CN105198307A - Drainage ditch and preparation method thereof - Google Patents
Drainage ditch and preparation method thereof Download PDFInfo
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- CN105198307A CN105198307A CN201410295878.2A CN201410295878A CN105198307A CN 105198307 A CN105198307 A CN 105198307A CN 201410295878 A CN201410295878 A CN 201410295878A CN 105198307 A CN105198307 A CN 105198307A
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Abstract
The invention discloses a drainage ditch and a preparation method thereof. The preparation method is characterized in that fluidal ultra-high performance inorganic dust concrete is adopted for pouring, wherein the fluidal ultra-high performance inorganic dust concrete comprises the following raw material components in parts by weight: 500-650 parts of low-alkaline silicate cement or common silicate cement, 85-120 parts of silica fume, 115-145 parts of class II fly ash, 175-215 parts of slag powder, 1050-1250 parts of river sand, 26-32 parts of an efficient water reducer, 130-145 parts of water and 100-140 parts of direct copper plating steel fiber. The drainage ditch provided by the invention is attractive in appearance, high in compressive and bending strength, light in weight, and 1/3-1/6 of the weight of a common concrete masonry ditch or concrete pouring ditch; besides, the design of an overall semi-elliptical structure is adopted, the lateral pressure-carrying capacity is high, the hydraulic pressure difference is large, the water velocity is high and deposition is not easy to produce at the bottom of the ditch groove.
Description
Technical field
The present invention relates to a kind of road surface, the collection of ground liquids and drain facility, particularly relate to a kind of waterways and preparation method thereof.
Background technology
Conveniently draining, road needs to arrange waterways on both sides of the road usually, common waterways is formed by concrete placement, leakage board is set above, this waterways adopts U-lag body or rectangular parallelepiped cell body mostly, its raw material materials and weight all larger, being on the one hand raw material self reason, is that structure causes on the one hand.
Application number be 200910060802.0 Chinese patent " a kind of low cost active powder concrete and preparation method thereof " disclose a kind of RPC, the silicate cement, steel-making slag powder, flyash, silicon ash, high efficiency water reducing agent, river sand, mixing water and the steel fiber that are 0.52 ~ 0.58: 0.16 ~ 0.18: 0.10 ~ 0.16: 0.13 ~ 0.16: 0.012 ~ 0.018: 0.9 ~ 1.1: 0.14 ~ 0.18: 0.156 ~ 0.234 by mass ratio obtain.This patent adds slag as a kind of mineral admixture, at the early stage the resistance of concrete to chloride ion penetration of concrete lower than straight cement concrete, the resistance of concrete to chloride ion penetration in later stage is higher than straight cement concrete, but when identical volume, the performance of slag is not as good as flyash and slag, in addition, in slag, a small amount of CaO exists in a free form, and f-CaO aquation generates Ca (OH)
2, volume increases 1.98 times, causes steel slag stability bad.
Application number be 200810019337.1 Chinese patent " slag mixed active powder concrete " disclose a kind of slag mixed active powder concrete, the part by weight of the relative silicate cement of its each component is: silicate cement: 1; Slag: 0.40 ~ 0.60; Silica flour: 0.20 ~ 0.35; Silica powder: 0.20 ~ 0.35; River sand: 1.20 ~ 1.60; Water: 0.20 ~ 0.28; Water reducer: 0.02 ~ 0.03.The shortcomings such as disclosed in this patent, RPC has pumpability difference, and impermeability is poor, impact resistance difference.
Application number is that the Chinese patent " resin concrete drainage ditch " of 200920030725.X discloses a kind of resin concrete drainage ditch, comprise channel-shaped housing, the leakage board be arranged on housing poured into a mould by resin concrete, the outside surface of housing is round and smooth excessive arc, and arc-shaped outer surface is provided with protruding stiffening web.The load side pressure of this patent own carries by distortion, and side direction thin plate, for being embedded on shaft of rib, easily produces lateral deformation, fracture by earthing pressure, and long-term following temperature rising change resin is easily aging, self brittle failure.
Application number be 201220655940.0 Chinese patent " prefabricated waterways " disclose a kind of prefabricated waterways, be made up of groove body and cover plate, described groove body is rectangle, the front end of described groove body is provided with groove, the rear end of described groove body is for inserting the rear end of the groove body described in another joint for inserting the tenon of the described groove of the groove body described in another joint, and described cover plate covers on described groove body.This patent is convenient to dismounting, but firmness is not enough.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of heavy and light matter, high-strength, easy construction and apparent waterways attractive in appearance and preparation method thereof are provided.
