CN107382215A - A kind of preparation method of high dense concrete road - Google Patents
A kind of preparation method of high dense concrete road Download PDFInfo
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- CN107382215A CN107382215A CN201710760338.0A CN201710760338A CN107382215A CN 107382215 A CN107382215 A CN 107382215A CN 201710760338 A CN201710760338 A CN 201710760338A CN 107382215 A CN107382215 A CN 107382215A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
It is as made from following steps the invention discloses a kind of preparation method of high dense concrete road：Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；Materials A is mixed with coarse aggregate uniformly, obtains material B；Water is added slowly in material B, adds and continues to stir after the completion of water, obtain material C；Cement, flyash, slag micropowder and modified steel scoria are added in material C, stirs, obtains compound；Compound is evenly laid out on roadbed, extrusion forming, overlay film maintenance, obtain high dense concrete road.The present invention is in low water-cement ratio（0.09‑0.14）Under the conditions of, without using water reducer, you can realize uniform mix, high dense concrete road is made.The concrete road consistency height of this method preparation, porosity are low, significantly improve the performance of concrete road, lower construction cost.
Description
Technical field
The invention belongs to building material field, and in particular to a kind of preparation method of high dense concrete road.
Background technology
Concrete is by the binder materials such as cement, granular aggregat（Also referred to as aggregate）Prepared according to a certain percentage with water,
A kind of structural material formed through uniform stirring, closely knit shaping, maintenance hardening.Concrete is because with superior plasticity, good
Water-resistance, the series of advantages such as the economy of excellent durability and great competitiveness and as current whole world dosage most
Big and most wide use range material.It still would is that one of most important structural timber within the decades in future, especially
It is for the contemporary China in the transitional period, and because the scale of capital construction surpasses the world average level, the importance of concrete is not
Say and explain.
Under the background built a resource-conserving and environment-friendly society, concrete industry certainly will be to low-carbon, green
Direction is developed.Existing concrete road pipeline material initial water gray scale is higher, causes that concrete pore rate is higher, consistency is relatively low,
CO2Easily penetrating into inside concrete causes hydrolysis product of cement Ca (OH)2It is converted into CaCO3, cause solid volume to shrink, and then
Cause concrete cracking.Meanwhile the higher initial ratio of mud can cause concrete to occur surface excreting water phenomenon in forming process,
Cause concrete cracking, easily cause concrete surface to peel off under load action.In addition, existing concrete road pipeline material by
It is higher in its initial ratio of mud, shrinkage joint must be reserved during construction, pointing filling is recycled after concrete volume stable
Shrinkage joint, this not only extends construction period, also improves construction costs, and concrete road pipeline material is under load action, pole
Easily occur seam at reserved shrinkage joint position and squeeze broken problem, the serious curtailment active time of concrete road.
For problem above, existing technological means is using high efficiency water reducing agent, reduces concrete mixing water consumption, and then
The initial ratio of mud is reduced, even if using high efficiency water reducing agent, the initial ratio of mud of concrete is still more than 0.2, is far longer than cement
Aquation water requirement, above mentioned problem are still present, and the use of high efficiency water reducing agent greatly increases construction cost.
The content of the invention
Under the conditions of a kind of low water-cement ratio, without using the height of water reducer
The preparation method of dense concrete road, the concrete road consistency height of this method preparation, porosity are low.
The purpose of the present invention is achieved by the following technical solution：
A kind of preparation method of high dense concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
First organic water-absorbing resin is mixed with fine aggregate, then is mixed with coarse aggregate, organic water-absorbing resin can be uniformly dispersed in
In aggregate.
3）Water is added slowly in material B, stirring while adding, it is 5-10min to add the water time, adds and continues to stir after the completion of water
5min, obtain material C；
Water is added in material B, water is fully absorbed by organic water-absorbing resin, and makes organic water-absorbing resin uniform adhesion in aggregate table
Face.
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 8-12min is stirred, obtains compound；
In the step, due to the reduction of ambient humidity, the water that organic water-absorbing resin absorbs gradually discharges, and aquation occurs for cement
Reaction, causes alkaline environment, and the hydroxypropyl methyl cellulose ether in organic water-absorbing resin starts to hydrolyze, and the water absorbed is a large amount of
Release, realizes the uniform mixing of each component under the conditions of low water-cement ratio；Redispersible latex powder early stage can prevent hydroxypropyl methyl
Cellulose ether is reunited, and promotes its dispersed, and the later stage can prevent the group of cement, flyash, slag micropowder and modified steel scoria
It is poly-, make binder materials uniform adhesion in aggregate surface.
