CN104609806A - Seawater coral sand artificial aggregate concrete block and preparation method thereof - Google Patents
Seawater coral sand artificial aggregate concrete block and preparation method thereof Download PDFInfo
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- CN104609806A CN104609806A CN201510041010.4A CN201510041010A CN104609806A CN 104609806 A CN104609806 A CN 104609806A CN 201510041010 A CN201510041010 A CN 201510041010A CN 104609806 A CN104609806 A CN 104609806A
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Abstract
The invention discloses a seawater coral sand artificial aggregate concrete block and a preparation method thereof. A novel block material adopts a small amount of spherical water-absorbing resin for absorbing seawater to prepare a large amount of artificial aggregates instead of coarse aggregates such as gravel in conventional concrete, island coral sand is utilized for replacing fine aggregates such as river sand in the conventional concrete, natural seawater is adopted for mixing to produce a novel concrete prefabricated block with an inner housing honeycomb structure, and the block is used for a wall masonry structure in island project construction. The block is light in mass, good in thermal performance, simple to produce and convenient to use; the material transport amount of the island project construction is reduced by more than 60%, local material utilization and industrialized production of island project construction materials can be realized, and a novel building masonry material is provided for solving problems of difficult transportation, high cost, long cycle and the like of the island project construction materials.
Description
Technical field
The invention belongs to New Building Materials technical field, be specifically related to a kind of seawater and mix foster coral sand artificial aggregate concrete segment and preparation method thereof.
Background technology
China's South China Sea rich in mineral resources, strategic location is of crucial importance, and accelerating Reef in Chinese South Sea engineering construction is the prerequisite of effectively exercising sovereignty, defending tenaciously marine traffic thoroughfare, developing oceanic resources.But because Reef in Chinese South Sea is away from inland, harsh environmental conditions, material supply difficulty, islands and reefs development difficulty is large.At present, a lot of islands and reefs are not on garrison duty facility, illegally nibbled occupy by periphery neighbouring country, seriously constrain China's South Sea maritime rights and interests and safeguard and management and control.Therefore, be badly in need of accelerating islands and reefs engineering construction Study on Problems.
Reef in Chinese South Sea does not have the material of construction that can directly utilize, and the materials such as sand, stone, building block needed for engineering construction need be raised or Prefabrication in inland, then off-lying sea is transported to islands and reefs, and its cost is high, frequent is subject to sea situation weather effect so that delay the duration; In addition with a varied topography, the narrow field of islands and reefs, large ship cannot be close, and material turnover is had bad luck extremely difficult, the coral sand that thus research and utilization islands and reefs are abundant and seawater resources, organize production building block material on the spot, significant to the engineering construction of quickening Reef in Chinese South Sea.
Summary of the invention
The object of the invention is to solve above-mentioned the problems of the prior art, propose a kind of seawater for islands and reefs engineering construction and mix foster coral sand artificial aggregate concrete segment and preparation method thereof, the method utilizes a small amount of sodium polyacrylate spherical water-absorbent resin fully to absorb seawater expansion decades of times to prepare accurate solid-state artificial aggregate and substitute the coarse aggregates such as rubbles a large amount of in conventional concrete, islands and reefs coral sand is utilized to substitute the fine aggregates such as the river sand in conventional concrete, adopt natural sea-water to substitute fresh water and mix and stir production ready mixed concrete, water again and build up various blockwork, for the wall masonry structure in islands and reefs engineering construction, realize gathering materials on the spot of block material in islands and reefs engineering construction, self-supplying production.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of seawater mixes foster coral sand artificial aggregate concrete segment, is that to mix and stir the concrete placement of production by the seawater of the cement cementitious material of 500 ~ 750 parts, the aluminosulfate cement of 50 ~ 100 parts, the artificial aggregate of 150 ~ 350 parts, the high efficiency water reducing agent of 15 ~ 30 parts, the fiber of 1 ~ 2 part, the coral sand of 500 ~ 800 parts and 250 ~ 340 parts shaping in Standard Module.
Described cement cementitious material is the one in silicate cement, ordinary Portland cement or slag cement; Aluminosulfate cement adopts early-strength type aluminosulfate cement.
The sodium polyacrylate spherical water-absorbent resin that described artificial aggregate is 1 ~ 2.5mm by diameter fully absorbs after seawater expands and obtains.
Described high efficiency water reducing agent is the one in polysulfonate, polycarboxylate or melamine sulfonate.
Described fiber adopts 9 ~ 18mm polypropylene fibre or alkali resistant glass fiber.
