CN113173745A - Anti-freezing cemented sand gravel composite material - Google Patents
Anti-freezing cemented sand gravel composite material Download PDFInfo
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- CN113173745A CN113173745A CN202110444768.8A CN202110444768A CN113173745A CN 113173745 A CN113173745 A CN 113173745A CN 202110444768 A CN202110444768 A CN 202110444768A CN 113173745 A CN113173745 A CN 113173745A
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- 239000004576 sand Substances 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000007710 freezing Methods 0.000 title abstract description 30
- 239000000654 additive Substances 0.000 claims abstract description 49
- 230000000996 additive effect Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000004568 cement Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000010881 fly ash Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 229910021389 graphene Inorganic materials 0.000 claims description 15
- 239000005543 nano-size silicon particle Substances 0.000 claims description 15
- 150000008130 triterpenoid saponins Chemical class 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 10
- 108010053481 Antifreeze Proteins Proteins 0.000 claims 1
- 230000002528 anti-freeze Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 67
- 238000002156 mixing Methods 0.000 description 38
- 239000002956 ash Substances 0.000 description 21
- 241000609240 Ambelania acida Species 0.000 description 16
- 239000010905 bagasse Substances 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- 238000003756 stirring Methods 0.000 description 12
- 241000209094 Oryza Species 0.000 description 11
- 235000007164 Oryza sativa Nutrition 0.000 description 11
- 230000008014 freezing Effects 0.000 description 11
- 235000009566 rice Nutrition 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 238000010257 thawing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004567 concrete Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000010903 husk Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 229930182493 triterpene saponin Natural products 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of building materials, and particularly relates to an anti-freezing type cemented sand gravel composite material. The composite material comprises the following raw materials in parts by weight: 60-100 parts of cement, 10-30 parts of fly ash, 120 parts of 100-water, 650 parts of 600-sand, 900 parts of 850-pebble with the diameter of 20-40mm, 600 parts of 550-pebble with the diameter of 5-20mm and an additive, wherein the additive accounts for 1-3.4% of the total amount of the raw materials. The composite material prepared by the formula can be used for site construction, and has excellent compressive resistance and frost resistance and durability.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to an anti-freezing type cemented sand gravel composite material.
Background
At present, the existing dams in China have larger occupation ratios, namely earth-rock dams and concrete dams commonly used internationally, wherein the earth-rock dams are relatively economic but have the risk of overtopping and breaking, and the concrete dams have relatively higher safety but high manufacturing cost and high foundation requirements. With the development of hydraulic engineering construction, the cemented dam is a dam type between an earth-rock dam and a concrete dam, has short construction period, low comprehensive cost, high reliability, strong overload capacity, local material, and low requirement on construction environment, and can be completed by simple mixing, spreading, vibration rolling or pouring and vibrating. At present, the cemented dam is constructed by cementing granular materials such as sand gravel, rock-fill, rock-block and the like by cementing materials such as cement, mortar, concrete and the like, so the cemented dam is also called as a cemented granular material dam. However, the gelled gravel material has lower strength, poor impermeability and is easily affected by freeze-thaw damage compared with the conventional concrete due to less cement consumption.
In order to improve the frost resistance of the gelled sand gravel, the frost resistance of the gelled sand gravel can be improved by selecting cement varieties, controlling a water-cement ratio, selecting aggregates with high particle hardness and few gaps and using an additive, wherein a water reducing agent and an air entraining agent are used as the additive and are a common means for people, but in practical application, although the frost resistance is improved by adding a certain amount of the additive compared with a material without the additive, the mass loss rate is still high, and the frost resistance effect is not good.
Disclosure of Invention
Aiming at the defects and problems of unsatisfactory anti-freezing effect of the conventional gelled sand gravel material, the invention provides an anti-freezing type gelled gravel material capable of improving the anti-freezing property and a preparation process thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: an anti-freezing cemented sand gravel composite material comprises the following raw materials in parts by weight: 60-100 parts of cement, 10-30 parts of fly ash, 120 parts of 100-water, 650 parts of 600-sand, 900 parts of 850-pebble with the diameter of 20-40mm, 600 parts of 550-pebble with the diameter of 5-20mm and an additive, wherein the additive accounts for 1-3.4% of the total amount of the raw materials.
The anti-freezing cemented sand and gravel composite material comprises 0.004-0.012% of sodium dodecyl sulfate, 0.04-0.12% of triterpenoid saponin, 0.02-0.06% of graphene oxide, 0.5-2.0% of nano silicon powder and 0.4-1.2% of a water reducing agent.
