Concrete preparation process

A preparation process, concrete technology, applied in the field of concrete preparation technology, can solve the problems of insufficient hydration of cementitious materials, weak strength, affecting concrete workability, strength and durability, etc., to improve the distribution of hydration products, improve Strength, effect of improving micro-uniformity

Active Publication Date: 2019-12-17
四川信敏绿色新建筑材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this mixing process has the following disadvantages: the cementitious material is easy to form small gelatinous aggregates after adding water, resulting in insufficient hydration of the cementitio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 , is a kind of concrete preparation technology disclosed by the present invention, and it comprises the following processing steps:

[0043] S1: After mixing water and surface wetting agent evenly, put in fine aggregate, and stir at a speed of 40r / min for 10s to prepare the first mixture; the weight ratio of water, fine aggregate and surface wetting agent is 1:3:0.01;

[0044] The fine aggregate comprises the following raw materials in weight percentage: 30% machine-made sand and 70% natural sand;

[0045] The surface wetting agent adopts ST-5100 non-ionic gemini surfactant produced by Shanghai Sangjing Chemical Co., Ltd.;

[0046] S2: Add the gel material and dispersant to the first mixture, first stir at a stirring speed of 100r / min for one-third of the total stirring time, then stir at a stirring speed of 60r / min for the remaining two-thirds of the time , the total stirring time is 20s, after stirring evenly, the second mixture is prepared; the w...

Embodiment 1

[0061] The difference between embodiment 10-13 and embodiment 1 is that the weight ratio of fine aggregate, coarse aggregate, fiber filler and water in step 3 is as shown in the table below:

[0062]

[0063]

[0064] The difference between embodiment 14-17 and embodiment 1 is that the weight ratio of admixture and fine aggregate in step 4 is as shown in the following table:

[0065]

[0066] The difference between embodiment 18-21 and embodiment 1 is that the fine aggregate comprises the following raw materials in weight percent:

[0067]

[0068] The difference between Embodiment 22-25 and Embodiment 1 is that the gel material comprises the following raw materials in weight percentage:

[0069]

[0070] The difference between Examples 26-29 and Example 1 is that the content of needle-shaped coarse aggregate in the coarse aggregate is shown in the table below:

[0071]

[0072]

[0073] The difference between embodiments 30-33 and embodiment 1 is that th...

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Abstract

The invention relates to a concrete preparation process, which comprises the following process steps: s1, uniformly stirring water and a surface wetting agent, adding a fine aggregate, and uniformly stirring to obtain a first mixture; wherein the weight ratio of water, fine aggregate and surface wetting agent is 1: (3-7): (0.01-0.03); s2, adding a gel material and a dispersant into the first mixture, and uniformly stirring to obtain a second mixture; wherein the weight ratio of gel material, fine aggregate and dispersant is 1: (1-1.4): (0.008-0.012); s3, adding a coarse aggregate, a fiber filler and water into the second mixture, and uniformly stirring to obtain a third mixture; wherein the weight ratio of fine aggregate, coarse aggregate, fiber filler and water is 1: (2-2.4): (0.06-0.1):(0.08-0.12); and s4, adding an additive into the third mixture and uniformly stirring to prepare concrete slurry; wherein the weight ratio of additive to fine aggregate is (0.02-0.03): 1. The workability and working performance of the mixed soil are improved by reasonably setting the feeding sequence of concrete raw materials.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a concrete preparation process. Background technique [0002] As the main component of concrete, cement will emit a large amount of dust and harmful gases during the production process, seriously polluting the environment. The traditional feeding and mixing of cement concrete is to mix the measured cement, admixture, fine aggregate, coarse aggregate, water and admixture together according to the mix ratio. But this mixing process has the following disadvantages: the cementitious material is easy to form small gelatinous aggregates after adding water, resulting in insufficient hydration of the cementitious material, and a large number of air bubbles are easily formed between each component material, which becomes a weaker link in strength and affects the concrete. Workability, strength and durability. Contents of the invention [0003] The purpose of the present i...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2111/00017C04B2111/00405C04B14/06C04B2103/406C04B18/08C04B18/146C04B18/141C04B2103/408C04B14/02C04B14/48C04B14/386C04B14/46C04B24/42C04B24/283C04B24/2664C04B24/005C04B24/10C04B24/04C04B2103/50
Inventor 秦发廷植福明周志文
Owner 四川信敏绿色新建筑材料科技有限公司
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