CN105429090A - Reusable tank-spliced-type prefabricated cable duct - Google Patents
Reusable tank-spliced-type prefabricated cable duct Download PDFInfo
- Publication number
- CN105429090A CN105429090A CN201510830596.2A CN201510830596A CN105429090A CN 105429090 A CN105429090 A CN 105429090A CN 201510830596 A CN201510830596 A CN 201510830596A CN 105429090 A CN105429090 A CN 105429090A
- Authority
- CN
- China
- Prior art keywords
- parts
- groove
- spliced
- electric cables
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a reusable tank-spliced-type prefabricated cable duct. The duct comprises an upper tank and a lower tank, wherein upper connection end plates are arranged at both ends of the upper tank in the length direction; lower connection end plates are arranged at both ends of the lower tank in the length direction; upper connection side plates are arranged at both sides of the upper tank in the width direction; lower connection side plates are arranged at both sides of the lower tank in the width direction; the upper tank is provided with a row of upper semicircular grooves in the width direction; the lower tank is provided with a row of lower semicircular grooves in the width direction; and the upper tank and the lower tank are spliced together to form the prefabricated cable duct. According to the reusable tank-spliced-type prefabricated cable duct provided by the present invention, a cable does not need to pass through the duct, so that the workload is greatly reduced; moreover, before laying, sundries also can be visually viewed whether to exist in the duct, so that the duct is convenient to clean; and in the circuit overhauling and recombination process, only the upper and lower tanks need to be separated and the duct can be reused in future, thereby saving resources and protecting the environment.
Description
Technical field
The invention belongs to power construction technology, be specifically related to underground cable rake manifold.
Background technology
Current underground cable rake manifold is mainly based on cast-in-place, i.e. placing porous pipeline after comb channel excavation, finally with concrete casting integrally, inevitably there is certain shortcoming in this mode, Mechanical Equipment at Construction Site is large, heap amplification quantity construction material, concrete-agitatings etc. can produce noise and contaminated environment, add on-site maintenance etc. and can cause great inconvenience to work, particularly return more complicated on traffic main artery and crowded areas case, long construction period can be caused like this, cost is high, the duct length that tradition is placed is longer, to check before using whether tubing damages, and want the foreign material of cleanser conduit inside.
Therefore, the defect of existing underground cable rake manifold can be summarized as: (1) Construction and Maintenance inconvenience.(2) water resistance is poor.(3) can not reuse.(4) efficiency long in time limit is low.
Summary of the invention
Technical problem to be solved by this invention is just to provide one can reuse the spliced pre-fabricated electric cables comb of cell body, convenient construction and maintenance, the reduction of erection time, realizes recycling.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: can reuse the spliced pre-fabricated electric cables comb of cell body, comprise upper groove body and lower groove, described upper groove body and lower groove are by concrete prefabricated shaping, the length two ends of described upper groove body are provided with connection end plate, the length two ends of described lower groove are provided with lower connection end plate, the width both sides of described upper groove body are provided with connection side plate, the width both sides of described lower groove are provided with lower connection side plate, described upper groove body broad ways arranges row's upper half-round slot, described lower groove broad ways arranges second circular groove of a row, described upper groove body and lower groove are spliced to form pre-fabricated electric cables comb, described upper half-round slot and second circular groove split form cable holding pipeline, upper connection side plate in width the same side and the split of lower connection side plate are also fastened by bolts, the connect upper connection end plate of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted, the connect lower connection end plate of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted, the concrete material that described upper groove body and lower groove adopt comprises by mass parts: cement 365 ~ 410 parts, fine active mineral admixture 73 ~ 82 parts, cement-base infiltration crystallization 3 ~ 5 parts, concrete composite synergist 4 ~ 5 parts, accelerator 13 ~ 19 parts, water reducer 4 ~ 5 parts, 900 ~ 925 parts, river sand, haydite 785 ~ 815 parts, 170 ~ 185 parts, water.
Preferably, the upper plane of described lower connection side plate is provided with the seal groove that a sliver transvers section is inverted T shape along its length, and the lower plane of described upper connection side plate is provided with a protuberance be engaged with seal groove along its length.
