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A kind of green environmental protection concrete and preparation method thereof

A green and environmentally friendly concrete technology, which is applied in the field of building materials, can solve the problems of poor freeze-thaw resistance of green concrete and achieve the effects of improving freeze-thaw resistance, better performance, and improved freeze-thaw resistance

Active Publication Date: 2022-04-12
广州市长运预拌混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the freeze-thaw resistance of green concrete is poor and needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A green and environment-friendly concrete comprises cementitious material, coarse aggregate, nano-silicon carbide, potassium borate, calcium chloride and water.

[0060] The cementitious materials are China Resources PII42.5R cement, Everbright P.042.5R cement, and Class II fly ash.

[0061] Coarse aggregate is 1-2 stone, particle size is 16mm.

[0062] The preparation method of embodiment 1 green concrete comprises the following steps:

[0063] Step 1) Put 900kg of 1-2 stone into the mixer, add 35kg of nano-silicon carbide, 25kg of potassium borate, and 20kg of calcium chloride in turn, stir at a speed of 500r / min, and stir for 10min to obtain a mixture;

[0064] Step 2) Put 65kg of China Resources PII42.5R cement, 100kg of Everbright P.042.5R cement, 100kg of grade II fly ash, and 160kg of water into the mixture in sequence, and continue stirring at a speed of 500r / min for 10 minutes to obtain Green environmental protection concrete slurry;

[0065] Step 3) Naturally...

Embodiment 2

[0067] Compared with Example 1, the difference is only in:

[0068] In step 1), the addition amount of nano-silicon carbide is 38kg, the addition amount of potassium borate is 27kg, and the addition amount of calcium chloride is 21kg.

Embodiment 3

[0070] Compared with Example 1, the difference is only in:

[0071] In step 1), the addition amount of nano-silicon carbide is 42kg, the addition amount of potassium borate is 29kg, and the addition amount of calcium chloride is 23kg.

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Abstract

The application relates to the technical field of building materials, and specifically discloses a green concrete and a preparation method thereof. Green environmental protection concrete includes the following components in parts by mass: 265-285 parts of cementitious material; 900-1100 parts of coarse aggregate; 35-45 parts of nano-silicon carbide; 25-30 parts of potassium borate; 20-25 parts of calcium chloride ; 160‑175 parts of water; the preparation method is: step 1) uniformly mix coarse aggregate, nano-silicon carbide, potassium borate, and calcium chloride to obtain a mixture; step 2) mix the mixture, cementitious material, water reducer, The synergist is evenly mixed with water to obtain a green and environmentally friendly concrete slurry; step 3) the green and environmentally friendly concrete slurry is naturally cured at room temperature to obtain a green and environmentally friendly concrete. The green and environment-friendly concrete of the present application can infiltrate water into underground pipe network channels, improve the utilization rate of natural precipitation, is green and environment-friendly, has better freeze-thaw resistance performance, and can maintain good compressive strength at the same time.

Description

technical field [0001] This application relates to the technical field of building materials, more specifically, it relates to a kind of green concrete and its preparation method. Background technique [0002] With the development of circular economy, the construction of a resource-saving, environment-friendly society and green construction requirements, the city continues to build, such as laying the ground, building high-rise buildings, etc., the soil will continue to be covered by concrete. The traditional ground paving emphasizes The ground is durable and usable, so most of them use ordinary concrete. Ordinary concrete is artificial stone formed by mixing cementitious materials, water and aggregates in appropriate proportions, and hardened. However, traditional concrete paving The installed pavement is not permeable. After the rainwater falls, it can only block the rainwater on the ground. The accumulated precipitation can only be discharged into surface water sources su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20C04B14/32C04B22/08C04B22/12C04B24/32C04B22/14
CPCC04B28/04C04B2111/29C04B2201/50C04B18/08C04B18/141C04B14/02C04B14/324C04B20/008C04B22/0013C04B22/124C04B24/32C04B22/126C04B24/16C04B22/14C04B2103/302C04B2103/0068
Inventor 林君平刘靖黄旭陈梓荣
Owner 广州市长运预拌混凝土有限公司