Above-mentioned purpose of the present invention is achieved by following technical solution:
A kind of waterways, adopt the concrete placement of fluidised form very-high performance inorganic powder, described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 500 ~ 650 parts;
The silicon ash of median size 0.18 μm, SiO2 content >=85% 85 ~ 120 parts;
115 ~ 145 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 175 ~ 215 parts of median size 10 ~ 30 μm;
1050 ~ 1250 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 26 ~ 32 parts that water-reducing rate is greater than 30%;
130 ~ 145 parts, water;
The copper plated steel fiber 100 ~ 140 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
Preferably, described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 575 parts;
The silicon ash 105 parts of median size 0.18 μm, SiO2 content >=85%;
130 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 195 parts of median size 10 ~ 30 μm;
1150 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 29 parts that water-reducing rate is greater than 30%;
136 parts, water;
The copper plated steel fiber 120 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
By adopting slag and flyash to replace cement, reduce the glutinous poly-property of proportioning low, make its Self-leveling performance good, divergence is large, and air content is low, and economic cost performance is high, meets and exempts from vibratory compaction demand.
Further, described waterways comprises ditch body and base plate, described ditch body is half elliptic groove, base is provided with bottom described ditch body, described ditch body upper end is provided with groove, be provided with multiple stiffening web between described ditch body two side, the sidewall of described ditch body is provided with the first interface be engaged with the sidewall of adjacent ditch body, and described base plate is provided with the second interface be engaged with adjacent bottom plates.Described ditch body is level and smooth half elliptic groove, contribute to collection and the discharge of rainwater, and saving material, described groove is cover plate preparation, described stiffening web can strengthen intensity of the present invention, the present invention adopts the mode of splicing, by the seamless link of the sidewall of ditch body ditch body adjacent with another with the ingehious design of base plate.
Further, described first interface is that the two side of ditch body is respectively equipped with recess and protuberance, and described recess is engaged with the protuberance of the sidewall of adjacent ditch body, and described protuberance is engaged with the recess of the sidewall of adjacent ditch body.Described second interface is that base plate both sides are provided with recess and protuberance, and described second recess is engaged with the protuberance of adjacent bottom plates, and described protuberance is engaged with the recess of adjacent bottom plates.
Further, be equidistant between described adjacent said rib.Described ditch body is provided with multiple embedded nut.The present invention is lifted by crane by lifting eye bolt.
Described ditch body and base plate are equipped with has the steel mesh protective layer that thickness is 10 ~ 15mm, and described steel mesh protective layer is many crisscross compositions of steel bar.Described steel mesh protective layer can strengthen the horizontal and vertical intensity of the present invention.
The preparation method in described waterways, comprises the steps:
S1. the copper plated steel fiber limited by formula and river sand add stirrer stirring and are uniformly dispersed for 2 ~ 3 minutes;
S2. in stirrer, add low alkali portland cement that formula limits or ordinary Portland cement, silicon ash and slag powders again continue stirring 1 ~ 2 minute to evenly;
S3. in the material of S2 gained, adding high efficiency water reducing agent and water successively continuing stirring 3 ~ 4 minutes to being uniformly dispersed, obtain fluidised form very-high performance inorganic powder concrete;
Described water is according to actual slump 26cm ~ 30cm, and divergence is that 60cm ~ 70cm suitably finely tunes;
S4. by the concrete prepared by S3 by the even cloth of distribution device in the waterways mould having steel mesh framework, steel mesh protective layer 8 ~ 15mm, the slight vibration of passing through of going forward side by side is smooth; bottom surface press polish; enter natural curing 12 ~ 14 hours, then enter infrared high-temperature maintenance, temperature is 90
+5 DEG C, constant temperature 12 hours.
