CN105541208A - Basalt fiber reinforced cement based material and preparation method therefor - Google Patents
Basalt fiber reinforced cement based material and preparation method therefor Download PDFInfo
- Publication number
- CN105541208A CN105541208A CN201510966814.5A CN201510966814A CN105541208A CN 105541208 A CN105541208 A CN 105541208A CN 201510966814 A CN201510966814 A CN 201510966814A CN 105541208 A CN105541208 A CN 105541208A
- Authority
- CN
- China
- Prior art keywords
- basalt fibre
- cement
- mix
- mixture
- tetraethoxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1066—Oxides, Hydroxides
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to cement-based materials and particularly discloses a basalt fiber reinforced cement based material and a preparation method therefor. The basalt fiber reinforced cement based material contains the following ingredients: 400-800kg/m<3> of cement, 800-1,600kg/m<3> of fine aggregate, 20-40kg/m<3> of ethyl orthosilicate, 10-40kg/m<3> of efficient polycarboxylic acid water reducing agent, 0.01-0.05 kg/m<3> of setting retarder and 3.0-8.0% (volume percent) of basalt fibers. According to the basalt fiber reinforced cement based material and the preparation method therefor, through optimizing a formula and improving the preparation method, the porosity of the basalt fiber reinforced cement based material is lowered, the compactness of the material is improved, meanwhile, the property of an interface layer between the basalt fibers and a cement bonding material is improved, and the interfacial bonding strength is improved; and the structure and mechanical properties of the basalt fiber reinforced cement based material disclosed by the invention are improved relatively greatly, and the compression strength, folding strength and toughness are improved greatly.
Description
Technical field
The present invention relates to cement-based material, be specifically related to a kind of basalt fibre refinforced cement sill and preparation method thereof.
Background technology
Cement-based material has the series of advantages such as intensity is high, good endurance, cost are low, but, it is large that cement-based material self also exists shrinkage strain, the very important shortcoming such as fragility is easy to crack greatly, especially the novel high-performance cement-based material that chemical admixture is developed is mixed, although intensity is improved occur the problems such as poor toughness, crack, drying shrinkage and fragility are large simultaneously.Before, improve cement-based material performance study by interpolation fiber more, adding basalt fibre is one of common method.Basalt fibre is that it has the advantages such as tensile strength is high, Young's modulus is large with the ceramic of natural basalt ore by a kind of pure natural of high-temperature fusion, wire drawing.Basalticly to add, a kind of network system of uniform three-dimensional random distribution can be gone in cement-based material intrinsic silicon, generation and the expansion in base shrinks crack can be prevented, improve the over-all properties of material.
In prior art, patent CN103771795A discloses a kind of basalt fibre and strengthens cracking resistance facing mortar, this mortar cement, quartz sand and basalt chopped fiber mix according to a certain percentage, have the advantages such as cracking resistance, weather-proof, good ultraviolet resistance, uniform color are lasting.Patent CN103435305A discloses a kind of Basalt fiber concrete and preparation method thereof, mixed according to a certain percentage by cement, sand, stone, active admixture, short basalt fiber, other staple fibres, water, CTF synergistic agent and water reducer, effectively improve concrete toughness, anti crack performance, frost resistance and shock resistance.But, along with inserting of basalt fibre or other fibers, seriously change the packed structures principle of cement-based material, adds somewhat to the porosity of cement-based material, can be there is an interfacial layer in fiber and cement bond material simultaneously, in described interfacial layer, the interface binding intensity of the two is usually lower, therefore it is not obvious in the reinforced effects being added in basic mechanical performance of basalt fibre, even cause the reduction of intensity, the embodiment of concentrating is exactly that to add the cement-based material fragility of basalt fibre large, and folding strength is lower.
In order to make up above-mentioned deficiency, need badly and add the structure properties that other materials improve material, promote the degree of compactness of material, increase basalt fibre and cement bond material interface cohesive strength, thus the performance that the fragility improving material is large, improve its resistance to compression, folding strength.
Summary of the invention
The object of the invention is exploitation and a kind ofly there is higher degree of compactness, good toughness, basalt fibre refinforced cement sill that pressure-proof and snap-resistent intensity is high and preparation method thereof.
