CN102745963A - Cement-base material with ultra-high performance and preparation method thereof - Google Patents
Cement-base material with ultra-high performance and preparation method thereof Download PDFInfo
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- CN102745963A CN102745963A CN2012102520603A CN201210252060A CN102745963A CN 102745963 A CN102745963 A CN 102745963A CN 2012102520603 A CN2012102520603 A CN 2012102520603A CN 201210252060 A CN201210252060 A CN 201210252060A CN 102745963 A CN102745963 A CN 102745963A
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Abstract
The invention discloses a cement-base material with an ultra-high performance and a preparation method of the cement-base material. The cement-base material with the ultra-high performance comprises the following components in ratio by weight: 0.6-0.9 part of cement, 0.08-0.12 part of silica fume, 0.1-0.3 part of glass powder, 0.8-1.2 parts of sand, 0.05-0.15 part of steel fibre, 0.02-0.03 part of water reducing agent and 0.14-0.18 part of water. The cement-base material with the ultra-high performance has the advantages that waste glass is grinded and processed to be glass powder, so as to form materials which can be used; the glass powder is used to replace part cement to prepare the cement-base material with the ultra-high performance, thereby improving the using efficiency of the waste glass; moreover, the strength of the cement-base material with the ultra-high performance is more than 200 MPa, and alkali-free-aggregate reaction can be widely applicable to such fields as building, defence engineering, bridge manufacturing and the like.
Description
Technical field
The present invention relates to building material technical field, a kind of specifically very-high performance cement-based material and preparation method thereof.
Background technology
Very-high performance cement-based material (Ultra-High Performance Cement-Based Materials) is that development in recent years a kind of superelevation of getting up is strong, the novel concrete based composites of H.T. and high-durability.The basic design philosophy of very-high performance cement-based material is: fineness and activity through improving material component, adopt high-temperature steam curing, and reduce the defective (as: hole and microfracture) of material internal, obtain superstrength and high-durability; Through the admixture steel fiber, obtain H.T..Around this principle, the particles of aggregates size that the very-high performance cement-based material is adopted is less than 1.25mm, and purpose is the pitch of holes that as far as possible reduces in the material, thereby improves the degree of compactness of mixture.The Quebec, Canada Xie Er Brooker footbridge of building in 1997; This bridge is owing to adopt the very-high performance cement-based material of 200MPa level; Alleviated deadweight greatly, improved at high humidity environment, frequently received the structure durability ability under deicer salts corrosion and the freeze-thaw cycle effect.The Mars Hill bridge that Lafarge SA builds in U.S. Iowa; Because adopting the very-high performance cement-based material fully builds; The ultimate compression strength of material reaches 206.8MPa; Promoted the application and the popularization of very-high performance cement-based material, this bridge 2006 obtains U.S. PCI association 2 years " the tenth bridge contest prize ", and is described as " following bridge ".
Concrete Jian – aggregate reaction has worldwide caused the destruction and the enormous economic loss of a large amount of concrete workses as one of major reason that causes concrete durability to descend.Alkali content is meant the sodium oxide equivalent content in the concrete, with kg/m
3Meter.When containing alkali content, cement surpasses that alkalinity surpasses 3.0kg/m in wt0.6% or the concrete
3The time, under wet environment, Jian – aggregate reaction will take place in the basic active aggregate, cause concrete to expand destruction.Because the cracking destruction that You Jian – aggregate reaction causes is difficult to stop it to continue development and repairs, so be called as concrete " cancer ".
Jian – aggregate reaction has three prerequisites: contain activeconstituents in the aggregate, and surpass some amount; Alkalinity is higher in the concrete; Moisture is arranged.From these three prerequisites, it has been found that the braking measure that some prevent Jian – aggregate reaction, for example: select inert aggregate; Select low alkali cement, and total alkalinity in the control concrete; In concrete, mix an amount of active admixture, like flyash, silicon ash etc.; In concrete, mix air entrapment agent, make and wherein contain a large amount of equally distributed micro-bubbles, can reduce the expansion damage effect; When conditions permit, take to prevent that extraneous moisture from infiltrating the measure of inside concrete etc.In the measure that a large amount of prevention Jian – aggregate reactions of taking in various countries take place, using inert aggregate is the most safe and reliable measure.Therefore, at the coagulation pedosphere, can not adopt the basic active aggregate to prepare concrete usually; And be to use inactive high-quality aggregate; This reduces the risk that Jian – aggregate reaction takes place on the one hand, has also increased Financial cost but then, also causes the wasting of resources simultaneously.
