Process for preparing steel slag cement concrete by using converter steel slag

A technology of cement concrete and converter steel slag, which is applied to compounds of group 4/14 elements of the periodic table, sustainable waste treatment, solid waste management, etc., can solve the overall safety threat, concrete structure cracking, and plastic deformation capacity of steel slag concrete low level problem

Active Publication Date: 2022-06-03
江苏筑港建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a process for preparing steel slag cement concrete using converter steel slag: by adding 1 / 2 of water and concrete reinforcing agent Stir in the mixer, add cement, steel slag, sand, and gravel after stirring evenly, and continue to stir, and get mixture A after stirring evenly, add the remaining 1 / 2 of water reducer, curing agent and defoamer to Stir in the mixer, mix evenly to get the mixture B, add the mixture B to the mixture A and continue to stir, and get the steel slag cement concrete after mixing evenly, which solves the problem of the low plastic deformation ability of the existing steel slag concrete, which causes The cracking of the concrete structure, and micro-cracks appear on the surface. Under the influence of expansion, the overall safety of the concrete structure is seriously threatened.

Method used

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  • Process for preparing steel slag cement concrete by using converter steel slag
  • Process for preparing steel slag cement concrete by using converter steel slag
  • Process for preparing steel slag cement concrete by using converter steel slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The present embodiment is a preparation method of a concrete reinforcing agent, comprising the following steps:

[0045] S1: add 0.1mol mesitylene, 0.5mol glacial acetic acid and 1.0g cobalt acetate into the reaction kettle, and under the condition that the temperature is 200°C and the stirring rate is 500r / min, air is introduced while stirring, and the air introduction rate is controlled 0.5m 3 / h, after constant temperature stirring for 4h, the reaction product was cooled to room temperature, filtered, and the reaction product was distilled to dryness to obtain Intermediate 1;

[0046] S2: Add 0.1 mol of diethyl phenylphosphonate and 100 mL of N,N-dimethylformamide into a three-necked flask equipped with a stirrer, an air pipe and a constant pressure dropping funnel, and the stirring rate is 200 r / min. Stir for 10 min under conditions, then cool down to below 0 °C, add 0.1 mol of sodium methoxide, and then stir for 10 min at a temperature of 0 °C and a stirring rate ...

Embodiment 2

[0052] The present embodiment is a preparation method of a concrete reinforcing agent, comprising the following steps:

[0053] S1: add 0.1mol mesitylene, 0.5mol glacial acetic acid and 1.5g cobalt acetate into the reaction kettle, at a temperature of 220°C and a stirring rate of 800r / min, the air is fed while stirring, and the air feeding rate is controlled 0.7m 3 / h, the reaction product was cooled to room temperature after stirring at a constant temperature for 5 h, filtered, and the reaction product was distilled to dryness to obtain Intermediate 1;

[0054] S2: Add 0.1 mol of diethyl phenylphosphonate and 100 mL of N,N-dimethylformamide into a three-necked flask equipped with a stirrer, an air tube and a constant pressure dropping funnel, and the stirring rate is 300 r / min. Stir for 20 min under conditions, then cool down to below 0 °C, add 0.1 mol of sodium methoxide, then stir for 20 min at a temperature of 5 °C and a stirring rate of 500 r / min, and then add 0.115 mol ...

Embodiment 3

[0060] The present embodiment is a process for preparing steel slag cement concrete using converter steel slag, comprising the following steps:

[0061] Step 1: Weigh 30 parts of cement, 10 parts of steel slag, 15 parts of sand, 10 parts of crushed stone, 8 parts of concrete reinforcing agent from Example 1, 25 parts of water, and 0.2 part of naphthalene-based superplasticizer according to parts by weight , 0.1 part of diethylenetriamine and 0.1 part of polydimethylsiloxane, for use;

[0062] Step 2: Add 1 / 2 of the water and the concrete reinforcing agent into the mixer for stirring, add cement, steel slag, sand, and gravel to continue stirring after stirring evenly, and obtain mixture A after stirring evenly;

[0063] Step 3: adding the remaining 1 / 2 of the water naphthalene-based superplasticizer, diethylenetriamine and polydimethylsiloxane into the mixer for stirring, and after stirring evenly, mixture B is obtained;

[0064] Step 4: Add the mixture B into the mixture A an...

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Abstract

The invention discloses a process for preparing steel slag cement concrete from converter steel slag, and relates to the field of concrete preparation.The process comprises the steps that 1 / 2 of water and a concrete reinforcing agent are added into a mixing machine to be stirred, cement, steel slag, sand and gravel are added after uniform stirring, stirring continues to be conducted, and a mixture A is obtained after uniform stirring; adding the rest 1 / 2 of the water reducing agent, the curing agent and the defoaming agent into the mixing machine, stirring uniformly to obtain a mixture B, adding the mixture B into the mixture A, continuously stirring, and uniformly stirring to obtain the steel slag cement concrete. The cement and the steel slag serve as main raw materials, a large amount of steel slag can be turned into wealth and fully utilized, the environment is protected, meanwhile, resource waste is avoided, then the concrete reinforcing agent is added, the mechanical property of the steel slag cement concrete is improved, and the defect that existing steel slag cement concrete is prone to cracking is overcome.

Description

technical field [0001] The invention relates to the field of concrete preparation, in particular to a process for preparing steel slag cement concrete by using converter steel slag. Background technique [0002] Steel slag is a solid waste slag composed of smelting reactants, eroded furnace bodies, furnace repair materials, impurities brought by metal charge and slag-forming materials specially added to adjust the properties of steel slag in the process of steel production. In actual production, 15%-20% of steel slag is produced for every 1 ton of steel produced. A large amount of steel slag is directly stacked on the open storage yard near the smelter without treatment, occupying a lot of land resources and steel slag. The heavy metals in the steel will also damage the surrounding ecological environment with the rainwater leaching. If these steel slag is not comprehensively utilized, it will occupy more and more land, pollute the environment, and cause waste of resources; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C07F7/08
CPCC04B28/00C07F7/0838C07F7/0879C04B2201/50C04B2201/52C04B18/142C04B14/02C04B14/06C04B2103/302C04B2103/50C04B2103/0068C04B24/42Y02W30/91
Inventor 胡永涛周伟李伟王雷张驰胡晓军吕杨钱明柱徐慧刘天源
Owner 江苏筑港建设集团有限公司
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