PCCP concrete material and preparation method thereof

Abstract

The invention discloses a PCCP (prestressed concrete cylinder pipe) concrete material, which is prepared from the following raw materials in parts by weight: 350 to 360 parts of cement, 60 to 65 parts of fly ash, 720 to 780 parts of sand, 1120 to 1170 parts of gravel, 125 to 130 parts of water and 5 to 5.6 parts of additives. According to the PCCP concrete material disclosed by the invention, the cement is matched with the raw materials such as the fly ash, the sand and the gravels, and the adjusted whisker agent and the wollastonite-doped modifier are added for mutual blending and joint synergism, so that the strength, the slump and the impermeability of the product are harmoniously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete materials, and in particular to a PCCP concrete material and a preparation method thereof. Background Art

[0002] The core concrete forming of PCCP pipe is divided into two main production process types according to its model characteristics: one is the horizontal centrifugal forming process, which is used to produce PCCPL type prestressed steel cylinder concrete pipe; the other is the vertical pouring forming process, which is used to produce PCCPE type prestressed steel cylinder concrete pipe.

[0003] The existing PCCP concrete materials have poor strength performance, and the slump and impermeability of the products are also poor. It is difficult to achieve coordinated improvements in strength, slump and impermeability of the products, which limits the efficiency of product use. Summary of the invention

[0004] In view of the defects of the prior art, the object of the present invention is to provide a PCCP concrete material and a preparation method thereof to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a PCCP concrete material, comprising the following raw materials in parts by weight:

[0007] 350-360 parts of cement, 60-65 parts of fly ash, 720-780 parts of sand, 1120-1170 parts of crushed stone, 125-130 parts of water, 5-5.6 parts of admixture;

[0008] The concrete material is also added with 4-7 parts of a regulating whisker agent and 2-5 parts of a modifier doped with wollastonite.

[0009] Preferably, the crushed stone is 5-25 mm; the admixture is polycarboxylate water reducer; the fly ash is Class I F fly ash from Tieling Power Plant

[0010] Preferably, the preparation method of the adjusted whisker agent is:

[0011] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0012] S02: adding 2-4 parts of yttrium nitrate solution to 4-7 parts of chitosan solution, and then adding 2-3 parts of graphene agent and 1-3 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0013] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0014] Preferably, the irradiation power of the irradiation treatment is 350-400W, the irradiation time is 20-30min; and the mass fraction of the sodium silicate solution is 4-7%.

[0015] Preferably, the mass fraction of the yttrium nitrate solution is 2-5%; the mass fraction of the chitosan solution is 4-7%.

[0016] Preferably, the preparation method of the graphene agent is:

[0017] 4-7 parts of graphene and 1-3 parts of silane coupling agent are added to 5-8 parts of sodium citrate solution, and then 2-3 parts of hydroxyapatite and 1-2 parts of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0018] Preferably, the mass fraction of the sodium citrate solution is 4-6%; and the silane coupling agent is silane coupling agent KH560.

[0019] Preferably, the preparation method of the wollastonite-doped modifier is:

[0020] S101: adding 2-4 parts of stearic acid and 1-3 parts of nano-silica sol to 5-8 parts of 4-6% by mass sodium lignin sulfonate solution, and then adding 2-3 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0021] S102: preheat wollastonite at 60-65°C for 5-10 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0022] Preferably, the stirring speed of the stirring modification treatment is 450-550 r / min, and the stirring time is 20-30 min.

[0023] The present invention also provides a method for preparing a PCCP concrete material, comprising the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The PCCP concrete material of the present invention adopts cement, fly ash, sand, crushed stone and other raw materials, and is mixed with a regulated whisker agent and a modifier doped with wollastonite to enhance the synergy and coordinately improve the strength, slump and anti-seepage performance of the product. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0028] 350-360 parts of cement, 60-65 parts of fly ash, 720-780 parts of sand, 1120-1170 parts of crushed stone, 125-130 parts of water, 5-5.6 parts of admixture;

[0029] The concrete material is also added with 4-7 parts of a regulating whisker agent and 2-5 parts of a modifier doped with wollastonite.