Preferably, sealing strip is provided with in described seal groove.
Preferably, the end face of described upper connection end plate and lower connection end plate scribbles underwater paint.
Preferably, described fine active mineral admixture is made up of the raw material of following mass parts: 36 ~ 41 parts, pulverized coal ash, slag micropowder 18 ~ 20 parts, metakaolin 19 ~ 21 parts.
Preferably, described concrete composite synergist is CTF composite synergist, and the modulus of fineness of described river sand is greater than 2.5, and in the sand of river, particle diameter is greater than 5mm and the river sand summation that is less than 0.075mm is no more than 20% of river sand gross mass.
Cable duct bank of the present invention is spliced by concrete prefabricated shaping prefabricated upper and lower cell body, cable can directly be positioned on lower groove, cover upper groove body again, do not need by cable through comb, workload reduces greatly, and whether can also there are foreign material in visual comb before laying, be convenient to clean, also only need upper and lower cell body to be separated in circuit maintenance, regrouping process, can also reuse in the future, save resource, protect environment; And the upper and lower cell body of this pre-fabricated electric cables comb is respectively integrated, easy for installation, without the need to carrying out level check and correction, and cable can be separated, can not cause the heat dissipation problem that too much cable is piled up.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the end face structure schematic diagram of cable coil pipe of the present invention;
Fig. 2 is the cross-sectional structure schematic diagram of cable coil pipe of the present invention.
Embodiment
As depicted in figs. 1 and 2, one can reuse the spliced pre-fabricated electric cables comb of cell body, this pre-fabricated electric cables comb comprises the spaced cable holding pipeline of multiple broad ways, comprise upper groove body 1 and lower groove 2, described upper groove body 1 and lower groove 2 are by concrete prefabricated shaping, be embedded with reinforcing bar in upper groove body 1 and lower groove 2, reinforcing bar extends along cable duct bank length direction, arranges along cable duct bank Width.The length two ends of described upper groove body 1 are provided with connection end plate 12, the length two ends of described lower groove 2 are provided with lower connection end plate 22, the width both sides of described upper groove body 1 are provided with connection side plate 13, the width both sides of described lower groove 2 are provided with lower connection side plate 23, described upper groove body 1 broad ways arranges row's upper half-round slot 11, described lower groove 2 broad ways arranges second circular groove 21 of a row, each cable holding pipeline has upper half-round slot 11 and the docking of second circular groove 21 to form, and described upper groove body 1 and lower groove 2 are spliced to form pre-fabricated electric cables comb.Wherein, corresponding upper half-round slot 11 and second circular groove 21 split form cable holding pipeline, upper connection side plate 13 in width the same side and the split of lower connection side plate 23 are also fastened by bolts, the connect upper connection end plate 12 of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted, and the connect lower connection end plate 22 of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted.
Further, in order to realize the effect of water-tight, between upper groove body 1 and lower groove 2, hermetic water-proof structure is provided with.Concrete, the upper plane of described lower connection side plate 23 is provided with the seal groove that a sliver transvers section is inverted T shape along its length, and the lower plane of described upper connection side plate 13 is provided with a protuberance be engaged with seal groove along its length.In seal groove, be provided with sealing strip simultaneously.Upper groove body 1 and lower groove 2 are fixed splicing by the concave-convex clutch of seal groove and protuberance, add that sealing strip plays waterproof action.The end face of described upper connection end plate 12 and lower connection end plate 22 scribbles underwater paint, and underwater paint can completely cut off extraneous water and enter in cable duct bank.
The concrete material that described upper groove body 1 and lower groove 2 adopt comprises by mass parts: cement 365 ~ 410 parts, fine active mineral admixture 73 ~ 82 parts, cement-base infiltration crystallization 3 ~ 5 parts, concrete composite synergist 4 ~ 5 parts, accelerator 13 ~ 19 parts, water reducer 4 ~ 5 parts, 900 ~ 925 parts, river sand, haydite 785 ~ 815 parts, 170 ~ 185 parts, water.