Above-mentioned purpose is achieved through the following technical solutions: a kind of basalt fibre refinforced cement sill, its raw material comprises following component: cement 400 ~ 800kg/m
3, fine aggregate 800 ~ 1600kg/m
3, tetraethoxy 20 ~ 40kg/m
3, High-efficiency polycarboxylic acid water reducer 10 ~ 40kg/m
3, retardant 0.01 ~ 0.05kg/m
3, basalt fibre 3.0% ~ 8.0% (volume ratio).Due to adding of basalt fibre, the porosity of cement-based material increases, near the junction of especially basalt fibre and cement-based gelling material, usually these holes are extremely little, traditional subparticle such as silicon ash can not play micro-packing effect completely, and the nanometer silicon dioxide particle of teos hydrolysis has nano-grade size, micro-packing effect can be played completely; Experiment shows, after adding tetraethoxy, hardening of cement slurry inner void tails off, and ettringite and basalt fibre mutually overlap adhesion each other, intersect to form and form intensive good body.Contriver is found by great many of experiments, especially first allow the hydrating solution of tetraethoxy and basalt fibre surface contact when teos hydrolysis nanometer silicon dioxide particle there is splendid interface filling effect.Simultaneously, the nanometer silicon dioxide particle of teos hydrolysis is dispersed in cement, for hydrated cementitious system plays the effect of nucleus, formation take nanometer silicon dioxide particle as the agglomerate gelling thing of core, improve hydrated product distributing homogeneity, interface transition layer reasonable layout, therefore the basalt fibre refinforced cement sill structure adding tetraethoxy is finer and close.Secondly, basalt fibre surface is in unreactiveness, poor with the interfacial combined function of cement cementitious material, and the nanometer silicon dioxide particle of teos hydrolysis has more activity hydroxy, its deposition basalt fibre surface, these active groups are easy to cement cementitious material generation chemical reaction, firmly combined by the form of chemical bond, bonding force between basalt fibre and cement cementitious material matrix is strengthened greatly, improve interface intermolecular forces, and then improve the interface binding intensity of interfacial layer, increase the toughness of basalt fibre refinforced cement sill, folding strength significantly increases.Again, because basalt fibre is perishable under alkaline environment, and cement-based material, pH is generally more than 12, and under this condition, in basalt fibre, Network former element oozes out, and starts successively to corrode; The nanometer silicon dioxide particle of teos hydrolysis is attached to basalt fibre surface, can avoid the alkaline corrosion of basalt fibre, improves the alkali corrosion resistance performance of basalt fibre or extends its work-ing life under alkaline environment.
In addition, due to and the dispersion system of the nanometer silicon dioxide particle of teos hydrolysis has larger specific surface area, surface energy is very large, causes agglomerate grain, and then impact does not even reach technique effect of the present invention.And the adding not only can play and reduce the effect of water cement ratio of water reducer, particle surface is with same electric charge simultaneously, form electrostatic repulsion, particle is impelled mutually to disperse, especially High-efficiency polycarboxylic acid water reducer, its molecule side chain provides space steric effect, suppresses or alleviate nanometer silicon dioxide particle to reunite.
As preferably, further technical scheme is: described basalt fibre refinforced cement sill, its raw material comprises following component: cement 600 ~ 700kg/m
3, fine aggregate 1300 ~ 1500kg/m
3, tetraethoxy 25 ~ 35kg/m
3, High-efficiency polycarboxylic acid water reducer 20 ~ 30kg/m
3, retardant 0.02 ~ 0.04kg/m
3, basalt fibre 4.5% ~ 6.5% (volume ratio).
Further technical scheme is: described basalt fibre refinforced cement sill, its raw material comprises following component: cement 650kg/m
3, fine aggregate 1450kg/m
3, tetraethoxy 30kg/m
3, High-efficiency polycarboxylic acid water reducer 25kg/m
3, retardant 0.03kg/m
3, basalt fibre 5.0% (volume ratio).
Further technical scheme is: described basalt fibre refinforced cement sill, its raw material also comprises active mineral admixture 90 ~ 180kg/m
3.Appropriate admixture active mineral admixture, as silica flour, slag micropowder, flyash etc., reduces the large pore of cement-based material, increases degree of compactness, increases substantially ultimate compression strength and the weather resistance of basalt fibre refinforced cement sill.
Further technical scheme is: described active mineral admixture is one or both in flyash and slag.Research shows, adding coal ash can optimize the pore structure of cement and basalt fibre, improves the volume stability of material structure, intensity and permeability resistance; After admixture slag, wear resistance of the present invention increases, and porosity diminishes, and structure is finer and close.
