 2021-05-28
LANGFANG RONGSHENG CONCRETE
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Problems solved by technology

[0005] For this reason, the present invention provides a kind of tailings sand and artificial sand composite concrete preparation method, in order to overcome the problem of poor fluidity of concrete prepared from fine gravel tailings sand in the prior art

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  • Preparation method of tailing sand and artificial sand composite concrete

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Embodiment Construction

[0066]In order to make the objects and advantages of the present invention, the present invention will be further described below in connection with the embodiments; it is understood that the specific embodiments described herein are merely intended to illustrate the invention.

[0067]A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that these embodiments are merely used to illustrate the technical principles of the present invention, and is not to limit the scope of the invention.

[0068]It should be noted that the term "upper", "lower", "left", "left", ",", ",", ",", ",", " The direction or positional relationship is only for ease of description, rather than indicating or implying that the device or element must have a specific orientation, and is not understood to limit the limitations of the present invention.

[0069]In addition, it is also necessary to explain that in the desc...

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Abstract

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.

Description

Technical field[0001]The present invention relates to the technical field of building materials, and more particularly to a method for preparing tailings sand and artificial sand composite concrete.Background technique[0002]Tailings are waste after deposit and is the main component of industrial solid waste. According to incomplete statistics, tailings and waste stones discharged every year in the world are 10 billion t. my country has more than 8,000 state-owned mines and more than 110,000 township collective mines. The amount of tailings in the store is nearly 5 billion T. The annual exhausted tailings is higher than 500 million tip, in which the black metallurgical mine is emissively emissions tail mine 1.5 100 million t. At present, the comprehensive utilization rate of my country's tailings is only 7%. Therefore, the comprehensive recycling problem of tailings has been widely concerned by the whole society.[0003]Concrete is one of the most important civil engineering materials ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/00B28C7/02C04B28/00C04B18/12G01N1/38
CPCB28C5/003B28C7/02B28C7/024C04B18/12C04B28/00G01N1/38C04B14/06C04B2103/44Y02W30/91
Inventor 刘伟建陈帅李宁廉超魏磊李刚王有林
Owner LANGFANG RONGSHENG CONCRETE
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