Construction method for water-stable base crack resistance based on basalt fiber mixture optimization

Abstract

The application discloses a water-stable base anti-cracking construction method based on basalt fiber mixture optimization, which comprises the following steps: providing basalt fiber raw materials, water-stable macadam raw materials, cement and fly ash; carrying out pre-wetting treatment on the basalt fiber raw materials, and dispersing the basalt fiber raw materials after the pre-wetting treatment according to a designed proportion to form basalt fibers; weighing different weight parts of the basalt fibers, the water-stable macadam raw materials, the cement, the fly ash and an additive, and mixing and stirring the same to obtain a mixture; carrying out the paving of the mixture on a road base surface, and carrying out rolling after the paving is completed to form a water-stable base; carrying out curing treatment on the water-stable base; and completing the water-stable base anti-cracking construction; by adding the basalt fibers in the mixture, the water-stable base anti-cracking construction method improves the crack resistance, stability and durability of the water-stable base, and by specifying each step and parameter in the construction process in detail, the stability and reliability of the engineering quality are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of water-stable base construction, and in particular to an anti-cracking construction method for a water-stable base based on optimization of a basalt fiber mixture. Background Art

[0002] Cement-stabilized gravel base, referred to as "water-stable base", is a commonly used road base material. It has the advantages of high strength, good stability, and good durability, and is widely used in projects such as highways, urban roads, and airport runways. In modern highway construction, the water-stable base, as an important component of the highway structure, its performance directly affects the service life of the highway and driving safety. The water-stable base has the following performance characteristics: High strength: The cement stone formed after cement hydration has high strength and can withstand large loads. Good stability: The water-stable base has good stability and is not prone to deformation and settlement. Good durability: The water-stable base has good durability and can be used for a long time. Convenient construction: The construction process of the water-stable base is simple and the construction speed is fast.

[0003] However, traditional road water-stable base layers often develop cracks over time. These cracks not only reduce the road's load-bearing capacity but also allow water to penetrate, further damaging the structural integrity of the base and surface layers, increasing maintenance costs and frequency. Summary of the Invention

[0004] In order to overcome the defects in the existing technology, the present invention provides a water-stable base anti-cracking construction method based on basalt fiber mixture optimization. By adding basalt fiber to the mixture, the crack resistance, stability and durability of the water-stable base are improved.

[0005] In order to achieve the above object, the present invention provides a method for anti-cracking construction of a water-stable base based on optimization of a basalt fiber mixture, comprising:

[0006] Provide basalt fiber raw materials, water-stabilized crushed stone raw materials, cement, and fly ash;

[0007] Pre-wetting the basalt fiber raw material, and dispersing the pre-wetted basalt fiber raw material according to a designed ratio to form basalt fiber;

[0008] Weighing different weight portions of basalt fiber, hydraulically stabilized crushed stone raw material, cement, fly ash and additives and mixing and stirring to obtain a mixture;

[0009] Spread the mixture on the surface of the road base, and roll it after paving to form a water-stable base;

[0010] Carry out health treatment on water-stable base;

[0011] Complete the anti-cracking construction of the water-stable base.

[0012] Preferably, when providing basalt fiber, cement-stabilized crushed stone raw materials, cement, and fly ash, basalt fiber raw materials whose length, diameter, and tensile strength meet the requirements of the specifications are selected, and cement-stabilized crushed stone raw materials whose grading, crushing value, and mud content meet the design requirements are selected.

[0013] Preferably, the water-stabilized crushed stone raw materials include water-stabilized crushed stone, water, slag powder, and lime; the additives include a water reducer, an antifreeze agent, an anti-seepage agent, a retarder, and an anti-cracking agent; when weighing different weight portions of basalt fiber, water-stabilized crushed stone raw materials, cement, fly ash, and additives and mixing and stirring, the weight portions of each material weighed include:

[0014] 950-1000 parts of hydraulically stabilized gravel;

[0015] 3-6 parts of basalt fiber;

[0016] 100-150 parts of cement;

[0017] 50-100 parts of fly ash;

[0018] 130-160 parts water;

[0019] 30-50 parts of slag powder;

[0020] Water reducing agent 0.5-1.0 parts;

[0021] 10-20 parts lime

[0022] 1-3 parts antifreeze

[0023] 1-2 parts of anti-seepage agent;

[0024] Retarder 0.5-1.0 parts;

[0025] 1-3 parts of anti-cracking agent.

