Flexible concrete for seam sealing

A flexible concrete and special fiber technology, applied in the field of inorganic non-metallic materials and pavement concrete repair, can solve the problems of inability to effectively adapt to the impact of external forces, poor deformation ability, insufficient cohesion, etc., and achieve excellent waterproof performance and weather resistance. High flexibility and deformability, the effect of improving adhesion

Active Publication Date: 2016-01-13
北京宝辰联合科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages of traditional repair materials, epoxy repair materials are too rigid and have poor deformation ability, which cannot effectively adapt to the impact of external forces and are brittle under the rolling of vehicles; while asphalt repair materials have high deformation ability and good toughness. However, the bonding force is insufficient, and the melting point is low, and it is greatly affected by the environment. Thermal expansion and contraction can easily cause it to fall off from the old base surface. The purpose of the present invention is to provide a flexible concrete for caulking

Method used

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  • Flexible concrete for seam sealing

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Experimental program
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Effect test

Embodiment 1

[0048] A kind of flexible concrete for caulking according to the present invention, the flexible concrete comprises the following components in mass fraction ratio: 15% of inorganic cementitious material, 2.0% of expansion material, 8% of filler, 41.5% of stone, 30% of sand, high strength 0.5% of special fiber, 6.0% of polymer additive, and the rest is water.

[0049] The inorganic cementitious material is a mixture of 10% of PⅡ52.5 portland cement and 5.0% of low-alkali 42.5 sulphoaluminate cement.

[0050] The expansion material is UEA expansion agent.

[0051] The filler is 200 mesh heavy calcium.

[0052] The stones are pebbles with a particle size of 5-16mm.

[0053] The sand is washed sand, and the particle size of the sand is 0-4.75mm.

[0054] The high-strength specialty fiber is aramid fiber. Aramid fibers are fibers that have been surface-treated with silane coupling agents.

[0055] The polymer additive includes the following components in mass fraction ratio: ...

Embodiment 2

[0067] A flexible concrete for caulking according to the present invention, the flexible concrete comprises the following components in proportion by mass fraction: 25% of inorganic gelling material, 1.0% of expansion material, 4% of filler, 40% of stone, 26% of sand, high-strength Special fiber 1.0%, polymer additive 3.0%, and the rest is water.

[0068] The inorganic cementitious material is P.O42.5 portland cement 20% and 42.5 aluminate cement 5.0%.

[0069] The expansion material is UEA expansion agent.

[0070] The filler is 200 mesh grade II fly ash.

[0071] The stones are crushed stones with a particle size of 5-16mm.

[0072] The sand is quartz sand, and the grain size of the sand is 0-4.75mm.

[0073] The high-strength special fiber is a mixture of polyvinyl alcohol fiber and aramid fiber. Polyvinyl alcohol and aramid fibers are fibers that have been surface-treated with silane coupling agents.

[0074] The polymer additive includes the following components in m...

Embodiment 3

[0086] A kind of flexible concrete for caulking according to the present invention, the flexible concrete comprises the following components in proportion by mass fraction: 20% of inorganic gelling material, 1.5% of expansion material, 6% of filler, 48% of stone, 19.2% of sand, high-strength Special fiber 0.8%, polymer additive 4.5%, the rest is water.

[0087] The inorganic cementitious material is P.O42.5 portland cement 10% and 42.5 aluminate cement 10%.

[0088] The expansion material is anhydrite.

[0089] The filler is 200 mesh quartz powder.

[0090] The stones are crushed stones with a particle size of 5-16mm.

[0091] The sand is quartz sand, and the grain size of the sand is 0-4.75mm.

[0092] The high-strength special fiber is a mixture of polyvinyl alcohol fiber and polyamide fiber. Polyvinyl alcohol and polyamide fibers are fibers treated with silane coupling agents.

[0093] The polymer additive includes the following components in mass fraction ratio: 3.0% ...

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Abstract

The present invention discloses flexible concrete for seam sealing, wherein the flexible concrete comprises, by mass, 15-25% of an inorganic cementing material, 1.0-2.0% of an expansion material, 4-8% of a filler, 40-60% of stone, 15-30% of sand, 0.3-1.0% of high strength special fibers, 3-6% of a macromolecule additive, and the balance of water. According to the present invention, the price of the selected raw materials is low, the bonding requirements with the old base surface can be met, and the good water resistance can be provided; and the flexibility and the expansion property of the concrete are improved so as to effectively reduce the pavement load and the harm caused by vibration.

Description

technical field [0001] The invention belongs to the technical field of repairing inorganic non-metallic materials and pavement concrete, and in particular relates to flexible concrete for caulking. Background technique [0002] In order to break the traffic bottleneck of rural economic development and solve the travel difficulties of 900 million farmers, at the beginning of the 21st century, the country began to vigorously build "every village" rural roads, and with the development of urbanization, urban road traffic also More and more cement-based concrete is used for laying, and China's road construction has achieved unprecedented development. With the prolongation of use time, the rolling of overloaded vehicles, climate change, roadbed problems and man-made damage, coupled with factors such as inadequate road maintenance, cement-based concrete pavements are now facing various problems, such as large-scale cracking, large-area Delamination and sunken water accumulation wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06C04B14/02C04B14/06C04B16/06C04B14/38
Inventor 杜洪雨王辉吴杰邢悦
Owner 北京宝辰联合科技股份有限公司
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