The anti-freezing cemented sand gravel composite material comprises the following raw materials in parts by weight: 70 parts of cement, 10-30 parts of fly ash, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the additive accounts for 1.04 percent of the total amount of the raw materials.
The anti-freezing cemented sand gravel composite material comprises 0.004% of sodium dodecyl sulfate, 0.04% of triterpenoid saponin, 0.06% of graphene oxide, 0.5% of nano silicon powder and 0.4% of a water reducing agent.
The invention also provides a preparation method of the anti-freezing gelled sand gravel composite material, which comprises the following steps:
(1) weighing the raw materials according to the parts ratio, adding pebbles and river sand into a stirrer according to the material ratio, performing dry stirring for 10-20s, adding cement and fly ash into the stirrer, and continuing to perform dry stirring for 30 s;
(2) and uniformly mixing the additive and water to obtain a mixed solution, adding the mixed solution into a stirrer, and wet-stirring for 3-4min to obtain the gelled sand gravel composite material.
The invention has the beneficial effects that: according to the invention, the water-cement ratio and the additive amount of the additive are strictly controlled through an orthogonal test, so that the optimal raw material part ratio, the optimal additive component and the optimal additive content are obtained, and the prepared gelled gravel material has obviously better freezing resistance and compressive strength after a freeze-thaw test.
Drawings
FIG. 1 is a graph of relative viscoelastic modulus of a gelled sand and gravel composite material of the present invention aged 25, 50, 75, and 100 times for 28d freeze-thaw.
FIG. 2 is a graph of relative viscoelastic modulus of a gelled sand gravel composite material of the present invention aged 90d for 25, 50, 75, and 100 freeze-thaw cycles.
FIG. 3 is a graph of relative viscoelastic modulus of a gelled sand and gravel composite of the invention aged 180d for 25, 50, 75, and 100 freeze-thaw cycles.
FIG. 4 is a graph of mass loss rates of the gelled sand and gravel composites of the present invention aged 25, 50, 75, and 100 times for 28d freeze-thaw.
FIG. 5 is a graph of mass loss rate of gelled sand and gravel composites of the present invention aged 90d for 25, 50, 75, and 100 freeze-thaw cycles.
FIG. 6 is a graph of mass loss rates of gelled sand and gravel composites of the present invention aged 180d at 25, 50, 75, and 100 freeze-thaw cycles.
Detailed Description
The invention is further illustrated with reference to the following figures and examples. The materials used in the test of the invention are all products of the same batch.
Example 1: the embodiment provides an anti-freezing gelled sand gravel composite material which comprises, by weight, 80 parts of cement, 20 parts of fly ash, 100 parts of water, 600 parts of sand, 860 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m through the additive, the sand rate is 29.4%, the addition amount accounts for 1.044% of the total amount of the raw materials, and the anti-freezing gelled sand gravel composite material comprises, by weight, 0.004% of sodium dodecyl sulfate, 0.08% of triterpene saponin, 0.06% of graphene oxide, 0.50% of nano silicon powder and 0.40% of a polycarboxylic acid water reducer.
The preparation method comprises the following steps:
(1) adding pebbles and river sand into a stirrer according to the material ratio, dry-stirring for 15s, adding cement and fly ash into the stirrer, and continuously dry-stirring for 30s
(2) And mixing the additive and water to obtain a mixed solution, shaking and uniformly mixing to fully dissolve the additive, wherein macroscopic particles do not exist.
(3) And adding the admixture mixed liquor into a stirrer, and wet-stirring for 180s to obtain the gelled gravel material.
Example 2: the embodiment provides an anti-freezing gelled gravel composite material which comprises, by weight, 60 parts of cement, 10 parts of fly ash, 110 parts of water, 650 parts of sand, 850 parts of 20-40mm pebbles, 550 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the gravel is 2350kg/m through the additive, the sand rate is 31.7%, and the addition amount accounts for 1.464% of the total amount of the raw materials, wherein the mixing amount of sodium dodecyl sulfate is 0.004%, the mixing amount of triterpenoid saponin is 0.12%, the mixing amount of graphene oxide is 0.04%, the mixing amount of nano silicon powder is 0.5%, and the mixing amount of a polycarboxylic acid water reducer is 0.80%.