The concrete segment folding strength made is greater than 2.5MPa, and ultimate compression strength is 15.2 ~ 25MPa, unit dry weight 1740 ~ 1991kg/m
3.
The invention also discloses the preparation method that a kind of seawater mixes foster coral sand artificial aggregate concrete segment, comprise the following steps:
1) on islands and reefs, open up prefabricated place, sodium polyacrylate spherical water-absorbent resin loaded permeable bag and put into seawater nearby and absorb seawater, making volumetric expansion prepare 150 ~ 350 parts of artificial aggregates, simultaneously in situ recovery islands and reefs coral sand screen out foreign material;
2) by the cement cementitious material of 500 ~ 750 parts, the aluminosulfate cement of 50 ~ 100 parts, the high efficiency water reducing agent of 15 ~ 30 parts, the fiber of 1 ~ 2 part, the coral sand mix and blend of 500 ~ 800 parts, the seawater of 250 ~ 340 parts is added while stirring, and stir, add 150 ~ 350 parts of artificial aggregates again, continue to stir into ready mixed concrete, vibration compacting after finally pouring into the mold, the demoulding after 3 days, spray seawater maintenance more than 7 days, cyclic production like this, obtains seawater and mixes foster coral sand artificial aggregate concrete segment.
Described step 2) in, water reducer adopts the one in polysulfonate, polycarboxylate or melamine sulfonate; Fiber adopts 9 ~ 18mm polypropylene fibre or alkali resistant glass fiber.
Described step 2) in, adopt artificial or mechanical system to stir into ready mixed concrete, then adopt artificial or mechanical system vibration compacting after being poured into Standard Module.
Seawater prepared by aforesaid method mixes a foster coral sand artificial aggregate concrete segment, and its folding strength is greater than 2.5MPa, and ultimate compression strength is 15.2 ~ 25MPa, unit dry weight 1740 ~ 1991kg/m
3.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts a small amount of sodium polyacrylate spherical water-absorbent resin fully to absorb a large amount of solid-state artificial aggregate of standard of seawater expansion preparation and substitutes the coarse aggregates such as the rubble in conventional concrete, achieves " many with few change " of material simultaneously; The present invention utilizes islands and reefs coral sand and natural sea-water resource replace the river sand fine aggregate in conventional concrete and mix and stir with fresh water completely, achieves material " gathering materials on the spot ", and reduce islands and reefs engineering construction starting material traffic capacity more than 60%, benefit is obvious.
The present invention adopts spherical water-absorbent resin artificial aggregate to form the spherical inner housing honeycomb structure with good force structure in concrete segment inside, ensure that material has higher intensity; The spherical water-absorbent resin of abundant water suction seawater slowly discharges water in concrete segment, achieves interior maintenance and Self-curing, improves the intensity of concrete segment; The mixing of fiber can retrain and the generation stoping blockwork crack, improves block strength particularly folding strength simultaneously.This compression strength of building block is greater than 15MPa after tested, and folding strength is greater than 2.5MPa, meets building masonry structure requirement of strength completely.
Further, the present invention adopts polysulfonate, polycarboxylate or melamine sulfonate high efficiency water reducing agent, makes ready mixed concrete have good workability and mobility, ensure that concrete enters the density after mould and building block quality; The morning that appropriate aluminosulfate cement achieves blockwork coagulates by force soon, improves building block production efficiency and weather resistance; Coral sand that this building block adopts is natural light-weight aggregate, and inside is hollow ball honeycomb structure, and building block unit dry weight is 1740 ~ 1991kg/m
3, there is quality light, the characteristics such as heat preservation energy-saving; This building block is gathered materials on the spot, in situ preparation, production are simple, for islands and reefs engineering construction provides a kind of novel material of construction.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is further described.
The seawater that the present invention proposes mixes foster coral sand artificial aggregate concrete by cement cementitious material, aluminosulfate cement, high efficiency water reducing agent, fiber, artificial aggregate and coral sand, mix and stir production concrete through seawater, its every cube each constituent mass is: label 42.5 cement cementitious material 500 ~ 750 parts, aluminosulfate cement 50 ~ 100 parts, artificial aggregate 150 ~ 350 parts, high efficiency water reducing agent 15 ~ 30 parts, fiber 1 ~ 2 part, coral sand 500 ~ 800 parts, 250 ~ 340 parts, seawater.This concrete by artificial or mechanical stirring, be cast in the building block prefabricated mould of standard, making length is 390mm, width is 90mm, 120mm, 140mm, 190mm, 240mm, 280mm, be highly the hollow of 90mm, 140mm, 190mm or solid block, building block size can be adjusted accordingly as required.This building block folding strength is greater than 2.5MPa, ultimate compression strength 15.2 ~ 25MPa, unit dry weight 1740 ~ 1991kg/m
3.