Glass is unbodied, and contains a large amount of silicon and calcium; As long as grinding arrives certain fineness, will possess pozzolanic activity in theory, even gelling, can be used as concrete admixture.Simultaneously, exactly because also contain a large amount of soft silicas, have very high basic active, glass also will bring alkali-pasc reaction (ASR) risk, and then to bringing on a disaster property of concrete structure destruction.
Though the very-high performance cement-based material has good mechanical performance and excellent weather resistance; But the time of coming out after all is not long; The glass that will have basic active of about the applied research of glass powder in the very-high performance cement-based material seldom, more having no talent is applied in the very-high performance cement-based material as raw material.
Summary of the invention
The purpose of this invention is to provide a kind of very-high performance cement-based material and preparation method thereof, not only can improve scrap glass utilization ratio, reduce cost, also can avoid Jian – aggregate reaction, obtain the cement-based material of very high strength.
A kind of very-high performance cement-based material of the present invention, its components by weight is:
Cement 0.6-0.9 part
Silicon ash 0.08-0.12 part
Glass powder 0.1-0.3 part
Sand 0.8-1.2 part
Steel fiber 0.05-0.15 part
Water reducer 0.02-0.03 part
Water 0.14-0.18 part.
Said cement is ordinary Portland cement or silicate cement, strength grade be 42.5 and more than.
Specific surface area>=the 15000m of said silicon ash
2/ kg, SiO
2Content>=90%.
Said glass powder has basic active, and 14 days mortar bars rapid detection rate of expansion are greater than 0.400%, specific surface area＞800m
2/ kg.
The largest particle particle diameter of said sand is 1.25mm.
Said steel fiber, length are 15mm, and diameter is 0.2mm, and tensile strength is 2000 grades, i.e. tensile strength >=2000MPa.
Said water reducer is a polycarboxylic acid series high efficiency water reducing agent.
The preparation method of very-high performance cement-based material of the present invention, its step is following:
1) raw-material choosing: press cement 0.6-0.9 part, silicon ash 0.08-0.12 part, glass powder 0.1-0.3 part, sand 0.8-1.2 part, steel fiber 0.05-0.15 part, water reducer 0.02-0.03 part, water 0.14-0.18 part, it is subsequent use to choose above-mentioned starting material;
2) stir: at first cement, silicon ash, glass powder are poured in the stirrer, stirred 1～3 minute, added the sand restir 1～2 minute, add steel fiber again and stirred 1～3 minute, add water and water reducer and stirred 4～6 minutes, obtain compound;
3) maintenance: covered with plastic film immediately after compound pours into the mold, form removal in 24 hours is put under 80～90 ℃, the environment of standard atmospheric pressure immediately, and steam-cured 72 hours, naturally cooling was 1 day afterwards.
Because the water-cement ratio of very-high performance cement-based material is very low, usually below 0.20, on the one hand, the internal moisture deficiency is so that the complete aquation of gelling material, and inside concrete does not have free water and exists; On the other hand, the very-high performance cement-based material has fine and close microtexture, and extraneous moisture can not infiltrate.Therefore, the present invention has controlled the environment that water is arranged effectively, and this is one of three prerequisites of Shi Jian – aggregate reaction also; And glass powder particles is very thin, and is evenly distributed in the very-high performance cement-based material, and pozzolanic reaction can take place glass powder particles soon, thereby the very-high performance cement-based material can not destroy Yin Jian – aggregate reaction.
The advantage of very-high performance cement-based material of the present invention and preparation method thereof is: can make it become operable starting material with scrap glass through the levigate glass powder that is processed into; Utilize levigate glass powder to substitute part cement; Prepare the very-high performance cement-based material; Improved the utilising efficiency of scrap glass; And very-high performance cement-based material intensity surpasses 200MPa, and the generation of no Jian – aggregate reaction can be adaptable across fields such as construction work, defence engineering, bridge manufacturings.