Wherein, fine active mineral admixture is the compound of 36 ~ 41 parts, pulverized coal ash, slag micropowder 18 ~ 20 parts, metakaolin 19 ~ 21 parts.Pulverized coal ash is II level and above pulverized coal ash; Slag micropowder is S95 GBFS; Metakaolin is fine metakaolin.
Concrete composite synergist is CTF composite synergist, and accelerator is 711 type accelerators, and water reducer is poly carboxylic acid series water reducer; River sand is medium coarse sand, and modulus of fineness is greater than 2.5, and screening is greater than 5mm must not more than 20% with the particle being less than 0.075mm.The particle diameter of haydite is between 5mm ~ 10mm.
Mix II level pulverized coal ash, S95 granulated blast-furnace slag; aquation calcium oxide generation chemical reaction in itself and cement, generates the compound with hydraulic gelling property, reduces concrete porosity; improve concrete homogeneity and compactness, enhance concrete structural strength.Mix fine metakaolin, reduce Chloride Diffusion Coefficient in Concrete, improve Concrete Resist Reinforcing Sulfate Corrosion ability, stop the possibility of concrete generation alkali-aggregate reaction, improve concrete durability.Mix cement-base infiltration crystallization material, its distinctive active chemistry infiltrates inside concrete with water, the concrete heat evolution velocity of catalysis, generates hydrated calcium silicate gel body and insoluble crystalline solid, can effectively clog capillary channel and repair crack.Mix CTF composite synergist, hydrone is fully contacted with cement granules, strengthen the indissoluble cement granules in aquation concrete, reduce concrete pore and Zang Shui thereof, reduce the possibility of concrete freeze thawing expansion damage under cryogenic; Meanwhile, because the effective cement granules in unit volume increases to some extent, thus improve the ability of its anti-carbonization.Mix 711 type accelerators, impel concrete rapid hardening hard soon, improve early strength, strengthen the adaptability in wet environment.Mix poly carboxylic acid series water reducer, under the condition keeping concrete flowability, water cement ratio can be reduced significantly.
Embodiment 1, every cubic meter of concrete prefabricated board material quality part is as follows: P.O42.5 cement 365 parts, 36 parts, II level pulverized coal ash, S95 granulated blast-furnace slag 18 parts, metakaolin 19 parts,
l-21 cement-base infiltration crystallization 3 parts, CTF composite synergist 4 parts, 711 type accelerator 13 parts, poly carboxylic acid series water reducer 4 parts, 925 parts, river sand, haydite 815 parts, 172 parts, water.
Embodiment 2, every cubic meter of concrete prefabricated board material quality part is as follows: P.O42.5 cement 385 parts, 39 parts, II level pulverized coal ash, S95 granulated blast-furnace slag 19 parts, metakaolin 20 parts,
l-21 cement-base infiltration crystallization 4 parts, CTF composite synergist 4.5 parts, 711 type accelerator 16 parts, poly carboxylic acid series water reducer 4.5 parts, 915 parts, river sand, haydite 800 parts, 176 parts, water.
Embodiment 3, every cubic meter of concrete prefabricated board material quality part is as follows: P.O42.5 cement 410 parts, 41 parts, II level pulverized coal ash, S95 GBFS 20 parts, metakaolin 21 parts,
l-21 cement-base infiltration crystallization 5 parts, CTF composite synergist 5 parts, 711 type accelerator 19 parts, poly carboxylic acid series water reducer 5 parts, 900 parts, river sand, haydite 785 parts, 182 parts, water.