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 2-5MPa, overlay film conserves 3-7 days, obtains high cause
Close concrete road.
The tightly packed of material can be achieved in extrusion forming, and then improves its consistency.
Described, high dense concrete road is as made from the raw material of following parts by weight：Coarse aggregate 1000-1100 parts,
Fine aggregate 600-700 parts, organic water-absorbing resin 0.9-1.2 parts, cement 380-420 parts, flyash 190-230 parts, slag micropowder
80-120 parts, modified steel scoria 70-100 parts, water 75-100 parts.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, modified steel scoria is that after adding the processing of modifying agent grinding, it is 1- to cross 500 mesh sieve margins through overheating vexed, magnetic separation
4% obtains.
Described, modifying agent is by 3 by stearic acid, ethylene glycol, triethanolamine and graphene oxide：1-2：1-1.5：
Made from 0.01-0.05 weight ratio.
In the present invention, stearic acid can be chemically bonded with the functional group on slag surface, make slag produce fault of construction,
Distortion of lattice and decrystallized phenomenon, significantly improve the activity index of slag；Ethylene glycol, triethanolamine and graphene oxide are in grinding
During can reduce the surface energy of steel slag particle, make it easier to grinding into fine particle；Further, modifying agent is in cement water
Hydrated cementitious can be promoted during change, excite activity of steel slag, improve the early strength of material.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Beneficial effects of the present invention：The present invention is in low water-cement ratio（0.09-0.14）Under the conditions of, without using water reducer, i.e.,
Uniform mix can be achieved, high dense concrete road is made.The concrete road consistency height of this method preparation, porosity are low,
The performance of concrete road is significantly improved, lowers construction cost.
Embodiment
With reference to embodiment, the present invention will be further described.
The coarse aggregate of the present invention is natural limestone rubble, and grain composition meets 5-31.5mm specified in JGJ52-2006
The requirement of rubble continuous grading.
The cement of the present invention is 42.5 portland cements.
The flyash of the present invention is Class F fly ash, its fineness（45 μm of square hole screens tail over）No more than 10%, loss on ignition is little
In 3%, sulfur trioxide content is not more than 1%, and free calcium oxide content is not more than 0.5%.
Embodiment 1
A kind of preparation method of high dense concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 5min to add the water time, adds and continues after the completion of water to stir 5min, obtains
Material C；
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 12min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 2MPa, overlay film conserves 7 days, obtains high dense concrete
Road.
Described, high dense concrete road is as made from the raw material of following parts by weight：1000 parts of coarse aggregate, fine aggregate
700 parts, 0.9 part of organic water-absorbing resin, 380 parts of cement, 230 parts of flyash, 80 parts of slag micropowder, 100 parts of modified steel scoria, water 75
Part.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, modified steel scoria is that after adding the processing of modifying agent grinding, it is 1- to cross 500 mesh sieve margins through overheating vexed, magnetic separation
4% obtains.
Described, modifying agent is by 3 by stearic acid, ethylene glycol, triethanolamine and graphene oxide：1：1.5：0.01 weight
Made from amount ratio.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Embodiment 2
A kind of preparation method of high dense concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 8min to add the water time, adds and continues after the completion of water to stir 5min, obtains
Material C；
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 10min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 3MPa, overlay film conserves 5 days, obtains high dense concrete
Road.
Described, high dense concrete road is as made from the raw material of following parts by weight：1050 parts of coarse aggregate, fine aggregate
650 parts, 1.1 parts of organic water-absorbing resin, 400 parts of cement, 210 parts of flyash, 100 parts of slag micropowder, 85 parts of modified steel scoria, water 90
Part.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, modified steel scoria is that after adding the processing of modifying agent grinding, it is 1- to cross 500 mesh sieve margins through overheating vexed, magnetic separation
4% obtains.
Described, modifying agent is by 3 by stearic acid, ethylene glycol, triethanolamine and graphene oxide：1.5：1.3：0.03
Made from weight ratio.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Embodiment 3
A kind of preparation method of high dense concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 10min to add the water time, adds and continues after the completion of water to stir 5min,
Obtain material C；
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 8min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 5MPa, overlay film conserves 3 days, obtains high dense concrete
Road.
