CN104150838A - Sisal fiber enhanced coral concrete and preparation method thereof - Google Patents
Sisal fiber enhanced coral concrete and preparation method thereof Download PDFInfo
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- CN104150838A CN104150838A CN201410388708.9A CN201410388708A CN104150838A CN 104150838 A CN104150838 A CN 104150838A CN 201410388708 A CN201410388708 A CN 201410388708A CN 104150838 A CN104150838 A CN 104150838A
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Abstract
The invention discloses sisal fiber enhanced coral concrete and a preparation method thereof. The concrete consists of coral concrete and sisal fibers, wherein the coral concrete is in the level C30, and each cubic meter of the coral concrete consists of 315-360 kilograms of cement, 90-135 kilograms of silica fume, 830 kilograms of sand, 716 kilograms of coral and 180 kilograms of seawater; the mass sum of the cement and the silica fume is 450 kilograms. The sisal fiber enhanced coral concrete is prepared by pouring cement, silica fume, sand and coral into an agitating machine for agitating, adding the sisal fibers for uniform dry agitating, and then adding the seawater for agitating. The concrete disclosed by the invention is high in splitting tensile strength and breaking strength, and has the characteristics of energy conservation, environment friendliness, low manufacturing cost, low heat conduction property, zero electromagnetic interference and the like.
Description
Technical field
The invention belongs to architecture engineering material technical field, particularly a kind of sisal fibers strengthens coral concrete and preparation method thereof.
Background technology
Coral concrete has broad application prospects in the construction of island, can be applicable to highway, airport and the sundry item of floodwall, island and coastland.Do not destroying under the prerequisite of local environment, replacing coarse aggregate based on karang, seawater replaces the formulated coral concrete of fresh water to be of great immediate significance in civil engineering work and military engineering.In order to improve intensity and the toughness of coral concrete, with reference to mixing fiber in the example of normal concrete, in coral concrete, mix sisal fibers, improve the basic mechanical performance of coral concrete with this.
Fiber reinforcement coral concrete is taking coral concrete as matrix, and fiber is the general name of the made cement-base composite material of strongthener.Because fiber can suppress carrying out of crack well, fiber reinforcement coral concrete is the effective ways that improve coral concrete stress performance.
The fiber of admixture in concrete in the past, great majority are artificial fiber and mineral fibre, but both there is no the advantage of green, environmental protection, economy, but not green building material.Sisal fibers has cheapness, light weight, can decompose under field conditions (factors) and free of contamination advantage.In addition, sisal fibers also has higher intensity and feature corrosion-resistant, acid and alkali-resistance, and particularly its vascular bundle hollow structure, alleviates stress concentration better, and its development prospect will be more and more extensive.
Sisal fibers mixes with a certain amount of cement coral concrete, to improve the serviceability of newly mixing coral concrete, be embodied in the minimizing of newly mixing coral concrete bleeding rate and the slump, air content also improves, sisal fibers strengthens coral concrete mechanical property test result and shows, the DeGrain that mixes the ultimate compression strength to improving coral concrete of sisal fibers, but have remarkable effect for improving coral concrete tensile splitting strength and folding strength.In addition, sisal fibers can also suppress the contraction of coral concrete effectively, and the impact of particularly shrinking for early stage coral concrete is more remarkable.
Research sisal fibers strengthens concrete resistance to fouling, finds Ca (OH)
2at inner chamber and the hole intercrystalline of sisal fibers, sisal fibers is become fragile, lose gradually the effect of enhancing; And mixing of silicon ash can effectively reduce Ca (OH)
2generation, improve sisal fibers and strengthen the weather resistance of coral concrete; Volume is that 20%～30% silicon ash can effectively suppress aging in silicate cement cement mortar of sisal fibers.Above thinking yet there are no bibliographical information.
Summary of the invention
The object of this invention is to provide a kind of sisal fibers and strengthen coral concrete and preparation method thereof.
Technical scheme of the present invention:
A kind of sisal fibers strengthens coral concrete, is made up of coral concrete and sisal fibers, and the volume percent content of two kinds of components is: 99.72 ~ 99.79% coral concrete and 0.21 ~ 0.28% sisal fibers, both volume percent sums are 100%.
Described coral concrete is the coral concrete of C30 grade, and its component of every cubic metre is: 315 ~ 360 kilograms of cement, 90 ~ 135 kilograms of silicon ashes, 830 kg sand, 716 kilograms of corals and 180 kilograms of seawater, and cement and silicon ash quality sum are 450 kilograms; Wherein: cement is the ordinary Portland cement of label 42.5; Silicon is grey for size is 0.1 micron, and specific surface area is 28 ± 0.1m
2the silicon ash of/g; Sand is natural river sand; Coral is common broken stone type karang.
The length of described sisal fibers is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas.
Above-mentioned sisal fibers strengthens the preparation method of coral concrete, and concrete steps are:
(1) require to take all raw materials according to said components, for subsequent use.
