CN113200720A - Low-cost concrete material special for flood fighting, disaster relief and emergency rescue and preparation method thereof - Google Patents
Low-cost concrete material special for flood fighting, disaster relief and emergency rescue and preparation method thereof Download PDFInfo
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- CN113200720A CN113200720A CN202110527085.9A CN202110527085A CN113200720A CN 113200720 A CN113200720 A CN 113200720A CN 202110527085 A CN202110527085 A CN 202110527085A CN 113200720 A CN113200720 A CN 113200720A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
Abstract
The invention discloses a low-cost concrete material special for flood control, disaster relief and emergency rescue and a preparation method thereof, belonging to the technical field of flood control and disaster relief materials, and comprising a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following materials in parts; the cement content is 400-600 parts, the machine-made sand content is 550-700 parts, and the fine stone content is 200-400 parts. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue and the preparation method thereof have the advantages that the concrete material is directly used without being packaged again, the operation is convenient and simple in flood fighting, the time consumption is short, the precious time can be won for flood fighting, the outer package is specially designed, the use process is more convenient, the concrete material has a certain cost advantage, the concrete material can be quickly finally solidified in a short time, the concrete material has the function of quick reinforcement, and the solidification time can be adjusted according to the requirements of users.
Description
Technical Field
The invention relates to the technical field of flood-fighting and disaster-relief materials, in particular to a low-cost concrete material special for flood-fighting and disaster-relief and a preparation method thereof.
Background
Since the current year enters the major flood season, the rainfall in the Yangtze river basin changes from less to more, and the rainfall also has the characteristics of frequent occurrence, high intensity, long duration and high overlapping degree of rain areas in the process. Since 6 months and 1 day, the Yangtze river basin has 9 obvious rainfall processes in total, basically has no intermission, and directly causes the Yangtze river basin to flood over the policeman, has more rivers and has wide distribution range. The total 226 stations are flooded with over-warning, involving 143 river streams, with 171 stations at over-warning level, 29 stations at over-guaranteed level, and 26 stations at over-historical level. The amplitude of the fluctuation of at least 11 meters is generally met by 9 meters. Local areas such as the lake and lake areas in the Yangtze lake and the tailwater level have been in excess of 1998. Due to the influence of natural disasters of flood, local water and soil loss, mountain body floating and landslide, debris flow, rice field submerging, house crossing and scouring, dam bursting and the like are caused, and huge loss is brought to the life safety and property of people. The natural flood disaster is a natural phenomenon, at present, people have no effective and feasible method for completely solving the natural flood disaster, and people can only prevent the natural flood disaster in advance and fight against flood in the occurrence process. In order to guarantee life safety of people and reduce property loss, on the premise of the background condition, the special concrete material for flood fighting is researched and developed, and is mainly used for rapid reinforcement of landslide and dam burst, collapse, rapid first-aid repair of roads and the like, the flood fighting and rescue is most efficient, the time for partial rescue is required to be saved, woven bags, sand, stones, cement, geotextile and other rescue and rescue substances are required to be prepared in the flood fighting and rescue process, the preparation process is complicated, the delay time is delayed, and the rescue substances used at present are dispersed and cannot be combined comprehensively and effectively, and the aims of rapid reinforcement for some dangerous situations are fulfilled, and the reinforcement effect and the effect of standing a picture are not achieved.
Disclosure of Invention
The invention aims to provide a low-cost concrete material special for flood fighting, disaster relief and emergency rescue and a preparation method thereof, the concrete material is directly used without being packaged again, the concrete material is convenient and simple to operate and short in time consumption in flood fighting and emergency rescue, precious time can be won for flood fighting and emergency rescue, the outer package is specially designed, the concrete material is more convenient and faster in use process and has certain cost advantage, and the concrete material is quickly solidified when meeting water, is quick in strength increase, is quick and final solidified in short time and has a quick reinforcing effect, and the solidification time can be adjusted according to the requirements of users, so that the problems in the background technology are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a component A, a component B and a component C, wherein the component A comprises 400-600 parts of ordinary portland cement, 550-700 parts of machine-made sand and 200-400 parts of fine stone according to the following components in parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 20-40 parts, and the content of calcium oxide is 10-30 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5-10 parts, and the content of the mixing water is 20-30 parts.