[0030] The crushed stone in this embodiment is 5-25 mm; the admixture is polycarboxylate water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0031] The preparation method of the adjusted whisker agent of this embodiment is:

[0032] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0033] S02: adding 2-4 parts of yttrium nitrate solution to 4-7 parts of chitosan solution, and then adding 2-3 parts of graphene agent and 1-3 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0034] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0035] The irradiation power of the irradiation treatment in this embodiment is 350-400W, and the irradiation time is 20-30min; the mass fraction of the sodium silicate solution is 4-7%.

[0036] The mass fraction of the yttrium nitrate solution in this embodiment is 2-5%; the mass fraction of the chitosan solution is 4-7%.

[0037] The preparation method of the graphene agent of this embodiment is:

[0038] 4-7 parts of graphene and 1-3 parts of silane coupling agent are added to 5-8 parts of sodium citrate solution, and then 2-3 parts of hydroxyapatite and 1-2 parts of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0039] The mass fraction of the sodium citrate solution in this embodiment is 4-6%; the silane coupling agent is silane coupling agent KH560.

[0040] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0041] S101: adding 2-4 parts of stearic acid and 1-3 parts of nano-silica sol to 5-8 parts of 4-6% by mass sodium lignin sulfonate solution, and then adding 2-3 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0042] S102: preheat wollastonite at 60-65°C for 5-10 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0043] The stirring speed of the stirring modification treatment in this embodiment is 450-550 r / min, and the stirring time is 20-30 min.

[0044] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0045] Example 1.

[0046] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0047] 350 parts of cement, 60 parts of fly ash, 720 parts of sand, 1120 parts of crushed stone, 125 parts of water, 5 parts of admixture;

[0048] The concrete material also contains 4 parts of a regulated whisker agent and 2 parts of a modifier doped with wollastonite.

[0049] The crushed stone in this embodiment is 5-25 mm; the admixture is polycarboxylate water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0050] The preparation method of the adjusted whisker agent of this embodiment is:

[0051] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0052] S02: adding 2 parts of yttrium nitrate solution to 4 parts of chitosan solution, and then adding 2 parts of graphene agent and 1 part of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0053] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0054] The irradiation power of the irradiation treatment in this embodiment is 350W, and the irradiation time is 20min; the mass fraction of the sodium silicate solution is 4%.

[0055] The mass fraction of the yttrium nitrate solution in this embodiment is 2%; the mass fraction of the chitosan solution is 4%.

[0056] The preparation method of the graphene agent of this embodiment is:

[0057] 4 parts of graphene and 1 part of silane coupling agent are added to 5 parts of sodium citrate solution, and then 2 parts of hydroxyapatite and 1 part of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0058] The mass fraction of the sodium citrate solution in this embodiment is 4%; the silane coupling agent is silane coupling agent KH560.

[0059] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0060] S101: adding 2 parts of stearic acid and 1 part of nano-silica sol to 5 parts of 4% sodium lignin sulfonate solution, and then adding 2 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0061] S102: preheat wollastonite at 60°C for 5 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it and dry it to obtain a modifier doped with wollastonite.

[0062] The stirring speed of the stirring modification treatment in this embodiment is 450 r / min, and the stirring time is 20 min.

[0063] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0064] Example 2.

[0065] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0066] 360 parts of cement, 65 parts of fly ash, 780 parts of sand, 1170 parts of crushed stone, 130 parts of water, 5.6 parts of admixture;

[0067] The concrete material also contains 7 parts of a regulated whisker agent and 5 parts of a modifier doped with wollastonite.

[0068] The crushed stone in this embodiment is 25 mm; the admixture is polycarboxylate water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0069] The preparation method of the adjusted whisker agent of this embodiment is:

[0070] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0071] S02: adding 4 parts of yttrium nitrate solution to 7 parts of chitosan solution, and then adding 3 parts of graphene agent and 3 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0072] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0073] The irradiation power of the irradiation treatment in this embodiment is 400 W, and the irradiation time is 30 min; the mass fraction of the sodium silicate solution is 7%.

