CN110204273A - A kind of Desert Sand cement-base composite material and its preparation process - Google Patents
A kind of Desert Sand cement-base composite material and its preparation process Download PDFInfo
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- CN110204273A CN110204273A CN201910415243.4A CN201910415243A CN110204273A CN 110204273 A CN110204273 A CN 110204273A CN 201910415243 A CN201910415243 A CN 201910415243A CN 110204273 A CN110204273 A CN 110204273A
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- cement
- desert sand
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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
-
- 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)
Abstract
The invention discloses a kind of Desert Sand cement-base composite material and its preparation processes, wherein, the Desert Sand cement-base composite material is made of major ingredient, auxiliary material I (water-reducing agent), auxiliary material II (fiber) and water, water-cement ratio is 0.36-0.38, and the composition of major ingredient is as follows: 1.0 parts by weight of cement, Desert Sand 1.0-3.5 parts by weight, flyash 2.0-4.0 parts by weight, desulfurized gypsum 0.1-0.5 parts by weight, SILICA FUME 0.15-0.6 parts by weight；Water-reducing agent dosage accounts for the 0.5-1% of cement weight；The volume fraction of fiber is 0-2%.The invention has the beneficial effects that: without adding coarse aggregate stone, all selecting Desert Sand is fine aggregate, low in cost with flyash, desulfurized gypsum and SILICA FUME replacing partial cement；Water-reducing agent has been added, water-cement ratio is reduced, there is preferable mechanical property；The Desert Sand resource for taking full advantage of China, alleviates sand and stone resources predicament in short supply；Flyash and desulfurized gypsum are taken full advantage of, cement has not only been saved, but also realizes the large resource utilization of power plant's coal base lime-ash.
Description
Technical field
The present invention relates to a kind of construction material and its preparation processes, and in particular to a kind of Desert Sand cement-base composite material
And its preparation process, belong to civil engineering work field of material technology.
Background technique
Concrete is one of the construction material being most widely used in field of civil engineering.Normal concrete tensile strength
It is low, stretcher strain is small, poor toughness, crack is difficult to control after having the shortcomings that easily to occur brittle break, cracking, increasingly cannot
Meets the needs of modern project structure.Currently, being one of main, effective ameliorative way of one kind using fiber reinforcement technology.
Sand, stone are to prepare the essential composition material of concrete.After large-scale basis engineering construction, naturally
Sand, Shi Ziyuan are not able to satisfy current no matter from the perspective of reserves, quality, or from the perspective of sustainable development
The needs of construction scale.Since 2017, with the increase of environmentally friendly dynamics, sandstone industry experienced unprecedented environmental protection and superintend and direct
Storm is looked into, part sandstone mine shuts down rectification and the closing of medium and small sandstone producer, sandstone apparent availability is caused to be greatly decreased,
Some areas sandstone market even falls into the situation of supply shortage, it is following then be in the whole country (big-and-middle small city with
Villages and small towns) sandstone price rises steadily, mostly show continuous rise trend.Some areas are even since sandstone shortage causes
Some importance engineering construction is obstructed, and the progress of infrastructure construction in china is seriously affected.
Chinese Regional is vast, and the desert gross area is about 1,300,000 square kilometres, these deserts are mainly distributed on China western part
Area, wherein Taklimakan Desert Area and Gurbantunggut Desert two large deserts area is just distributed in Xinjiang province within the border, and area accounts for about the whole nation
The 30% of the desert gross area.If building sand can be substituted using Desert Sand, the concrete of suitable engineer application is prepared,
It is all of great significance for reducing project cost, protection local environment and rational exploitation and utilization natural resources.