Further, the raw material A is prepared from the following materials in parts; the content of the ordinary Portland cement is 400-700 parts, the content of the machine-made sand is 560-720 parts, and the content of the fine stone is 230-400 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 21-42 parts, and the content of calcium oxide is 12-32 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 6-12 parts, and the content of the mixing water is 21-32 parts.
Further, the group A raw materials, the group B raw materials and the group C raw materials are mixed according to the following parts; the raw material A is prepared from the following materials in parts; 380-600 parts of ordinary portland cement, 520-700 parts of machine-made sand and 300-420 parts of fine stone; the component B comprises the following raw materials in parts: the content of sodium aluminate is 18-46 parts, and the content of calcium oxide is 8-36 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 3-15 parts, and the content of the mixing water is 17-41 parts.
Further, the raw material A is prepared from the following materials in parts; the content of the ordinary Portland cement is 400-680 parts, the content of the machine-made sand is 550-730 parts, and the content of the fine stone is 200-480 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 20-46 parts, and the content of calcium oxide is 10-39 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5-17 parts, and the content of the mixing water is 20-36 parts.
Further, the cement in the group A raw materials comprises 41 percent of tricalcium silicate, 29 percent of dicalcium silicate, 3 percent of tricalcium aluminate, 15 percent of tetracalcium aluminoferrite and 12 percent of gypsum.
Furthermore, other materials do not need to be added in the process of mixing and stirring the raw materials of the component A and the raw materials of the component B at the temperature of 1-130 ℃.
The invention provides another technical scheme: a preparation method of a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises the following steps:
s1: pretreatment of sand: the method comprises the following steps of (1) conveying sand back to a raw material from a sand yard, then drying, screening and storing, firstly ensuring that the sand in a material component is in a dry state, so that the sand is not solidified in the storage process, classifying particle groups with wider sand particle size range according to particle size by using a screening device, enabling the sand quality to meet the specified particle size distribution requirement, storing the dried and screened sand in a sealed tank body, and avoiding the sand from contacting with moisture in the air, so that the material is convenient to prepare;
s2: material preparation and weighing: the industrial automatic weighing, batching and metering device is utilized, a metering system guides raw materials in a storage bin into a metering bin under the matching of a metering screw, the raw materials are metered through data feedback of a metering scale sensor, the raw materials can be continuously conveyed, the raw materials are accurately metered and automatically batched according to the dosage of a mixing proportion, the accurate proportioning of various materials is realized, the working efficiency is improved in a production link, and a large amount of labor force is saved;
s3: mixing and stirring: the measured materials are guided into a main elevator through a screw conveyor and are lifted into a material mixing bin at the upper part of the mixing machine, when a pneumatic big door of the material mixing bin is opened, the materials to be mixed are quickly and accurately put into a gravity-free stirring machine, and the materials are mixed and stirred for continuous production, so that the materials are uniformly mixed, and the stable quality is ensured;
s4: packaging: the finished product which is uniformly stirred in the mixing stirrer is quickly placed into a finished product bin for buffering and storage through a pneumatic quick opening door, the finished product bin and the packaging machine are packaged, metered and packaged through a soft link, and when a large requirement is met on the product or the sales volume, a belt conveyor can be added in the rear process of the packaging machine to directly convey the finished product to a finished product area or a transport vehicle;
s5: designing a finished product packaging bag: the packaging bag is divided into an inner layer and an outer layer, the inner layer packaging bag adopts a micropore design, so that the packaging bag has the effects of ventilation and water permeation, the aim of timely reinforcing in flood fighting, disaster relief and emergency rescue is mainly fulfilled conveniently, and the outer layer packaging bag adopts a sealing design, so that the packaging bag has the functions of water resistance and moisture resistance, and the product does not generate a solidification effect in the storage process.
Further, in relation to S3, the high-strength material is reinforced after being transported to a construction site by a transport vehicle.