[0026] Preferably, a batch mixer is used to mix and stir different weight portions of basalt fiber, water-stabilized crushed stone raw materials, cement, fly ash and additives, and the stirring time is controlled to fully disperse the basalt fiber.

[0027] Preferably, before spreading the mixture on the surface of the road base, the surface of the road base is cleaned to ensure that there is no debris or loose soil on the surface of the road base.

[0028] Preferably, when paving the mixture on the surface of the road base, the paving speed and thickness are controlled.

[0029] Preferably, when rolling after paving is completed, follow the principle of light first then heavy, slow first then fast, so as to ensure dense rolling without leakage or overpressure.

[0030] Preferably, when performing curing treatment on the water-stable base layer, a covering film and watering measures are adopted to keep the surface of the water-stable base layer moist, and the curing time is not less than 7 days.

[0031] Preferably, during the curing treatment of the water-stable base layer, the compaction, flatness and strength indicators of the water-stable base layer are regularly tested.

[0032] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0033] 1) By adding basalt fiber to the mixture, combined with the use of other additives, the crack resistance of the highway water-stable base layer was significantly improved. Basalt fiber has high tensile strength and elastic modulus. When the fibers in the mixture form a network structure, they can effectively restrain the shrinkage and deformation of the base layer, reducing the generation and development of cracks. In addition, the addition of basalt fiber increases the toughness of the mixture, allowing the base layer to better absorb energy when subjected to external loads or temperature changes, thereby reducing cracks caused by stress concentration. This is particularly important during highway operation, as cracks not only affect driving comfort but can also lead to water penetration, further damaging the structural integrity of the base layer and surface layer. Therefore, by improving crack resistance, this method extends the service life of the highway and reduces maintenance costs.

[0034] 2) By specifying each step and parameter in the construction process in detail, the stability and reliability of the project quality were ensured: strict control of mixing time and mixer speed, as well as regular inspection of the mixture, ensured that the basalt fiber was fully mixed with the other materials, avoiding fiber clumping and uneven mixture; precise control of the roller selection, rolling speed, and number of passes ensured that the compaction of the base layer met the design requirements, thereby improving the base layer's bearing capacity and durability. This detailed control ensured that every step of the construction process was effectively managed, reducing human error and improving construction efficiency. Ultimately, these measures combined to significantly improve the strength, stability, and durability of the highway's water-stable base layer, providing solid support for the superstructure and ensuring the quality of the entire highway project. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1The present invention is a flow chart of the anti-cracking construction method of the water-stable base based on the optimization of basalt fiber mixture. DETAILED DESCRIPTION

[0037] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0038] See also Figure 1 As shown, the present invention provides a method for anti-cracking construction of a water-stable base based on optimization of basalt fiber mixture, comprising the following steps:

[0039] Provide basalt fiber raw materials, water-stabilized crushed stone raw materials, cement, and fly ash;

[0040] Pre-wetting the basalt fiber raw material, and dispersing the pre-wetted basalt fiber raw material according to a designed ratio to form basalt fiber;

[0041] Weighing different weight portions of basalt fiber, hydraulically stabilized crushed stone raw material, cement, fly ash and additives and mixing and stirring to obtain a mixture;

[0042] Spread the mixture on the surface of the road base, and roll it after paving to form a water-stable base;

[0043] Carry out health treatment on water-stable base;

[0044] Complete the anti-cracking construction of the water-stable base.

