CN101100845A - Composite protection structure for channel - Google Patents
Composite protection structure for channel Download PDFInfo
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- CN101100845A CN101100845A CNA2007100624965A CN200710062496A CN101100845A CN 101100845 A CN101100845 A CN 101100845A CN A2007100624965 A CNA2007100624965 A CN A2007100624965A CN 200710062496 A CN200710062496 A CN 200710062496A CN 101100845 A CN101100845 A CN 101100845A
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Abstract
A ditch protection structure includes a bottom anti-leaking layer of clay or film, a middle layer of sand and gravel, a top layer of modified concrete of multi holes. The modified concrete contents in weight of 200-500 lot cement, 1000-1800 lot gravel of particle size of 5-80mm, 100-180 lot water and modify agent in a content of 2%-30% of water. The structure could be paved by paving machine for large area and is of low shrink index, anti-break under low temperature and stable under high temperature, good impact and wear resistance.
Description
Technical field:
The present invention relates to a kind of composite protection structure for channel.
Background technology:
Many-sided function such as the city rivers and canals are undertaking diversion, retaining, view, control flood and drain flooded fields, protection is had higher requirement, and main means of defence has clay protection, cement-soil protection, building stones protection, buries shop formula coating materials protection, bituminous concrete protection, cement concrete protection etc. at present.In order to reach the many-sided functional requirement of city rivers and canals; satisfy the requirement of antiseepage, antifreeze, durability and sight again; present safeguard structure generally adopts the combined type safeguard structure; promptly generally adopt impervious barriers such as clay, coating materials overcoat in lower floor; it mainly is antiseepage; materials such as gravel soil are adopted in the middle level, and the upper strata is adopted and paved building stones, prefabricated section, cast-in-site asphalt concrete or cement concrete and keep the stable of safeguard structure, reach protection impervious barrier, protecting against shock, freeze proof purpose.There is the problem of three aspects in this combined type safeguard structure, and the one, adopt cast-in-site or build by laying bricks or stones, speed of application is slow, can not pave on a large scale; The 2nd, waterproof for common fluid concrete, airtight, be unfavorable for ecological exchange; The 3rd, anti-freezing property is poor, and coefficient is big because present bituminous concrete and ordinary concrete temperature contract, and damages in the easy freeze thawing of northern China, reduces application life.
Summary of the invention:
Coefficient is little, freeze proof, the composite protection structure for channel of construction simple and fast to the object of the present invention is to provide a kind of macrovoid, temperature to contract.
Technical scheme of the present invention is: composite protection structure for channel lower floor is clay or coating materials impervious barrier, the middle level is the gravel soil overcoat, the upper strata is a porous portland cement concrete deck, the component of porous portland cement concrete by weight: 200～500 parts of cement, particle diameter be 5～80mm etc. 1000～1800 parts of particle diameter rubbles, 100～180 parts in water and cement modifier be water umber 2%～30%.
As a kind of improvement project of the present invention be: the component of honeycombed cement concrete by weight: 300～450 parts of cement, particle diameter be 10～60mm etc. 1400～1700 parts of particle diameter rubbles, 100～150 parts in water and cement modifier be water umber 5%～20%.
As another kind of improvement project of the present invention be: the component of honeycombed cement concrete by weight: 350～400 parts of cement, particle diameter be 10～40mm etc. 1500～1600 parts of particle diameter rubbles, 115～130 parts in water and cement modifier be water umber 10%～15%.
As another improvement project of the present invention be: described cement modifier is an acrylic compounds--the polyocarboxy acid type cement modifier.
The particle diameter rubble that waits that the present invention is used can be hard rubbles such as limestone, granite, basalt, andesite, and acrylic compounds-polyocarboxy acid type cement modifier can buy from the market, also can adopt other similar cement modifier.
Job practices: can be at clay, cement-soil, antiseepage film, direct making porous portland cement concrete above the gravel soil, the porous modified cement concrete mixed material that mixes is poured in the hopper of paver, by paver leveling voluntarily, to vibrate, vibrate, pave be moulding, need not to roll again.Should in time cover health after the making moulding, article such as available film geotextiles, the piece of sack cover health, can remove the health overburden after 4 days.
Progress of the present invention is embodied in:
1, the present invention adopts the asphalt paver moulding, can the large tracts of land paving operation, and construction is simple, accelerating construction progress under the similarity condition, is compared with the ordinary concrete cast-in-site significantly, speed can improve more than 5 times, with build the concrete piece by laying bricks or stones, building stones are compared, and improve manyly.
2, utilize the vibration compacting function of ironing plate of asphalt spreader, make the skeleton in the concrete form good stone-stone contact structures, the cement paste on the contact surface plays good cementation, forms the enough intensity that needs, have shock resistance preferably, abrasion resistance, good endurance.
3, because this structure forms is the macrovoid cage construction of stone-stone contact, porosity reaches 15-40%, has good low-temperature cracking resistance, high-temperature stable, and the temperature coefficient that contracts is low, and retractility only is equivalent to 1/200 of ordinary concrete.
4, owing to added cement modifier, porous portland cement concrete overcoat of the present invention is not hydrophilic, does not produce frost heave, good frost resistance, Stability Analysis of Structures, long service life.
5, owing to be the macrovoid modified concrete, permeable, good permeability helps ecological exchange, good environmental protection; In the phytal zone, from the hole of building stones, can grow pasture and water, help purifying water.
In a word, the present invention is a kind of desirable persistence rivers and canals protection rock-steady structure layer, in accelerating construction progress, can greatly prolong the application life of rivers and canals safeguard structure, improves the economic and social benefits.
