CN106348668A

CN106348668A - Plain concrete

Info

Publication number: CN106348668A
Application number: CN201610716998.4A
Authority: CN
Inventors: 芮宝东
Original assignee: BEIJING CCCC QIAOYU SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: BEIJING CCCC QIAOYU SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2017-01-25

Abstract

The invention discloses plain concrete, and relates to a bridge building material. The plain concrete is prepared from cement, sand, gravel, fly ash, ore powder, ultra-high molecular weight polyethylene, T800 fiber, styrene-isoprene-styrene segmented copolymers, water and additives. When the plain concrete is used for restoring a bridge structure, the bonding performance is good; the bonding performance of new and old concrete is good; the intensity is high; cracking cannot easily occur.

Description

A kind of plain concrete

Technical field

The present invention relates to a kind of bridge construction material, more particularly to a kind of plain concrete.

Background technology

In bridge structure in concreting process, sometimes due to deep layer pours not in place or vibrates insufficient, can make The surface defects such as honeycomb, pitted skin in concrete surface, or load change during being used due to bridge, temperature change, mixed The concrete-bridge that the reasons such as the contraction of solidifying soil, foundation deformation, steel bar corrosion cause produces crack.When the problems referred to above occur, Need to carry out concrete recovery project, but new-old concrete layering, hollowing easily occur, comes off when existing conventional concrete is repaired And the problems such as shrinkage cracking.

Content of the invention

In view of the drawbacks described above of prior art, the technical problem to be solved is to provide one kind to be used for repairing bridge The plain concrete that during girder construction, caking property is good, conjunction old and new concret is good, intensity is not high, easy to crack.

For achieving the above object, the invention provides a kind of plain concrete, by cement, sand, rubble, flyash, breeze, surpass High molecular weight polyethylene, t800 fiber, styrene isoprene styrene block copolymer (SIS), water and additive composition, it contains Amount group is divided into:

30 parts of cement, 78 parts of sand, 125 parts of rubble, 7.5 parts of flyash, 9 parts of breeze, 1.5 parts of ultra-high molecular weight polyethylene, 1 part of t800 fiber, 1 part of styrene isoprene styrene block copolymer (SIS), 170 parts of water, 8 parts of additive.

Described ultra-high molecular weight polyethylene intensity is big, resistance to impact, avirulence, splitting resistance, described t800 fibre strength High, adhesive property is good, and described styrene isoprene styrene block copolymer (SIS) easy processing, adhesion strength are strong, ageing resistace Good, added by the cooperation of three of the above material, the caking property of plain concrete is good, intensity is high and not easy to crack.

Preferably, described sand grains footpath is 0.1-5.0mm, the clay content of described sand is 0-10%.

Preferably, described ballast grain sizes are 5-15mm.

Preferably, described ultra-high molecular weight polyethylene particle diameter is 0.1-5.0mm.

Preferably, described t800 fiber diameter is 0.1-5.0mm.

Preferably, described additive is by 38 parts of methacrylic acid, 20 parts of polyethylene polypropylene, hydroxypropyl methyl cellulose 10 Part, 6 parts of silane coupler, 10 parts of jelly powder, 7 parts of hollow glass micropearl, 15 parts of coated with silica titanium dioxide mix.

The invention has the beneficial effects as follows: present invention offer one kind caking property when repairing bridge structure is good, new-old concrete The plain concrete that associativity is good, intensity is not high, easy to crack.

Specific embodiment

With reference to embodiment, the invention will be further described:

A kind of plain concrete, by cement, sand, rubble, flyash, breeze, ultra-high molecular weight polyethylene, t800 fiber, benzene Ethylene-isoprene-styrene block copolymer, water and additive composition, its content groups is divided into:

Cement 30kg, sand 78kg, rubble 125kg, flyash 7.5kg, breeze 9kg, ultra-high molecular weight polyethylene 1.5kg, T800 fiber 1kg, styrene isoprene styrene block copolymer (SIS) 1kg, water 170kg, additive 8kg.

In the present embodiment, described sand grains footpath is 0.1-5.0mm, and the clay content of described sand is 0-10%, described ballast grain sizes For 5-15mm, described ultra-high molecular weight polyethylene particle diameter is 0.1-5.0mm, and described t800 fiber diameter is 0.1-5.0mm, described Additive is by methacrylic acid 3kg, polyethylene polypropylene 20kg, hydroxypropyl methyl cellulose 10kg, silane coupler 6kg, gelatin Powder 10kg, hollow glass micropearl 7kg, coated with silica titanium dioxide kg part mix.

Repair bridge structure when, by damaged surface frosted, and dig uniform hole, after concrete is applied in reparation Place.

The present invention is prepared as follows and obtains:

Step 1, by cement, sand, rubble, flyash, breeze, ultra-high molecular weight polyethylene, t800 fiber, styrene-different Isoprene-styrene block copolymer puts into blender and is uniformly mixing to obtain first chamber；

Step 2, dissolving hydroxypropyl methyl cellulose obtain Gonak；

Step 3, by methacrylic acid, polyethylene polypropylene, silane coupler, jelly powder, hollow glass micropearl, silicon dioxide Cladding titanium dioxide mix homogeneously obtains second chamber；

Step 4, in second chamber described in step 3, add Gonak, mix homogeneously obtains 3rd compositionss；

Step 5, the 3rd compositionss described in step 4 are mixed with first chamber described in step 1 and water；

The preferred embodiment of the present invention described in detail above.It should be appreciated that those of ordinary skill in the art is no Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technology in the art It is available that personnel pass through logical analysis, reasoning, or a limited experiment under this invention's idea on the basis of existing technology Technical scheme, all should be in the protection domain being defined in the patent claims.

Claims

1. a kind of plain concrete it is characterised in that: by cement, sand, rubble, flyash, breeze, ultra-high molecular weight polyethylene, T800 fiber, styrene isoprene styrene block copolymer (SIS), water and additive composition, its content groups is divided into:

30 parts of cement, 78 parts of sand, 125 parts of rubble, 7.5 parts of flyash, 9 parts of breeze, 1.5 parts of ultra-high molecular weight polyethylene, t800 1 part of fiber, 1 part of styrene isoprene styrene block copolymer (SIS), 170 parts of water, 8 parts of additive.

2. a kind of plain concrete as claimed in claim 1, is characterized in that: described sand grains footpath is 0.1-5.0mm, the containing of described sand Mud amount is 0-10%.

3. a kind of plain concrete as claimed in claim 1, is characterized in that: described ballast grain sizes are 5-15mm.

4. a kind of plain concrete as claimed in claim 1, is characterized in that: described ultra-high molecular weight polyethylene particle diameter is 0.1- 5.0mm.

5. a kind of plain concrete as claimed in claim 1, is characterized in that: described t800 fiber diameter is 0.1-5.0mm.

6. a kind of plain concrete as claimed in claim 1, is characterized in that: described additive is by 38 parts of methacrylic acid, poly- second 20 parts of allyl synthetic fibre, 10 parts of hydroxypropyl methyl cellulose, 6 parts of silane coupler, 10 parts of jelly powder, 7 parts of hollow glass micropearl, dioxy 15 parts of SiClx cladding titanium dioxide mixes.