Compared with prior art, the present invention has following beneficial effect:
(1) have employed fluidised form very-high performance inorganic powder concrete, thickness is 1/3 ~ 1/5 of traditional product, significantly alleviate weight, improve the mechanical index performance of product and durability performance, its ultimate compression strength can reach 110 ~ 150 MPas, folding strength 14 ~ 20 MPa, has the features such as corrosion-resistant, life cycle management is good;
(2) product is realized by assembling process, adds the handiness of site operation, significantly alleviates construction labour intensity, reduces the complex management degree of working-yard; Principle is simple, installation processing ease, can solve construction process difficult quality fast and effectively and control, by difficult problems such as weather effect construction speeds;
(3) reduce on-the-spot labor management and environmental pollution, increase construction speed fast, reduce and comprehensively make;
(4) adopt half elliptic cell body, it is good that entirety bears earth lateral pressure, is convenient to catchment and draining, water flow pressure difference is strengthened, and flowing water speed is accelerated, and bottom can not produce sediment, remove follow-up desilting work, be particularly suitable for the branch line draining that run by gravity discharge is little;
(4) be provided with steel mesh protective layer and stiffening web, strengthen high-strength durable of the present invention;
figure of description
Fig. 1 is vertical view of the present invention;
Fig. 2 is Figure 1A-A sectional view; Wherein, 1, ditch body; 3, base; 4, groove; 10, embedded nut;
Fig. 3 is Figure 1B-B sectional view; Wherein, the 6, first recess; 7, the first protuberance; 8, the second recess; 9, the second protuberance; 10, embedded nut; 11, the 3rd recess; 12, the 3rd protuberance;
Fig. 4 is the front view of invention; Wherein, 5, stiffening web;
Fig. 5 is the left view of invention; Wherein, the 6, first recess; 7, the first protuberance; 11, the 3rd recess;
Fig. 6 is the right view of invention; Wherein, the 8, second recess; 9, the second protuberance; 12, the 3rd protuberance;
Fig. 7 is the upward view of invention.
Embodiment
Below in conjunction with Figure of description and specific embodiment the present invention made and elaborating further, but embodiment does not limit in any form the present invention.
Embodiment 1
As shown in Fig. 1,2 and 4, described waterways comprises ditch body 1 and base plate (not marking in figure), described ditch body is half elliptic groove, base 3 is provided with bottom described ditch body, described ditch body upper end is provided with groove 4, be provided with multiple stiffening web 5 between described ditch body 1 two side, the sidewall of described ditch body 1 is provided with the first interface be engaged with the sidewall of adjacent ditch body, and described base plate is provided with the second interface be engaged with adjacent bottom plates.Described ditch body is provided with multiple embedded nut 10.The present invention is lifted by crane by lifting eye bolt.
As shown in Fig. 3,5 and 6, described first interface is that the two side of ditch body is respectively equipped with the first recess 6, first protuberance 7, second recess 8 and the second protuberance 9, described first recess 6 is engaged with the second protuberance 9 of the sidewall of adjacent ditch body, and described first protuberance 7 is engaged with the second recess 8 of the sidewall of adjacent ditch body.Described second interface is that base plate both sides are provided with the 3rd recess 11 and the 3rd protuberance 12, and described 3rd recess 11 is engaged with the 3rd protuberance 12 of adjacent bottom plates.
As illustrated in figures 4 and 7, be equidistant between described adjacent said rib 5.Described ditch body is provided with multiple embedded nut.The present invention is lifted by crane by lifting eye bolt.
Described ditch body 1 and base plate are equipped with has the steel mesh protective layer that thickness is 10 ~ 15mm, and described steel mesh protective layer is many crisscross compositions of steel bar.
Described waterways adopts the concrete placement of fluidised form very-high performance inorganic powder, and described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm 575 parts;
The silicon ash 105 parts of median size 0.18 μm, SiO2 content >=85%;
130 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 195 parts of median size 10 ~ 30 μm;
1150 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 29 parts that water-reducing rate is greater than 30%;
136 parts, water;
The copper plated steel fiber 120 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
The preparation method in described waterways, comprises the steps:
S1. the copper plated steel fiber limited by formula and river sand add stirrer stirring and are uniformly dispersed for 2 ~ 3 minutes;
S2. in stirrer, add low alkali portland cement that formula limits or ordinary Portland cement, silicon ash and slag powders again continue stirring 1 ~ 2 minute to evenly;
S3.. in the material of S2 gained, adding high efficiency water reducing agent and water successively continuing stirring 3 ~ 4 minutes to being uniformly dispersed, obtain fluidised form very-high performance inorganic powder concrete;
Described water is according to actual slump 26cm ~ 30cm, and divergence is that 60cm ~ 70cm suitably finely tunes;
S4. by the concrete prepared by S3 by the even cloth of distribution device in the waterways mould having steel mesh framework, steel mesh protective layer 8 ~ 15mm, the slight vibration of passing through of going forward side by side is smooth; bottom surface press polish; enter natural curing 12 ~ 14 hours, then enter infrared high-temperature maintenance, temperature is 90
+5 DEG C, constant temperature 12 hours;
Described steel mesh protective layer is many crisscross compositions of steel bar.
