Super retarded concrete and its preparation method

Abstract

The invention discloses super retarded concrete and a preparation method thereof. The super retarded concrete comprises the following raw materials in parts by weight: 20-30 parts of quartzite, 30-50 parts of cement, 10-15 parts of super retarder and 100-100 parts of water 150 parts; the ultra-retarded concrete is made by the following steps: the first step, the quartz rock is cleaned, and dried, and the dried quartz rock is ground by a grinding device to obtain quartz stone powder; the second step, the quartz stone powder is mixed with water Mix and stir evenly to prepare quartz stone mortar; the third step is to mix cement and quartz stone mortar to obtain raw material A; the fourth step is to stir raw material A through a mixer, add water and super retarder to obtain super retarded concrete. The fourth fixed rod slides up and down in the working chamber, and the force is decomposed and damped by the telescopic spring, which reduces the damage of the device and ensures the stability and service life of the device.

Description

technical field [0001] The invention relates to the technical field of concrete production, in particular to super retarded concrete and a preparation method thereof. Background technique [0002] Concrete is a general term for composite materials that are composed of gel material, aggregate and water in an appropriate proportion, and then hardened after a certain period of time. It is the most widely used artificial civil construction material in the world. Concrete has high hardness, wide sources of raw materials, and low cost, and is widely used in structures such as houses, roads, military projects, and nuclear power plants. [0003] In summer or in special parts of concrete (such as bored piles, underground diaphragm walls, etc.), due to temperature or process requirements, in order to facilitate construction and ensure construction quality, super-retarded concrete is often used. [0004] Grinding devices are often used in the preparation of ultra-retarded concrete. Th...

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Problems solved by technology

[0004] Grinding devices are often used in the preparation of ultra-retarded concrete. The existing grinding devices have fewer grinding times and lower grinding efficiency, resulting in insufficient grinding, which affects the subsequent concrete preparation process, resulting in poor quality of concrete and lack of screening mechanisms. The particle size of the material produced by grinding is inconsistent, and the material is not uniform enough

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