Compared with the prior art, the invention has the beneficial effects that:
according to the low-cost concrete material special for flood fighting, disaster relief and emergency rescue and the preparation method thereof, the materials are integrated through processing, the concrete material can be carried at one time, the labor cost can be greatly saved, the emergency rescue time can be shortened by 3 times, the whole concrete material can be directly used without being packaged again, the operation is convenient and simple in flood fighting, the time consumption is short, the precious time can be won for the flood fighting, the outer package is specially designed, the use process is more convenient, the concrete material has certain cost advantage, the concrete material can be quickly solidified when meeting water, the strength is quickly increased, the concrete material can be quickly finally solidified in a short time, the concrete material has a quick reinforcing effect, and the solidification time can be adjusted according to the requirements of users.
Drawings
FIG. 1 is a flow chart of the preparation of the low-cost concrete material special for flood fighting, disaster relief and emergency rescue.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; 450 portions of ordinary Portland cement, 580 portions of machine-made sand and 300 portions of fine stone; the component B comprises the following raw materials in parts: the content of sodium aluminate is 30 parts, and the content of calcium oxide is 20 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5 parts, and the content of the mixing water is 25 parts.
Example two:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; 500 parts of ordinary portland cement, 602 parts of machine-made sand and 360 parts of fine stone; the component B comprises the following raw materials in parts: the content of sodium aluminate is 35 parts, and the content of calcium oxide is 25 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 6 parts, and the content of the mixing water is 21 parts.
Example three:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; 490 portions of ordinary Portland cement, 620 portions of machine-made sand and 390 portions of fine stone; the component B comprises the following raw materials in parts: 23 parts of sodium aluminate and 19 parts of calcium oxide; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 8 parts, and the content of the mixing water is 23 parts.
Example four:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; 520 parts of ordinary portland cement, 650 parts of machine-made sand and 360 parts of quartz sand; the component B comprises the following raw materials in parts: 32 parts of sodium aluminate and 15 parts of calcium oxide; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 8 parts, and the content of the mixing water is 25 parts.
Example five:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; the content of ordinary Portland cement is 400 parts, the content of machine-made sand is 550 parts, and the content of fine stone is 200 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 20 parts, and the content of calcium oxide is 10 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5 parts, and the content of the mixing water is 20 parts.
Example six:
a low-cost concrete material special for flood fighting, disaster relief and emergency rescue comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following raw materials in parts; 600 parts of ordinary portland cement, 700 parts of machine-made sand and 400 parts of fine stone; the component B comprises the following raw materials in parts: the content of sodium aluminate is 40 parts, and the content of calcium oxide is 30 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 10 parts, and the content of the mixing water is 30 parts.
In order to better show the preparation process of the low-cost concrete material special for flood fighting, disaster relief and emergency rescue, the embodiment provides a preparation method of the low-cost concrete material special for flood fighting, disaster relief and emergency rescue, which includes the following steps:
s1: pretreatment of sand: the method comprises the following steps of (1) conveying sand back to a raw material from a sand yard, then drying, screening and storing, firstly ensuring that the sand in a material component is in a dry state, so that the sand is not solidified in the storage process, classifying particle groups with wider sand particle size range according to particle size by using a screening device, enabling the sand quality to meet the specified particle size distribution requirement, storing the dried and screened sand in a sealed tank body, and avoiding the sand from contacting with moisture in the air, so that the material is convenient to prepare;
s2: material preparation and weighing: by utilizing an industrial automatic weighing and batching metering device, a metering system guides raw materials in a stock bin into a metering bin under the matching of a metering screw, the raw materials are metered by data feedback of a metering scale sensor, the raw materials can be continuously conveyed, and the raw materials are accurately metered and automatically batched according to the dosage of a mixing ratio;
s3: mixing and stirring: the measured materials are guided into a main elevator through a screw conveyor and are lifted into a material mixing bin at the upper part of the mixing machine, when a pneumatic big door of the material mixing bin is opened, the materials to be mixed are quickly and accurately put into a gravity-free stirring machine, and the materials are mixed and stirred for continuous production, so that the materials are uniformly mixed, and the stable quality is ensured;
s4: packaging: the finished product which is uniformly stirred in the mixing stirrer is quickly placed into a finished product bin for buffering and storage through a pneumatic quick opening door, the finished product bin and the packaging machine are packaged, metered and packaged through a soft link, and when a large requirement is met on the product or the sales volume, a belt conveyor can be added in the rear process of the packaging machine to directly convey the finished product to a finished product area or a transport vehicle;
s5: designing a finished product packaging bag: the packaging bag is divided into an inner layer and an outer layer, the inner layer packaging bag adopts a micropore design, so that the packaging bag has the effects of ventilation and water permeation, the aim of timely reinforcing in flood fighting, disaster relief and emergency rescue is mainly fulfilled conveniently, and the outer layer packaging bag adopts a sealing design, so that the packaging bag has the functions of water resistance and moisture resistance, and the product does not generate a solidification effect in the storage process.