The specific embodiment:
Composite protection structure for channel lower floor is clay or coating materials impervious barrier, and the middle level is the gravel soil overcoat, and the upper strata is a porous portland cement concrete deck, can adopt on below clay of paver, cement-soil, antiseepage film, the gravel soil directly to pave.
Embodiment 1
The material component of porous portland cement concrete is by weight: 500 kilograms of cement; Particle diameter be 45mm wait 1800 kilograms of particle diameter rubbles; 24 kilograms of 160 kilograms in water and cement modifiers, uniform mixing can adopt paver directly to pave on the clay of bottom, cement-soil, antiseepage film, gravel soil layer.Compressive strength is 38.2MPa, rupture strength 6.3MPa, porosity 17.1%.
Embodiment 2
The material component of porous portland cement concrete is by weight: 200 kilograms of cement; Particle diameter be 5mm wait 1400 kilograms of particle diameter rubbles; The water double centner; 5 kilograms of cement modifiers.Compressive strength is 3.5MPa, rupture strength 1.3MPa, porosity 35%.
Embodiment 3
The material component of porous portland cement concrete is by weight: 300 kilograms of cement; Particle diameter be 20mm wait 1500 kilograms of particle diameter rubbles; 115 kilograms in water; 17.25 kilograms of cement modifiers.Compressive strength is 14.3MPa, rupture strength 2.7MPa, porosity 28.2%.
Embodiment 4
The material component of porous portland cement concrete is by weight: 400 kilograms of cement; Particle diameter be 20mm wait 1600 kilograms of particle diameter rubbles; 120 kilograms in water; Cement modifier is 24 kilograms.Compressive strength is 27.2MPa, rupture strength 4.5MPa, porosity 21.2%.
Embodiment 5
The material component of porous portland cement concrete is by weight: 500 kilograms of cement; Particle diameter be 50mm wait 1700 kilograms of particle diameter rubbles; 160 kilograms in water; Cement modifier is 16 kilograms.Compressive strength is 36.2MPa, rupture strength 6.0MPa, porosity 15.5%.
Embodiment 6
The material component of porous portland cement concrete is by weight: 480 kilograms of cement; Particle diameter be 70mm wait 1000 kilograms of particle diameter rubbles; 150 kilograms in water; Cement modifier is 15 kilograms.Compressive strength is 27.2MPa, rupture strength 3.6MPa, porosity 18.5%.
Claims (4)
1, a kind of composite protection structure for channel, comprise upper, middle and lower-ranking, lower floor is clay or coating materials impervious barrier, the middle level is the gravel soil overcoat, it is characterized in that: the upper strata is a porous portland cement concrete deck, the component of honeycombed cement concrete by weight: 200～500 parts of cement, particle diameter be 5～80mm etc. 1000～1800 parts of particle diameter rubbles, 100～180 parts in water and cement modifier be water umber 2%～30%.
2, composite protection structure for channel according to claim 1 is characterized in that: the component of honeycombed cement concrete by weight: 300～450 parts of cement, particle diameter be 10～60mm etc. 1400～1700 parts of particle diameter rubbles, 100～150 parts in water and cement modifier be water umber 5%～20%.
3, composite protection structure for channel according to claim 1 is characterized in that: the component of honeycombed cement concrete by weight: 350～400 parts of cement, particle diameter be 10～40mm etc. 1500～1600 parts of particle diameter rubbles, 115～130 parts in water and cement modifier be water umber 10%～15%.
4, according to claim 1,2 or 3 described composite protection structure for channel, it is characterized in that: described cement modifier is acrylic compounds-polyocarboxy acid type cement modifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100624965A CN101100845A (en) | 2007-07-30 | 2007-07-30 | Composite protection structure for channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100624965A CN101100845A (en) | 2007-07-30 | 2007-07-30 | Composite protection structure for channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101100845A true CN101100845A (en) | 2008-01-09 |
Family
ID=39035281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100624965A Pending CN101100845A (en) | 2007-07-30 | 2007-07-30 | Composite protection structure for channel |
Country Status (1)
| Country | Link |
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| CN (1) | CN101100845A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392515B (en) * | 2008-11-11 | 2010-06-02 | 武汉理工大学 | Channel thermal insulation structure and construction method thereof |
| CN102359113A (en) * | 2011-07-20 | 2012-02-22 | 上海嘉洁环保工程有限公司 | Integrally-cast cement pervious concrete ecological protection slope and construction method thereof |
| CN105541153A (en) * | 2015-12-20 | 2016-05-04 | 甘肃省建材科研设计院 | Hydrophobic particle and impermeable breathable structure |
| CN108343033A (en) * | 2018-03-21 | 2018-07-31 | 刘红广 | A kind of water seepage prevention method in hydraulic engineering |
-
2007
- 2007-07-30 CN CNA2007100624965A patent/CN101100845A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392515B (en) * | 2008-11-11 | 2010-06-02 | 武汉理工大学 | Channel thermal insulation structure and construction method thereof |
| CN102359113A (en) * | 2011-07-20 | 2012-02-22 | 上海嘉洁环保工程有限公司 | Integrally-cast cement pervious concrete ecological protection slope and construction method thereof |
| CN105541153A (en) * | 2015-12-20 | 2016-05-04 | 甘肃省建材科研设计院 | Hydrophobic particle and impermeable breathable structure |
| CN108343033A (en) * | 2018-03-21 | 2018-07-31 | 刘红广 | A kind of water seepage prevention method in hydraulic engineering |
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