Concrete taking industrial waste residues as admixture and preparation method thereof

An admixture and concrete technology, applied in the field of building materials, can solve the problems of coagulation affected by setting time, increase of film compactness, and decrease of hydration rate, so as to speed up hydration hardening rate, reduce drying shrinkage, and improve fluidity Effect

Inactive Publication Date: 2020-04-10
青岛康力商砼工程有限公司
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  • Abstract
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Problems solved by technology

[0004] The existing high-strength anti-cracking concrete is mixed with phosphorus slag powder, although it has good workability, strength and crack resistance, but because phosphorus slag is used as an admixture in concrete, it needs to be ground to a certain level. During the grinding process, the phosphorus slag particles become smaller, the chemical bonds in the phosphorus slag glass will break, and F and P are exposed on the surface of the phosphorus slag particles, and the F atoms are unstable. In the presence of positive charges , it is easy to form F - , F - Ca in cement hydration products 2+ ion action, forming CaF on the surface of phosphorus slag particles 2 , CaF 2 and H in cement hydration products + The ions interact to form hydrogen bonds, so that the phosphorus slag particles are adsorbed to the surface of the hydrati

Method used

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  • Concrete taking industrial waste residues as admixture and preparation method thereof
  • Concrete taking industrial waste residues as admixture and preparation method thereof
  • Concrete taking industrial waste residues as admixture and preparation method thereof

Examples

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Effect test

preparation example 1-3

[0038] In Preparation Example 1-3, the sulfamate-based high-efficiency water reducer is selected from the sulfamate-based high-efficiency water reducer sold by Qingdao Hongxia Polymer Material Co., Ltd., and the naphthalene-based high-efficiency water reducer is selected from Linyi Yoshida New Building Materials Co., Ltd. sells the naphthalene-based high-efficiency water reducer with the product number of JT, and the polycarboxylate-based high-efficiency water-reducer is selected from the polycarboxylate-based high-efficiency water-reducer sold by Beijing Tongbanghui Technology Co., Ltd. The molasses is selected from the molasses of the model 65 sold by Jinan Chenglian Chemical Co., Ltd., the polyacrylamide is selected from the polyacrylamide of the model PAM sold by Zhengzhou Zikun Environmental Protection Technology Co., Ltd., and the carboxymethyl cellulose is selected from Dacheng County The carboxymethyl cellulose sold by Xinjie Cellulose Factory is 027, the sodium lignosu...

preparation example 1

[0039] Preparation Example 1: (1) According to the ratio of raw materials in Table 1, dry phosphorus slag at 100° C. for 2 hours to make its water content ≤0.3%; (2) mix 0.5 kg of grinding aid, 1.9 kg of stearic acid 1.2kg of water reducer and 2.5kg of water are mixed, 3.5kg of phosphorus slag, 0.8kg of coal gangue and 0.6kg of gypsum are added, mixed evenly and then ground, the ball-to-material ratio is 18:1, and ground for 120min to make the particle size of the mixed powder The grinding aid is made by mixing triisopropanolamine, triethanolamine and molasses according to the mass ratio of 1:0.2:0.3. The water reducer is sodium lignosulfonate. The chemical composition of phosphorus slag is shown in Table 2 (3) After 1.4kg polyacrylamide, 0.8kg carboxymethyl cellulose and 1.4kg water glass, 0.8kg potassium aluminum sulfate and 0.6kg sodium sulfate are mixed uniformly, add mixed powder, mix and grind, and the obtained particle size is 20μm modified phosphorus slag powder.

[0...

preparation example 2

[0044] Preparation Example 2: (1) According to the raw material ratio in Table 1, dry phosphorus slag at 110° C. for 1.5 h to make its water content ≤0.3%; (2) mix 1 kg of grinding aid, 2.5 kg of stearic acid 1.5kg of water reducing agent mixed with 3kg of water, add 4kg of phosphorus slag, 1.2kg of coal gangue and 0.8kg of gypsum, mix evenly and then grind, the ball-to-material ratio is 19:1, grind for 135min, so that the particle size of the mixed powder is 60μm , the grinding aid is made by mixing triisopropanolamine, triethanolamine and molasses at a mass ratio of 1:0.4:0.5, and the water reducing agent is a sulfamate-based high-efficiency water reducing agent and naphthalene with a mass ratio of 1:1 It is a high-efficiency water reducer, and the chemical composition of phosphorus slag is shown in Table 2; (3) Mix 2kg polyacrylamide, 1.2kg carboxymethyl cellulose with 2.1kg water glass, 1.2kg aluminum potassium sulfate and 0.9kg sodium sulfate After uniformity, the mixed p...

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Abstract

The invention discloses concrete taking industrial waste residues as an admixture and a preparation method thereof. The concrete taking industrial waste residues as an admixture is prepared from the following raw materials in parts by weight: 265-285 parts of cement, 360-400 parts of river sand, 940-970 parts of stones, 160-200 parts of water, 45-55 parts of fly ash, 45-70 parts of slag powder, 380-410 parts of artificial sand, 8-10 parts of an additive and 100-185 parts of modified phosphorus slag powder. The modified phosphorus slag powder comprises the following components: phosphorus slag,a grinding aid, stearic acid, a water reducing agent, water, water glass, aluminum potassium sulfate, sodium sulfate, polyacrylamide, carboxymethyl cellulose, coal gangue and gypsum. The concrete taking industrial waste residues as an admixture has the advantages that the setting time is short, the early strength is high, nitric oxide in automobile exhaust can be adsorbed and degraded, industrialsolid waste is utilized, environmental protection is facilitated, and waste is turned into wealth.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a concrete with industrial waste residue as an admixture and a preparation method thereof. Background technique [0002] Industrial waste slag refers to the solid waste produced in the process of industrial production, such as slag, fly ash, steel slag, liquid slag, phosphorus slag and copper slag, known as "raw materials in the wrong place". If the industrial waste slag is not used, A large amount of stockpiling not only occupies land resources, but also causes serious air pollution, soil pollution and water resource pollution, endangering the natural environment and human health. On the other hand, most industrial waste residues have usable value and are reusable resources. At present, fly ash and slag are active admixtures that have been widely used, while other industrial wastes are potentially active cementitious materials. For example, the chemica...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02C04B24/38
CPCC04B20/023C04B28/04C04B40/0039C04B2111/00017C04B2201/50C04B14/06C04B18/145C04B14/02C04B18/08C04B18/141C04B2103/302C04B18/16C04B2103/52C04B24/08C04B22/00C04B22/142C04B22/147C04B24/2652C04B24/383C04B22/0006C04B22/143
Inventor 张秀云唐鹏张吉臣杨涛赵爽
Owner 青岛康力商砼工程有限公司
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