Embodiment
For a better understanding of the present invention, further illustrate content of the present invention, but content of the present invention not only is confined to following embodiment below in conjunction with embodiment.
Embodiment 1～9:
A kind of very-high performance cement-based material that utilizes the glass powder preparation, the shared weight ratio of each starting material is as shown in table 1.
The raw-material weight ratio and the intensity level of table 1 very-high performance cement-based material
(volume unit: MPa)
| Numbering | Cement | The silicon ash | Glass powder | Sand | Steel fiber | Water reducer | Water | Ultimate compression strength |
| Comparison sample 1 | 0.9 | 0.1 | 0 | 1 | 0.05 | 0.03 | 0.14 | 237.1 |
| Embodiment 1 | 0.8 | 0.1 | 0.1 | 1 | 0.05 | 0.03 | 0.14 | 240.9 |
| Embodiment 2 | 0.7 | 0.1 | 0.2 | 1 | 0.05 | 0.03 | 0.14 | 244.5 |
| Embodiment 3 | 0.6 | 0.1 | 0.3 | 1 | 0.05 | 0.03 | 0.14 | 234.8 |
| Comparison sample 2 | 0.9 | 0.1 | 0 | 1 | 0.10 | 0.03 | 0.14 | 259.8 |
| Embodiment 4 | 0.8 | 0.1 | 0.1 | 1 | 0.10 | 0.03 | 0.14 | 264.1 |
| Embodiment 5 | 0.7 | 0.1 | 0.2 | 1 | 0.10 | 0.03 | 0.14 | 268.3 |
| Embodiment 6 | 0.6 | 0.1 | 0.3 | 1 | 0.10 | 0.03 | 0.14 | 261.5 |
| Comparison sample 3 | 0.9 | 0.1 | 0 | 1 | 0.15 | 0.03 | 0.14 | 285.3 |
| Embodiment 7 | 0.8 | 0.1 | 0.1 | 1 | 0.15 | 0.03 | 0.14 | 297.8 |
| Embodiment 8 | 0.7 | 0.1 | 0.2 | 1 | 0.15 | 0.03 | 0.14 | 302.7 |
| Embodiment 9 | 0.6 | 0.1 | 0.3 | 1 | 0.15 | 0.03 | 0.14 | 273.9 |
Glass powder: processed by the Beer Bottle pulverizing and jevigating, according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", mortar bars rapid detection rate of expansion was 0.415% in 14 days, was the basic active material, and the specific surface area of glass powder is 1057m
2/ kg;
Cement: ordinary Portland cement, strength grade are 42.5;
The silicon ash: specific surface area is 20000 m
2/ kg, SiO
2Content is 95%;
Sand: natural river sand, largest particle particle diameter are 1.25mm;
Steel fiber: the DM-07 copper facing microfilament that Qingpu, Shanghai steel fiber factory produces, length is 15 mm, and diameter is 0.2mm, and tensile strength is 2880MPa;
Water reducer: the polycarboxylic acid series 20HE-1 of Sika company high efficiency water reducing agent, 40% solid content;
Water: tap water.
Said components is prepared as follows:
1) stirs: at first cement, silicon ash, glass powder are poured in the stirrer, stirred 2 minutes, added the sand restir 1 minute, add steel fiber again and stirred 2 minutes, add water and water reducer and stirred 6 minutes, obtain compound;
2) maintenance: the compound form removal in back 24 hours that pours into the mold, put into immediately under 90 ℃, the environment of standard atmospheric pressure, steam-cured 72 hours, naturally cooling afterwards.
Each group that obtains is utilized the very-high performance cement-based material of glass powder preparation, and its intensity level is as shown in table 1.
For whether check very-high performance cement-based material alkali can take place destroy, with reference to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", add NaOH and make cement contain the alkali equivalent to reach 1.25%, sample dimensions is 275 * 75 * 75mm.'s 20 ± 2 ℃ the shaping test piece that mixes and stirs according to above weight ratio in room temperature; Connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%, and putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance.Measure the length of time length variations of test specimen in 1 week, 2 weeks, 4 weeks, 13 weeks, 26 weeks and 52 weeks.Test as shown in table 2ly, the result shows that 1 age period rate of expansion of all test specimens all is lower than 0.040%, destructive alkali does not take place expand.