Example 3: the embodiment provides an anti-freezing gelled sand gravel composite material which comprises, by weight, 60 parts of cement, 10 parts of fly ash, 120 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles, 600 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m of the additive through a method of planting the additive, the sand rate is 29.9%, and the addition amount accounts for 2.268% of the total amount of the raw materials, wherein the addition amount of the sodium dodecyl sulfate is 0.008%, the addition amount of the triterpenoid saponin is 0.04%, the addition amount of the graphene oxide is 0.02%, the addition amount of the nano silicon powder is 1.0%, and the addition amount of the polycarboxylic acid water reducer is 1.2%.
Example 4: the embodiment provides an anti-freezing gelled sand gravel composite material which comprises, by weight, 80 parts of cement, 20 parts of fly ash, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m of the additive, the sand rate is 30.1%, and the addition amount accounts for 3.328% of the total amount of the raw materials, wherein the mixing amount of sodium dodecyl sulfate is 0.008%, the mixing amount of triterpene saponin is 0.08%, the mixing amount of graphene oxide is 0.04%, the mixing amount of nano silicon powder is 2.0%, and the mixing amount of a polycarboxylic acid water reducer is 1.2%.
Example 5: the gelled gravel material of the embodiment is composed of the following raw materials in parts by weight: 70 parts of cement, 20 parts of fly ash, 20 parts of rice hull ash, 5 parts of bagasse, 10 parts of bagasse ash, 10 parts of diatomite, 110 parts of water, 630 parts of sand, 900 parts of 20-40mm pebbles, 600 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m, the sand rate is 29.6%, and the additive accounts for 0.96% of the total amount of the raw materials, wherein the mixing amount of the triterpenoid saponin is 0.04%, the mixing amount of the graphene oxide is 0.02%, the mixing amount of the nano silicon powder is 0.50%, and the mixing amount of the polycarboxylic acid water reducer is 0.40%.
(1) Adding pebbles and river sand into a stirrer according to the material ratio, performing dry stirring for 15s, adding cement, fly ash, rice hull ash, bagasse ash and diatomite into the stirrer, and continuing to perform dry stirring for 30 s.
(2) And mixing the additive and water to obtain a mixed solution, shaking and uniformly mixing to fully dissolve the additive, wherein macroscopic particles do not exist.
(3) And adding the admixture mixed liquor into a stirrer, and wet-stirring for 180s to obtain the gelled gravel material.
Example 6: the gelled gravel material of the embodiment is composed of the following raw materials in parts by weight: 70 parts of cement, 20 parts of fly ash, 10 parts of rice hull ash, 8 parts of bagasse, 10 parts of bagasse ash, 15 parts of diatomite, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m, the sand rate is 30.1%, and the additive accounts for 1.52% of the total amount of the raw materials, wherein the mixing amount of the triterpenoid saponin is 0.08%, the mixing amount of the graphene oxide is 0.04%, the mixing amount of the nano silicon powder is 0.50%, and the mixing amount of the polycarboxylic acid water reducer is 0.40%.
Example 7: the embodiment provides an anti-freezing gelled gravel composite material which comprises, by weight, 70 parts of cement, 30 parts of fly ash, 100 parts of water, 600 parts of sand, 900 parts of 20-40mm pebbles, 550 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the gravel is 2350kg/m through the additive, the sand rate is 29.2%, and the addition amount accounts for 2.295% of the total amount of the raw materials, wherein the mixing amount of sodium dodecyl sulfate is 0.012%, the mixing amount of triterpene saponin is 0.12%, the mixing amount of graphene oxide is 0.02%, the mixing amount of nano silicon powder is 2.0%, and the mixing amount of a polycarboxylic acid water reducer is 0.4%.
Example 8: the gelled gravel material of the embodiment is composed of the following raw materials in parts by weight: 70 parts of cement, 20 parts of fly ash, 30 parts of rice hull ash, 10 parts of bagasse, 5 parts of bagasse ash, 10 parts of diatomite, 120 parts of water, 650 parts of sand, 860 parts of 20-40mm pebbles, 600 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m, the sand rate is 30.4%, and the additive accounts for 2.54% of the total amount of the raw materials, wherein the mixing amount of the triterpenoid saponin is 0.08%, the mixing amount of the graphene oxide is 0.06%, the mixing amount of the nano silicon powder is 2.0%, and the mixing amount of the polycarboxylic acid water reducer is 0.4%.
Example 9: the embodiment provides an anti-freezing gelled gravel composite material which comprises, by weight, 70 parts of cement, 30 parts of fly ash, 120 parts of water, 650 parts of sand, 850 parts of 20-40mm pebbles, 600 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the gravel is 2350kg/m, the sand rate is 31%, and the additive accounts for 1.892% of the total amount of the raw materials, wherein the sodium dodecyl sulfate is 0.012%, the triterpenoid saponin content is 0.04%, the graphene oxide content is 0.04%, the nano silicon powder content is 1.0%, and the polycarboxylic acid water reducer content is 0.8%.