Coal-fired thermal power generation is still the most important electric power energy in China, and western China is almost coal-fired firepower hair entirely
Electricity.The coals base lime-ash such as flyash, cinder, the desulfurized gypsum of coal-burning power plant's discharge account for 40% left side of national industrial solid castoff
The right side, and be increasing year by year with annual 10% or so speed.Although coal base lime-ash has obtained certain resource utilization, mesh
Preceding utilization rate is still very low, especially the west areas such as Xinjiang, and a large amount of remaining coal base lime-ash can only do heap buried processing.It establishes
The stacking place of coal base lime-ash will not only occupy a large amount of soils, and it is per ton also need to invest tens of to dozens of yuan member, add
Freight, this is also a no small burden for many coal-fired thermal power generation corporations, therefore superfluous power plant's coal base is grey
The comprehensive utilization of resources of slag has been extremely urgent task.
Portland cement has become modernization construction and indispensable one of the construction material of social development progress.However,
CO in ordinary portland cement raw material calcination process2Formation and release cause the increase of carbon emission amount.1kg ordinary silicon
0.66-0.82 carbon emission, the CO that global manufacture of cement generates can be generated in acid salt cement production process2Account for artificial carbon dioxide
The 5-7% of discharge.On the other hand, 1400 DEG C of hot conditions consume a large amount of energy in cement production process.China is every
Year about consumes 2,000,000,000 tons or so of cement, is that global cement consumes maximum country.Therefore, low energy consumption high-environmental construction material
Exploration and research and development have become the emphasis of global green construction material research work.
Currently, common desert sand concrete, needs to add coarse aggregate stone, and only replaced naturally with Desert Sand part
Sand or part substitution machine-made sand, cementitious material add a small amount of flyash (less than 30%) and slag based on cement,
Basic no admixture Industrial Solid Wastes such as desulfurized gypsum and SILICA FUME.
And to those skilled in the art, how by waste materials such as the flyash of power plant emission and desulfurized gypsum and husky
Unconcerned sand perfectly combines, and realizes the rational exploitation and utilization of region natural resources and Industrial Solid Waste, obtains Building wood best in quality
Material is one of major issue urgently to be resolved.
Summary of the invention
To solve the deficiencies in the prior art, it then follows adaptation to local conditions, the original gathered materials on the spot with rational exploitation and utilization natural resources
Then, the purpose of the present invention is to provide a kind of novel green Desert Sand cement base low in cost, with preferable mechanical property is multiple
Condensation material, and a kind of fairly simple technique for preparing the composite material.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of Desert Sand cement-base composite material, which is characterized in that be made of major ingredient, auxiliary material I, auxiliary material II and water, glue
Than for 0.36-0.38, in which:
The composition of major ingredient is as follows:
The composition of auxiliary material I is as follows:
The 0.5-1% of water-reducing agent cement weight；
The composition of auxiliary material II is as follows:
Fiber volume rate 0-2%.
Desert Sand cement-base composite material above-mentioned, which is characterized in that aforementioned cement is P.O42.5 normal silicate water
The mixture or the higher ordinary portland cement of strength grade of mud, P.C42.5 composite Portland cement or both or
Composite Portland cement.
Desert Sand cement-base composite material above-mentioned, which is characterized in that aforementioned Desert Sand is derived from the Gu Erbantonggu in Xinjiang
Special desert or the Takla Makan Desert, average grain diameter 0.170-0.183mm, fineness modulus 0.131-0.145 accumulate close
Degree is 1438-1560kg/m3。
Desert Sand cement-base composite material above-mentioned, which is characterized in that aforementioned water-reducing agent is polycarboxylate water-reducer, containing solid
Amount is 10%.
Desert Sand cement-base composite material above-mentioned, which is characterized in that aforementioned fiber be basalt fibre, PVA fiber or
The mixture of the two.
The technique for preparing Desert Sand cement-base composite material above-mentioned, which comprises the following steps:
Step1: weighing cement, Desert Sand, flyash, desulfurized gypsum and SILICA FUME in proportion, these powders investment is mixed
With in container and stir 5min, mixed dry material is prepared；
Step2: weighing water and water-reducing agent in proportion, mixes and stirs in container and stirs 0.5min for the two investment, be prepared
Mixing liquid；
Step3: being slowly added to mixing liquid into mixed dry material, stirs while being added, evenly mixes 5-10min,
Paste mixture is prepared；
Step4: boring along stirring or the direction of container rotation is slowly added to prior scattered fibre into paste mixture
Dimension, mixes slowly when adding fiber, after whole fibers are all added and mix and stir container, first stirs at low speed 5min, then high-speed stirred
Final Desert Sand cement-base composite material is prepared in 15-20min.