[0074] The mass fraction of the yttrium nitrate solution in this embodiment is 5%; the mass fraction of the chitosan solution is 7%.

[0075] The preparation method of the graphene agent of this embodiment is:

[0076] 7 parts of graphene and 3 parts of silane coupling agent are added to 8 parts of sodium citrate solution, and then 3 parts of hydroxyapatite and 2 parts of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0077] The mass fraction of the sodium citrate solution in this embodiment is 6%; the silane coupling agent is silane coupling agent KH560.

[0078] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0079] S101: adding 4 parts of stearic acid and 3 parts of nano-silica sol to 8 parts of 6% sodium lignin sulfonate solution, and then adding 3 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0080] S102: preheat wollastonite at 65°C for 10 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0081] The stirring speed of the stirring modification treatment in this embodiment is 550 r / min, and the stirring time is 30 min.

[0082] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0083] Example 3.

[0084] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0085] 355 parts of cement, 62.5 parts of fly ash, 750 parts of sand, 1150 parts of crushed stone, 127 parts of water, 5.3 parts of admixture;

[0086] The concrete material also contains 5.5 parts of a regulated whisker agent and 3.5 parts of a modifier doped with wollastonite.

[0087] The crushed stone in this embodiment is 20 mm; the admixture is polycarboxylic acid water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0088] The preparation method of the adjusted whisker agent of this embodiment is:

[0089] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0090] S02: adding 3 parts of yttrium nitrate solution to 5.5 parts of chitosan solution, and then adding 2.5 parts of graphene agent and 2 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0091] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0092] The irradiation power of the irradiation treatment in this embodiment is 370W, and the irradiation time is 25min; the mass fraction of the sodium silicate solution is 5.5%.

[0093] The mass fraction of the yttrium nitrate solution in this embodiment is 3.5%; the mass fraction of the chitosan solution is 5.5%.

[0094] The preparation method of the graphene agent of this embodiment is:

[0095] 5.5 parts of graphene and 2 parts of silane coupling agent were added to 6.5 parts of sodium citrate solution, and then 2.5 parts of hydroxyapatite and 1.5 parts of lanthanum oxide were added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling was completed, the mixture was washed with water and dried to obtain a graphene agent.

[0096] The mass fraction of the sodium citrate solution in this embodiment is 5%; the silane coupling agent is silane coupling agent KH560.

[0097] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0098] S101: adding 3 parts of stearic acid and 2 parts of nano-silica sol to 6.5 parts of 5% sodium lignin sulfonate solution, and then adding 2.5 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0099] S102: preheat wollastonite at 62.5°C for 7.5 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0100] The stirring speed of the stirring modification treatment in this embodiment is 500 r / min, and the stirring time is 25 min.

[0101] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0102] Example 4.

[0103] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0104] 352 parts of cement, 62 parts of fly ash, 725 parts of sand, 1125 parts of crushed stone, 128 parts of water, 5.2 parts of admixture;

[0105] The concrete material also contains 5 parts of a regulated whisker agent and 3 parts of a modifier doped with wollastonite.

[0106] The crushed stone in this embodiment is 10 mm; the admixture is polycarboxylic acid water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0107] The preparation method of the adjusted whisker agent of this embodiment is:

[0108] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0109] S02: adding 3 parts of yttrium nitrate solution to 5 parts of chitosan solution, and then adding 2 parts of graphene agent and 2 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0110] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0111] The irradiation power of the irradiation treatment in this embodiment is 360W, and the irradiation time is 22min; the mass fraction of the sodium silicate solution is 5%.

[0112] The mass fraction of the yttrium nitrate solution in this embodiment is 3%; the mass fraction of the chitosan solution is 5%.