(2) it is even that cement, silicon ash, sand and coral step (1) being taken poured sisal fibers dry mixing that stirrer adds step (1) to take after stirring into, the seawater that finally adds step (1) to take stirs, and makes sisal fibers and strengthens coral concrete.
Compared with prior art, the present invention has following beneficial effect: the present invention utilizes sisal fibers to strengthen coral concrete, improves tensile splitting strength, the folding strength of coral concrete; Meanwhile, the present invention makes sisal fibers strengthens that coral concrete material has energy-conserving and environment-protective, cost is low, thermal conductivity is low, without features such as electromagnetic interference; In addition, mixing of silicon ash, can significantly improve the impermeability of coral concrete, intensity, and chemical resistance, in coral concrete, part of cement can reduce the alkalescence of gelling material after being substituted by silicon ash, reduces Ca (OH)
2growing amount, improve the erosion resistance of sisal fibers.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples contribute to those skilled in the art further to understand the present invention, but do not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
embodiment 1:
A kind of sisal fibers strengthens coral concrete, is made up of coral concrete and sisal fibers, and the volume percent content of two kinds of components is: 99.79% coral concrete and 0.21% sisal fibers; The water cement ratio (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fibers strengthens coral concrete is 0.40.
The component that described coral concrete is every cubic metre is: 450 kilograms of cement, 830 kg sand, 716 kilograms of corals and 180 kilograms of seawater; Wherein: cement is the ordinary Portland cement of label 42.5; Sand is natural river sand; Coral is common broken stone type karang.
The length of described sisal fibers is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 3 kilograms.
Above-mentioned sisal fibers strengthens the preparation method of coral concrete, and concrete steps are:
(1) require to take all raw materials according to said components, for subsequent use.
(2) cement, sand and coral step (1) being taken poured stirrer into and after stirring 60 seconds, added sisal fibers the dry mixing that step (1) takes it to be mixed in 30 seconds, the seawater that finally adds step (1) to take stirs, and makes sisal fibers and strengthens coral concrete.
The unit weight that sisal fibers prepared by the present embodiment strengthens coral concrete is 2180kg/m
3; After 28 days, it is basic identical with the ultimate compression strength of the plain coral concrete of identical proportioning that the sisal fibers of the present embodiment strengthens coral concrete; With the plain coral concrete comparison of identical proportioning, tensile splitting strength promotes approximately 16%; With the plain coral concrete comparison of identical proportioning, folding strength promotes 48.5%.
embodiment 2:
A kind of sisal fibers strengthens coral concrete, formed by coral concrete and sisal fibers, the volume percent content of two kinds of components is: 99.72% coral concrete and 0.28% sisal fibers, the water cement ratio (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fibers strengthens coral concrete is 0.40.
The component that described coral concrete is every cubic metre is: 450 kilograms of cement, 830 kg sand, 716 kilograms of corals and 180 kilograms of seawater; Wherein: cement is the ordinary Portland cement of label 42.5; Sand is natural river sand; Coral is common broken stone type karang.
The length of described sisal fibers is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 4.5 kilograms.
Above-mentioned sisal fibers strengthens the preparation method of coral concrete, and concrete steps are:
(1) require to take all raw materials according to said components, for subsequent use.
(2) cement, sand and coral step (1) being taken poured stirrer into and after stirring 60 seconds, added sisal fibers the dry mixing that step (1) takes it to be mixed in 30 seconds, the seawater that finally adds step (1) to take stirs, and makes sisal fibers and strengthens coral concrete.
The unit weight that sisal fibers prepared by the present embodiment strengthens coral concrete is 2180kg/m
3; After 28 days, it is basic identical with the ultimate compression strength of the plain coral concrete of identical proportioning that the sisal fibers of the present embodiment strengthens coral concrete; With the plain coral concrete comparison of identical proportioning, tensile splitting strength promotes approximately 16.9%; With the plain coral concrete comparison of identical proportioning, folding strength promotes 43.4%.
embodiment 3:
A kind of sisal fibers strengthens coral concrete, formed by coral concrete and sisal fibers, the volume percent content of two kinds of components is: 99.72% coral concrete and 0.28% sisal fibers, the water cement ratio (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fibers strengthens coral concrete is 0.40.
Described coral concrete is the coral concrete of C30 grade, and its component of every cubic metre is: 337.5 kilograms of cement, 112.5 kilograms of silicon ashes, 830 kg sand, 716 kilograms of corals and 180 kilograms of seawater; Wherein: cement is the ordinary Portland cement of label 42.5; Silicon is grey for size is 0.1 micron, and specific surface area is 28m
2the silicon ash of/g; Sand is natural river sand; Coral is common broken stone type karang.
The length of described sisal fibers is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 4.5 kilograms.
Above-mentioned sisal fibers strengthens the preparation method of coral concrete, and concrete steps are:
(1) require to take all raw materials according to said components, for subsequent use.
(2) cement, silicon ash, sand and coral step (1) being taken poured stirrer into and after stirring 60 seconds, added sisal fibers the dry mixing that step (1) takes it to be mixed in 30 seconds, the seawater that finally adds step (1) to take stirs, and makes sisal fibers and strengthens coral concrete.
