CN104150838B - A kind of sisal fiber strengthens coral concrete and preparation method thereof - Google Patents
A kind of sisal fiber strengthens coral concrete and preparation method thereof Download PDFInfo
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- CN104150838B CN104150838B CN201410388708.9A CN201410388708A CN104150838B CN 104150838 B CN104150838 B CN 104150838B CN 201410388708 A CN201410388708 A CN 201410388708A CN 104150838 B CN104150838 B CN 104150838B
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Abstract
The invention discloses a kind of sisal fiber and strengthen coral concrete and preparation method thereof. This concrete is made up of coral concrete and sisal fiber; 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, cement and silicon ash quality sum are 450 kilograms. Cement, silicon ash, sand and coral are poured in mixer, stirred, add sisal fiber, dry mixing is even, then adds seawater, stirs, and the sisal fiber obtaining finally strengthens coral concrete. Concrete splitting tensile strength of the present invention, High anti bending strength, and there are energy-conserving and environment-protective, cost is low, thermal conductivity is low, without features such as electromagnetic interference.
Description
Technical field
The invention belongs to architecture engineering material technical field, particularly a kind of sisal fiber 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 flood bank, island and coastal area. Do not destroying under the prerequisite of local environment, replacing coarse aggregate based on coral reef, seawater replaces the formulated coral concrete of fresh water to be of great immediate significance in civil engineering 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 fiber, 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 reinforcing material. 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 fibres, but both there is no the advantage of green, environmental protection, economy, but not green building material. Sisal fiber has cheapness, light weight, can decompose under field conditions (factors) and free of contamination advantage. In addition, sisal fiber also has higher intensity and feature corrosion-resistant, acid and alkali-resistance, particularly its vascular bundle hollow structure, stress is concentrated better and alleviated, and its development prospect will be more and more extensive.
Sisal fiber mixes with a certain amount of cement coral concrete, to improve the service behaviour 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 fiber strengthens coral concrete mechanical property test result and shows, the DeGrain that mixes the compression strength to improving coral concrete of sisal fiber, but have remarkable effect for improving coral concrete tensile splitting strength and rupture strength. In addition, sisal fiber 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 fiber strengthens concrete corrosion resistance, finds Ca (OH)2At inner chamber and the hole intercrystalline of sisal fiber, sisal fiber is become fragile, lose gradually the effect of enhancing; And mixing of silicon ash can effectively reduce Ca (OH)2Generation, improve sisal fiber and strengthen the durability of coral concrete; Volume is that 20%～30% silicon ash can effectively suppress aging in silicate cement cement mortar of sisal fiber. Above thinking yet there are no bibliographical information.
Summary of the invention
The object of this invention is to provide a kind of sisal fiber and strengthen coral concrete and preparation method thereof.
Technical scheme of the present invention:
A kind of sisal fiber strengthens coral concrete, is made up of coral concrete and sisal fiber, and the volume percent content of two kinds of components is: 99.72 ~ 99.79% coral concrete and 0.21 ~ 0.28% sisal fiber, both percent by volume 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 Portland cement of label 42.5; Silicon is grey for particle size is 0.1 micron, and specific area is 28 ± 0.1m2The silicon ash of/g; Sand is natural river sand; Coral is common broken stone type coral reef.
The length of described sisal fiber is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas.
Above-mentioned sisal fiber 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 fiber dry mixing that mixer adds step (1) to take after stirring into, the seawater that finally adds step (1) to take stirs, and makes sisal fiber and strengthens coral concrete.
Compared with prior art, the present invention has following beneficial effect: the present invention utilizes sisal fiber to strengthen coral concrete, improves tensile splitting strength, the rupture strength of coral concrete; Meanwhile, the present invention makes sisal fiber 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 Binder Materials after being substituted by silicon ash, reduces Ca (OH)2Growing amount, improve the corrosion resistance of sisal fiber.
Detailed description of the invention
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 fiber strengthens coral concrete, is made up of coral concrete and sisal fiber, and the volume percent content of two kinds of components is: 99.79% coral concrete and 0.21% sisal fiber; The ratio of mud (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fiber 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 Portland cement of label 42.5; Sand is natural river sand; Coral is common broken stone type coral reef.