[0113] The preparation method of the graphene agent of this embodiment is:

[0114] 5 parts of graphene and 2 parts of silane coupling agent are added to 6 parts of sodium citrate solution, and then 2 parts of hydroxyapatite and 1 part of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0115] The mass fraction of the sodium citrate solution in this embodiment is 5%; the silane coupling agent is silane coupling agent KH560.

[0116] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0117] S101: adding 3 parts of stearic acid and 2 parts of nano-silica sol to 6 parts of 5% by mass sodium lignin sulfonate solution, and then adding 2 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0118] S102: preheat wollastonite at 62° C. for 6 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0119] The stirring speed of the stirring modification treatment in this embodiment is 460 r / min, and the stirring time is 22 min.

[0120] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0121] Example 5.

[0122] A PCCP concrete material of this embodiment includes the following raw materials in parts by weight:

[0123] 358 parts of cement, 64 parts of fly ash, 768 parts of sand, 1150 parts of crushed stone, 128 parts of water, 5.5 parts of admixture;

[0124] The concrete material also contains 6 parts of adjusted whisker agent and 3 parts of wollastonite-doped modifier.

[0125] The crushed stone in this embodiment is 20 mm; the admixture is polycarboxylic acid water reducer; the fly ash is Class I F fly ash from Tieling Power Plant;

[0126] The preparation method of the adjusted whisker agent of this embodiment is:

[0127] S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier;

[0128] S02: adding 3 parts of yttrium nitrate solution to 5 parts of chitosan solution, and then adding 3 parts of graphene agent and 2 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution;

[0129] S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

[0130] The irradiation power of the irradiation treatment in this embodiment is 365W, and the irradiation time is 28min; the mass fraction of the sodium silicate solution is 6%.

[0131] The mass fraction of the yttrium nitrate solution in this embodiment is 3%; the mass fraction of the chitosan solution is 6%.

[0132] The preparation method of the graphene agent of this embodiment is:

[0133] 6 parts of graphene and 2 parts of silane coupling agent are added to 6 parts of sodium citrate solution, and then 3 parts of hydroxyapatite and 2 parts of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

[0134] The mass fraction of the sodium citrate solution in this embodiment is 5%; the silane coupling agent is silane coupling agent KH560.

[0135] The preparation method of the modifier doped with wollastonite of the present embodiment is as follows:

[0136] S101: adding 3 parts of stearic acid and 2 parts of nano-silica sol to 7 parts of 6% sodium lignin sulfonate solution, and then adding 3 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution;

[0137] S102: preheat wollastonite at 64°C for 8 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After the stirring is completed, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

[0138] The stirring speed of the stirring modification treatment in this embodiment is 530 r / min, and the stirring time is 27 min.

[0139] A method for preparing a PCCP concrete material of the present embodiment comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

[0140] Comparative Example 1.

[0141] The difference from Example 3 is that no regulating whisker agent is added.

[0142] Comparative Example 2.

[0143] The difference from Example 3 is that the whisker modifier in the preparation of the adjusted whisker agent is replaced by calcium sulfate whiskers.

[0144] Comparative Example 3.

[0145] The difference from Example 3 is that no conditioning liquid treatment is used in the preparation of the conditioned whisker agent or the preparation of the whisker modifier.

[0146] Comparative Example 4.

[0147] The difference from Example 3 is that no graphene agent is added to the regulating solution.

[0148] Comparative Example 5.

[0149] The difference from Example 3 is that the graphene agent is replaced by graphene.

[0150] Comparative Example 6.

[0151] The difference from Example 3 is that no modifier for doping wollastonite is added.

[0152] Comparative Example 7.

[0153] The difference from Example 3 is that no modifying liquid treatment is used in the preparation of the modifier doped with wollastonite.

[0154] The performance test results of the products of Examples 1-5 and Comparative Examples 1-7 of the present invention are as follows.

