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Anti-seepage concrete material in plateau region and preparation method of concrete material

A technology of impervious concrete and plateau, which is applied in the field of civil engineering materials, can solve the problems of affecting the coating quality and adhesion, reducing the mechanical properties of cement concrete, and increasing the cost of concrete, so as to slow down the migration rate of water molecules and maintain thermodynamic stability resistance, anti-sedimentation effect

Active Publication Date: 2019-08-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the addition of air-entraining admixtures will significantly reduce the mechanical properties of cement concrete, and waterproof or impermeable admixtures are greatly affected by temperature; external defects in concrete affect coating quality and adhesion
In addition, measures such as reducing the water-cement ratio and adjusting raw materials will affect the performance of cement concrete and increase the cost of concrete

Method used

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  • Anti-seepage concrete material in plateau region and preparation method of concrete material
  • Anti-seepage concrete material in plateau region and preparation method of concrete material
  • Anti-seepage concrete material in plateau region and preparation method of concrete material

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preparation example Construction

[0037] Plateau anti-seepage emulsion of the present invention, its preparation method comprises the following steps:

[0038]Step 1: Put paraffin, emulsifier, carboxymethyl cellulose calcium, carrageenan and deionized water in a constant temperature water bath, react in a water bath at 58°C to 72°C until the paraffin melts and the temperature reaches a constant temperature, then take it out. First pour deionized water into the colloid mill for pre-running. After the deionized water is completely pre-wetted in the colloid mill, gradually pour paraffin, emulsifier, carboxymethyl cellulose calcium and carrageenan into the colloid mill, and use a glass rod to Stir in one direction to help the colloid mill shear emulsification, cool to room temperature, and make ionic emulsion;

[0039] Step 2: Prepare difenoconazole and pendimethalin into a solution, add active powder under stirring conditions, and disperse evenly by ultrasonic to obtain a suspension;

[0040] Step 3: After mixin...

Embodiment 1

[0046] A kind of plateau anti-seepage concrete material described in this example is characterized in that, by mass percentage, be: 19.4% cement, 6.3% water, 68.6% aggregate (41.2% coarse aggregate; 27.4% fine aggregate Material), 1.5% alkaline activator, 0.2% polycarboxylate superplasticizer and 4.0% anionic plateau anti-seepage emulsion.

[0047] Plateau anti-seepage emulsion consists of 30.0% paraffin wax, 3.0% active powder (1.0% silica fume; 1.0% fly ash; 1.0% slag powder), 6.0% alkyl alcohol polyether sulfate KS -360, 2.9% carboxymethylcellulose calcium, 0.4% carrageenan, 1.2% difenoconazole, 0.2% pendimethalin and 56.3% deionized water.

[0048] The basic activator consists of 65.0% Al(OH) by mass percent 3 and 35.0% Ca(OH) 2 mixed.

[0049] Aggregate is composed of fine aggregate with a particle size range of less than 5.0mm and coarse aggregate with a particle size range of 5.0mm to 31.5mm; among them, the fine aggregate is medium sand; the coarse aggregate is grav...

Embodiment 2

[0072] A kind of plateau anti-seepage concrete material described in this example is characterized in that, by mass percentage, be: 19.4% cement, 6.3% water, 68.6% aggregate (41.2% coarse aggregate; 27.4% fine aggregate Material), 1.5% alkaline activator, 0.2% polycarboxylate superplasticizer and 4.0% cationic plateau anti-seepage emulsion.

[0073] The plateau anti-seepage emulsion is composed of 30.0% paraffin wax, 3.0% active powder (1.0% silica fume; 1.0% fly ash; 1.0% slag powder), 6.0% 140-72-7 bromide deca Hexaalkylpyridine, 2.9% carmellose calcium, 0.4% carrageenan, 1.2% difenoconazole, 0.2% pendimethalin and 56.3% deionized water are mixed.

[0074] The basic activator consists of 65.0% Al(OH) by mass percent 3 and 35.0% Ca(OH) 2 mixed.

[0075] Aggregate is composed of fine aggregate with a particle size range of less than 5.0mm and coarse aggregate with a particle size range of 5.0mm to 31.5mm; among them, the fine aggregate is medium sand; the coarse aggregate i...

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Abstract

The invention relates to an anti-seepage concrete material in a plateau region and a preparation method of the concrete material. The anti-seepage concrete material in the plateau region is prepared from the following components, in percentages by mass: 18.6%-20.2% of cement, 6.1%-6.5% of water, 65.3%-71.9% of aggregate, 1.0%-2.0% of an alkaline activator, 0.1%-0.3% of a polycarboxylic acid high-efficiency water reducing agent and 2.0%-6.0% of an anti-seepage emulsion in the plateau region, wherein the anti-seepage emulsion in the plateau region includes paraffin. According to the concrete material and method provided by the invention, the seepage resistance of concrete in the plateau region can be effectively improved by a synergistic effect on concrete internal phase-change temperature control, anti-cracking operation and improvement of concrete compactness.

Description

technical field [0001] The invention belongs to the field of civil engineering materials, and in particular relates to a plateau anti-seepage concrete material and a preparation method thereof. Background technique [0002] The plateau area has high altitude, thin air, low air pressure, high annual average radiation, large daily temperature difference, dry climate, little rain and strong wind. Cement concrete is a heterogeneous system composed of coarse and fine aggregates, cement, water and the gas contained in it; the plateau environment will inevitably affect the degree of action of concrete raw materials, thereby reducing the performance of concrete, resulting in the increase of harmful pores inside the concrete, and accelerating the acceleration of various processes. The corrosion of water environment and gas environment will eventually reduce the impermeability of concrete significantly. [0003] The impermeability of cement concrete is mainly improved by anti-crackin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/27C04B2201/50C04B14/02C04B14/06C04B22/064C04B2103/302C04B2103/65
Inventor 王振军霍金阳何锐赵鹏陈华鑫许旭代楠李俊春
Owner CHANGAN UNIV
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