The length of described sisal fiber is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 3 kilograms.
Above-mentioned sisal fiber 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 mixer into and after stirring 60 seconds, added sisal fiber 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 fiber and strengthens coral concrete.
The unit weight that sisal fiber prepared by the present embodiment strengthens coral concrete is 2180kg/m3; After 28 days, it is basic identical with the compression strength of the plain coral concrete of identical match ratio that the sisal fiber of the present embodiment strengthens coral concrete; With the plain coral concrete comparison of identical match ratio, tensile splitting strength promotes approximately 16%; With the plain coral concrete comparison of identical match ratio, rupture strength promotes 48.5%.
Embodiment 2:
A kind of sisal fiber strengthens coral concrete, formed by coral concrete and sisal fiber, the volume percent content of two kinds of components is: 99.72% coral concrete and 0.28% sisal fiber, the ratio of mud (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fiber 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 Portland cement of label 42.5; Sand is natural river sand; Coral is common broken stone type coral reef.
The length of described sisal fiber is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 4.5 kilograms.
Above-mentioned sisal fiber 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 mixer into and after stirring 60 seconds, added sisal fiber 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 fiber and strengthens coral concrete.
The unit weight that sisal fiber prepared by the present embodiment strengthens coral concrete is 2180kg/m3; After 28 days, it is basic identical with the compression strength of the plain coral concrete of identical match ratio that the sisal fiber of the present embodiment strengthens coral concrete; With the plain coral concrete comparison of identical match ratio, tensile splitting strength promotes approximately 16.9%; With the plain coral concrete comparison of identical match ratio, rupture strength promotes 43.4%.
Embodiment 3:
A kind of sisal fiber strengthens coral concrete, formed by coral concrete and sisal fiber, the volume percent content of two kinds of components is: 99.72% coral concrete and 0.28% sisal fiber, the ratio of mud (the water weight in every cubic metre of coral concrete and the ratio of cement weight) that this sisal fiber 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 Portland cement of label 42.5; Silicon is grey for particle size is 0.1 micron, and specific area is 28m2The silicon ash of/g; Sand is natural river sand; Coral is common broken stone type coral reef.
The length of described sisal fiber is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas, and quality is 4.5 kilograms.
Above-mentioned sisal fiber 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 mixer into and after stirring 60 seconds, added sisal fiber 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 fiber and strengthens coral concrete.
The unit weight that sisal fiber prepared by the present embodiment strengthens coral concrete is 2180kg/m3; After 28 days, the sisal fiber of the present embodiment strengthens coral concrete to be compared with the tensile splitting strength of the plain coral concrete of identical match ratio, and in the time that silicon ash volume is 25%, amplification is 8.9%; In the time that silicon ash volume is 25%, sisal fiber 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 fiber in sisal fiber enhancing coral concrete with 25% the grey replacement of silicon cement.
Claims (2)
1. a sisal fiber strengthens coral concrete, it is characterized in that this sisal fiber strengthens coral concrete and is made up of coral concrete and sisal fiber, the volume percent content of two kinds of components is: 99.72 ~ 99.79% coral concrete and 0.21 ~ 0.28% sisal fiber, and both percent by volume 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 Portland cement of label 42.5; Silicon is grey for particle size is 0.1 micron, and specific area is 28 ± 0.1m2The silicon ash of/g; Sand is natural river sand; Coral is common broken stone type coral reef;
The length of described sisal fiber is 10 ± 2 millimeters, and tensile strength is 500 ~ 700 MPas.
2. sisal fiber 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 fiber dry mixing that mixer adds step (1) to take after stirring into, the seawater that finally adds step (1) to take stirs, and makes sisal fiber and strengthens coral concrete.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| CN111704405B (en) * | 2020-05-22 | 2022-05-31 | 桂林理工大学 | Sisal hemp nano cellulose ultra-high toughness concrete and preparation method thereof |
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| "植物纤维增强的水泥复合材料";拉马钱德兰等;《混凝土科学有关近代研究的专论》;北京：中国建筑工业出版社;19860930;第233页 * |
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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 |