Further technical scheme is: described basalt fibre refinforced cement sill, its raw material also comprises silane coupling agent 1.0 ~ 2.0kg/m
3.Silane coupling agent can with the active group generation coupled action of the nanometer silicon dioxide particle be deposited on basalt fibre, then reacted by other groups on silane coupling agent and cement bond material, improve interface binding intensity, basalt fibre refinforced cement sill tensile strength after effect is greatly improved, larger effect is played to the performance improving basalt fibre refinforced cement sill.Simultaneously, experiment shows, after adding silane coupling agent, the dispersiveness of nanometer silicon dioxide particle obviously will be got well, major cause is that the silanol base after nanometer silicon dioxide particle surface hydroxyl is hydrolyzed with silane coupling agent reacts and connects together, original activity hydroxy is stoped to form hydrogen bond and reuniting, simultaneously and the organic moiety of silane coupling agent can play space bit and hinders benefit.
Further technical scheme is: described retardant is one or more in citric acid, Sunmorl N 60S, tartrate.
Further technical scheme is: described basalt fibre refinforced cement sill, its raw material comprises following component: cement 650kg/m
3, flyash 150kg/m
3, tetraethoxy 30kg/m
3, fine aggregate 1450kg/m
3, High-efficiency polycarboxylic acid water reducer 25kg/m
3, citric acid: 0.03kg/m
3, basalt fibre 5.0% (volume ratio), silane coupling agent 1.5kg/m
3.
The present invention additionally provides a kind of preparation method of above-mentioned basalt fibre refinforced cement sill on the other hand, comprises the steps:
(1) get the water of respective amount by water cement ratio 0.2 ~ 0.28, weigh tetraethoxy according to ratio and be added to the water to be stirred to and be uniformly dispersed.So, tetraethoxy is hydrolyzed into nanometer silicon dioxide particle in water.
(2) put into according to ratio weighing High-efficiency polycarboxylic acid water reducer in the mixture in step (1) and continue mix to being uniformly dispersed; Adding High-efficiency polycarboxylic acid water reducer suppresses the nanometer silicon dioxide particle in step (1) to be reunited.
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix; Because tetraethoxy hydrolysis rate under weakly alkaline environment sharply increases, namely now cement as teos hydrolysis catalysts.
(4) put into according to ratio weighing basalt fibre in the mixture in step (3) and continue mix to being uniformly dispersed; Then add retardant, mix is water-soluble to retardant; When described basalt fibre refinforced cement sill comprise silane coupling agent time, now also add silane coupling agent, mix is to mixing.So, allow the part nanometer silicon dioxide particle of teos hydrolysis deposit or to be attached to basalt fibre surface, adding of silane coupling agent suppresses on the one hand nano silicon to be reunited, on the other hand with the activity hydroxy generation linked reaction of basalt fibre.
(5) synchronously carry out with step (1) ~ (4), by cement, fine aggregate, or cement, fine aggregate, active mineral admixture weigh in proportion, to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction on a vibration table;
(8) material in step (7) mould is carried out steam curing, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.Compare common maintenance, vapor cure improves curing temperature, is not only conducive to the sclerosis of cement, and the group and the cement cementitious material that are conducive to basalt fibre surface react simultaneously.
As preferably, further technical scheme is: the blanking device of described stirrer is provided with the device preventing fibrous caking.So, avoid fiber generation clustering phenomena in mixture blanking process thus cause basalt fibre skewness.
Further technical scheme is: described fine aggregate is the continuous grading fine sand of below particle diameter 0.2mm.So, by optimizing fine aggregate grating, the porosity of material is little, saves cement, and makes gelling material have good workability.
Further technical scheme is: the diameter of described basalt fibre is 13 ~ 80 μm, and length is 3 ~ 45mm.
Further technical scheme is: described steam-cured temperature 65 DEG C ~ 75 DEG C, curing time is 24 hours.The higher complete hydrolysis of tetraethoxy and the group on basalt fibre surface and cement cementitious material of being conducive to of temperature reacts, but temperature is too high, is unfavorable for the sclerosis of cement, therefore steam-cured temperature is all favourable to the two at 65 DEG C ~ 75 DEG C; 24 hours vapor cure time allowed above-mentioned chemical reaction react completely as much as possible.
Further technical scheme is: described step also comprises the step vacuumized in (4).So, reduce the bubble in mixture moulding process, reduce porosity, increase the degree of compactness of material.