Table 2 concrete prism method test-results (rate of expansion %)
| Numbering | 1 week | 2 weeks | 4 weeks | 13 weeks | 26 weeks | 52 weeks |
| Comparison sample 1 | 0.007 | 0.009 | 0.010 | 0.013 | 0.015 | 0.017 |
| Embodiment 1 | 0.008 | 0.009 | 0.010 | 0.014 | 0.016 | 0.018 |
| Embodiment 2 | 0.008 | 0.010 | 0.011 | 0.014 | 0.016 | 0.018 |
| Embodiment 3 | 0.009 | 0.010 | 0.011 | 0.015 | 0.018 | 0.020 |
| Comparison sample 2 | 0.007 | 0.008 | 0.009 | 0.012 | 0.014 | 0.016 |
| Embodiment 4 | 0.007 | 0.009 | 0.010 | 0.013 | 0.015 | 0.017 |
| Embodiment 5 | 0.008 | 0.009 | 0.010 | 0.014 | 0.016 | 0.018 |
| Embodiment 6 | 0.008 | 0.010 | 0.010 | 0.014 | 0.017 | 0.018 |
| Comparison sample 3 | 0.006 | 0.008 | 0.008 | 0.011 | 0.014 | 0.015 |
| Embodiment 7 | 0.007 | 0.008 | 0.009 | 0.012 | 0.014 | 0.016 |
| Embodiment 8 | 0.007 | 0.009 | 0.010 | 0.013 | 0.015 | 0.017 |
| Embodiment 9 | 0.008 | 0.009 | 0.010 | 0.014 | 0.016 | 0.018 |
Embodiment 10～18:
A kind of very-high performance cement-based material that utilizes the glass powder preparation, the shared weight ratio of each starting material is as shown in table 3.
The raw-material weight ratio and the intensity level of table 3 very-high performance cement-based material
(volume unit: MPa)
| Numbering | Cement | The silicon ash | Glass powder | Sand | Steel fiber | Water reducer | Water | Ultimate compression strength |
| Comparison sample 4 | 0.9 | 0.1 | 0 | 1 | 0.05 | 0.02 | 0.16 | 222.7 |
| Embodiment 10 | 0.8 | 0.1 | 0.1 | 1 | 0.05 | 0.02 | 0.16 | 231.5 |
| Embodiment 11 | 0.7 | 0.1 | 0.2 | 1 | 0.05 | 0.02 | 0.16 | 245.4 |
| Embodiment 12 | 0.6 | 0.1 | 0.3 | 1 | 0.05 | 0.02 | 0.16 | 231.8 |
| Comparison sample 5 | 0.9 | 0.1 | 0 | 1 | 0.10 | 0.02 | 0.16 | 247.6 |
| Embodiment 13 | 0.8 | 0.1 | 0.1 | 1 | 0.10 | 0.02 | 0.16 | 251.4 |
| Embodiment 14 | 0.7 | 0.1 | 0.2 | 1 | 0.10 | 0.02 | 0.16 | 259.6 |
| Embodiment 15 | 0.6 | 0.1 | 0.3 | 1 | 0.10 | 0.02 | 0.16 | 247.7 |
| Comparison sample 6 | 0.9 | 0.1 | 0 | 1 | 0.15 | 0.02 | 0.16 | 259.1 |
| Embodiment 16 | 0.8 | 0.1 | 0.1 | 1 | 0.15 | 0.02 | 0.16 | 267.9 |
| Embodiment 17 | 0.7 | 0.1 | 0.2 | 1 | 0.15 | 0.02 | 0.16 | 273.8 |
| Embodiment 18 | 0.6 | 0.1 | 0.3 | 1 | 0.15 | 0.02 | 0.16 | 242.3 |
Glass powder: processed by the Beer Bottle pulverizing and jevigating, according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", mortar bars rapid detection rate of expansion was 0.422% in 14 days, was the basic active material, and the specific surface area of glass powder is 973m
2/ kg;
Cement: silicate cement, strength grade are 42.5;
The silicon ash: specific surface area is 18000 m
2/ kg, SiO
2Content is 93%;
Sand: natural river sand, largest particle particle diameter are 1.25mm;
Steel fiber: the DM-07 copper facing microfilament that Qingpu, Shanghai steel fiber factory produces, length is 15 mm, and diameter is 0.2mm, and tensile strength is 2880MPa;
Water reducer: horse shellfish SP1 high efficiency water reducing agent, 30% solid content;
Water: tap water.
