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A kind of permeable concrete additive and preparation method thereof

A technology of permeable concrete and additives, applied in the field of building materials, can solve the problems of lack of breathability and permeability of rain and snow, lack of natural water resources to moisten vegetation, and increase the burden of dredging system, so as to achieve simple and easy operation and ensure construction quality. Effect

Active Publication Date: 2016-01-13
FUJIAN CONSTR ENG GRP BUILDING MATERIAL SCI & TECH DEV
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Problems solved by technology

[0002] With the rapid development of the economy, the land is covered by more and more dense concrete pavements or sites, and these impermeable site pavements have heat storage properties, lack of breathability and rain and snow permeability, which exacerbates the deterioration of the climate. The God-given water resources rarely nourish the vegetation and return to the earth, and also increase the burden on the dredging system, and even pollute the rivers

Method used

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  • A kind of permeable concrete additive and preparation method thereof
  • A kind of permeable concrete additive and preparation method thereof
  • A kind of permeable concrete additive and preparation method thereof

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preparation example Construction

[0020] refer to figure 1 Shown, the preparation method of a kind of permeable concrete additive of the present invention comprises the steps:

[0021] Step 10, prepare raw materials according to the following weight percentages, the sum of the content percentages of each raw material is 100%: silica fume 60-80%, polyacrylamide 20-30%, sodium hydroxide 2-4%, sodium chloride 1 ~2%, sodium sulfate 2~6%;

[0022] Step 20, dry the silica fume and polyacrylamide first, then add them to the mill, and grind for 20 to 30 minutes;

[0023] Step 30: Next, add sodium hydroxide, sodium chloride and sodium sulfate into the mill, grind and mix evenly, and then discharge.

[0024] Wherein, the mill is a ball mill, a column mill, a rod mill or a tube mill.

Embodiment 1

[0026] Example 1: Add silica fume and polyacrylamide to the mill after drying and metering, and grind for 20 to 30 minutes, then add sodium hydroxide, sodium chloride, and sodium sulfate measured according to the formula, and grind and mix evenly. Parts by weight are: 60 kg of silica fume, 30 kg of polyacrylamide, 3 kg of sodium hydroxide, 2 kg of sodium chloride, and 5 kg of sodium sulfate. Mix them uniformly to obtain the special additive for permeable concrete of the present invention.

Embodiment 2

[0027] Example 2: Add silica fume and polyacrylamide to the mill after drying and metering, and grind for 20 to 30 minutes, then add sodium hydroxide, sodium chloride, and sodium sulfate measured according to the formula, and grind and mix evenly. Parts by weight are: 68kg of silica fume, 25kg of polyacrylamide, 2kg of sodium hydroxide, 1kg of sodium chloride, and 4kg of sodium sulfate. Mix them uniformly to obtain the special additive for permeable concrete of the present invention.

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Abstract

The invention provides a pervious concrete additive. The pervious concrete additive comprises the following raw materials in percentage by weight: 60-80% of silica fume, 20-30% of polyacrylamide, 2-4% of sodium hydroxide, 1- 2% of sodium chloride and 2-6% of sodium sulfate. The invention also provides a preparation method of the pervious concrete additive. Compared with previous concrete without the additive, the previous concrete with the additive has the advantages that the compressive strength of 1-28 days of the previous concrete is obviously improved, and the long-term strength is also improved. The pervious concrete additive can be used for effectively accelerating the construction progress of the previous concrete, shortening the turnover period of fields, equipment and labor and increasing economic benefits.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a permeable concrete additive and a preparation method thereof. Background technique [0002] With the rapid economic development, the land is covered by more and more dense concrete pavements or sites, and these impermeable site pavements have heat storage properties, lack of breathability and rain and snow permeability, which aggravates the deterioration of the climate. The God-given water rarely nourishes the vegetation and returns to the earth. It also increases the burden on the dredging system, and even pollutes the rivers. Permeable concrete can increase the rainwater infiltrated into the surface and alleviate some urban environmental problems such as the sharp drop of the city's groundwater level. As a new environmentally friendly and ecological road material, it is widely used in the field of road construction. The permeable concrete additive involved in this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B22/14
Inventor 高庆强郑敏升黄金荣张蔚陈乘鑫
Owner FUJIAN CONSTR ENG GRP BUILDING MATERIAL SCI & TECH DEV
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