In sum, compared with prior art, its remarkable advantage is in the present invention: by the optimization of formula and the performance of the basalt fibre self that improved of preparation method, is easy to cement cementitious material and combines; Decrease the porosity of basalt fibre refinforced cement sill, increase the degree of compactness of material, improve the character of basalt fibre and cement bond material universe surface layer simultaneously, improve interface binding intensity; Generally speaking, improve basalt fibre refinforced cement sill structure and mechanical property, substantially increase its resistance to compression, folding strength, and improve the toughness of material.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, and to help understanding the present invention better, but protection scope of the present invention is not limited in these embodiments.
Embodiment 1
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.25, weigh 30kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 25kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 5.0% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.03kg/m is added
3citric acid, mix is water-soluble to citric acid; Now add 1.5kg/m again
3silane coupling agent, mix is to mixing.
(5) synchronously carry out, by 650kg/m with step (1) ~ (4)
3cement, 1450kg/m
3the continuous grading fine sand of below 2mm and 150kg/m
3flyash to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 2
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
Except will not carry out the step vacuumizing process in step (7), other are with embodiment 1, list the test result of basalt fibre refinforced cement sill under the present embodiment in table 1.
Embodiment 3
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
Except not adding silane coupling agent by step (4), other are with embodiment 1, list the test result of basalt fibre refinforced cement sill under the present embodiment in table 1.
Embodiment 4
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
Except not adding flyash by step (5), other are with embodiment 3, list the test result of basalt fibre refinforced cement sill under the present embodiment in table 1.
Embodiment 5
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.28, weigh 30kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 20kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 6.5% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.02kg/m is added
3citric acid, mix is water-soluble to citric acid; Now add 1.0kg/m again
3silane coupling agent, mix is to mixing.
(5) synchronously carry out, by 700kg/m with step (1) ~ (4)
3cement, 1500kg/m
3the continuous grading fine sand of below 2mm and 90kg/m
3flyash to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 6
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.2, weigh 25kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 40kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 4.5% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.04kg/m is added
3citric acid, mix is water-soluble to citric acid; Now add 2.0kg/m again
3silane coupling agent, mix is to mixing.
(5) synchronously carry out, by 600kg/m with step (1) ~ (4)
3cement, 1300kg/m
3the continuous grading fine sand of below 2mm and 180kg/m
3flyash to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 7
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.24, weigh 25kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 30kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 4.5% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.04kg/m is added
3citric acid, mix is water-soluble to citric acid;
(5) synchronously carry out, by 600kg/m with step (1) ~ (4)
3cement and 1300kg/m
3the continuous grading fine sand of below 2mm to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 8
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.26, weigh 35kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 20kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 6.5% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.02kg/m is added
3citric acid, mix is water-soluble to citric acid;
(5) synchronously carry out, by 700kg/m with step (1) ~ (4)
3cement and 1500kg/m
3the continuous grading fine sand of below 2mm to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 9
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.28, weigh 20kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 10kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 3.0% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.01kg/m is added
3citric acid, mix is water-soluble to citric acid;
(5) synchronously carry out, by 800kg/m with step (1) ~ (4)
3cement and 1200kg/m
3the continuous grading fine sand of below 2mm to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 10
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.2, weigh 40kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 40kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 8.0% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.05kg/m is added
3citric acid, mix is water-soluble to citric acid;
(5) synchronously carry out, by 400kg/m with step (1) ~ (4)
3cement and 800kg/m
3the continuous grading fine sand of below 2mm to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Embodiment 11
In the present embodiment, using 1 cubic metre of basalt fibre refinforced cement sill as proportioning total amount.
(1) get the water of respective amount by water cement ratio 0.2, weigh 40kg/m
3tetraethoxy is also added to the water to be stirred to and is uniformly dispersed, and tetraethoxy is slowly hydrolyzed into nanometer silicon dioxide particle in beginning in water.
(2) 40kg/m is weighed
3high-efficiency polycarboxylic acid water reducer is put in the mixture in step (1) and is continued mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) weighing 8.0% (volume ratio) diameter is 13 ~ 80 μm, and length is continue mix to being uniformly dispersed during the basalt fibre of 3 ~ 45mm puts in step (3) mixture; Then 0.05kg/m is added
3citric acid, mix is water-soluble to citric acid;
(5) synchronously carry out, by 600kg/m with step (1) ~ (4)
3cement and 1600kg/m
3the continuous grading fine sand of below 2mm to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction vibratory compaction on a vibration table on a vibration table, carry out in jolt ramming process vacuumizing process;
(8) material in step (7) mould is carried out steam curing 24h, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
The test result of basalt fibre refinforced cement sill under the present embodiment is listed in table 1.