Further, above-mentioned water reducer can be replaced with a kind of composite additive.Composite additive comprises attapulgite, sepiolite powder, cellulose ether, surfactant and super plasticizer, and the mass percent of each component is as follows:
Attapulgite also known as palygorskite, be a kind of tool chain layer structure containing Shuifu County's magnesium silicate clay mineral.Its structure belongs to 2:1 type clay mineral, in each 2:1 unit structure layer, tetrahedron wafer angle is pushed up direction at a certain distance and is put upside down, form layer chain, there is cation interchangeability, water absorption, suspension and thixotropy, be applied in composite additive and greatly can increase denseness, anti-segregation and delamination resistance.Sepiolite powder be a kind of tool layer chain structure containing Shuifu County's magnesium silicate clay mineral, shrinkage is low, and plasticity is good, and specific surface is large, and adsorptivity is strong.Sepiolite powder can absorb a lot of water thus become softness when running into water, solid carbon dioxide can be strengthened, and once dry just hardening, very large benefit is had to intensity increase, because sepiolite powder shrinkage is low, plasticity is good, and attapulgite possesses the effect increasing denseness, both complement each other, attapulgite and sepiolite powder are silicate mineral simultaneously, molecular structure is similar, possesses good compatibility, stir after mixing evenly, and these two kinds of mineral have larger reserves in China, draw materials simple, less expensive, there is high economic benefit.Preferably, described attapulgite apparent density is 1860kg/m3, and specific area is 450m2/g, and described sepiolite powder density is 1800kg/m3, and fineness is 200 order-320 orders, and its advantage is, both density difference are little, and during mixing, compatibility is better.
Described cellulose ether is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, the viscosity of described cellulose ether is 40000mPa.s-200000mPa.s, cellulose then can be water-soluble after etherificate, dilute alkaline soln and organic solvent, and there is thermoplasticity, hydroxypropyl methyl cellulose ether possesses good water-retaining property, ethoxyl methyl cellulose ether, it is non-ionic celluloses ether, and be not polyeletrolyte, therefore when slaine or organic bath exist, more stable in aqueous, and attapulgite and sepiolite powder are containing Shuifu County's magnesium silicate in the present embodiment, so meet this condition, after being uniformly mixed, stability is better.Described cellulose ether can be also the mixture of both hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, and the water-retaining property that hydroxypropyl methyl cellulose ether is good can promote ethoxyl methyl cellulose ether stability in aqueous.
Described surfactant is the one in lauryl sodium sulfate, sodium lignin sulfonate and calcium lignosulfonate, and lauryl sodium sulfate is often used as anionic surfactant, emulsifying agent and blowing agent; Sodium lignin sulfonate is also anionic surfactant, has very strong dispersibility, is suitable for solid dispersal in aqueous medium; Calcium lignosulfonate, a kind of many component high-molecular polymers anion surfactant, its good stability, also good dispersibility is possessed, used time also has both the effect of water reducer, certain surfactant can be the mixture of in the middle of this three any two kinds, also can be the mixture that three mixes mutually, can play three kinds of effects of foaming, dispersion, water reducer.
Described super plasticizer is naphthalene water reducer, one in melamine water reducing agent and high-efficiency water-reducing agent of poly-carboxylic acid, three is water reducer, melamine water reducing agent is more outstanding gains in strength, high-efficiency water-reducing agent of poly-carboxylic acid be continue wooden calcium be the ordinary water-reducing agent of representative and the third generation high-performance water reducing agent that grows up after being the high efficiency water reducing agent of representative with naphthalene, it is collection diminishing, guarantor is collapsed, strengthen, the serial water reducer with premium properties such as anti-shrinkage and environmental protection, volume is low, water-reducing rate is high, when volume is about 1.0%, water-reducing rate is more than 35%, so super plasticizer can be the mixture of in the middle of this three any two kinds, also can be the mixture that three mixes mutually, high-efficiency water-reducing agent of poly-carboxylic acid can with naphthalene water reducer, melamine water reducing agent cooperation uses, can not only control cost, and water-reducing effect is obvious, and the water-retaining property of attapulgite own and sepiolite powder is just relatively good, coordinate these three kinds of super plasticizer water-reducing effects better.
As preferably, each component ratio can limit as follows:
The specific embodiment of composite additive is exemplified below:
Wherein, cellulose ether selects the ethoxyl methyl cellulose ether of 75000mPa.s, and super plasticizer selects high-efficiency water-reducing agent of poly-carboxylic acid, becomes 5 groups, i.e. 5 embodiments by the different mass percent proportioning of component, the percent mass such as table 1 of the component of 5 embodiments:
Table 1
The spliced pre-fabricated electric cables comb of the present embodiment, adopt precast concrete assembling technique, cable can directly be positioned over lower groove and cover upper groove body again, and do not need by cable through comb, workload reduces greatly, and whether can also there are foreign material in visual comb before laying, be convenient to clean, also only need two pieces of substrates to be separated in circuit maintenance, regrouping process, can also reuse in the future, save resource, protect environment; On this pre-fabricated electric cables comb, lower groove is respectively integrated, easy for installation, and without the need to carrying out level check and correction, and cable can be separated, can not cause the heat dissipation problem that too much cable is piled up.
