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Method for preparing concrete preservative

A concrete preservative and preparation process technology, applied in the field of building materials, can solve the problems of poor mechanical properties and durability of concrete, increased slump loss, etc., to improve plasticity and pumpability, improve dispersion performance, The effect of reducing the interfacial bond strength

Inactive Publication Date: 2019-05-03
常州市玉宇化工有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: Aiming at the problem that traditional concrete preservatives lead to poor mechanical properties and durability of concrete and increased slump loss after use, a preparation method of concrete preservatives is provided

Method used

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  • Method for preparing concrete preservative

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Embodiment Construction

[0024]Put sodium alginate and water in a No. 1 beaker at a mass ratio of 1:50 to 1:100, stir with a glass rod for 10 to 20 minutes, let it stand for swelling for 3 to 5 hours, and place the No. 1 beaker in a digital display speed measuring constant temperature magnetic force In the stirrer, under the conditions of temperature 90-95°C and rotation speed 300-500r / min, heat and stir to dissolve for 40-60min, then add multi-armed carbon nanotubes 2-3 times the mass of sodium alginate to No. 1 beaker , at a speed of 400-600r / min, stir and mix for 40-60min, then add sodium periodate 0.02-0.03 times the mass of sodium alginate to No. Under the condition of ~500r / min, heat and stir to dissolve for 40~60min to obtain the modified sodium alginate solution; mix (N-amidino)dodecylacrylamide and methoxypolyethylene glycol in a mass ratio of 1:1 ~2:1 is placed in No. 1 beaker, and 0.1-0.2 times the mass of methoxypolyethylene glycol is added to No. 1 beaker, and 0.07-0.10 times the mass of ...

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Abstract

The invention discloses a method for preparing a concrete preservative and belongs to the technical field of building materials. The method includes: performing mixed enzymolysis on vegetable protein,endopeptidase and water and inactivating the enzyme to obtain an enzymatic hydrolysate; heating, stirring and mixing a modified sodium alginate solution, the enzymatic hydrolysate and a calcium nitrate solution to prepare pretreated enzymatic hydrolysate; stirring and mixing the pretreated enzymatic hydrolysate, a modifying additive, activated chitosan, plant essential oil, a preservative component, modified sepiolite and modified fibers to prepare the concrete preservative. The concrete preservative makes concrete to have excellent mechanical property and durability and can reduce the slumploss of the concrete and improve workability of the concrete, so that the concrete preservative has extensive application range.

Description

technical field [0001] The invention discloses a preparation method of a concrete preservative and belongs to the technical field of building materials. Background technique [0002] Cement concrete has become the most widely used and used building material due to its advantages such as easy availability of raw materials, easy pouring and molding, strong adaptability, high cost performance, and low comprehensive energy consumption. Despite the rapid development of modern material science, no scientists have predicted new building materials that can replace cement concrete. The rapid increase in concrete consumption as infrastructure construction continues to scale has resulted in the construction of a large number of concrete structures in hazardous environments that fail prematurely and unexpectedly. Environmental pollution, climate warming and ecological deterioration caused by the greenhouse effect also put forward sustainable development requirements for concrete materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/40C04B103/61
Inventor 李广仲华薛丞
Owner 常州市玉宇化工有限公司
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