In the above-described embodiments, the blanking device of described stirrer is provided with the device preventing fibrous caking.
Table 1
| Project | Ultimate compression strength (MPa) | Folding strength (MPa) | Young's modulus (GPa) |
| Embodiment 1 | 152 | 24.8 | 43.6 |
| Embodiment 2 | 143 | 22.1 | 43.0 |
| Embodiment 3 | 131 | 22.3 | 43.1 |
| Embodiment 4 | 160 | 25.5 | 45.0 |
| Embodiment 5 | 145 | 24.2 | 42.6 |
| Embodiment 6 | 148 | 24.5 | 42.5 |
| Embodiment 7 | 142 | 23.6 | 41.8 |
| Embodiment 8 | 151 | 24.2 | 43.2 |
| Embodiment 9 | 157 | 23.1 | 42.2 |
| Embodiment 10 | 128 | 20.0 | 39.9 |
| Embodiment 11 | 143 | 24.2 | 41.8 |
Comparative example
In comparative example, except not adding tetraethoxy, other are with embodiment 1, and under comparative example, the test result of basalt fibre refinforced cement sill is as follows: ultimate compression strength 135MPa, folding strength 20.2MPa, Young's modulus 39.3GPa.
From above-mentioned embodiment, the intensity that with the addition of the embodiment 1 of tetraethoxy is better than the comparative example of not adding tetraethoxy and silicon ash, and especially folding strength has lifting by a relatively large margin.Comparatively speaking, embodiment 1 is more excellent scheme, it should be noted that, more excellent resistance to compression, the folding strength not only comparing basalt fibre refinforced cement sill in the present invention herein, but consider from the over-all properties of material and the angle entirety of its Financial cost.As comparative example 1 and embodiment 9, although in embodiment 9 intensity a little more than embodiment 1, embodiment 9 is multiplex 150kg/m
3cement, therefore when performance is suitable, in embodiment 1, the basalt fibre refinforced cement sill of preparation is more economical; In like manner be applicable to comparing of embodiment 1 and other embodiments.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a basalt fibre refinforced cement sill, is characterized in that, its raw material comprises following component: cement 400 ~ 800kg/m
3, fine aggregate 800 ~ 1600kg/m
3, tetraethoxy 20 ~ 40kg/m
3, High-efficiency polycarboxylic acid water reducer 10 ~ 40kg/m
3, retardant 0.01 ~ 0.05kg/m
3, basalt fibre 3.0% ~ 8.0% (volume ratio).
2. basalt fibre refinforced cement sill according to claim 1, it is characterized in that, its raw material comprises following component: cement 600 ~ 700kg/m
3, fine aggregate 1300 ~ 1500kg/m
3, tetraethoxy 25 ~ 35kg/m
3, High-efficiency polycarboxylic acid water reducer 20 ~ 30kg/m
3, retardant 0.02 ~ 0.04kg/m
3, basalt fibre 4.5% ~ 6.5% (volume ratio).
3. basalt fibre refinforced cement sill according to claim 2, it is characterized in that, its raw material comprises following component: cement 650kg/m
3, fine aggregate 1450kg/m
3, tetraethoxy 30kg/m
3, High-efficiency polycarboxylic acid water reducer 25kg/m
3, retardant 0.03kg/m
3, basalt fibre 5.0% (volume ratio).
4. the basalt fibre refinforced cement sill according to claims 1 to 3 any one, it is characterized in that, its raw material also comprises active mineral admixture 90 ~ 180kg/m
3.
5. basalt fibre refinforced cement sill according to claim 4, is characterized in that, described active mineral admixture is one or both in flyash and slag.
6. basalt fibre refinforced cement sill according to claim 5, it is characterized in that, its raw material also comprises silane coupling agent 1.0 ~ 2.0kg/m
3.
7. basalt fibre refinforced cement sill according to claim 6, is characterized in that, described retardant is one or more in citric acid, Sunmorl N 60S, tartrate.