[0045] Example 1

[0046] A method for anti-cracking construction of a water-stable base based on optimization of a basalt fiber mixture, the method comprising the following steps:

[0047] Select high-quality basalt fiber raw materials, ensuring that their length, diameter, tensile strength and other indicators meet the specifications; prepare water-stabilized crushed stone raw materials, ensuring that their gradation, crushing value, mud content and other indicators meet the design requirements; prepare cement, fly ash and other cementitious materials, ensuring their quality;

[0048] The basalt fiber raw materials are pre-wetted to increase their bonding properties with the mixture, and the pre-wetted basalt fiber raw materials are dispersed according to the designed proportion to form basalt fibers and ensure that they are evenly distributed in the mixture;

[0049] Weigh:

[0050] 950 parts by weight of hydraulically stabilized gravel;

[0051] 3 parts by weight of basalt fiber;

[0052] 100 parts by weight of cement;

[0053] 50 parts by weight of fly ash;

[0054] 130 parts by weight of water;

[0055] 30 parts by weight of slag powder;

[0056] 0.5 parts by weight of water reducer;

[0057] 10 parts by weight of lime

[0058] 1 part by weight of antifreeze

[0059] 1 part by weight of an anti-seepage agent;

[0060] 0.5 parts by weight of retarder;

[0061] 1 part by weight of anti-cracking agent, and then ensure that the maximum dry density, optimal moisture content and other parameters of the mixture meet the design requirements;

[0062] Use an intermittent mixer to mix the mixture to ensure uniform mixing, and control the mixing time to ensure that the basalt fiber is fully dispersed;

[0063] Use closed transport vehicles to transport the mixture to the construction site, and pay attention to reducing the segregation and moisture loss of the mixture during transportation;

[0064] Clean the surface of the base layer to ensure that there is no debris or loose soil, and use a paver to spread the mixture, controlling the paving speed and thickness;

[0065] Use appropriate rollers for rolling, following the principle of light first and heavy later, slow first and fast later to ensure compaction without pressure leakage or overpressure;

[0066] After the mixture is rolled, it should be cured immediately by covering it with film, sprinkling water, etc. to keep the surface of the water-stable base moist, and the curing time should be no less than 7 days;

[0067] During the curing period, regularly check the compaction, flatness, strength and other indicators of the water-stable base layer. If any problems are found, deal with them in a timely manner to ensure that the quality of the water-stable base layer meets the requirements.

[0068] The water reducer is one or more of polycarboxylic acid water reducer, naphthalene water reducer, aliphatic water reducer and aminosulfonic acid water reducer.

[0069] Among them, the raw material of basalt fiber is one of clinophyre basalt, amygdalite and andesite.

[0070] Wherein, the antifreeze agent is one or more of calcium chloride, sodium sulfate, ethylene glycol and urea.

[0071] Among them, the anti-seepage agent is one or more of a silane-based waterproofing agent, a polyurea waterproofing agent, a water-based polyurethane waterproofing agent, and an alkyl silicate waterproofing agent.

[0072] The retarder is one or more of molasses, citric acid, phosphate, sodium gluconate and borax.

[0073] Among them, when using an intermittent mixer to mix the mixture, the specific construction conditions are as follows:

[0074] 1) The capacity of the mixer should be at least 500 liters to meet the needs of batch mixing;

[0075] 2) During the mixing process, the mixer speed should be precisely controlled at 35 revolutions per minute, and the mixing time should be strictly controlled at 4 minutes. This is the optimal mixing time determined based on laboratory tests, which can ensure that the basalt fiber is evenly distributed with cementitious materials such as water-stabilized crushed stone, cement, and fly ash, while avoiding fiber agglomeration.

[0076] 3) During the mixing process, the operator should check the color and moisture of the mixture every 30 seconds to ensure that the color of the mixture is consistent, the moisture is moderate, and there are no obvious dry or wet lumps;

[0077] 4) After mixing is completed, 5 samples are immediately taken from different parts for laboratory testing, including the fluidity, compressive strength and fiber dispersion uniformity of the mixture.

[0078] Among them, when using a roller for rolling, the specific construction parameters are as follows:

[0079] The weight of a light roller should be 8-10 tons, the initial compaction speed should be controlled at 1.8 km / h, and it should be rolled twice. Subsequently, a heavy roller should be used, which should weigh 12-15 tons. The re-compaction speed can be increased to 2.2 km / h, and it should be rolled six times. During the rolling process, the edges and corners should be rolled an additional 1-2 times to ensure no leakage. The overlapping width of the roller wheel track should be precisely controlled at 40% of the wheel diameter to achieve uniform compaction effect.

