CN103803915A - Zero cement corrosion resistance FKJ concrete mixing ratio design method - Google Patents
Zero cement corrosion resistance FKJ concrete mixing ratio design method Download PDFInfo
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- CN103803915A CN103803915A CN201210444719.5A CN201210444719A CN103803915A CN 103803915 A CN103803915 A CN 103803915A CN 201210444719 A CN201210444719 A CN 201210444719A CN 103803915 A CN103803915 A CN 103803915A
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Abstract
The present invention relates to a zero cement corrosion resistance FKJ concrete mixing ratio design method, which comprises: determining the total amount of a cementing material; determining a ratio of fly ash to mineral powder to a special FKJ solid admixture; determining bulk density, the total amount of sand and gravel, and a sand ratio; selecting an alkaline exciting agent and determining the use amount; primarily determining a mixing ratio; verifying the mixing ratio through a test; and adjusting according to the test result and determining the final mixing ratio. The zero cement corrosion resistance FKJ concrete mixing ratio design method has the following beneficial effects that: environmental pollution and waste of resource due to the large cement consumption in the ordinary concrete mixing ratio design are solved; chemical corrosion resistance of concrete is increased; and the zero cement corrosion resistance FKJ concrete is the alkaline excitation concrete formed from fly ash, ground slag (short for mineral powder), a special FKJ solid admixture, an alkaline exciting agent and a sand and gravel aggregate, and has characteristics of low water demand, low hydration heat, high strength, strong acid corrosion resistance, strong alkali corrosion resistance, and strong salt corrosion resistance.
Description
Technical field
The present invention relates to the corrosion-resistant FKJ concrete mixing proportion design method of a kind of zero cement.
Background technology
The weather resistance of normal silicate concrete under some chemical corrosion conditions is poor, and this is bad relevant with the concrete chemical resistance of normal silicate.The alkaline excitation concrete that the corrosion-resistant FKJ concrete of institute of the present invention nulling cement is made up of flyash, ground slag (abbreviation breeze), FKJ special solid admixture, alkali-activator and sandstone aggregate, also claims alkali ore slag fly ash concrete.Compared with normal silicate concrete, there is water requirement little, hydration heat is low, and intensity is high, has stronger acidproof, alkaline-resisting, salt tolerant corrosive power.Concrete gel material is made up of flyash, breeze and FKJ special solid admixture, and alkali-activator is as the active catalyst of gelling material.FKJ concrete has been broken through conventional concrete boundary, has realized zero use of cement, has reduced the discharge of CO2.To energy-conservation, profit is useless, significant contribution is made in environment protection.Therefore the present invention has significant economic benefit and social benefit.
Summary of the invention
The object of this invention is to provide the corrosion-resistant FKJ concrete mixing proportion design method of a kind of zero cement, solve design of common concrete proportioning and have the problem such as environmental pollution, the wasting of resources causing greatly because of cement consumption; Improve concrete chemical resistance, broken through conventional concrete boundary, realized zero use of cement, reduced the discharge of CO2.