8. basalt fibre refinforced cement sill according to claim 7, it is characterized in that, its raw material comprises following component: cement 650kg/m
3, flyash 150kg/m
3, tetraethoxy 30kg/m
3, fine aggregate 1450kg/m
3, High-efficiency polycarboxylic acid water reducer 25kg/m
3, citric acid: 0.03kg/m
3, basalt fibre 5.0% (volume ratio), silane coupling agent 1.5kg/m
3.
9. the preparation method of the basalt fibre refinforced cement sill described in claim 1 ~ 8 any one, is characterized in that, comprise the steps:
(1) get the water of respective amount by water cement ratio 0.2 ~ 0.28, get tetraethoxy and be added to the water to be stirred to and be uniformly dispersed;
(2) High-efficiency polycarboxylic acid water reducer is joined in the mixture in step (1) and continue mix to being uniformly dispersed;
(3) add cement to pH value to 8 ~ 9 in the mixture in step (2), continue mix;
(4) put into according to ratio weighing basalt fibre in the mixture in step (3) and continue mix to being uniformly dispersed; Then add retardant, mix is water-soluble to retardant; When described basalt fibre refinforced cement sill also comprise silane coupling agent time, now add silane coupling agent again, mix is to mixing.
(5) synchronously carry out with step (1) ~ (4), by cement, fine aggregate, or cement, fine aggregate, active mineral admixture weigh in proportion, to put in stirrer mix to mixing;
(6) mixture in step (4) is put into mix 5 ~ 30min in the stirrer in step (5);
(7) mixture in stirrer in step (6) is poured in mould, and vibratory compaction on a vibration table;
(8) material in step (7) mould is carried out steam curing, after its sclerosis, form removal, reaches requirement by obtained basalt fibre refinforced cement sill normal curing to intensity.
10. the preparation method of basalt fibre refinforced cement sill according to claim 9, is characterized in that, the blanking device of stirrer is provided with the device preventing fibrous caking; Or described fine aggregate is the continuous grading fine sand of below particle diameter 0.2mm; Or the diameter of described basalt fibre is 13 ~ 80 μm, length is 3 ~ 45mm; Or described steam-cured temperature 65 DEG C ~ 75 DEG C, curing time is 24 hours; Or also comprise the step vacuumized in described step (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966814.5A CN105541208A (en) | 2015-12-21 | 2015-12-21 | Basalt fiber reinforced cement based material and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510966814.5A CN105541208A (en) | 2015-12-21 | 2015-12-21 | Basalt fiber reinforced cement based material and preparation method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105541208A true CN105541208A (en) | 2016-05-04 |
Family
ID=55820834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510966814.5A Pending CN105541208A (en) | 2015-12-21 | 2015-12-21 | Basalt fiber reinforced cement based material and preparation method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105541208A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673679A (en) * | 2017-11-03 | 2018-02-09 | 西安东大洋混凝土有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN110053167A (en) * | 2019-05-10 | 2019-07-26 | 北京中岩大地科技股份有限公司 | A kind of test method preparing basalt fibre rubber grain concrete |
| CN111470820A (en) * | 2020-04-16 | 2020-07-31 | 扬州大学 | Basalt fiber cement-based grouting material |
| CN111646757A (en) * | 2020-05-11 | 2020-09-11 | 山西维克拓里地坪材料有限公司 | Basalt fiber self-flowing mortar and preparation method thereof |
| CN112408876A (en) * | 2020-11-09 | 2021-02-26 | 西南科技大学 | Cement-based porous material based on silicon dioxide and preparation method thereof |
| CN113290962A (en) * | 2021-04-21 | 2021-08-24 | 浙江理工大学 | Basalt fabric reinforced polyphenylene sulfide nano composite material and preparation method thereof |
| US11414351B2 (en) * | 2020-10-29 | 2022-08-16 | Rey J. Rubio | Seamix: basalt and graphene infused concrete admixture for preparing cementitious composition with non-potable water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834050A (en) * | 2005-03-18 | 2006-09-20 | 同济大学 | Plastic anti-crack modified fiber of cement-based material and prepn. process |
| CN102079647A (en) * | 2010-11-30 | 2011-06-01 | 南京理工大学 | Basalt fiber reinforced cement matrix composite and preparation method thereof |
| CN104926238A (en) * | 2015-06-18 | 2015-09-23 | 张家港市山牧新材料技术开发有限公司 | Nano cement paste |