[0080] Among them, when curing after the mixture is rolled, the specific construction measures include the following:

[0081] 1) During the curing period, double-layer plastic film should be used to cover the plants to reduce water evaporation. When the temperature is above 20℃, the frequency of watering should be adjusted to once every 2 hours. When the temperature is below 10℃, the frequency of watering can be appropriately reduced.

[0082] 2) During the curing period, a cordon should be set up around the construction site and full-time personnel should be assigned to guard it to prevent unauthorized vehicles and personnel from entering.

[0083] 3) The curing time is at least 7 days. During this period, the integrity of the covering material and the moisture status of the base layer should be checked every 24 hours, and the curing log should be recorded.

[0084] Among them, when conducting quality inspection during the health preservation period, the specific inspection conditions and parameters are as follows:

[0085] 1) Use a compaction tester to test the compaction of the base layer. The test points should be randomly distributed, and the compaction of each test point should reach more than 98%;

[0086] 2) Use a flatness meter to check the flatness of the base layer to ensure that the deviation does not exceed 5mm;

[0087] 3) Strength testing is carried out by core sampling. The core sampling locations should cover the entire construction area, the number of cores should be no less than 6, and the unconfined compressive strength of each core sample should not be less than 90% of the design strength;

[0088] 4) For parts that fail the inspection, they should be marked immediately, the reasons should be analyzed, and measures should be taken to repair them within 24 hours. After the repair, they should be re-tested until all indicators meet the design requirements.

[0089] It should be noted that during the construction process, special treatment is performed on the joints to ensure that the joints are smooth and tight. At the same time, appropriate materials and methods are used to improve the crack resistance of the joints. After the construction is completed, relevant departments are organized to conduct acceptance.

[0090] Example 2

[0091] A method for anti-cracking construction of a water-stable base based on optimization of a basalt fiber mixture, the method comprising the following steps:

[0092] Select high-quality basalt fiber raw materials, ensuring that their length, diameter, tensile strength and other indicators meet the specifications; prepare water-stabilized crushed stone raw materials, ensuring that their gradation, crushing value, mud content and other indicators meet the design requirements; prepare cement, fly ash and other cementitious materials, ensuring their quality;

[0093] The basalt fiber raw materials are pre-wetted to increase their bonding properties with the mixture, and the pre-wetted basalt fiber raw materials are dispersed according to the designed proportion to form basalt fibers and ensure that they are evenly distributed in the mixture;

[0094] Weigh:

[0095] 1000 parts by weight of hydraulically stabilized gravel;

[0096] 6 parts by weight of basalt fiber;

[0097] 150 parts by weight of cement;

[0098] 100 parts by weight of fly ash;

[0099] 160 parts by weight of water;

[0100] 50 parts by weight of slag powder;

[0101] 1.0 parts by weight of water reducer;

[0102] 20 parts by weight of lime

[0103] 3 parts by weight of antifreeze

[0104] 2 parts by weight of anti-seepage agent;

[0105] 1.0 part by weight of retarder;

[0106] 3 parts by weight of anti-cracking agent, and then ensure that the maximum dry density, optimal moisture content and other parameters of the mixture meet the design requirements;

[0107] Use an intermittent mixer to mix the mixture to ensure uniform mixing, and control the mixing time to ensure that the basalt fiber is fully dispersed;

[0108] Use closed transport vehicles to transport the mixture to the construction site, and pay attention to reducing the segregation and moisture loss of the mixture during transportation;

[0109] Clean the surface of the base layer to ensure that there is no debris or loose soil, and use a paver to spread the mixture, controlling the paving speed and thickness;

[0110] Use appropriate rollers for rolling, following the principle of light first and heavy later, slow first and fast later to ensure compaction without pressure leakage or overpressure;

[0111] After the mixture is rolled, it should be cured immediately by covering it with film, sprinkling water, etc. to keep the surface of the water-stable base moist, and the curing time should be no less than 7 days;

[0112] During the curing period, regularly check the compaction, flatness, strength and other indicators of the water-stable base layer. If any problems are found, deal with them in a timely manner to ensure that the quality of the water-stable base layer meets the requirements.

