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Epoxy composite binary cement-based system elastic concrete and preparation method thereof

A technology of elastic concrete and cement, applied in the field of building materials, can solve the problems of reduced bearing capacity of structures, high maintenance costs, low tensile strength, etc., and achieve the effects of improving bonding performance, reducing corrosion, and improving acid and alkali resistance

Inactive Publication Date: 2020-05-19
湖南瑞弗斯科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of concrete materials, reinforced concrete and prestressed concrete have made great progress, but as a building material, concrete still has some inherent defects in infrastructure construction, such as low tensile strength (generally only compressive About 1 / 10 of the strength), poor toughness and other shortcomings
When it is applied to structures such as bridge piers in mountainous areas, upstream surfaces of water conservancy dams, and bridge expansion joints that require relatively high anti-scouring (impact-resistant) performance of concrete, the concrete erosion of the reinforced protective layer will generally occur after one or two years of service. Wear-off, exposed steel bars, cracks, collapse, and the decline in the bearing capacity of structures can even cause structural collapse, resulting in huge safety hazards and high maintenance costs, thus limiting the repair of many traditional concrete materials. Applications in the field of reinforcement

Method used

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  • Epoxy composite binary cement-based system elastic concrete and preparation method thereof
  • Epoxy composite binary cement-based system elastic concrete and preparation method thereof
  • Epoxy composite binary cement-based system elastic concrete and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0032] The Portland cement used is P.O52.5, the sulfoaluminate cement is R.SAC42.5, and the nano-beads are a kind of spherical, continuous particle size distribution, solid, ultrafine fly ash aluminosilicate Fine beads, the particle size is 2.5um; the filler is 1-4.75mm continuous graded quartz sand, and the apparent density is 2750kg / m 3, the loose bulk density is 1500kg / m 3 , the stone powder content is 3%, the mud content is 0.25%, and the crushing value is 12%; lithium carbonate is a colorless monoclinic crystal or white powder, its purity is 99%, and its density is 2.11g / cm 3 , the melting point is 618°C, the water reducing agent is polycarboxylic acid type high-efficiency water reducing agent, the viscosity of cellulose is 150,000 units, the active ingredient content of boric acid is 99%; the plastic expansion agent is yellow powder, which is based on bauxite mineral The main material is ground in a nitrogen atmosphere, in the presence of carbon and calcium oxide, after...

Embodiment 2

[0039] This embodiment adopts the raw material of ordinary concrete to prepare concrete, and the component and content of its raw material are:

[0040]

Embodiment 3

[0042] The difference between this example and Example 1 is that P.O52.5 is not added, other raw materials and operation steps are consistent with Example 1, and the ratio of raw materials is as described in Table 1.

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Abstract

The invention discloses epoxy composite binary cement-based system elastic concrete and a preparation method thereof. The concrete comprises the following components, 600-700kg / m<3> of Portland cement, 300-350kg / m<3> of sulphoaluminate cement, 100-130kg / m<3> of nanometer beads, 1000-1200kg / m<3> of filler, 2-4kg / m<3> of lithium carbonate, 2-3kg / m<3> of water reducing agent powder, 2-3kg / m<3> of cellulose, 2-4kg / m<3> of boric acid, 60-80kg / m<3> of steel fiber, 3-4kg / m<3> of a plastic expanding agent, 30kg / m<3> of polypropylene fiber, 176-186kg / m<3> of emulsified epoxy resin and 88-93kg / m<3> of acuring agent. The preparation method of the concrete is simple, the prepared concrete has the characteristics of high elasticity, high toughness, good durability and high bonding strength, the cracking risk of the concrete is reduced, and the durability and mechanical properties of the concrete are also improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an epoxy composite binary cement-based system elastic concrete and a preparation method thereof. Background technique [0002] Concrete is an engineering composite material in which the aggregate is cemented into a whole by a cementitious material. The cementitious material is usually cement, and the aggregate is sand and stone, which are mixed with water in a certain proportion and obtained by stirring. As a very important building material, concrete is widely used in civil engineering. [0003] With the continuous development of concrete materials, reinforced concrete and prestressed concrete have made great progress, but as a building material, concrete still has some inherent defects in infrastructure construction, such as low tensile strength (generally only compressive About 1 / 10 of the strength), poor toughness and other shortcomings. When it is applied to st...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B111/20C04B111/23C04B111/34C04B111/50
CPCC04B28/06C04B2111/20C04B2111/23C04B2111/343C04B2111/503C04B2201/50C04B7/02C04B18/08C04B14/06C04B22/10C04B24/383C04B22/0013C04B22/06C04B22/064C04B14/022C04B14/48C04B16/0633C04B2103/302C04B24/281C04B24/32C04B24/16C04B24/121
Inventor 罗熠
Owner 湖南瑞弗斯科技发展有限公司
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