Preparation method of the present invention is by realizing with under type:
Islands and reefs are opened up prefabricated place, in advance load weighted spherical water-absorbent resin is loaded permeable bag, put into seawater nearby and make it fully absorb seawater to expand preparation artificial aggregate, simultaneously in situ recovery coral sand screen out foreign material; By artificial or machinery, cement cementitious material, aluminosulfate cement, high efficiency water reducing agent, fiber and coral sand mixed in proportion and add after appropriate seawater stirs, add artificial aggregate in proportion again, continue to stir into ready mixed concrete, finally be cast in vibration compacting in standard block mould, the demoulding after 3 days, sprinkling seawater maintenance more than 7 days, cyclic production like this.
Enumerate specific embodiments of the invention below:
Embodiment 1
By following material and proportioning: China Resources, Hainan 42.5 ordinary Portland cement 500 parts, Shanxi special cement factory 52.5 aluminosulfate cement 100 parts, melamine sulfonate high efficiency water reducing agent 15 parts, polypropylene fibre 1 part, after coral sand 800 parts takes starting material, about 260 parts, seawater is added while stirring with stirrer, stir after 5 ~ 10 minutes, add artificial aggregate 250 parts and continue stir about after 3 minutes, being poured into specification is in the building block mould of 390mm × 190mm × 190mm and in shaking table jolt ramming, field fabrication standard resistance to compression simultaneously and anti-folding test specimen, jointly put into the maintenance of room temperature seawater.
After tested, this concrete segment folding strength 2.5MPa, ultimate compression strength 15.2MPa, unit dry weight 1740kg/m
3.
Embodiment 2
By following material and proportioning: China Resources, Hainan 42.5 ordinary Portland cement 650 parts, Shanxi special cement factory 52.5 aluminosulfate cement 50 parts, polycarboxylate high-efficiency water reducing agent 30 parts, polypropylene fibre 1.5 parts, after coral sand 500 parts takes starting material, about 250 parts, seawater is added while stirring with stirrer, stir after 5 ~ 10 minutes, add artificial aggregate 350 parts and continue stir about after 3 minutes, being poured into specification is in the building block mould of 390mm × 190mm × 190mm and in shaking table jolt ramming, field fabrication standard resistance to compression simultaneously and anti-folding test specimen, put into the maintenance of room temperature seawater.
After tested, this concrete segment folding strength 3.4MPa, ultimate compression strength 19.7MPa, unit dry weight 1825kg/m
3.
Embodiment 3
By following material and proportioning: Hainan Lan Dao 42.5 slag cement 550 parts, Shanxi special cement factory 52.5 aluminosulfate cement 75 parts, polycarboxylate high-efficiency water reducing agent 20 parts, polypropylene fibre 2 parts, after coral sand 650 parts takes starting material, about 270 parts, seawater is added while stirring with stirrer, stir after 5 ~ 10 minutes, add artificial aggregate 150 parts and continue stir about after 3 minutes, being poured into specification is in the building block mould of 390mm × 190mm × 190mm and in shaking table jolt ramming, field fabrication standard resistance to compression simultaneously and anti-folding test specimen, jointly put into the maintenance of room temperature seawater.
After tested, this concrete segment folding strength 4MPa, ultimate compression strength 25MPa, unit dry weight 1991kg/m
3.
Embodiment 4
By following material and proportioning: Hainan Lan Dao 42.5 slag cement 750 parts, Shanxi special cement factory 52.5 aluminosulfate cement 50 parts, polysulfonate high efficiency water reducing agent 30 parts, polypropylene fibre 2 parts, after coral sand 500 parts takes starting material, about 340 parts, seawater is added while stirring with stirrer, stir after 5 ~ 10 minutes, add artificial aggregate 350 parts and continue stir about after 3 minutes, being poured into specification is in the building block mould of 390mm × 190mm × 190mm and in shaking table jolt ramming, field fabrication standard resistance to compression simultaneously and anti-folding test specimen, jointly put into the maintenance of room temperature seawater.
After tested, this concrete segment folding strength 3.4MPa, ultimate compression strength 19.5MPa unit dry weight 1900kg/m
3.
Above content is only and technological thought of the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change that technical scheme basis is done, within the protection domain all falling into claims of the present invention.