The above-mentioned very-high performance cement-based material that utilizes the glass powder preparation is prepared as follows:
1) stirs: at first cement, silicon ash, glass powder are poured in the stirrer, stirred 2 minutes, added the sand restir 1 minute, add steel fiber again and stirred 2 minutes, add water and water reducer and stirred 5 minutes, obtain compound;
2) maintenance: the compound form removal in back 24 hours that pours into the mold, put into immediately under 80 ℃, the environment of standard atmospheric pressure, steam-cured 72 hours, naturally cooling afterwards.
Each group that obtains is utilized the very-high performance cement-based material of glass powder preparation, and its intensity level is as shown in table 3.
For whether check very-high performance cement-based material alkali can take place destroy, with reference to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", add NaOH and make cement contain the alkali equivalent to reach 1.25%, sample dimensions is 275 * 75 * 75mm.'s 20 ± 2 ℃ the shaping test piece that mixes and stirs according to above weight ratio in room temperature; Connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%, and putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance.Measure the length of time length variations of test specimen in 1 week, 2 weeks, 4 weeks, 13 weeks, 26 weeks and 52 weeks.Test as shown in table 4ly, the result shows that 1 age period rate of expansion of all test specimens all is lower than 0.040%, destructive alkali does not take place expand.
Table 4 concrete prism method test-results (rate of expansion %)
| Numbering | 1 week | 2 weeks | 4 weeks | 13 weeks | 26 weeks | 52 weeks |
| Comparison sample 4 | 0.009 | 0.009 | 0.010 | 0.014 | 0.017 | 0.019 |
| Embodiment 10 | 0.009 | 0.010 | 0.011 | 0.015 | 0.018 | 0.020 |
| Embodiment 11 | 0.009 | 0.011 | 0.012 | 0.016 | 0.019 | 0.022 |
| Embodiment 12 | 0.010 | 0.011 | 0.012 | 0.017 | 0.020 | 0.023 |
| Comparison sample 5 | 0.008 | 0.009 | 0.010 | 0.014 | 0.016 | 0.018 |
| Embodiment 13 | 0.008 | 0.009 | 0.010 | 0.014 | 0.017 | 0.019 |
| Embodiment 14 | 0.008 | 0.010 | 0.011 | 0.015 | 0.018 | 0.020 |
| Embodiment 15 | 0.009 | 0.011 | 0.012 | 0.016 | 0.019 | 0.022 |
| Comparison sample 6 | 0.007 | 0.008 | 0.009 | 0.013 | 0.015 | 0.018 |
| Embodiment 16 | 0.007 | 0.009 | 0.010 | 0.013 | 0.016 | 0.018 |
| Embodiment 17 | 0.008 | 0.009 | 0.010 | 0.014 | 0.017 | 0.019 |
| Embodiment 18 | 0.009 | 0.010 | 0.011 | 0.015 | 0.018 | 0.020 |
Embodiment 19～27:
A kind of very-high performance cement-based material that utilizes the glass powder preparation, the shared weight ratio of each starting material is as shown in table 5.