Described, high dense concrete road is as made from the raw material of following parts by weight：1100 parts of coarse aggregate, fine aggregate
600 parts, 1.2 parts of organic water-absorbing resin, 420 parts of cement, 190 parts of flyash, 120 parts of slag micropowder, 70 parts of modified steel scoria, water
100 parts.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, modified steel scoria is that after adding the processing of modifying agent grinding, it is 1- to cross 500 mesh sieve margins through overheating vexed, magnetic separation
4% obtains.
Described, modifying agent is by 3 by stearic acid, ethylene glycol, triethanolamine and graphene oxide：2：1：0.05 weight
Than obtained.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Comparative example 1
A kind of preparation method of concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 8min to add the water time, adds and continues after the completion of water to stir 5min, obtains
Material C；
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 10min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 3MPa, overlay film conserves 5 days, obtains high dense concrete
Road.
1）Coarse aggregate, fine aggregate, naphthalene system powder water reducer and water are well mixed to obtain materials A；
2）Materials A is well mixed to obtain compound with organic water-absorbing resin, cement, flyash, slag micropowder, modified steel scoria；
3）Compound is evenly laid out on roadbed, and vibrate shaping and smooth out surface, and overlay film conserves 5 days, obtains concrete road.
Described, high dense concrete road is as made from the raw material of following parts by weight：1050 parts of coarse aggregate, fine aggregate
650 parts, 1.1 parts of organic water-absorbing resin, 400 parts of cement, 210 parts of flyash, 100 parts of slag micropowder, 85 parts of modified steel scoria, naphthalene system
7 parts of powder water reducer, 310 parts of water.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, modified steel scoria is that after adding the processing of modifying agent grinding, it is 1- to cross 500 mesh sieve margins through overheating vexed, magnetic separation
4% obtains.
Described, modifying agent is by 3 by stearic acid, ethylene glycol, triethanolamine and graphene oxide：1.5：1.3：0.03
Made from weight ratio.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Comparative example 2
A kind of preparation method of high dense concrete road, is as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 8min to add the water time, adds and continues after the completion of water to stir 5min, obtains
Material C；
4）Cement, flyash, slag micropowder and slag are added in material C, 10min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 3MPa, overlay film conserves 5 days, obtains high dense concrete
Road.
Described, high dense concrete road is as made from the raw material of following parts by weight：1050 parts of coarse aggregate, fine aggregate
650 parts, 1.1 parts of organic water-absorbing resin, 400 parts of cement, 210 parts of flyash, 100 parts of slag micropowder, 85 parts of slag, 90 parts of water.
Described, organic water-absorbing resin is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:1
Made from weight ratio.
Described, slag is through overheating vexed, magnetic separation, and after grinding processing, it is what 1-4% was obtained to cross 500 mesh sieve margins.
Described, the specific surface area of slag micropowder is more than 410m2/ kg, activity index is not less than 97 within 7 days, and water content is little
In 0.6%, sulfur trioxide content is not more than 2.1%, and loss on ignition is not more than 1.5%.
Described, fine aggregate is Machine-made Sand or river sand, and its modulus of fineness is 2.6-3.2；The coarse aggregate is natural stone
Lime stone rubble, clay content are no more than 1.5%, and crush index is no more than 15%.
Described, the thickness of high dense concrete road is 15-30cm.
Performance test
With reference to GB/T50081-2016《Normal concrete mechanical test method》、GB/T50082-2009《Normal concrete
Long-term behaviour and durability test method》The method of standard is carried out to concrete road prepared by embodiment 1-3 and comparative example 1-2
Performance test, as a result as shown in table 1.
The performance test results of table 1
Although embodiment of the present invention is disclosed as above, it is not restricted to listed fortune in specification and embodiment
With it can be applied to various suitable the field of the invention completely, can be easily real for those skilled in the art
Now other modification, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited to
Specific details.