-
2015
- 2015-12-21 CN CN201510966814.5A patent/CN105541208A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834050A (en) * | 2005-03-18 | 2006-09-20 | 同济大学 | Plastic anti-crack modified fiber of cement-based material and prepn. process |
| CN102079647A (en) * | 2010-11-30 | 2011-06-01 | 南京理工大学 | Basalt fiber reinforced cement matrix composite and preparation method thereof |
| CN104926238A (en) * | 2015-06-18 | 2015-09-23 | 张家港市山牧新材料技术开发有限公司 | Nano cement paste |
Non-Patent Citations (3)
| Title |
|---|
| 叶邦土等: "玄武岩纤维增强大掺量矿物掺合料高强混凝土试验研究", 《东南大学学报》 * |
| 李为民等: "玄武岩纤维对混凝土的增强和增韧效应", 《硅酸盐学报》 * |
| 黄靖等: "《聚羧酸系高性能减水剂及其应用技术新进展-2015》", 31 May 2015 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673679A (en) * | 2017-11-03 | 2018-02-09 | 西安东大洋混凝土有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN110053167A (en) * | 2019-05-10 | 2019-07-26 | 北京中岩大地科技股份有限公司 | A kind of test method preparing basalt fibre rubber grain concrete |
| CN111470820A (en) * | 2020-04-16 | 2020-07-31 | 扬州大学 | Basalt fiber cement-based grouting material |
| CN111646757A (en) * | 2020-05-11 | 2020-09-11 | 山西维克拓里地坪材料有限公司 | Basalt fiber self-flowing mortar and preparation method thereof |
| US11414351B2 (en) * | 2020-10-29 | 2022-08-16 | Rey J. Rubio | Seamix: basalt and graphene infused concrete admixture for preparing cementitious composition with non-potable water |
| CN112408876A (en) * | 2020-11-09 | 2021-02-26 | 西南科技大学 | Cement-based porous material based on silicon dioxide and preparation method thereof |
| CN112408876B (en) * | 2020-11-09 | 2022-05-31 | 西南科技大学 | Cement-based porous material based on silicon dioxide and preparation method thereof |
| CN113290962A (en) * | 2021-04-21 | 2021-08-24 | 浙江理工大学 | Basalt fabric reinforced polyphenylene sulfide nano composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105541208A (en) | Basalt fiber reinforced cement based material and preparation method therefor | |
| CN105541209A (en) | Basalt fiber reinforced cement based material and preparation method therefor | |
| CN108191351A (en) | A kind of ultra-high performance concrete for mixing assorted fibre | |
| CN105272001B (en) | A kind of haydite concrete and preparation method thereof | |
| CN105585289A (en) | Basalt-fiber reinforced cement-based material and preparation method thereof | |
| CN112960952A (en) | High-crack-resistance light-weight high-strength self-compacting concrete and preparation method thereof | |
| CN111470823A (en) | Composite cementing material system of ultra-high performance concrete and application method thereof | |
| CN101265061A (en) | Concrete perforated brick and manufacturing method thereof | |
| CN109356160B (en) | Construction method of mass concrete | |
| CN114409347A (en) | Steam-curing-free low-cost ultrahigh-performance concrete and preparation method thereof | |
| CN111268969A (en) | Hybrid fiber concrete prefabricated laminated slab and preparation method thereof | |
| CN113956000B (en) | Cement kiln tail gas carbonization building prefabricated product and preparation method thereof | |
| CN109970377B (en) | Water-soluble organic polymer toughened slag-based geopolymer cementing material and preparation method thereof | |
| CN103467037B (en) | A kind of reactive powder cement-base composite material and preparation method thereof | |
| CN112645668A (en) | Steam-curing-free precast concrete and preparation method thereof | |
| CN101168483B (en) | High-performance panel concrete and preparation method thereof | |
| CN108793935A (en) | Prefabricated siccative gunite concrete | |
| CN113698154A (en) | High-crack-resistance concrete for building and manufacturing method thereof | |
| CN114014613A (en) | Salt corrosion resistant concrete and preparation method thereof | |
| CN114163173A (en) | Lightweight concrete and preparation method thereof | |
| CN115057667B (en) | Self-compacting concrete and production process thereof | |
| CN114477885B (en) | Anti-crack ultrahigh-performance concrete pole and preparation method thereof | |
| CN116514478A (en) | Calcium carbonate and carbon fiber reinforced concrete and preparation method thereof | |
| CN116283148A (en) | Steaming-free ultra-high-performance concrete for bridge pier body and preparation method thereof | |
| CN112830726B (en) | Ultra-high performance concrete sleeper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |