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Binder for pervious concrete and preparation method thereof

A technology of permeable concrete and binder, which is applied in the field of building materials, can solve the problems of high preparation cost, and achieve the effects of good anti-aging performance, enhanced strength, and low toxicity

Active Publication Date: 2017-09-05
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a certain distance from the ideal water permeability coefficient, and the preparation cost is relatively high.

Method used

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Examples

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preparation example Construction

[0023] The present invention also provides the preparation method of above-mentioned permeable concrete binder, it comprises the following steps:

[0024] 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, ferrous sulfate, ferric sulfate, calcium sulfate, sodium gluconate, Water retaining agent and air-entraining agent are added sequentially;

[0025] Insulation and stirring: the mixed solution is insulated and stirred to obtain a permeable concrete binder.

[0026] 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 binder. On the other hand, avoid the formation of insoluble precipitates during the additi...

Embodiment 1

[0035] A permeable concrete adhesive provided in this embodiment is prepared as follows:

[0036] (1) Get the following raw materials according to the weight percentage:

[0037] 40 kg of ammonium sulfate (4%), 40 kg of sodium sulfate (4%), 40 kg of magnesium chloride (4%), 40 kg of potassium sulfate (4%), 50 kg of ferrous sulfate (5%), 40 kg of ferric sulfate ( 4%), 150 kilograms (15%) of calcium sulfate, 3 kilograms (0.3%) of sodium gluconate, 3 kilograms (0.3%) of water retaining agent, 594 kilograms (59.4%) of water.

[0038] (2) Dissolve in the order of ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, ferrous sulfate, ferric sulfate, calcium sulfate, sodium gluconate, 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 complete, stir the mixture eve...

Embodiment 2

[0041] A permeable concrete adhesive provided in this embodiment is prepared as follows:

[0042] (1) Get the following raw materials according to the weight percentage:

[0043] 30 kg (3%) of ammonium sulfate, 30 kg (3%) of sodium sulfate, 30 kg (3%) of magnesium chloride, 30 kg (3%) of potassium sulfate, 70 kg (7%) of ferrous sulfate, 30 kg of ferric sulfate ( 3%), 200 kilograms (20%) of calcium sulfate, 3 kilograms (0.3%) of sodium gluconate, 3 kilograms (0.3%) of water retaining agent, 574 kilograms (57.4%) of water.

[0044] (2) Dissolve in the order of ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, ferrous sulfate, ferric sulfate, calcium sulfate, sodium gluconate, and water retaining agent, and stir for 10 to 50 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 complete, stir the mixture evenly for...

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Abstract

The invention provides a binder for pervious concrete and a preparation method thereof. The binder for pervious concrete comprises, by weight, 1 to 4% of ammonium sulfate, 1 to 4% of potassium sulfate, 1 to 4% of sodium sulfate, 1 to 4% of magnesium chloride, 1 to 4% of ferric sulfate, 2 to 7% of ferrous sulfate, 15 to 25% of calcium sulfate, 0.01 to 0.3% of a water-retaining agent, 0.05 to 0.3% of sodium gluconate, 0 to 0.3% of an air entraining agent and 47.4 to 77.94% of water. The binder for pervious concrete provided by the invention uses inorganic substances as main components, is nontoxic, has good anti-ageing performance, can improve the strength of pervious concrete and has good water retention performance and water penetration performance; and the preparation method is simple in process, short in preparation period, low in cost and applicable to industrial production.

Description

technical field [0001] The invention relates to the field of building materials, and in particular to a permeable concrete binder 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 binder is a key factor directly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/10C04B24/38C04B28/02C04B38/00C04B111/40
CPCC04B28/02C04B40/0039C04B2111/00284C04B2111/40C04B22/147C04B22/12C04B22/149C04B22/143C04B24/10C04B2103/465C04B24/2652C04B24/383C04B24/14C04B14/02C04B38/0038
Inventor 谢安李月婵范玉玲曹光
Owner XIAMEN UNIV OF TECH
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