The object of the invention is to be achieved through the following technical solutions:
The corrosion-resistant FKJ concrete mixing proportion design method of a kind of zero cement, comprises the following steps:
1) determine binder total amount, FKJ concrete gel material total amount should be according to project situation, design requirements and testing of materials performance.FKJ concrete gel material total amount is than the many 5-10% of conventional silicate concrete left and right, and the final of binder total amount determines it is will be by the proportioning checking of testing laboratory;
2) determine flyash, breeze, FKJ special solid admixture ratio, FKJ concrete gel material is made up of 90% flyash and breeze, 10% FKJ special solid admixture.The conventional ratio of flyash, breeze is 7: 3-3: 7, and flyash ratio is higher, and resistance to chemical corrosion is better, but gain in strength speed is slower; Final ratio should be determined by the orthogonal test of flyash, breeze, FKJ special solid admixture, alkali-activator four factors;
3) determine unit weight, sandstone total amount, sand coarse aggregate ratio, the concrete unit weight of FKJ is in 2380-2420Kg/m3 left and right, the higher unit weight of strength grade is larger, concrete stone consumption is relevant with construction technology, pump concrete is in 1020Kg/m3 left and right, non-pumping is in 1050Kg/m3 left and right, and sand coarse aggregate ratio is generally in 40% left and right.When construction, can finely tune according to engineering position, aggregate grading situation;
4) selection of alkali-activator and consumption; The kind of alkali-activator is more, conventionally uses NaOH and water glass, under acid erosion environment, should use water glass, under alkalescence and salt corrosion environment, should use NaOH; By the difference of construction technology, water glass is applicable to non-pump concrete, and NaOH is applicable to pump concrete.The volume of alkali-activator should be controlled at 4.0%-6.0%;
5) just determine proportioning; According to ratio between above-mentioned binder total amount, component, unit weight, sandstone total amount, sand coarse aggregate ratio, the kind of alkali-activator and consumption are just determined proportioning;
6) by verification experimental verification proportioning;
7) adjust according to test-results and determine final proportioning.
The corrosion-resistant FKJ concrete gel material of zero cement is made up of 90% flyash and breeze, 10% FKJ solid additive, and alkali-activator is used NaOH and water glass conventionally.
Beneficial effect of the present invention is: solved design of common concrete proportioning and had the environmental pollution, the wasting of resources that cause greatly because of cement consumption; Improve concrete chemical resistance.The alkaline excitation concrete that the corrosion-resistant FKJ concrete of zero cement is made up of flyash, ground slag (abbreviation breeze), FKJ special solid admixture, alkali-activator and sandstone aggregate, there is water requirement little, hydration heat is low, intensity is high, has stronger acidproof, alkaline-resisting, salt tolerant corrosive power.And break through conventional concrete boundary, realized zero use of cement, reduced the discharge of CO2.To energy-conservation, profit is useless, significant contribution is made in environment protection.The present invention is applicable to underground works, the sewage treatment project under acid, alkali, salt environment; And other have all types of industries and the civil building engineering of chemical resistance requirement; Especially more applicable in coastal and western saline alkali corrosion area.
Embodiment
Following experiment and operational instances are further to explanation of the present invention, should not be used as limitation of the present invention.The present invention includes following steps:
1) determine binder total amount, FKJ concrete gel material total amount should be according to project situation, design requirements and testing of materials performance.General FKJ concrete gel material total amount is than the many 5-10% of conventional silicate concrete left and right, and the final of binder total amount determines it is the proportioning checking that will pass through testing laboratory, and incorporation engineering rule of thumb data;
2) determine flyash, breeze, FKJ special solid admixture ratio, FKJ concrete gel material is made up of 90% flyash and breeze, 10% FKJ special solid admixture.The conventional ratio of flyash, breeze is 7: 3-3: 7, and flyash ratio is higher, and resistance to chemical corrosion is better, but gain in strength speed is slower; Final ratio should be determined by the orthogonal test of flyash, breeze, FKJ special solid admixture, alkali-activator four factors;
3) determine unit weight, sandstone total amount, sand coarse aggregate ratio, the concrete unit weight of FKJ is in 2380-2420Kg/m3 left and right, the higher unit weight of strength grade is larger, concrete stone consumption is relevant with construction technology, pump concrete is in 1020Kg/m3 left and right, non-pumping is in 1050Kg/m3 left and right, and sand coarse aggregate ratio is generally in 40% left and right.When construction, can finely tune according to engineering position, aggregate grading situation;
4) selection of alkali-activator and consumption; The kind of alkali-activator is more, conventionally uses NaOH and water glass, under acid erosion environment, should use water glass, under alkalescence and salt corrosion environment, should use NaOH; By the difference of construction technology, water glass is applicable to non-pump concrete, and NaOH is applicable to pump concrete.The volume of alkali-activator should be controlled at 4.0%-6.0%;
5) just determine proportioning; According to ratio between above-mentioned binder total amount, component, unit weight, sandstone total amount, sand coarse aggregate ratio, the kind of alkali-activator and consumption are just determined proportioning;
6) by verification experimental verification proportioning;
7) adjust according to test-results and determine final proportioning.
