A kind of permeable concrete gel agent and preparation method thereof

A technology for permeable concrete and gelling agent, applied in the field of building materials, can solve the problems of toxicity and anti-aging properties that need further research, and achieve the effects of good water retention and permeability, simple preparation method and short cycle.

Active Publication Date: 2020-09-29
XIAMEN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on permeable concrete gel has attracted the attention of scientific researchers. For example, patent No. CN206052494U uses superabsorbent resin to prepare permeable bricks with good water permeability. However, due to the use of organic polymer materials, its toxicity and anti-aging Performance, etc. are for further study

Method used

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preparation example Construction

[0024] The present invention also provides the preparation method of above-mentioned permeable concrete gel, it comprises the following steps:

[0025] Adding and dissolving: adding a predetermined percentage of the above raw materials into water according to the order of addition to obtain a mixed solution, wherein the order of addition is: ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, polyferric sulfate, calcium sulfate, sodium gluconate, sodium silicate , Water-retaining agents are added in sequence;

[0026] Insulation and stirring: the mixed solution is insulated and stirred to obtain a permeable concrete gel.

[0027] The feeding operation is carried out in a fixed order, on the one hand, to ensure the dissolution of raw materials in water, which has an important impact on the formation of a uniform and stable permeable concrete gel. On the other hand, avoid the formation of insoluble precipitates during the addition of raw materials. In addi...

Embodiment 1

[0036] A kind of permeable concrete gel agent provided in this embodiment is prepared as follows:

[0037] (1) Get the following raw materials according to the weight percentage:

[0038] Ammonium sulfate 55 kg (5.5%), sodium sulfate 40 kg (4%), magnesium chloride 20 kg (2%), potassium sulfate 20 kg (2%), sodium silicate 4 kg (0.4%), polyferric sulfate 30 kg (3%), 300 kilograms (30%) of calcium sulfate, 4 kilograms (0.4%) of sodium gluconate, 4 kilograms (0.4%) of water retaining agent, 523 kilograms (52.3%) of water.

[0039] The above raw materials are analytically pure.

[0040](2) Dissolve in the order of ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, polyferric sulfate, calcium sulfate, sodium gluconate, sodium silicate, and water retaining agent, and stir for no less than 10 minutes after each raw material is added. And pay attention to ensure that the mixed solution is stirred to a solution state after each feeding before adding calcium sulfa...

Embodiment 2

[0043] A kind of permeable concrete gel agent provided in this embodiment is prepared as follows:

[0044] (1) Get the following raw materials according to the weight percentage:

[0045] Ammonium sulfate 35 kg (3.5%), sodium sulfate 20 kg (2%), magnesium chloride 5 kg (0.5%), potassium sulfate 5 kg (0.5%), sodium silicate 1.5 kg (0.15%), polyferric sulfate 10 kg (1%), calcium sulfate 250 kg (25%), sodium gluconate 1.5 kg (0.15%), water retaining agent 1 kg (0.1%), water 671 kg (67.1%).

[0046] The above raw materials are analytically pure.

[0047] (2) Dissolve in the order of ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, polyferric sulfate, calcium sulfate, sodium gluconate, sodium silicate, and water retaining agent, and stir for no less than 10 minutes after each raw material is added. And pay attention to ensure that the mixed solution is stirred to a solution state after each feeding before adding calcium sulfate. After the addition is comp...

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Abstract

The invention provides a pervious concrete gelling agent and a preparation method thereof, and relates to the field of constructional materials. The gelling agent is prepared from the following components in percentage by weight: 3.5%-5.5% of ammonium sulfate, 2%-4% of sodium sulfate, 0.5%-2% of magnesium chloride, 0.5%-2% of potassium sulfate, 0.15%-0.4% of sodium silicate, 1%-3% of poly-ferric sulfate, 20%-30% of calcium sulfate, 0.15%-0.4% of sodium gluconate, 0.1%-0.4% of a water retention agent and 52.3%-70% of water. The gelling agent is capable of improving the pervious water retention property of concrete in the premise of ensuring the physical indexes of roads, and improving the compression strength, wear resistance and the like of cement. The gelling agent contains a large amount of metal ions, thus being helpful to sufficiently electrolyze effective ions in the cement, accelerate hydration reaction of the cement, form a network-shaped crystal structure and enhance the intensity of pervious concrete. The preparation method of the gelling agent is simple, short in period, low in cost and suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of building materials, and in particular to a permeable concrete gel and a preparation method thereof. Background technique [0002] Permeable concrete is a kind of construction material mixed with aggregate, cement mineral admixture, water and admixture. The research and application in this field began more than 100 years ago. Permeable concrete can allow rainwater to flow into the ground, effectively replenish groundwater, and alleviate some urban environmental problems such as the sharp drop in urban groundwater levels. It is an excellent pavement material for maintaining ecological balance and alleviating the urban heat island effect, and is the best material for building a "sponge city" . However, due to the limitations of various conditions, there is still a lot of room for improvement in the research and promotion of pervious concrete. [0003] The inventors found that the gelling agent is a key factor direct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B28/02C04B38/00C04B103/44
CPCC04B28/02C04B40/0039C04B2103/445C04B2111/00017C04B2111/00284C04B2111/0075C04B2111/40C04B2201/50C04B22/147C04B22/142C04B22/00C04B22/143C04B24/38C04B2103/465C04B14/02C04B38/0038
Inventor 李月婵谢安曹光
Owner XIAMEN UNIV OF TECH
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