The raw-material weight ratio and the intensity level of table 5 very-high performance cement-based material
(volume unit: MPa)
| Numbering | Cement | The silicon ash | Glass powder | Sand | Steel fiber | Water reducer | Water | Ultimate compression strength |
| Comparison sample 7 | 0.9 | 0.1 | 0 | 1 | 0.05 | 0.02 | 0.18 | 206.3 |
| Embodiment 19 | 0.8 | 0.1 | 0.1 | 1 | 0.05 | 0.02 | 0.18 | 204.1 |
| Embodiment 20 | 0.7 | 0.1 | 0.2 | 1 | 0.05 | 0.02 | 0.18 | 213.3 |
| Embodiment 21 | 0.6 | 0.1 | 0.3 | 1 | 0.05 | 0.02 | 0.18 | 204.4 |
| Comparison sample 8 | 0.9 | 0.1 | 0 | 1 | 0.10 | 0.02 | 0.18 | 216.9 |
| Embodiment 22 | 0.8 | 0.1 | 0.1 | 1 | 0.10 | 0.02 | 0.18 | 225.3 |
| Embodiment 23 | 0.7 | 0.1 | 0.2 | 1 | 0.10 | 0.02 | 0.18 | 222.6 |
| Embodiment 24 | 0.6 | 0.1 | 0.3 | 1 | 0.10 | 0.02 | 0.18 | 205.4 |
| Comparison sample 9 | 0.9 | 0.1 | 0 | 1 | 0.15 | 0.02 | 0.18 | 228.0 |
| Embodiment 25 | 0.8 | 0.1 | 0.1 | 1 | 0.15 | 0.02 | 0.18 | 226.7 |
| Embodiment 26 | 0.7 | 0.1 | 0.2 | 1 | 0.15 | 0.02 | 0.18 | 233.9 |
| Embodiment 27 | 0.6 | 0.1 | 0.3 | 1 | 0.15 | 0.02 | 0.18 | 211.7 |
Glass powder: processed by the Beer Bottle pulverizing and jevigating, according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", mortar bars rapid detection rate of expansion was 0.439% in 14 days, was the basic active material, and the specific surface area of glass powder is 857m
2/ kg;
Cement: silicate cement, strength grade are 42.5;
The silicon ash: specific surface area is 15000 m
2/ kg, SiO
2Content is 92%;
Sand: natural river sand, largest particle particle diameter are 1.25mm;
Steel fiber: the DM-07 copper facing microfilament that Qingpu, Shanghai steel fiber factory produces, length is 15 mm, and diameter is 0.2mm, and tensile strength is 2880MPa;
Water reducer: the ADVA152 of Grace company high efficiency water reducing agent, 40% solid content;
Water: tap water.
The above-mentioned very-high performance cement-based material that utilizes the glass powder preparation is prepared as follows:
1) stirs: at first cement, silicon ash, glass powder are poured in the stirrer, stirred 2 minutes, added the sand restir 1 minute, add steel fiber again and stirred 2 minutes, add water and water reducer and stirred 4 minutes, obtain compound;
2) maintenance: the compound form removal in back 24 hours that pours into the mold, put into immediately under 85 ℃, the environment of standard atmospheric pressure, steam-cured 72 hours, naturally cooling afterwards.
Each group that obtains is utilized the very-high performance cement-based material of glass powder preparation, and its intensity level is as shown in table 5.
For whether check very-high performance cement-based material alkali can take place destroy, with reference to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 ", add NaOH and make cement contain the alkali equivalent to reach 1.25%, sample dimensions is 275 * 75 * 75mm.'s 20 ± 2 ℃ the shaping test piece that mixes and stirs according to above weight ratio in room temperature; Connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%, and putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance.Measure the length of time length variations of test specimen in 1 week, 2 weeks, 4 weeks, 13 weeks, 26 weeks and 52 weeks.Test as shown in table 6ly, the result shows that 1 age period rate of expansion of all test specimens all is lower than 0.040%, destructive alkali does not take place expand.
Table 6 concrete prism method test-results (rate of expansion %)
| Numbering | 1 week | 2 weeks | 4 weeks | 13 weeks | 26 weeks | 52 weeks |
| Comparison sample 7 | 0.009 | 0.010 | 0.011 | 0.016 | 0.018 | 0.021 |
| Embodiment 19 | 0.009 | 0.011 | 0.012 | 0.016 | 0.019 | 0.022 |
| Embodiment 20 | 0.010 | 0.011 | 0.012 | 0.017 | 0.020 | 0.023 |
| Embodiment 21 | 0.010 | 0.012 | 0.013 | 0.018 | 0.021 | 0.025 |
| Comparison sample 8 | 0.008 | 0.009 | 0.010 | 0.015 | 0.017 | 0.020 |
| Embodiment 22 | 0.009 | 0.010 | 0.011 | 0.015 | 0.018 | 0.020 |
| Embodiment 23 | 0.010 | 0.011 | 0.012 | 0.016 | 0.019 | 0.023 |
| Embodiment 24 | 0.010 | 0.011 | 0.012 | 0.017 | 0.020 | 0.024 |
| Comparison sample 9 | 0.007 | 0.009 | 0.010 | 0.014 | 0.016 | 0.019 |
| Embodiment 25 | 0.008 | 0.009 | 0.010 | 0.015 | 0.017 | 0.020 |
| Embodiment 26 | 0.009 | 0.010 | 0.011 | 0.015 | 0.018 | 0.021 |
| Embodiment 27 | 0.009 | 0.011 | 0.012 | 0.017 | 0.019 | 0.022 |
Above-described specific embodiment; The object of the invention, technical scheme and useful result have been carried out further detailed description, and institute it should be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. very-high performance cement-based material is characterized in that components by weight is:
Cement 0.6-0.9 part
Silicon ash 0.08-0.12 part
Glass powder 0.1-0.3 part
Sand 0.8-1.2 part
Steel fiber 0.05-0.15 part
Water reducer 0.02-0.03 part
Water 0.14-0.18 part.