Claims (10)
1. a seawater mixes foster coral sand artificial aggregate concrete segment, it is characterized in that, this building block concrete is that to mix and stir the concrete placement of production by the seawater of the cement cementitious material of 500 ~ 750 parts, the aluminosulfate cement of 50 ~ 100 parts, the artificial aggregate of 150 ~ 350 parts, the high efficiency water reducing agent of 15 ~ 30 parts, the fiber of 1 ~ 2 part, the coral sand of 500 ~ 800 parts and 250 ~ 340 parts shaping in Standard Module.
2. seawater according to claim 1 mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: described cement cementitious material is the one in silicate cement, ordinary Portland cement or slag cement; Aluminosulfate cement adopts early-strength type aluminosulfate cement.
3. seawater according to claim 1 mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: the sodium polyacrylate spherical water-absorbent resin that described artificial aggregate is 1 ~ 2.5mm by diameter fully absorbs after seawater expands and obtains.
4. seawater according to claim 1 mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: described high efficiency water reducing agent is the one in polysulfonate, polycarboxylate or melamine sulfonate.
5. seawater according to claim 1 mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: described fiber adopts 9 ~ 18mm polypropylene fibre or alkali resistant glass fiber.
6. the seawater according to any one of claim 1 to 5 mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: the concrete segment folding strength made is greater than 2.5MPa, and ultimate compression strength is 15.2 ~ 25MPa, unit dry weight 1740 ~ 1991kg/m
3.
7. seawater mixes a preparation method for foster coral sand artificial aggregate concrete segment, it is characterized in that, comprises the following steps:
1) on islands and reefs, open up prefabricated place, sodium polyacrylate spherical water-absorbent resin loaded permeable bag and put into seawater nearby and absorb seawater, making volumetric expansion prepare 150 ~ 350 parts of artificial aggregates, simultaneously in situ recovery islands and reefs coral sand screen out foreign material;
2) by the cement cementitious material of 500 ~ 750 parts, the aluminosulfate cement of 50 ~ 100 parts, the high efficiency water reducing agent of 15 ~ 30 parts, the fiber of 1 ~ 2 part, the coral sand mix and blend of 500 ~ 800 parts, the seawater of 250 ~ 340 parts is added while stirring, and stir, add 150 ~ 350 parts of artificial aggregates again, continue to stir into ready mixed concrete, vibration compacting after finally pouring into the mold, the demoulding after 3 days, spray seawater maintenance more than 7 days, cyclic production like this, obtains seawater and mixes foster coral sand artificial aggregate concrete segment.
8. seawater according to claim 7 mixes the preparation method of foster coral sand artificial aggregate concrete segment, it is characterized in that: described step 2) in, water reducer adopts the one in polysulfonate, polycarboxylate or melamine sulfonate; Fiber adopts 9 ~ 18mm polypropylene fibre or alkali resistant glass fiber.
9. seawater according to claim 7 mixes the preparation method of foster coral sand artificial aggregate concrete segment, it is characterized in that: described step 2) in, adopt artificial or mechanical system to stir into ready mixed concrete, then adopt artificial or mechanical system vibration compacting after being poured into Standard Module.
10. the seawater prepared by method described in claim 7 to 9 any one mixes foster coral sand artificial aggregate concrete segment, it is characterized in that: the concrete segment folding strength made is greater than 2.5MPa, ultimate compression strength is 15.2 ~ 25MPa, unit dry weight 1740 ~ 1991kg/m
3.