Embodiment 2
Except the weight part difference of the described each feed composition of fluidised form very-high performance inorganic powder concrete, other conditions are with embodiment 1;
Described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 500 parts;
The silicon ash 85 parts of median size 0.18 μm, SiO2 content >=85%;
115 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 175 parts of median size 10 ~ 30 μm;
1050 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 26 parts that water-reducing rate is greater than 30%;
130 parts, water;
The copper plated steel fiber 100 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
Embodiment 3
Except the weight part difference of the described each feed composition of fluidised form very-high performance inorganic powder concrete, other conditions are with embodiment 1;
Described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 650 parts;
The silicon ash 120 parts of median size 0.18 μm, SiO2 content >=85%;
145 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 215 parts of median size 10 ~ 30 μm;
1250 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 32 parts that water-reducing rate is greater than 30%;
145 parts, water;
The copper plated steel fiber 140 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
Comparative example 1
Except described concrete is normal concrete, other conditions are with embodiment 1;
Described normal concrete comprises each feed composition of following weight parts composition:
Normal silicate 42.5 cement 300 parts;
River sand, grain composition is medium sand 750 parts;
1250 parts, 5 ~ 15 millimeters of stones;
180 parts, water;
The high efficiency water reducing agent 5 parts that water-reducing rate is greater than 20%;
Comparative example 2
Except saving except silicon ash in described ultra-high performance concrete feed composition, other conditions are with embodiment 1;
Comparative example 3
Except saving except flyash in described ultra-high performance concrete feed composition, other conditions are with embodiment 1;
Comparative example 4
Except saving except slag powders in described ultra-high performance concrete feed composition, other conditions are with embodiment 1;
Comparative example 5
Except in described ultra-high performance concrete silicon ash, flyash different with the weight part of slag powders except, other conditions are with embodiment 1;
In described ultra-high performance concrete, the weight part of silicon ash, flyash and slag powders is as follows:
Silicon ash 84 parts
114 parts, flyash
Slag powders 174 parts;
Comparative example 6
Except in described ultra-high performance concrete silicon ash, flyash different with the weight part of slag powders except, other conditions are with embodiment 1;
In described ultra-high performance concrete, the weight part of silicon ash, flyash and slag powders is as follows:
Silicon ash 121 parts
146 parts, flyash
Slag powders 216 parts;
The wide * of the long * of 2000MM*600MM*750MM(is dark) waterways prepares the prefabricated drainage tray of gained according to embodiment 1 ~ 3 and comparative example 1 ~ 6, and its performance is as table one:
| Sidewall thickness (cm) | Deadweight (kg) | Pressure detection KN | |
| Embodiment 1 | 4 | 200 | 24 |
| Embodiment 2 | 3 | 172 | 18 |
| Embodiment 3 | 5 | 255 | 26 |
| Comparative example 1 | 20 | 1310 | 16 |
| Comparative example 2 | 4 | 210 | 16 |
| Comparative example 3 | 4 | 205 | 21 (surperficial honeycombs, coarse) |
| Comparative example 4 | 4 | 200 | 21(surface holes is many, smooth) |
| Comparative example 5 | 4 | 200 | 19 |
| Comparative example 6 | 4 | 200 | 24 |
Contrast by comparative example 1 and embodiment 1 ~ 3, find out that the deadweight in prefabricated waterways of the present invention is significantly less than the waterways of employing normal concrete intuitively, in bearing capacity, be also better than common concrete material; By the contrast of comparative example 2 ~ 4 with embodiment 1, in deadweight, bearing capacity, obvious embodiment 1 is more excellent, and waterways surface holes prepared by comparative example 3,4 is many, from data, combination and the proportioning of silicon ash, flyash and slag powders can make best performance of the present invention; Although comparative example 5 in bearing capacity on more bigger than embodiment 2, but comprehensive deadweight and thickness known embodiment 2 more excellent, and each data presentation is all not so good as embodiment 1,3, although comparative example 6 is suitable with embodiment 1 indices, higher on cost, and embodiment 2, the data presentation of 3 is more excellent, and visible the present invention fills a prescription numerical range optimum.
Claims (9)
1. a waterways, adopt the concrete placement of fluidised form very-high performance inorganic powder, described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 500 ~ 650 parts;
The silicon ash of median size 0.18 μm, SiO2 content >=85% 85 ~ 120 parts;
115 ~ 145 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 175 ~ 215 parts of median size 10 ~ 30 μm;
1050 ~ 1250 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 26 ~ 32 parts that water-reducing rate is greater than 30%;
130 ~ 145 parts, water;
The copper plated steel fiber 100 ~ 140 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
2. a kind of waterways according to claim 1, is characterized in that, described fluidised form very-high performance inorganic powder concrete comprises each feed composition of following weight parts composition:
The low alkali portland cement of median size 30 ~ 60 μm or ordinary Portland cement 575 parts;
The silicon ash 105 parts of median size 0.18 μm, SiO2 content >=85%;
130 parts, II grade of flyash of median size 20 ~ 40 μm;
The above slag powders of S95 level 195 parts of median size 10 ~ 30 μm;
1150 parts, the river sand that particle diameter is 0.16 ~ 4.75mm, silt content is less than 0.5%;
The high efficiency water reducing agent 29 parts that water-reducing rate is greater than 30%;
136 parts, water;
The copper plated steel fiber 120 parts that diameter is 0.18 ~ 0.25mm, length is 10 ~ 15mm.