Technique above-mentioned, which is characterized in that in Step4, when stirring at low speed, the revolving speed for stirring brill is 480r/min；It is high
When speed stirring, the revolving speed for stirring brill is 800r/min.
The invention has the beneficial effects that:
(1) Desert Sand cement-base composite material provided by the invention all selects desert without adding coarse aggregate stone
Sand is fine aggregate, with flyash, desulfurized gypsum and SILICA FUME replacing partial cement, so low in cost；
(2) Desert Sand cement-base composite material provided by the invention, has added water-reducing agent, reduces water-cement ratio, both can be with
It saves water, the material of preparation has preferable mechanical property again；
(3) Desert Sand cement-base composite material provided by the invention takes full advantage of the Desert Sand resource of China, alleviates
The predicament of current sand, stone rapid rise of price and sand, stone resource scarcity；
(4) Desert Sand cement-base composite material provided by the invention takes full advantage of power plant's industrial residue flyash and takes off
The volume of sulphur gypsum, especially flyash is very big, has not only saved cementitious material cement, has reduced carbon emission, but also has realized power plant's coal
The large resource utilization of base lime-ash reduces lime-ash bring environmental pollution.
Specific embodiment
Below in conjunction with detailed description of the invention by specific embodiments.
One, prepare raw material
Desert Sand cement-base composite material provided by the invention is made of major ingredient, auxiliary material I, auxiliary material II and water, and water-cement ratio is
0.30-0.38, in which:
The composition of major ingredient is as follows:
The composition of auxiliary material I is as follows:
The 0.5-1% of water-reducing agent cement weight；
The composition of auxiliary material II is as follows:
Fiber volume rate 0-2%.
In the formula:
(1) it is not spiked with coarse aggregate stone, all selecting Desert Sand is fine aggregate, with flyash, desulfurized gypsum and SILICA FUME
Replacing partial cement, it is low in cost compared with now common engineered cementitious based composites；
(2) water-reducing agent is added, primarily to reducing water-cement ratio, the mechanical property of material is can be improved in lesser water-cement ratio
Energy；
(3) adding of fiber, primarily to improving the tensile property and toughness of material；
(4) desulfurized gypsum is added, exciting agent can be played the role of.
In this embodiment, we have prepared 10 groups of Desert Sand cement-base composite materials, and according to the form below formula weighs
Major ingredient, auxiliary material I, auxiliary material II and water:
Wherein:
(1) cement: what we selected is P.O42.5 ordinary portland cement, and it is compound can be substituted for P.C42.5
The mixture or strength grade of portland cement or P.O42.5 ordinary portland cement and P.C42.5 composite Portland cement
Higher ordinary portland cement or the higher composite Portland cement of strength grade；
(2) Desert Sand: what we selected is the sand of Gurbantunggut Desert, xinjiang, china, the sand average grain diameter at this
For 0.170-0.183mm, fineness modulus 0.131-0.145, bulk density 1438-1560kg/m3, can be replaced
At the sand for being derived from the Takla Makan Desert, average grain diameter, fineness modulus and the bulk density of the sand at this all with Gu Erban
The sand in the desert Tong Gute is very close；
(3) water-reducing agent: what we selected is polycarboxylate water-reducer.
Two, it is prepared into Desert Sand cement-base composite material
The technics comparing provided by the invention for preparing above-mentioned Desert Sand cement-base composite material is simple, comprising the following steps:
Step1: weighing cement, Desert Sand, flyash, desulfurized gypsum and SILICA FUME in proportion, these powders investment is mixed
With in container and stir 5min, mixed dry material is prepared.