2. very-high performance cement-based material as claimed in claim 1 is characterized in that: said cement is ordinary Portland cement or silicate cement, strength grade be 42.5 and more than.
3. very-high performance cement-based material as claimed in claim 1 is characterized in that: the specific surface area>=15000m of said silicon ash
2/ kg, SiO
2Content>=90%.
4. very-high performance cement-based material as claimed in claim 1 is characterized in that: said glass powder has basic active, and 14 days mortar bars rapid detection rate of expansion are greater than 0.400%, specific surface area＞800m
2/ kg.
5. very-high performance cement-based material as claimed in claim 1 is characterized in that: the largest particle particle diameter of said sand is 1.25mm.
6. very-high performance cement-based material as claimed in claim 1 is characterized in that: the length of said steel fiber is 15mm, and diameter is 0.2mm, and tensile strength is 2000 grades, is tensile strength >=2000MPa.
7. very-high performance cement-based material as claimed in claim 1 is characterized in that: said water reducer is a polycarboxylic acid series high efficiency water reducing agent.
8. the preparation method of very-high performance cement-based material as claimed in claim 1 is characterized in that comprising the steps:
1) raw-material choosing: press cement 0.6-0.9 part, silicon ash 0.08-0.12 part, glass powder 0.1-0.3 part, sand 0.8-1.2 part, steel fiber 0.05-0.15 part, water reducer 0.02-0.03 part, water 0.14-0.18 part, it is subsequent use to choose above-mentioned starting material;
2) stir: at first cement, silicon ash, glass powder are poured in the stirrer, stirred 1～3 minute, added the sand restir 1～2 minute, add steel fiber again and stirred 1～3 minute, add water and water reducer and stirred 4～6 minutes, obtain compound;
3) maintenance: covered with plastic film immediately after compound pours into the mold, form removal in 24 hours is put under 80～90 ℃, the environment of standard atmospheric pressure immediately, and steam-cured 72 hours, naturally cooling was 1 day afterwards.
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| CN103172323A (en) * | 2012-12-28 | 2013-06-26 | 北京新航建材集团有限公司 | Superfine common glass powder doped active powder concrete and preparation method thereof |
| CN103847024A (en) * | 2012-12-06 | 2014-06-11 | 蒋元海 | Method for producing prestress high-intensity concrete (PHC) pipe piles by glass-doped powder |
| CN103936353A (en) * | 2014-03-31 | 2014-07-23 | 南华大学 | Preparation method of cement mortar |
| CN105948587A (en) * | 2016-05-11 | 2016-09-21 | 王星烨 | Concrete with outstanding comprehensive performance and preparation method of concrete |
| CN106874600A (en) * | 2017-02-17 | 2017-06-20 | 武汉大学 | The method for quickly generating the concrete two-dimensional random aggregate model that cobble rubble is mingled with |
| CN107324712A (en) * | 2017-07-27 | 2017-11-07 | 长安大学 | Very-high performance steel fiber reinforced concrete and preparation method thereof |
| CN108585689A (en) * | 2018-05-23 | 2018-09-28 | 浙江大学 | A kind of screw steel fiber ultra-high performance concrete and preparation method |
| CN109133774A (en) * | 2018-08-10 | 2019-01-04 | 南京理工大学 | Microdilatancy type assembled architecture ultrahigh-performance cement-based grouting material and preparation method |
| CN109437776A (en) * | 2019-01-14 | 2019-03-08 | 湘潭大学 | A kind of high additive hybrid glass powder C190UHPC and preparation method thereof |