[0155]

[0156] It can be seen from Examples 1-5 and Comparative Examples 1-7 that the products of Examples 1-5 of the present invention have excellent 28d compressive strength, and at the same time, the slump and chloride ion content have significant effects. Without adding the adjusted whisker agent and the modifier doped with wollastonite, the performance of the product deteriorates significantly. The synergistic effect of the two is used, and the product performance effect is most significant;

[0157] In the preparation of the adjusted whisker agent, the whisker modifier is replaced by calcium sulfate whiskers, in the preparation of the adjusted whisker agent, the whisker modifier is not treated with adjusting liquid, the graphene agent is not added to the adjusting liquid, the graphene agent is replaced by graphene, and the modifier doped with wollastonite is not treated with modifying liquid. The performance of the products all have different degrees of deterioration trends. The performance effect of the adjusted whisker agent obtained by the graphene agent obtained by the method of the present invention and the adjusting liquid of the present invention is the most significant. The performance effect of the doped wollastonite modifier treated with the modifying liquid of the present invention is also the most significant.

[0158] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0159] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PCCP concrete material, characterized in that: It includes the following raw materials in parts by weight: 350-360 parts of cement, 60-65 parts of fly ash, 720-780 parts of sand, 1120-1170 parts of crushed stone, 125-130 parts of water, 5-5.6 parts of admixture; The concrete material is also added with 4-7 parts of adjusted whisker agent and 2-5 parts of modifier doped with wollastonite.

2. A PCCP concrete material according to claim 1, characterized in that: The crushed stone is 5-25 mm; the admixture is polycarboxylic acid water reducer; and the fly ash is Class I F fly ash from Tieling Power Plant.

3. A PCCP concrete material according to claim 2, characterized in that: The preparation method of the adjusted whisker agent is: S01: irradiating the calcium sulfate whiskers in a proton irradiation box, and after the irradiation, stirring the irradiated calcium sulfate whiskers in a sufficient amount of sodium silicate solution, and then filtering and drying to obtain a whisker modifier; S02: adding 2-4 parts of yttrium nitrate solution to 4-7 parts of chitosan solution, and then adding 2-3 parts of graphene agent and 1-3 parts of sodium dodecylbenzene sulfonate to mix well to obtain a regulating solution; S03: The whisker modifier and the regulating liquid are mixed in a weight ratio of 5:3 and ball-milled at a ball-milling speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water and dried to obtain a regulated whisker agent.

4. A PCCP concrete material according to claim 3, characterized in that: The irradiation power of the irradiation treatment is 350-400W, and the irradiation time is 20-30min; the mass fraction of the sodium silicate solution is 4-7%.

5. A PCCP concrete material according to claim 3, characterized in that: The mass fraction of the yttrium nitrate solution is 2-5%; the mass fraction of the chitosan solution is 4-7%.

6. A PCCP concrete material according to claim 3, characterized in that: The preparation method of the graphene agent is: 4-7 parts of graphene and 1-3 parts of silane coupling agent are added to 5-8 parts of sodium citrate solution, and then 2-3 parts of hydroxyapatite and 1-2 parts of lanthanum oxide are added and mixed and ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a graphene agent.

7. A PCCP concrete material according to claim 6, characterized in that: The mass fraction of the sodium citrate solution is 4-6%; the silane coupling agent is silane coupling agent KH560.

8. The PCCP concrete material according to claim 1, characterized in that: The preparation method of the modifier doped with wollastonite is as follows: S101: adding 2-4 parts of stearic acid and 1-3 parts of nano-silica sol to 5-8 parts of 4-6% by mass sodium lignin sulfonate solution, and then adding 2-3 parts of silane coupling agent KH550, stirring thoroughly to obtain a modified solution; S102: preheat wollastonite at 60-65°C for 5-10 minutes, then add it into a sufficient amount of modifying liquid and stir it for modification. After stirring, wash it with water, filter it with suction, and dry it to obtain a modifier doped with wollastonite.

9. A PCCP concrete material according to claim 8, characterized in that: The stirring speed of the stirring modification treatment is 450-550 r / min, and the stirring time is 20-30 min.

10. A method for preparing the PCCP concrete material according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: weighing raw materials according to weight, and mixing the raw materials evenly and fully to obtain the concrete material of the present invention.

Images