Step2: weighing water and water-reducing agent in proportion, mixes and stirs in container and stirs 0.5min for the two investment, be prepared
Mixing liquid.
Step3: being slowly added to mixing liquid into mixed dry material, stirs while being added, evenly mixes 5-10min
(in this embodiment, we the mixing time will be set to 10min), paste mixture is prepared.
Step4: it is slowly added to along the direction that (or container) rotation is bored in stirring into paste mixture scattered in advance
Fiber is mixed slowly when adding fiber, and after whole fibers are all added and mix and stir container, (stir the revolving speed bored is first low speed
5min, then high speed (revolving speed that stirring is bored is 800r/min) stirring 15-20min 480r/min) are stirred (in this specific embodiment party
In formula, mixing time is set to 20min by us), final Desert Sand cement-base composite material is prepared.
Three, the mechanical property of Desert Sand cement-base composite material is examined
1, compression strength
Manufactured size is 100mm × 100mm × 100mm test cube, test basis " normal concrete mechanical property
Can test method standard " relevant regulations load test block in (GB/T50081-2016).Test block loading velocity is 0.3MPa/s,
When test block transversely deforming is larger, Adjustment Tests machine makes loading velocity 0.1MPa/s, until test block destroys.
2, tensile splitting strength
Manufactured size is 100mm × 100mm × 100mm test cube, according to " normal concrete mechanical property examination
Test method standard " relevant regulations load test block in (GB/T50081-2016).Cleave pressure-bearing surface and splitting surface and test block forming
When top surface it is vertical, padded between upper and lower pressing plate and test block with arc-shaped cushion block and filler strip each one, cushion block and filler strip and examination
The center line alignment of block above and below is simultaneously vertical with top surface when molding.Loading continuous uniform when test, loading speed are
0.05MPa/s。
3, flexural strength
Manufactured size is 40mm × 40mm × 160mm test block, is tested according to " Test method for strength of hydraulic cement mortar " (GB
17671-1999), test span is 100mm, and span centre presses displacement load, loading speed 0.5mm/min.
Inspection result is as follows:
| Group | Compression strength | Tensile splitting strength | Flexural strength |
| 1 | 30.73MPa | 3.71MPa | 16.32MPa |
| 2 | 25.82MPa | 3.78MPa | 15.14MPa |
| 3 | 28.34MPa | 3.55MPa | 15.30MPa |
| 4 | 34.16MPa | 2.64MPa | 8.86MPa |
| 5 | 27.65MPa | 3.65MPa | 15.00MPa |
| 6 | 36.92MPa | 3.33MPa | 10.87MPa |
| 7 | 31.46MPa | 2.90MPa | 13.34MPa |
| 8 | 30.71MPa | 2.67MPa | 6.56MPa |
| 9 | 37.90MPa | 3.29MPa | 6.06MPa |
| 10 | 43.40MPa | 3.78MPa | 12.33MPa |
It is complete by inspection result it is found that Desert Sand cement-base composite material provided by the invention has preferable mechanical property
It all can satisfy the use demand.
It should be noted that the above embodiments do not limit the invention in any form, it is all to use equivalent replacement or equivalent change
The mode changed technical solution obtained, falls within the scope of protection of the present invention.
Claims (8)
1. a kind of Desert Sand cement-base composite material, which is characterized in that be made of major ingredient, auxiliary material I, auxiliary material II and water, water-cement ratio
For 0.30-0.38, in which:
The composition of major ingredient is as follows:
The composition of auxiliary material I is as follows:
The 0.5-1% of water-reducing agent cement weight；
The composition of auxiliary material II is as follows:
Fiber volume rate 0-2%.
2. Desert Sand cement-base composite material according to claim 1, which is characterized in that the cement is that P.O42.5 is general
The mixture or the higher normal silicate of strength grade of logical portland cement, P.C42.5 composite Portland cement or both
Cement or composite Portland cement.