| CN109503090A (en) * | 2019-01-14 | 2019-03-22 | 湘潭大学 | A kind of high additive hybrid glass powder C180UHPC and preparation method thereof |
| CN113149571A (en) * | 2021-05-26 | 2021-07-23 | 中交第三公路工程局有限公司 | Cement base material of ultra-high performance concrete and preparation method thereof |
| CN114573296A (en) * | 2022-03-08 | 2022-06-03 | 安徽理工大学 | Preparation method of waste glass powder modified glass fiber reinforced cement mortar |
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| CN101891425A (en) * | 2010-07-23 | 2010-11-24 | 中建商品混凝土有限公司 | Active powder concrete and preparation method thereof |
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| CN101628801A (en) * | 2009-08-20 | 2010-01-20 | 杭州正博新型建筑材料有限公司 | Inorganic light-weight aggregate thermal insulation mortar |
| CN101891425A (en) * | 2010-07-23 | 2010-11-24 | 中建商品混凝土有限公司 | Active powder concrete and preparation method thereof |
| CN102219459A (en) * | 2011-04-02 | 2011-10-19 | 武汉理工大学 | Radiation shield concrete and preparation method thereof |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847024A (en) * | 2012-12-06 | 2014-06-11 | 蒋元海 | Method for producing prestress high-intensity concrete (PHC) pipe piles by glass-doped powder |
| CN103172323B (en) * | 2012-12-28 | 2015-04-29 | 北京新航建材集团有限公司 | Superfine common glass powder doped active powder concrete and preparation method thereof |
| CN103172323A (en) * | 2012-12-28 | 2013-06-26 | 北京新航建材集团有限公司 | Superfine common glass powder doped active powder concrete and preparation method thereof |
| CN103936353A (en) * | 2014-03-31 | 2014-07-23 | 南华大学 | Preparation method of cement mortar |
| CN105948587A (en) * | 2016-05-11 | 2016-09-21 | 王星烨 | Concrete with outstanding comprehensive performance and preparation method of concrete |
| CN106874600B (en) * | 2017-02-17 | 2019-06-25 | 武汉大学 | The method for quickly generating the concrete two-dimensional random aggregate model that cobble rubble is mingled with |
| CN106874600A (en) * | 2017-02-17 | 2017-06-20 | 武汉大学 | The method for quickly generating the concrete two-dimensional random aggregate model that cobble rubble is mingled with |
| CN107324712B (en) * | 2017-07-27 | 2019-10-11 | 长安大学 | Very-high performance steel fiber reinforced concrete and preparation method thereof |
| CN107324712A (en) * | 2017-07-27 | 2017-11-07 | 长安大学 | Very-high performance steel fiber reinforced concrete and preparation method thereof |
| CN108585689A (en) * | 2018-05-23 | 2018-09-28 | 浙江大学 | A kind of screw steel fiber ultra-high performance concrete and preparation method |
| CN108585689B (en) * | 2018-05-23 | 2020-02-07 | 浙江大学 | Spiral steel fiber ultra-high performance concrete and preparation method thereof |
| CN109133774A (en) * | 2018-08-10 | 2019-01-04 | 南京理工大学 | Microdilatancy type assembled architecture ultrahigh-performance cement-based grouting material and preparation method |
| CN109437776A (en) * | 2019-01-14 | 2019-03-08 | 湘潭大学 | A kind of high additive hybrid glass powder C190UHPC and preparation method thereof |
| CN109503090A (en) * | 2019-01-14 | 2019-03-22 | 湘潭大学 | A kind of high additive hybrid glass powder C180UHPC and preparation method thereof |
| CN113149571A (en) * | 2021-05-26 | 2021-07-23 | 中交第三公路工程局有限公司 | Cement base material of ultra-high performance concrete and preparation method thereof |
| CN114573296A (en) * | 2022-03-08 | 2022-06-03 | 安徽理工大学 | Preparation method of waste glass powder modified glass fiber reinforced cement mortar |
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