Claims (6)
1. can reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: comprise upper groove body and lower groove, described upper groove body and lower groove are by concrete prefabricated shaping, the length two ends of described upper groove body are provided with connection end plate, the length two ends of described lower groove are provided with lower connection end plate, the width both sides of described upper groove body are provided with connection side plate, the width both sides of described lower groove are provided with lower connection side plate, described upper groove body broad ways arranges row's upper half-round slot, described lower groove broad ways arranges second circular groove of a row, described upper groove body and lower groove are spliced to form pre-fabricated electric cables comb, described upper half-round slot and second circular groove split form cable holding pipeline, upper connection side plate in width the same side and the split of lower connection side plate are also fastened by bolts, the connect upper connection end plate of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted, the connect lower connection end plate of end of adjacent two sections of pre-fabricated electric cables combs is superimposed and be bolted, the concrete material that described upper groove body and lower groove adopt comprises by mass parts: cement 365 ~ 410 parts, fine active mineral admixture 73 ~ 82 parts, cement-base infiltration crystallization 3 ~ 5 parts, concrete composite synergist 4 ~ 5 parts, accelerator 13 ~ 19 parts, water reducer 4 ~ 5 parts, 900 ~ 925 parts, river sand, haydite 785 ~ 815 parts, 170 ~ 185 parts, water.
2. according to claim 1ly reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: the upper plane of described lower connection side plate is provided with the seal groove that a sliver transvers section is inverted T shape along its length, the lower plane of described upper connection side plate is provided with a protuberance be engaged with seal groove along its length.
3. according to claim 2ly reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: in described seal groove, be provided with sealing strip.
4. according to claim 1ly reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: the end face of described upper connection end plate and lower connection end plate scribbles underwater paint.
5. according to claim 1ly reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: described fine active mineral admixture is made up of the raw material of following mass parts: 36 ~ 41 parts, pulverized coal ash, slag micropowder 18 ~ 20 parts, metakaolin 19 ~ 21 parts.
6. according to claim 1ly reuse the spliced pre-fabricated electric cables comb of cell body, it is characterized in that: described concrete composite synergist is CTF composite synergist, the modulus of fineness of described river sand is greater than 2.5, and in the sand of river, particle diameter is greater than 5mm and the river sand summation that is less than 0.075mm is no more than 20% of river sand gross mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830596.2A CN105429090A (en) | 2015-11-25 | 2015-11-25 | Reusable tank-spliced-type prefabricated cable duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830596.2A CN105429090A (en) | 2015-11-25 | 2015-11-25 | Reusable tank-spliced-type prefabricated cable duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105429090A true CN105429090A (en) | 2016-03-23 |
Family
ID=55507108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830596.2A Pending CN105429090A (en) | 2015-11-25 | 2015-11-25 | Reusable tank-spliced-type prefabricated cable duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071513A (en) * | 2020-09-23 | 2020-12-11 | 赵玄 | Wire device is used in wire and cable processing production convenient to change and use |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002303380A (en) * | 1995-08-08 | 2002-10-18 | Furukawa Electric Co Ltd:The | Underground buried conduit |
| CN101114762A (en) * | 2006-07-24 | 2008-01-30 | 上海新能凯博实业有限公司 | Prefabricated four holes cable bank-pipe |
| US20110095140A1 (en) * | 2009-10-23 | 2011-04-28 | Armit Cedric Brian Anthony | Piping system |