Claims (8)
1. a kind of preparation method of high dense concrete road, it is characterised in that be as made from following steps：
1）Organic water-absorbing resin is well mixed with fine aggregate, obtains materials A；
2）Materials A is mixed with coarse aggregate uniformly, obtains material B；
3）Water is added slowly in material B, stirring while adding, it is 5-10min to add the water time, adds and continues to stir after the completion of water
5min, obtain material C；
4）Cement, flyash, slag micropowder and modified steel scoria are added in material C, 8-12min is stirred, obtains compound；
5）Compound is evenly laid out on roadbed, it is press-formed under the conditions of 2-5MPa, overlay film conserves 3-7 days, obtains high fine and close mixed
Solidifying dirt road road.
2. the preparation method of high dense concrete road according to claim 1, it is characterised in that the high dense concrete
Road is as made from the raw material of following parts by weight：Coarse aggregate 1000-1100 parts, fine aggregate 600-700 parts, organic water-absorbing resin
0.9-1.2 parts, cement 380-420 parts, flyash 190-230 parts, slag micropowder 80-120 parts, modified steel scoria 70-100 parts, water
75-100 parts.
3. the preparation method of high dense concrete road according to claim 2, it is characterised in that organic water-absorbing resin
It is according to 4 by hydroxypropyl methyl cellulose ether and redispersible latex powder:Made from 1 weight ratio.
4. the preparation method of high dense concrete road according to claim 2, it is characterised in that the modified steel scoria is warp
Vexed, magnetic separation is overheated, after adding the processing of modifying agent grinding, it is what 1-4% was obtained to cross 500 mesh sieve margins.
5. the preparation method of high dense concrete road according to claim 4, it is characterised in that the modifying agent is by hard
Resin acid, ethylene glycol, triethanolamine and graphene oxide press 3：1-2：1-1.5：Made from 0.01-0.05 weight ratio.
6. the preparation method of high dense concrete road according to claim 2, it is characterised in that the ratio of the slag micropowder
Surface area is more than 410m2/ kg, 7 days activity indexs are not less than 97, and water content is not more than 0.6%, and sulfur trioxide content is not more than
2.1%, loss on ignition is not more than 1.5%.
7. the preparation method of high dense concrete road according to claim 2, it is characterised in that the fine aggregate is mechanism
Sand or river sand, its modulus of fineness are 2.6-3.2；The coarse aggregate is natural limestone rubble, and clay content is no more than 1.5%, pressure
Broken index is no more than 15%.
8. the preparation method of high dense concrete road according to claim 1, it is characterised in that the high dense concrete
The thickness of road is 15-30cm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053083A (en) * | 2018-09-26 | 2018-12-21 | 济南大学 | A kind of impervious mortar of high compact |
| CN109279846A (en) * | 2018-09-25 | 2019-01-29 | 济南大学 | A kind of high-impermeable concrete and preparation method thereof |
| CN109970405A (en) * | 2019-05-08 | 2019-07-05 | 温州市三箭混凝土有限公司 | A kind of concrete and preparation method thereof |
| CN112663898A (en) * | 2020-12-25 | 2021-04-16 | 北京金隅混凝土有限公司 | Wear-resistant concrete ground construction process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584139A (en) * | 2012-01-18 | 2012-07-18 | 中国铁道科学研究院金属及化学研究所 | Self-densifying concrete as well as preparation method and application thereof |
-
2017
- 2017-08-30 CN CN201710760338.0A patent/CN107382215B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584139A (en) * | 2012-01-18 | 2012-07-18 | 中国铁道科学研究院金属及化学研究所 | Self-densifying concrete as well as preparation method and application thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279846A (en) * | 2018-09-25 | 2019-01-29 | 济南大学 | A kind of high-impermeable concrete and preparation method thereof |
| CN109279846B (en) * | 2018-09-25 | 2021-02-09 | 济南大学 | High-impermeability concrete and preparation method thereof |
| CN109053083A (en) * | 2018-09-26 | 2018-12-21 | 济南大学 | A kind of impervious mortar of high compact |
| CN109053083B (en) * | 2018-09-26 | 2020-07-28 | 济南大学 | High-compactness anti-permeability mortar |
| CN109970405A (en) * | 2019-05-08 | 2019-07-05 | 温州市三箭混凝土有限公司 | A kind of concrete and preparation method thereof |
| CN112663898A (en) * | 2020-12-25 | 2021-04-16 | 北京金隅混凝土有限公司 | Wear-resistant concrete ground construction process |
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| Publication number | Publication date |
|---|---|
| CN107382215B (en) | 2020-03-13 |
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