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Cited By (14)
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|---|---|---|---|---|
| CN105837142A (en) * | 2016-04-21 | 2016-08-10 | 武汉理工大学 | Micro-expansive coral sand concrete and preparation method thereof |
| CN105936593A (en) * | 2016-04-28 | 2016-09-14 | 中冶建筑研究总院有限公司 | Seawater coral aggregate concrete |
| CN106186841A (en) * | 2016-06-30 | 2016-12-07 | 合肥光聚财建筑装饰工程有限公司 | A kind of Green environmental-protection building ornament materials based on coral reef |
| CN106396531A (en) * | 2015-12-30 | 2017-02-15 | 中冶建筑研究总院有限公司 | Salt-fixing agent for seawater coral aggregate concrete |
| CN106503372A (en) * | 2016-10-28 | 2017-03-15 | 中国人民解放军后勤工程学院 | Determine seawater aggregate concrete logarithmic strain rate calculation of effect machine dynamic emulation method |
| CN107986650A (en) * | 2017-11-30 | 2018-05-04 | 嘉华特种水泥股份有限公司 | A kind of concrete gel material |
| CN109053066A (en) * | 2018-08-06 | 2018-12-21 | 长安大学 | A kind of coral sand heat preservation noise reduction plate and preparation method thereof |
| CN110041034A (en) * | 2019-04-19 | 2019-07-23 | 中国人民解放军陆军勤务学院 | A kind of Novel free steam pressure concrete brick and its binder |
| CN111253125A (en) * | 2019-12-02 | 2020-06-09 | 哈尔滨工程大学 | Green concrete for inducing adhesion of marine periphyton and preparation method thereof |
| CN111499292A (en) * | 2019-12-02 | 2020-08-07 | 哈尔滨工程大学 | Oyster attachment base of fiber reinforced cement concrete and preparation method thereof |
| CN112125634A (en) * | 2020-11-25 | 2020-12-25 | 北京仁创科技集团有限公司 | Coral sand permeable material and preparation method thereof |
| WO2022028038A1 (en) * | 2020-08-04 | 2022-02-10 | 海南大学 | Novel embankment construction method using calcareous sand concrete |
| CN114890725A (en) * | 2022-05-20 | 2022-08-12 | 东南大学 | Phase-change temperature-control coral sand face brick and preparation method thereof |
| CN115745533A (en) * | 2022-11-25 | 2023-03-07 | 台州市黄岩超鸿新材料科技有限公司 | High-strength anti-cracking environment-friendly concrete |
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| CN106396531A (en) * | 2015-12-30 | 2017-02-15 | 中冶建筑研究总院有限公司 | Salt-fixing agent for seawater coral aggregate concrete |
| CN106396531B (en) * | 2015-12-30 | 2018-11-13 | 中冶建筑研究总院有限公司 | A kind of solid salt agent for seawater coral aggregate concrete |
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| CN105936593A (en) * | 2016-04-28 | 2016-09-14 | 中冶建筑研究总院有限公司 | Seawater coral aggregate concrete |
| CN106186841A (en) * | 2016-06-30 | 2016-12-07 | 合肥光聚财建筑装饰工程有限公司 | A kind of Green environmental-protection building ornament materials based on coral reef |
| CN106503372A (en) * | 2016-10-28 | 2017-03-15 | 中国人民解放军后勤工程学院 | Determine seawater aggregate concrete logarithmic strain rate calculation of effect machine dynamic emulation method |
| CN107986650A (en) * | 2017-11-30 | 2018-05-04 | 嘉华特种水泥股份有限公司 | A kind of concrete gel material |
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| CN109053066B (en) * | 2018-08-06 | 2021-03-02 | 长安大学 | Coral sand heat-preservation noise-reduction plate and preparation method thereof |
| CN109053066A (en) * | 2018-08-06 | 2018-12-21 | 长安大学 | A kind of coral sand heat preservation noise reduction plate and preparation method thereof |
| CN110041034A (en) * | 2019-04-19 | 2019-07-23 | 中国人民解放军陆军勤务学院 | A kind of Novel free steam pressure concrete brick and its binder |
| CN111499292A (en) * | 2019-12-02 | 2020-08-07 | 哈尔滨工程大学 | Oyster attachment base of fiber reinforced cement concrete and preparation method thereof |
| CN111253125A (en) * | 2019-12-02 | 2020-06-09 | 哈尔滨工程大学 | Green concrete for inducing adhesion of marine periphyton and preparation method thereof |
| CN111253125B (en) * | 2019-12-02 | 2022-01-14 | 哈尔滨工程大学 | Green concrete for inducing adhesion of marine periphyton and preparation method thereof |
| CN111499292B (en) * | 2019-12-02 | 2022-01-14 | 哈尔滨工程大学 | Oyster attachment base of fiber reinforced cement concrete and preparation method thereof |
| WO2022028038A1 (en) * | 2020-08-04 | 2022-02-10 | 海南大学 | Novel embankment construction method using calcareous sand concrete |
| CN112125634A (en) * | 2020-11-25 | 2020-12-25 | 北京仁创科技集团有限公司 | Coral sand permeable material and preparation method thereof |
| CN112125634B (en) * | 2020-11-25 | 2021-03-09 | 北京仁创科技集团有限公司 | Coral sand permeable material and preparation method thereof |
| CN114890725A (en) * | 2022-05-20 | 2022-08-12 | 东南大学 | Phase-change temperature-control coral sand face brick and preparation method thereof |
| CN115745533A (en) * | 2022-11-25 | 2023-03-07 | 台州市黄岩超鸿新材料科技有限公司 | High-strength anti-cracking environment-friendly concrete |
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