| CN202076736U (en) * | 2011-03-18 | 2011-12-14 | 王贵宾 | Novel cable protective pipe |
| CN202474775U (en) * | 2012-03-28 | 2012-10-03 | 齐齐哈尔电业局 | Split type cable duct bank |
| CN104410031A (en) * | 2014-12-10 | 2015-03-11 | 黄贺明 | Prefabricated cable duct bank |
| CN105064543A (en) * | 2015-09-09 | 2015-11-18 | 歌山建设集团有限公司 | Formwork-free constructional column and construction method |
-
2015
- 2015-11-25 CN CN201510830596.2A patent/CN105429090A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002303380A (en) * | 1995-08-08 | 2002-10-18 | Furukawa Electric Co Ltd:The | Underground buried conduit |
| CN101114762A (en) * | 2006-07-24 | 2008-01-30 | 上海新能凯博实业有限公司 | Prefabricated four holes cable bank-pipe |
| US20110095140A1 (en) * | 2009-10-23 | 2011-04-28 | Armit Cedric Brian Anthony | Piping system |
| CN202076736U (en) * | 2011-03-18 | 2011-12-14 | 王贵宾 | Novel cable protective pipe |
| CN202474775U (en) * | 2012-03-28 | 2012-10-03 | 齐齐哈尔电业局 | Split type cable duct bank |
| CN104410031A (en) * | 2014-12-10 | 2015-03-11 | 黄贺明 | Prefabricated cable duct bank |
| CN105064543A (en) * | 2015-09-09 | 2015-11-18 | 歌山建设集团有限公司 | Formwork-free constructional column and construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071513A (en) * | 2020-09-23 | 2020-12-11 | 赵玄 | Wire device is used in wire and cable processing production convenient to change and use |
| CN112071513B (en) * | 2020-09-23 | 2022-03-29 | 无锡市中鼎电工机械有限公司 | Wire device is used in wire and cable processing production convenient to change and use |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101602589B (en) | Preformed material for post-tensioned prestressing pipeline vacuum grouting or mudjacking and preparation method thereof | |
| CN102276224B (en) | Marine engineering self-compacting high-performance concrete and preparation method thereof | |
| CN103979901B (en) | A kind of cement based shrinking-free grouting material and using method being mixed with phosphorus slag powder | |
| CN102603235B (en) | Carbon nano-tube cement-based waterproof material and preparation method thereof | |
| CN102092984B (en) | Energy-saving environmental-protection thickener for mortar preblending and dry-mixing | |
| CN102838323B (en) | High-performance concrete gel material for tunnel and application thereof | |
| CN104003681A (en) | Offshore wind power duct rack grouting material and construction method thereof | |
| CN104177015B (en) | Non-burning brick and the natural curing preparation method that lake, a kind of river dredging bed mud is major ingredient | |
| CN103086668A (en) | Design method for mixing ratio of C60-grade pumping self-compacting steel tube recycled concrete | |
| CN101698589A (en) | Novel patching material | |
| CN103626454A (en) | Manufacturing method of fast-setting early-strength two-fluid injecting paste material | |
| CN100398482C (en) | Underground pipe heat exchanger drilling hole refilling material | |
| CN102875053B (en) | construction method of compound type powder waterproof agent | |
| CN108069665A (en) | A kind of graphene concrete and its preparation process | |
| CN103864357A (en) | Premixed recycled concrete and preparation method thereof | |
| KR20240064607A (en) | Construction drone, unmanned airplane | |
| CN100453497C (en) | Backfill to buried pipe heat exchanger through hole | |
| CN101805161A (en) | Baking-free brick cementing agent prepared from drilling solid waste | |
| CN105622023A (en) | Silt curing agent using furnace slags | |
| CN104211340A (en) | Building block ready-mixed mortar and production method thereof | |
| CN103864381A (en) | Cement-based inorganic anchor adhesive and preparation method thereof | |
| CN103193405A (en) | Silicon mortar material as well as preparation and applications thereof | |
| CN103408266A (en) | Design method for mixing ratio of C40-grade pumping self-compacting steel tube recycled concrete | |
| CN108640610A (en) | A kind of underwater self-compaction concrete and its construction method | |
| CN100395209C (en) | Underground pipe heat exchanger hole drilling refilling material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |
|
| RJ01 | Rejection of invention patent application after publication |