Application example
Jiaxing mayor XX sewage pumping station engineering, sewage disposal first phase of construction part of contaminated water can be branched to No. 3, long water route sewage pumping station by this engineering construction, after promoting, send into newly-built the second stage of sink drainage, can alleviate south, recent urban district line sewage transport pressure, realize interconnecting between sewage disposal first phase of construction and the second stage of the project main sewer line, for subsequent use, allotment mutually each other, improve the security that the overall wastewater disposition in Jiaxing city is carried, increase the reasonableness of wastewater disposition system.Newly-built XX sewage lifting pump station, the about 236.3m of floor area of building
2, design sewage treatment capacity is 190,000 m
3/ d.Concrete design strength grade is C35P6.Concrete adopts FKJ-C35, the about 1800m of total amount
3, divide to water for three times and smash.Concrete indices reaches design requirements after testing, and effect is good.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (8)
1. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement, is characterized in that, comprises the following steps:
1) determine binder total amount;
2) determine flyash, breeze, FKJ special solid admixture ratio;
3) determine unit weight, sandstone total amount, sand coarse aggregate ratio;
4) selection of alkali-activator and consumption;
5) just determine proportioning;
6) by verification experimental verification proportioning;
7) adjust according to test-results and determine final proportioning.
2. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 1, it is characterized in that: in step 1) in, FKJ concrete gel material total amount is than the many 5-10% of conventional silicate concrete left and right, and the final of binder total amount determines it is will be by the proportioning checking of testing laboratory.
3. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 2, it is characterized in that: in step 2) in, FKJ concrete gel material is made up of 90% flyash and breeze, 10% FKJ special solid admixture, and flyash, breeze ratio are 7: 3-3: 7.
4. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 3, is characterized in that: in step 3) in the concrete unit weight of FKJ at 2380-2420Kg/m
3left and right, pump concrete is at 1020Kg/m
3left and right, non-pumping is at 1050Kg/m
3left and right, sand coarse aggregate ratio is generally in 40% left and right.
5. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 4, it is characterized in that: in step 4) in, alkali-activator adopts NaOH and water glass, under acid erosion environment, should use water glass, under alkalescence and salt corrosion environment, should use NaOH; By the difference of construction technology, water glass is applicable to non-pump concrete, and NaOH is applicable to pump concrete; The volume of alkali-activator should be controlled at 4.0%-6.0%.
6. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 5, it is characterized in that: in step 5) in, according to ratio between above-mentioned binder total amount, component, unit weight, sandstone total amount, sand coarse aggregate ratio, the kind of alkali-activator and consumption are just determined proportioning.
7. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 6, it is characterized in that: in step 5) in, the corrosion-resistant FKJ concrete gel material of zero cement is made up of 90% flyash and breeze, 10% FKJ solid additive, and alkali-activator is used NaOH and water glass conventionally.
8. the corrosion-resistant FKJ concrete mixing proportion design method of zero cement according to claim 7, it is characterized in that: in step 7) in, the ratio between each component should be determined by the orthogonal test of flyash, breeze, FKJ solid additive, alkali-activator four factors.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107867806A (en) * | 2017-12-01 | 2018-04-03 | 盐城工学院 | Sludge incineration ash base geological polymer and preparation method thereof |
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| CN107867806A (en) * | 2017-12-01 | 2018-04-03 | 盐城工学院 | Sludge incineration ash base geological polymer and preparation method thereof |
| CN107867806B (en) * | 2017-12-01 | 2020-12-08 | 盐城工学院 | Sludge incineration ash-based geopolymer and preparation method thereof |
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Inventor after: Yu Liming Inventor after: Ding Aizhong Inventor after: Zhan Congbo Inventor after: Gu Qing Inventor before: Yu Liming Inventor before: Li Chang |
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Application publication date: 20140521 |
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