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High-strength impermeable concrete and preparation method thereof

A technology of impermeable concrete and concrete, which is applied in the field of building materials, can solve problems such as leakage and restrict the application of concrete materials, and achieve the effects of simplifying process steps, improving mechanical properties, and improving cohesion

Active Publication Date: 2020-12-25
台州远巢新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the characteristics of ordinary concrete's own structure, leakage often occurs during use, which seriously restricts the application of concrete materials.

Method used

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  • High-strength impermeable concrete and preparation method thereof
  • High-strength impermeable concrete and preparation method thereof
  • High-strength impermeable concrete and preparation method thereof

Examples

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preparation example Construction

[0044] The preparation method of polyurethane aqueous dispersion 1 is:

[0045] Step 1: Add polytetrahydrofuran ether glycol and dimethylol propionic acid into the reactor, start stirring, control the temperature of the reactor at 70°C, slowly add isocyanate, react for 4 hours, add sodium ethylenediamine ethanesulfonate, and react 3 hours;

[0046] Step 2, continue to add acetone into the reactor, stir evenly and then slowly add benzylmethanol, control the temperature of the reactor to 50°C, and react for 5 hours;

[0047] Step 3, continue to add a triethylamine aqueous solution with a mass concentration of 2% in the reactor, control the pH value of the mixture in the range of 6 to 8, stir evenly, remove acetone by distillation under reduced pressure, add organic silicon wetting agent, For defoaming agent, add deionized water to the reactor until the solid content of the mixture is 40%, and stir to obtain the polyurethane aqueous dispersion 1.

[0048] The preparation method...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to high-strength impermeable concrete which is prepared from modified natural river sand, the natural riversand is modified by 3amino butyl triethoxy silane, amino groups are formed on the surfaces of river sand particles, and the river sand particles are crosslinked with macromolecules in a specially-made polyurethane aqueous dispersion, internal gaps are reduced after concrete curing, capillary channels are blocked, the impermeability of concrete is improved, and the high-strength impermeable concrete has excellent mechanical properties. The invention also provides a preparation method of the concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials. More specifically, it relates to a high-strength anti-seepage concrete and a preparation method thereof. Background technique [0002] Concrete is an artificial stone made of cement as the main cementitious material, mixed with water, sand, stones and other building materials in an appropriate proportion, after uniform mixing, compact molding and curing and hardening; concrete has good plasticity and excellent durability and strength properties are widely used in construction, road construction and other fields. However, due to the characteristics of ordinary concrete's own structure, leakage often occurs during use, which seriously restricts the application of concrete materials. [0003] Therefore, it is necessary to provide a concrete material with excellent impermeability to solve the problems in the prior art. Contents of the invention [0004] In order to solve the problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02C08G18/73C08G18/66C08G18/48C08G18/34C08G18/38C08G18/28C08G18/12C04B24/28
CPCC04B20/023C04B24/282C04B28/04C04B2201/50C08G18/12C08G18/348C08G18/4854C08G18/6685C08G18/6692C08G18/73C08G18/3855C08G18/2825C04B14/068C04B24/42C04B2103/50C04B14/00
Inventor 彭材大
Owner 台州远巢新型建材有限公司
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