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Alkali slag concrete water reducing agent

A technology of concrete water reducer and alkali slag, which is applied in the field of alkali slag concrete water reducer and water reducer, which can solve the problems of difficult construction and high viscosity of alkali slag concrete mixture, so as to achieve good adaptability and improve flow Sexuality and workability, the effect of improving workability

Active Publication Date: 2014-11-19
重庆富普新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, usually under the condition of water-binder ratio, the viscosity of the alkali slag concrete mixture is high, the construction is difficult, and it is difficult to adapt to the development of modern construction technology, which has become a key factor restricting the application and development of alkali slag cement and concrete. Ordinary water reducing agents are not suitable for alkali slag concrete

Method used

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  • Alkali slag concrete water reducing agent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The alkali slag concrete water reducer of this embodiment is composed of the following components by mass: Ba(NO 3 ) 2 : 2 parts; Pb(NO 3 ) 2 : 10 copies; (C 10 h 6 CH 2 NaSO 3 ) n : 22 copies; C 20 h 24 CaO 10 S 2 : 3 copies; C 18 h 29 NaO 3 S: 1 serving.

[0018] The alkali slag concrete water reducing agent of this embodiment is made by the following method:

[0019] a. Weigh the raw materials according to the ratio: the raw materials selected in this step are as follows:

[0020] Ba(NO 3 ) 2 : Produced by Chongqing Chuanjiang Chemical Reagent Factory, molecular weight 261.35, white powder, density 3.24g / cm 3 .

[0021] Pb(NO 3 ) 2 : Produced by Chongqing Chuanjiang Chemical Reagent Factory, molecular weight 331.23, white cubic or monoclinic crystal, hard and shiny, density 4.53g / cm 3 .

[0022] (C 10 h 6 CH 2 NaSO 3 ) n : Produced by Chongqing Jiangyun Concrete Admixture Co., Ltd., yellow powder.

[0023] C 20 h 24 CaO 10 S 2 : Produ...

Embodiment 2

[0027] The alkali slag concrete water reducer of this embodiment is composed of the following components by mass: Ba(NO 3 ) 2 : 1 part; Pb(NO 3 ) 2 : 20 copies; (C 10 h 6 CH 2 NaSO 3 ) n : 16 copies; C 20 h 24 CaO 10 S 2 : 3 copies; C 18 h 29 NaO 3 S: 1 serving.

[0028] This implementation alkali slag concrete water reducer is made by the following method:

[0029] a. Raw materials are weighed according to the proportioning ratio: the selected raw materials in this step are the same as those in Example 1.

[0030] b. Put the raw materials selected in step a into a vibration mill and grind for 5 minutes to obtain a product.

Embodiment 3

[0032] The alkali slag concrete water reducer of this embodiment is composed of the following components by mass: Ba(NO 3 ) 2 : 2 parts; Pb(NO 3 ) 2 : 15 copies; (C 10 h 6 CH 2 NaSO 3 ) n : 20 copies; C 20 h 24 CaO 10 S 2 : 4 copies; C 18 h 29 NaO 3 S: 1 serving.

[0033] The alkali slag concrete water reducing agent of this embodiment is made by the following method:

[0034] a. Raw materials are weighed according to the proportioning ratio: the selected raw materials in this step are the same as those in Example 1.

[0035] b. Put the raw materials selected in step a into a vibration mill and grind for 5 minutes to obtain a product.

[0036] Utilize the water reducer of embodiment 1-3 respectively to prepare concrete according to the following steps:

[0037] A. Select raw materials: 100 parts of mineral powder, 40 parts of water, 5 parts of NaOH, 144 parts of medium sand, 256 parts of 5-20mm stones, 2 parts of water reducer;

[0038] in:

[0039] Mineral ...

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Abstract

The invention discloses an alkali slag concrete water reducing agent which comprises following components, by mass: 11-23 parts of nitrates, 15-25 parts of a [beta]-naphthalenesulfonate-formaldehyde condensate, 3-5 parts of a lignosulfonate and 1-2 parts of a dodecyl benzene sulfonate. An alkali slag concrete is a WG-slag concrete and herein the WG represents for water glass; the [beta]-naphthalenesulfonate-formaldehyde condensate is [beta]-sodium naphthalenesulfonate-formaldehyde condensate; the lignosulfonate is calcium lignosulfonate; the dodecyl benzene sulfonate is sodium dodecyl benzene sulfonate; and the nitrates is a mixture composed of 1-3 parts of barium nitrate and 10-20 parts of lead nitrate. The water reducing agent can account for more than 20% of the WG-slag concrete, is good in adaptation with the WG-slag concrete, can effectively reduce an initial viscosity of newly-mixed WG-slag concrete, can improve a flowability and a workability of the concrete, can reduce a usage amount of the WG-slag concrete and can enhance the strength of the concrete.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a water reducing agent, in particular to a water reducing agent suitable for alkali slag concrete. Background technique [0002] Alkali slag is a cementitious material formed by exciting slag with alkaline compounds of alkali metals. Alkali slag concrete has excellent physical and mechanical properties and durability, and is a green building material that is energy-saving, waste-friendly, and environmentally friendly. [0003] However, usually under the condition of water-binder ratio, the viscosity of the alkali slag concrete mixture is high, the construction is more difficult, and it is difficult to adapt to the development of modern construction technology, which has become a key factor restricting the application and development of alkali slag cement and concrete. Ordinary water reducers are not suitable for alkali slag concrete. [0004] Therefore, it is urgent to develop a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22C04B103/30
Inventor 陈科杨长辉潘群于泽东王新陈雅蓉赵爽
Owner 重庆富普新材料有限公司
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