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Permeable concrete cementitious composition and preparation method thereof

A technology for permeable concrete and composition, applied in the field of permeable concrete cementitious composition and preparation thereof, can solve the problems of insignificant reinforcement effect, poor alkali resistance, high price, prolong construction operation time, improve compressive strength and high cost performance Effect

Active Publication Date: 2021-07-23
河南硕远海绵城市建设发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although the organic cementing agent has a better reinforcing effect, its price is higher and the durability of permeable concrete is caused by poor alkali resistance; although the inorganic cementing agent is lower in price and has better durability of permeable concrete, but its reinforcing effect not obvious

Method used

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  • Permeable concrete cementitious composition and preparation method thereof
  • Permeable concrete cementitious composition and preparation method thereof

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preparation example Construction

[0035] Another aspect of the present invention also provides a preparation method of the permeable concrete cementitious composition, comprising the steps of:

[0036] (1) Add water into the mixing tank, start the mixer, and the rotating speed is 300-500r / min;

[0037] (2) Add anhydrous calcium chloride and sodium chloride into the stirring tank, and stir until completely dissolved for 20-40 minutes;

[0038] (3) Add polyferric sulfate into the stirring tank and stir for 8-15 minutes.

[0039] The addition of water described in step (1) is 30-70 parts.

[0040] Calcium Chloride Anhydrous

[0041] In the present application, the anhydrous calcium chloride is a salt formed by chloride ions and calcium ions, which has strong hygroscopicity and can be used in the fields of chemical reagents, pharmaceutical raw materials, food additives, feed additives, and raw materials for manufacturing calcium metal. .

[0042] In the present application, as a preferred technical scheme, th...

Embodiment 1

[0058] Example 1 provides a permeable concrete bonding composition, which includes the following raw materials in parts by weight: 45 parts of anhydrous calcium chloride, 4 parts of polyferric sulfate, and 1.5 parts of sodium chloride.

[0059] In the anhydrous calcium chloride, CaCl 2 Content ≥ 94wt%; Mg content is 0.3-0.5wt%, as MgCl 2 Meter; free alkali content is 0.1-0.3wt%, as Ca(OH) 2 The polyferric sulfate is an aqueous solution of polyferric sulfate; the content of polyferric sulfate in the aqueous solution of polyferric sulfate is 10wt%; the basicity of the aqueous solution of polyferric sulfate is 8-12%.

[0060] In this example, the CAS number of anhydrous calcium chloride is 10043-52-4, purchased from Zhejiang Dacheng Calcium Co., Ltd.; polyferric sulfate was purchased from Henan Haiyun Environmental Protection Technology Co., Ltd.; the CAS number of sodium chloride is 7647- 14-5, purchased from Lianyungang Guansu Industrial Co., Ltd.

[0061] Another aspect of ...

Embodiment 2

[0067] Example 2 provides a permeable concrete bonding composition, which includes the following raw materials in parts by weight: 30 parts of anhydrous calcium chloride, 1 part of polyferric sulfate, and 1 part of sodium chloride.

[0068] In the anhydrous calcium chloride, CaCl 2 Content ≥ 94wt%; Mg content is 0.3-0.5wt%, as MgCl 2 Meter; free alkali content is 0.1-0.3wt%, as Ca(OH) 2 The polyferric sulfate is an aqueous solution of polyferric sulfate; the content of polyferric sulfate in the aqueous solution of polyferric sulfate is 10wt%; the basicity of the aqueous solution of polyferric sulfate is 8-12%.

[0069] In this example, the CAS number of anhydrous calcium chloride is 10043-52-4, purchased from Zhejiang Dacheng Calcium Co., Ltd.; polyferric sulfate was purchased from Henan Haiyun Environmental Protection Technology Co., Ltd.; the CAS number of sodium chloride is 7647- 14-5, purchased from Lianyungang Guansu Industrial Co., Ltd.

[0070] Another aspect of the ...

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Abstract

The invention discloses a permeable concrete cementing composition, which comprises the following raw materials in parts by weight: 30-60 parts of anhydrous calcium chloride, 1-10 parts of polyferric sulfate, and 1-10 parts of sodium chloride -5 servings. In the described anhydrous calcium chloride, Mg content is 0.3-0.5wt%, with MgCl 2 Calculated; free alkali content is 0.1‑0.3wt%, as Ca(OH) 2 count. The polyferric sulfate is an aqueous solution of polyferric sulfate, and the basicity of the aqueous solution of polyferric sulfate is 8-12%. The permeable concrete cementing agent of the present invention is mixed into the permeable concrete, which has both reinforcing effect and durability effect, can significantly prolong the construction operation time, improve the compressive and flexural strength of the permeable concrete, and increase the water permeability. The cost of the invention is 0.9 yuan per kilogram, and the performance is excellent and economical. The invention adopts the minimum cost, obtains the maximum performance, and has the highest cost performance.

Description

technical field [0001] The invention relates to the field of permeable concrete additives, in particular to a permeable concrete cementing composition and a preparation method thereof. Background technique [0002] Permeable concrete, also known as porous concrete, is a kind of porous lightweight concrete made by mixing aggregate, cement, admixture and water in a certain proportion. It does not contain fine aggregate, and the surface of coarse aggregate is covered with a layer of cement. The pulp is bonded to each other to form a honeycomb structure with holes and uniform distribution, which has the characteristics of water permeability, air permeability and light weight. Permeable concrete is different from ordinary concrete. It has the following unique advantages: reducing and absorbing driving noise, good water permeability, high bearing capacity, protected surrounding plants, and no rutting. Permeable concrete floor not only has the function of decoration and beauty, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/14
CPCC04B40/0039C04B22/002C04B22/124C04B22/149
Inventor 张文亮王宗泽李建国张伟仹王宏军张卫东张辉史志钊魏利明欧素原张继根刘国晓
Owner 河南硕远海绵城市建设发展有限公司
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