3. a kind of waterways according to claim 1, it is characterized in that, comprise ditch body and base plate, described ditch body is half elliptic groove, be provided with base bottom described ditch body, described ditch body upper end is provided with groove, is provided with multiple stiffening web between described ditch body two side, the sidewall of described ditch body is provided with the first interface be engaged with the sidewall of adjacent ditch body, and described base plate is provided with the second interface be engaged with adjacent bottom plates.
4. a kind of waterways according to claim 3, it is characterized in that, described first interface is that the two side of ditch body is respectively equipped with recess and protuberance, and described recess is engaged with the protuberance of the sidewall of adjacent ditch body, and described protuberance is engaged with the recess of the sidewall of adjacent ditch body.
5. a kind of waterways according to claim 3, it is characterized in that, described second interface is that base plate both sides are provided with recess and protuberance, and described recess is engaged with the protuberance of adjacent bottom plates, and described protuberance is engaged with the recess of adjacent bottom plates.
6. a kind of waterways according to claim 3, it is characterized in that, be equidistant between described adjacent said rib.
7. a kind of waterways according to claim 3, it is characterized in that, described ditch body and base plate are equipped with has the steel mesh protective layer that thickness is 10 ~ 15mm, and described steel mesh protective layer is many crisscross compositions of steel bar.
8. a kind of waterways according to claim 3, it is characterized in that, described ditch body is provided with multiple embedded nut.
9. the preparation method in waterways according to claim 1 ~ 8 Arbitrary Term, is characterized in that, comprise the steps:
S1. the copper plated steel fiber limited by formula and river sand add stirrer stirring and are uniformly dispersed for 2 ~ 3 minutes;
S2. in stirrer, add low alkali portland cement that formula limits or ordinary Portland cement, silicon ash and slag powders again continue stirring 1 ~ 2 minute to evenly;
S3. in the material of S2 gained, adding high efficiency water reducing agent and water successively continuing stirring 3 ~ 4 minutes to being uniformly dispersed, obtain fluidised form very-high performance inorganic powder concrete;
Described water is according to actual slump 26cm ~ 30cm, and divergence is that 60cm ~ 70cm suitably finely tunes;
S4. by the concrete prepared by S3 by the even cloth of distribution device in the waterways mould having steel mesh framework, steel mesh protective layer 8 ~ 15mm, the slight vibration of passing through of going forward side by side is smooth; bottom surface press polish; enter natural curing 12 ~ 14 hours, then enter infrared high-temperature maintenance, temperature is 90
+5 DEG C, constant temperature 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295878.2A CN105198307A (en) | 2014-06-27 | 2014-06-27 | Drainage ditch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295878.2A CN105198307A (en) | 2014-06-27 | 2014-06-27 | Drainage ditch and preparation method thereof |
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| CN105198307A true CN105198307A (en) | 2015-12-30 |
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ID=54946335
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|---|---|---|---|
| CN201410295878.2A Pending CN105198307A (en) | 2014-06-27 | 2014-06-27 | Drainage ditch and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648912U (en) * | 2010-04-26 | 2010-11-24 | 吴泽宏 | Prefabricated water drainage system groove |
| CN103224355A (en) * | 2013-02-07 | 2013-07-31 | 黄贺明 | Green environmentally-friendly concrete interlocking block brick |
| CN103822025A (en) * | 2014-01-21 | 2014-05-28 | 黄贺明 | Ultrahigh-performance concrete line-up cable support and preparation method thereof |
-
2014
- 2014-06-27 CN CN201410295878.2A patent/CN105198307A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648912U (en) * | 2010-04-26 | 2010-11-24 | 吴泽宏 | Prefabricated water drainage system groove |
| CN103224355A (en) * | 2013-02-07 | 2013-07-31 | 黄贺明 | Green environmentally-friendly concrete interlocking block brick |
| CN103822025A (en) * | 2014-01-21 | 2014-05-28 | 黄贺明 | Ultrahigh-performance concrete line-up cable support and preparation method thereof |
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Application publication date: 20151230 |