The unit weight that sisal fibers prepared by the present embodiment strengthens coral concrete is 2180kg/m
3; After 28 days, the sisal fibers of the present embodiment strengthens coral concrete to be compared with the tensile splitting strength of the plain coral concrete of identical proportioning, and in the time that silicon ash volume is 25%, amplification is 8.9%; In the time that silicon ash volume is 25%, sisal fibers after drying and watering cycle is aging strengthen coral concrete tensile splitting strength with aging before tensile splitting strength be more or less the same, illustrate and can effectively suppress the aging of sisal fibers in sisal fibers enhancing coral concrete with 25% the grey replacement of silicon cement.
Claims (2)
1. a sisal fibers strengthens coral concrete, it is characterized in that this sisal fibers strengthens coral concrete and is made up of coral concrete and sisal fibers, the volume percent content of two kinds of components is: 99.72 ~ 99.79% coral concrete and 0.21 ~ 0.28% sisal fibers, and both volume percent sums are 100%;
Described coral concrete is the coral concrete of C30 grade, and its component of every cubic metre is: 315 ~ 360 kilograms of cement, 90 ~ 135 kilograms of silicon ashes, 830 kg sand, 716 kilograms of corals and 180 kilograms of seawater, and cement and silicon ash quality sum are 450 kilograms; Wherein: cement is the ordinary Portland cement of label 42.5; Silicon is grey for size is 0.1 micron, and specific surface area is 28 ± 0.1m
2the silicon ash of/g; Sand is natural river sand; Coral is common broken stone type karang;
The length of described sisal fibers is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas.
2. sisal fibers strengthens the preparation method of coral concrete as claimed in claim 1, it is characterized in that concrete steps are:
(1) require to take all raw materials according to the component of claim 1, for subsequent use;
(2) it is even that cement, silicon ash, sand and coral step (1) being taken poured sisal fibers dry mixing that stirrer adds step (1) to take after stirring into, the seawater that finally adds step (1) to take stirs, and makes sisal fibers and strengthens coral concrete.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106904870A (en) * | 2017-01-17 | 2017-06-30 | 华南理工大学 | A kind of natural fiber reinforced epoxy base concrete and preparation method and application |
| CN108164205A (en) * | 2018-01-11 | 2018-06-15 | 宁波丰尔泰建材科技有限公司 | A kind of antimildew and antibacterial ancient painted pottery plate and preparation method thereof |
| CN108358557A (en) * | 2018-03-18 | 2018-08-03 | 桂林理工大学 | A kind of preparation method of the compound sisal fiber coral concrete of graphene |
| CN110171940A (en) * | 2019-04-11 | 2019-08-27 | 武汉理工大学 | A kind of coral sand admixture and its preparation method and application |
| CN110593044A (en) * | 2019-10-12 | 2019-12-20 | 福州大学 | Sisal fiber reinforced cement-based composite material pavement road |
| CN111704405A (en) * | 2020-05-22 | 2020-09-25 | 桂林理工大学 | Sisal hemp nano cellulose ultra-high toughness concrete and preparation method thereof |
-
2014
- 2014-08-09 CN CN201410388708.9A patent/CN104150838B/en active Active
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| 拉马钱德兰等: ""植物纤维增强的水泥复合材料"", 《混凝土科学有关近代研究的专论》, 30 September 1986 (1986-09-30), pages 233 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106904870A (en) * | 2017-01-17 | 2017-06-30 | 华南理工大学 | A kind of natural fiber reinforced epoxy base concrete and preparation method and application |
| CN108164205A (en) * | 2018-01-11 | 2018-06-15 | 宁波丰尔泰建材科技有限公司 | A kind of antimildew and antibacterial ancient painted pottery plate and preparation method thereof |
| CN108164205B (en) * | 2018-01-11 | 2019-10-11 | 宁波丰尔泰建材科技有限公司 | A kind of antimildew and antibacterial ancient painted pottery plate and preparation method thereof |
| CN108358557A (en) * | 2018-03-18 | 2018-08-03 | 桂林理工大学 | A kind of preparation method of the compound sisal fiber coral concrete of graphene |
| CN110171940A (en) * | 2019-04-11 | 2019-08-27 | 武汉理工大学 | A kind of coral sand admixture and its preparation method and application |
| CN110171940B (en) * | 2019-04-11 | 2021-09-14 | 武汉理工大学 | Coral sand admixture and preparation method and application thereof |
| CN110593044A (en) * | 2019-10-12 | 2019-12-20 | 福州大学 | Sisal fiber reinforced cement-based composite material pavement road |
| CN111704405A (en) * | 2020-05-22 | 2020-09-25 | 桂林理工大学 | Sisal hemp nano cellulose ultra-high toughness concrete and preparation method thereof |
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| CN104150838B (en) | 2016-05-18 |
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Application publication date: 20141119 Assignee: Guilin Science and Engineering Architectural Planning and Design Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000239 Denomination of invention: Sisal fiber reinforced coral concrete and its preparation method Granted publication date: 20160518 License type: Common License Record date: 20221206 |
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