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Application of tri isopropanolamine in cement concrete

Views:1     Author:Site Editor     Publish Time: 2020-11-12      Origin:Site Inquire

In the early stage, diisopropylamine was mainly used in the fields of petrochemical and daily chemical industry. It is also a new type of cement grinding aid raw material, which has the characteristics of improving the 28 d compressive strength of cement [1]. It is an urgent need for technology and industry to replace inorganic salt reinforcing agent with harmless organic compounds. In recent years, a small amount of applications have also begun to appear, such as the concrete synergist made of TIPA by Guangzhou sanjun building materials Co., Ltd. In this paper, based on the above characteristics of diisopropanolamine, the law of the effect of diisopropanolamine on the performance of cement concrete and the method or process of improving the effect of diisopropanolamine are studied, and the application technology of diisopropanolamine to improve the performance of cement concrete is developed.


1 test

Using the same cement, sand, stone, water and water reducing agent, the concrete mixed with diisopropanolamine is compared with the blank concrete without tri isopropanolamine under the same mix proportion, and the influence of adding diisopropanolamine on the workability and compressive strength of concrete is analyzed; the same cement, sand, stone, water and water reducer are used, Under the condition of reducing the amount of cement and adding isopropanolamine, compared with the blank concrete without isopropanolamine, the influence of isopropanolamine on the workability and compressive strength of concrete is analyzed, so as to reduce the cost of concrete on the premise of ensuring the performance of concrete.


As early as 2012, the report issued by the national commercial concrete annual meeting has determined the direction of green and low-carbon development of ready mixed concrete. One of the two established directions is to carry out research and application around improving the service life of concrete engineering [5], and reducing the amount of cement is a direct and effective method.


2 test results

1) The workability of concrete is improved by adding tri isopropanolamine.


2) The compressive strength of cement concrete can be increased by 15% ~ 30% by adding tri isopropanolamine.


3) Triesopropanolamine can be used together with some superplasticizers used in ready mixed concrete, such as polyether polycarboxylate superplasticizer, which can reduce cement consumption by 10% ~ 15%. Taking C30 concrete as an example, it can reduce cement 30 ~ 45 kg / m3, and according to the cost of raw materials, it can reduce the cost of ready mixed concrete by 5 ~ 10 yuan / m3, which has good economic benefits.


4) Adding diisopropanolamine into concrete can improve the resource utilization efficiency and reduce the carbon and oxide emissions from cement production. It is a potential technology to promote the green and low-carbon development of cement concrete, and has significant social benefits.


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