Example 10: the gelled gravel material of the embodiment is composed of the following raw materials in parts by weight: 80 parts of cement, 10 parts of fly ash, 20 parts of rice hull ash, 10 parts of bagasse, 5 parts of bagasse ash, 10 parts of diatomite, 100 parts of water, 630 parts of sand, 850 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the apparent density of the sand gravel is 2350kg/m, the sand rate is 30.6%, and the additive accounts for 1.38% of the total amount of the raw materials, wherein the mixing amount of the triterpenoid saponin is 0.04%, the mixing amount of the graphene oxide is 0.04%, the mixing amount of the nano silicon powder is 0.50%, and the mixing amount of the polycarboxylic acid water reducer is 0.80%.
Comparative example 1: the gelled gravel material of the comparative example consists of the following raw materials in parts by weight: 70 parts of cement, 20 parts of fly ash, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles and 580 parts of 5-20mm small pebbles, and no additive is added.
Adding pebbles and river sand into a stirrer according to the proportion, dry-stirring for 15s, adding cement and fly ash into the stirrer, continuously dry-stirring for 30s, adding water into the stirrer, and wet-stirring for 180s to obtain the gelled gravel material.
Comparative example 2: the gelled gravel material of the comparative example consists of the following raw materials in parts by weight: 70 parts of cement, 20 parts of fly ash, 20 parts of rice hull ash, 5 parts of bagasse, 10 parts of bagasse ash, 10 parts of diatomite, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles and 580 parts of 5-20mm small pebbles, and no additive is added.
Adding pebbles and river sand into a stirrer according to a ratio, dry-mixing for 15s, adding cement, fly ash, rice hull ash, bagasse ash and diatomite into the stirrer, continuously dry-mixing for 30s, and adding water into the stirrer, and wet-mixing for 180s to obtain the gelled gravel material.
And (3) performance testing:
firstly, the gelled gravel materials prepared in examples 1-10 and comparative example are subjected to a rapid freeze-thaw test, and the relative dynamic elastic modulus and the mass loss rate of the samples of each group are measured after 25, 50, 75 and 100 times of rapid freeze-thawing for the age of 28d, 90d and 180d of the gelled gravel of the groups respectively. The test block forming and maintaining method refers to the results of the hydraulic roller compacted concrete test protocol (DLT 5433-2009) and the hydraulic concrete test protocol (SL 352-2006) shown in the figure 1 and the figure 2.
As can be seen from FIG. 1, the relative dynamic elastic modulus of the test pieces prepared by the gelled gravel materials of examples 1-10 after different freezing and thawing is higher than that of comparative examples 1 and 2, which shows that the freezing resistance is obviously improved after the admixture is added. The frost resistance of the examples 5, 6, 8 and 10 is obviously better than that of other examples, which shows that the addition of rice husk ash, bagasse ash and other components is beneficial to improving the frost resistance of the gelled sand gravel, because the nano silicon powder, the rice husk ash and the bagasse ash adopted by the invention can be mixed with Ca (OH)2The reaction generates hydrated calcium silicate, so that the water filling degree of the gelled gravel material is reduced, the gaps in the slurry are filled, the number of the gaps is reduced, and the compactness of the material is improved; the adopted bagasse can effectively increase the contact area with the cement paste, is beneficial to bonding the fiber and the cement-based material, and can enhance the strength; the surface of the adopted graphene oxide has a large number of oxygen-containing functional groups, so that adsorption points are provided for cement hydration, cement solidification can be accelerated, and the frost resistance of the material is comprehensively improved.
Secondly, in order to further verify the freezing resistance of the gelled sand gravel composite material, the gelled sand gravel composite materials prepared in examples 1, 3, 6, 9 and 1 are used as test objects, a rapid freezing and thawing test is carried out according to the relevant regulations of the test method standard of the long-term performance and durability of common concrete (GB/T50082-2009) for rapid freezing and thawing, and the compression resistance values of the above groups of composite materials before and after 50 times of freezing and thawing in the 90d age period are measured. The results are shown in Table 1.