Through processing, integrate the material together, can once only carry, saving the cost of labor that can be great, can shorten 3 times the time of speedily carrying out rescue work, whole need not encapsulate once more, direct use can, convenient operation is simple in flood control and flood fighting rescue work, the time spent is short, can win the valuable time for the flood fighting rescue work, extranal packing is through special design, it is more convenient at the use, certain cost advantage has, through setting up the additive that mixes, meet water rapidly and solidify, intensity increases soon, rapid final setting in the short time, rapid reinforced effect has, the setting time also can be adjusted according to user's demand.
In conclusion, the special concrete material capable of being rapidly solidified for flood fighting, disaster relief and emergency rescue and the preparation method thereof provided by the invention have the advantages that the materials are integrated together through processing, the concrete material can be carried at one time, the labor cost can be greatly saved, the 3 times of emergency rescue time can be shortened, the concrete material is directly used without being packaged again, the operation is convenient and simple in flood fighting, the time consumption is short, the valuable time can be won for the flood fighting and emergency rescue, the outer package is specially designed, the use process is more convenient, certain cost advantage is provided, the concrete material can be rapidly solidified when meeting water, the strength is rapidly increased, the concrete material can be rapidly finally solidified in a short time, the rapid reinforcement effect is realized, and the solidification time can be adjusted according to the requirements of users.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. A low-cost concrete material special for flood fighting, disaster relief and emergency rescue is characterized in that: the material comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following materials in parts; the content of the ordinary Portland cement is 400-600 parts, the content of the machine-made sand is 550-700 parts, and the content of the fine stone is 200-400 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 20-40 parts, and the content of calcium oxide is 10-30 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5-10 parts, and the content of the mixing water is 20-30 parts.
2. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized in that: the group A raw materials are prepared from the following materials in parts; the content of the ordinary Portland cement is 400-700 parts, the content of the machine-made sand is 560-720 parts, and the content of the fine stone is 230-400 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 21-42 parts, and the content of calcium oxide is 12-32 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 6-12 parts, and the content of the mixing water is 21-32 parts.
3. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized in that: the material comprises a group A raw material, a group B raw material and a group C raw material, wherein the group A raw material is prepared from the following materials in parts; the raw material A is prepared from the following materials in parts; 380-600 parts of ordinary portland cement, 520-700 parts of machine-made sand and 300-420 parts of fine stone; the component B comprises the following raw materials in parts: the content of sodium aluminate is 18-46 parts, and the content of calcium oxide is 8-36 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 3-15 parts, and the content of the mixing water is 17-41 parts.
4. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized in that: the group A raw materials are prepared from the following materials in parts; the content of the ordinary Portland cement is 400-680 parts, the content of the machine-made sand is 550-730 parts, and the content of the fine stone is 200-480 parts; the component B comprises the following raw materials in parts: the content of sodium aluminate is 20-46 parts, and the content of calcium oxide is 10-39 parts; the group C raw materials are prepared from the following materials in parts: the content of the expanding agent in the cementing material is 5-17 parts, and the content of the mixing water is 20-36 parts.
5. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized in that: the cement in the group A raw materials comprises 41 percent of tricalcium silicate, 29 percent of dicalcium silicate, 3 percent of tricalcium aluminate, 15 percent of tetracalcium aluminoferrite and 12 percent of gypsum.
6. The low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized in that: the raw materials of the component A and the raw materials of the component B are mixed and stirred at the temperature of 1-130 ℃, and other materials do not need to be added.
7. The preparation method of the low-cost concrete material special for flood fighting, disaster relief and emergency rescue according to claim 1, which is characterized by comprising the following steps: the method comprises the following steps:
s1: pretreatment of sand: the method comprises the following steps of (1) conveying sand back to a raw material from a sand yard, then drying, screening and storing, firstly ensuring that the sand in a material component is in a dry state, so that the sand is not solidified in the storage process, classifying particle groups with wider sand particle size range according to particle size by using a screening device, enabling the sand quality to meet the specified particle size distribution requirement, storing the dried and screened sand in a sealed tank body, and avoiding the sand from contacting with moisture in the air, so that the material is convenient to prepare;
s2: material preparation and weighing: by utilizing an industrial automatic weighing and batching metering device, a metering system guides raw materials in a stock bin into a metering bin under the matching of a metering screw, the raw materials are metered by data feedback of a metering scale sensor, the raw materials can be continuously conveyed, and the raw materials are accurately metered and automatically batched according to the dosage of a mixing ratio;
s3: mixing and stirring: the measured materials are guided into a main elevator through a screw conveyor and are lifted into a material mixing bin at the upper part of the mixing machine, when a pneumatic big door of the material mixing bin is opened, the materials to be mixed are quickly and accurately put into a gravity-free stirring machine, and the materials are mixed and stirred for continuous production, so that the materials are uniformly mixed, and the stable quality is ensured;
s4: packaging: the finished product which is uniformly stirred in the mixing stirrer is quickly placed into a finished product bin for buffering and storage through a pneumatic quick opening door, the finished product bin and the packaging machine are packaged, metered and packaged through a soft link, and when a large requirement is met on the product or the sales volume, a belt conveyor can be added in the rear process of the packaging machine to directly convey the finished product to a finished product area or a transport vehicle;
s5: designing a finished product packaging bag: the packaging bag is divided into an inner layer and an outer layer, the inner layer packaging bag adopts a micropore design, so that the packaging bag has the effects of ventilation and water permeation, the aim of timely reinforcing in flood fighting, disaster relief and emergency rescue is mainly fulfilled conveniently, and the outer layer packaging bag adopts a sealing design, so that the packaging bag has the functions of water resistance and moisture resistance, and the product does not generate a solidification effect in the storage process.
8. The preparation method of the concrete material capable of being rapidly solidified and specially used for flood fighting, disaster relief and emergency rescue according to claim 7, wherein the preparation method comprises the following steps: for S3, the high-strength material is reinforced after being transported to a construction site by a transport vehicle.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113402214A (en) * | 2021-07-29 | 2021-09-17 | 广西鑫和建材科技产业开发有限公司 | Greening concrete material for fixing soil and improving ecological environment and preparation method thereof |
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| CN109987912A (en) * | 2019-03-10 | 2019-07-09 | 胡春宇 | Zeolite prepares iron tailings dry powder and mortar |
| WO2021017900A1 (en) * | 2020-03-13 | 2021-02-04 | 青岛理工大学 | Carbon fiber-doped conductive cement-based material and preparation method and use therefor |
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2021
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| CN1085842A (en) * | 1993-09-16 | 1994-04-27 | 张森雄 | The manufacture method of dry type concrete |
| CN1556058A (en) * | 2003-12-31 | 2004-12-22 | 天津大学 | High performance cenent concrete material used for engineering fast first aid repairing |
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| CN113402214A (en) * | 2021-07-29 | 2021-09-17 | 广西鑫和建材科技产业开发有限公司 | Greening concrete material for fixing soil and improving ecological environment and preparation method thereof |
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Application publication date: 20210803 |