3. Desert Sand cement-base composite material according to claim 1, which is characterized in that the Desert Sand is derived from Xinjiang
Ancient capital Xi'an or the Takla Makan Desert, average grain diameter 0.170-0.183mm, fineness modulus 0.131-
0.145, bulk density 1438-1560kg/m3。
4. Desert Sand cement-base composite material according to claim 1, which is characterized in that the water-reducing agent subtracts for polycarboxylic acids
Aqua, solid content 10%.
5. Desert Sand cement-base composite material according to claim 1, which is characterized in that the fiber is that basalt is fine
The mixture of dimension, PVA fiber or both.
6. preparing the technique of Desert Sand cement-base composite material described in claim 1 to 5 any one, which is characterized in that packet
Include following steps:
Step1: weighing cement, Desert Sand, flyash, desulfurized gypsum and SILICA FUME in proportion, these powders investment is mixed and stirred appearance
In device and 5min is stirred, mixed dry material is prepared；
Step2: weighing water and water-reducing agent in proportion, mixes and stirs in container and stirs 0.5min for the two investment, mixing is prepared
Liquid；
Step3: being slowly added to mixing liquid into mixed dry material, stirs while being added, and evenly mixes 5-10min, preparation
Obtain paste mixture；
Step4: boring along stirring or the direction of container rotation is slowly added to prior scattered fiber, side into paste mixture
Add fiber side to mix slowly, after whole fibers are all added and mix and stir container, first stirs at low speed 5min, then high-speed stirred 15-
Final Desert Sand cement-base composite material is prepared in 20min.
7. technique according to claim 6, which is characterized in that in Step4, when stirring at low speed, the revolving speed for stirring brill is
480r/min。
8. technique according to claim 6, which is characterized in that in Step4, when high-speed stirred, the revolving speed for stirring brill is
800r/min。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408912A (en) * | 2020-11-20 | 2021-02-26 | 中铁二十局集团有限公司 | Low-cost sprayed concrete and preparation method thereof |
| CN112876177A (en) * | 2021-04-07 | 2021-06-01 | 西京学院 | Desert sand epoxy resin composite mortar and preparation method thereof |
| CN112979257A (en) * | 2021-03-10 | 2021-06-18 | 青海黄河上游水电开发有限责任公司 | Foundation pit slope prefabricated guard plate utilizing desert sand and preparation method and application thereof |
| CN115893929A (en) * | 2022-09-29 | 2023-04-04 | 国网新疆电力有限公司建设分公司 | C50-grade pumping fiber concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036651A (en) * | 2015-07-24 | 2015-11-11 | 石河子大学 | Desert sand concrete |
| CN108017356A (en) * | 2017-12-12 | 2018-05-11 | 南京倍立达新材料系统工程股份有限公司 | A kind of low-cementitious material dosage high-strength plate and its production method |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
-
2019
- 2019-05-17 CN CN201910415243.4A patent/CN110204273A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036651A (en) * | 2015-07-24 | 2015-11-11 | 石河子大学 | Desert sand concrete |
| CN108017356A (en) * | 2017-12-12 | 2018-05-11 | 南京倍立达新材料系统工程股份有限公司 | A kind of low-cementitious material dosage high-strength plate and its production method |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408912A (en) * | 2020-11-20 | 2021-02-26 | 中铁二十局集团有限公司 | Low-cost sprayed concrete and preparation method thereof |
| CN112979257A (en) * | 2021-03-10 | 2021-06-18 | 青海黄河上游水电开发有限责任公司 | Foundation pit slope prefabricated guard plate utilizing desert sand and preparation method and application thereof |
| CN112979257B (en) * | 2021-03-10 | 2021-10-22 | 青海黄河上游水电开发有限责任公司 | Foundation pit slope prefabricated guard plate utilizing desert sand and preparation method and application thereof |
| CN112876177A (en) * | 2021-04-07 | 2021-06-01 | 西京学院 | Desert sand epoxy resin composite mortar and preparation method thereof |
| CN115893929A (en) * | 2022-09-29 | 2023-04-04 | 国网新疆电力有限公司建设分公司 | C50-grade pumping fiber concrete |
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