TABLE 1 compression resistance values before and after 90 d-age freezing and thawing of different groups
| Number of freeze thawing | Comparative example 1 | Example 1 | Example 3 | Example 6 | Example 9 |
| 0 | 8.6 | 12.6 | 10.5 | 14 | 11.9 |
| 50 | 2.6 | 11.5 | 8.4 | 13.2 | 10.5 |
As can be seen from Table 1, the test pieces without the additives are basically in frost crack damage after being frozen and thawed for 50 times; after the admixture is added, the freezing resistance is improved, which shows that the freezing resistance of the test piece can be obviously improved by adding the admixture; the compression resistance value of the frozen and thawed mixture added with the components such as the rice husk ash and the bagasse ash is not greatly different from that of the mixture before freezing and thawing, which shows that the frost resistance and the compression strength of the gelled gravel material can be obviously improved by adding the components such as the rice husk ash.
Claims (4)
1. The utility model provides an anti-freeze type cemented sand gravel combined material which characterized in that: the feed comprises the following raw materials in parts by weight: 60-100 parts of cement, 10-30 parts of fly ash, 120 parts of 100-water, 650 parts of 600-sand, 900 parts of 850-pebble with the diameter of 20-40mm, 600 parts of 550-pebble with the diameter of 5-20mm and an additive, wherein the additive accounts for 1-3.4% of the total amount of the raw materials.
2. The freeze resistant cementitious sand and gravel composite of claim 1, wherein: the additive comprises 0.004-0.012% of sodium dodecyl sulfate, 0.04-0.12% of triterpenoid saponin, 0.02-0.06% of graphene oxide, 0.5-2.0% of nano silicon powder and 0.4-1.2% of a water reducing agent.
3. The freeze resistant cementitious sand and gravel composite of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 70 parts of cement, 10-30 parts of fly ash, 110 parts of water, 630 parts of sand, 880 parts of 20-40mm pebbles, 580 parts of 5-20mm small pebbles and an additive, wherein the additive accounts for 1.04 percent of the total amount of the raw materials.
4. The freeze resistant cementitious sand and gravel composite of claim 1, wherein: the additive comprises 0.004% of sodium dodecyl sulfate, 0.04% of triterpenoid saponin, 0.06% of graphene oxide, 0.5% of nano silicon powder and 0.4% of a water reducing agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114368944A (en) * | 2021-12-24 | 2022-04-19 | 中国水电建设集团十五工程局有限公司 | Concrete of soft rock aggregate for rock-fill dam and preparation method thereof |
| CN114716203A (en) * | 2022-03-25 | 2022-07-08 | 桐庐强基新型建材有限公司 | Concrete solid brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150225291A1 (en) * | 2012-09-25 | 2015-08-13 | Yara International Asa | Antifreeze composition for producing a durable concrete in cold temperature conditions |
| CN106365529A (en) * | 2016-08-25 | 2017-02-01 | 华北水利水电大学 | Cementing sand gravel material having excellent anti-freeze property and preparation method thereof |
| CN108101040A (en) * | 2017-12-19 | 2018-06-01 | 佛山科学技术学院 | A kind of low cost graphene oxide mortar and preparation method thereof |
| CN108439918A (en) * | 2018-05-22 | 2018-08-24 | 暨南大学 | A kind of high performance concrete and preparation method thereof for using rice hull ash, silicon ash and graphene oxide to be prepared for admixture |
-
2021
- 2021-04-24 CN CN202110444768.8A patent/CN113173745A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150225291A1 (en) * | 2012-09-25 | 2015-08-13 | Yara International Asa | Antifreeze composition for producing a durable concrete in cold temperature conditions |
| CN106365529A (en) * | 2016-08-25 | 2017-02-01 | 华北水利水电大学 | Cementing sand gravel material having excellent anti-freeze property and preparation method thereof |
| CN108101040A (en) * | 2017-12-19 | 2018-06-01 | 佛山科学技术学院 | A kind of low cost graphene oxide mortar and preparation method thereof |
| CN108439918A (en) * | 2018-05-22 | 2018-08-24 | 暨南大学 | A kind of high performance concrete and preparation method thereof for using rice hull ash, silicon ash and graphene oxide to be prepared for admixture |
Non-Patent Citations (1)
| Title |
|---|
| 余丽武主编: "《土木工程材料》", 31 August 2020 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114368944A (en) * | 2021-12-24 | 2022-04-19 | 中国水电建设集团十五工程局有限公司 | Concrete of soft rock aggregate for rock-fill dam and preparation method thereof |
| CN114716203A (en) * | 2022-03-25 | 2022-07-08 | 桐庐强基新型建材有限公司 | Concrete solid brick and preparation method thereof |
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