[0113] The water reducer is one or more of polycarboxylic acid water reducer, naphthalene water reducer, aliphatic water reducer and aminosulfonic acid water reducer.

[0114] Among them, the raw material of basalt fiber is one of clinophyre basalt, amygdalite and andesite.

[0115] Wherein, the antifreeze agent is one or more of calcium chloride, sodium sulfate, ethylene glycol and urea.

[0116] Among them, the anti-seepage agent is one or more of a silane-based waterproofing agent, a polyurea waterproofing agent, a water-based polyurethane waterproofing agent, and an alkyl silicate waterproofing agent.

[0117] The retarder is one or more of molasses, citric acid, phosphate, sodium gluconate and borax.

[0118] Among them, when using an intermittent mixer to mix the mixture, the specific construction conditions are as follows:

[0119] 1) The capacity of the mixer should be at least 500 liters to meet the needs of batch mixing;

[0120] 2) During the mixing process, the mixer speed should be precisely controlled at 35 revolutions per minute, and the mixing time should be strictly controlled at 4 minutes. This is the optimal mixing time determined based on laboratory tests, which can ensure that the basalt fiber is evenly distributed with cementitious materials such as water-stabilized crushed stone, cement, and fly ash, while avoiding fiber agglomeration.

[0121] 3) During the mixing process, the operator should check the color and moisture of the mixture every 30 seconds to ensure that the color of the mixture is consistent, the moisture is moderate, and there are no obvious dry or wet lumps;

[0122] 4) After mixing is completed, 5 samples are immediately taken from different parts for laboratory testing, including the fluidity, compressive strength and fiber dispersion uniformity of the mixture.

[0123] Among them, when using a roller for rolling, the specific construction parameters are as follows:

[0124] The weight of a light roller should be 8-10 tons, the initial compaction speed should be controlled at 1.8 km / h, and it should be rolled twice. Subsequently, a heavy roller should be used, which should weigh 12-15 tons. The re-compaction speed can be increased to 2.2 km / h, and it should be rolled six times. During the rolling process, the edges and corners should be rolled an additional 1-2 times to ensure no leakage. The overlapping width of the roller wheel track should be precisely controlled at 40% of the wheel diameter to achieve uniform compaction effect.

[0125] Among them, when curing after the mixture is rolled, the specific construction measures include the following:

[0126] 1) During the curing period, double-layer plastic film should be used to cover the plants to reduce water evaporation. When the temperature is above 20℃, the frequency of watering should be adjusted to once every 2 hours. When the temperature is below 10℃, the frequency of watering can be appropriately reduced.

[0127] 2) During the curing period, a cordon should be set up around the construction site and full-time personnel should be assigned to guard it to prevent unauthorized vehicles and personnel from entering.

[0128] 3) The curing time is at least 7 days. During this period, the integrity of the covering material and the moisture status of the base layer should be checked every 24 hours, and the curing log should be recorded.

[0129] Among them, when conducting quality inspection during the health preservation period, the specific inspection conditions and parameters are as follows:

[0130] 1) Use a compaction tester to test the compaction of the base layer. The test points should be randomly distributed, and the compaction of each test point should reach more than 98%;

[0131] 2) Use a flatness meter to check the flatness of the base layer to ensure that the deviation does not exceed 5mm;

[0132] 3) Strength testing is carried out by core sampling. The core sampling locations should cover the entire construction area, the number of cores should be no less than 6, and the unconfined compressive strength of each core sample should not be less than 90% of the design strength;

[0133] 4) For parts that fail the inspection, they should be marked immediately, the reasons should be analyzed, and measures should be taken to repair them within 24 hours. After the repair, they should be re-tested until all indicators meet the design requirements.

[0134] It should be noted that during the construction process, special treatment is performed on the joints to ensure that the joints are smooth and tight. At the same time, appropriate materials and methods are used to improve the crack resistance of the joints. After the construction is completed, relevant departments are organized to conduct acceptance.

[0135] Example 3

[0136] A method for anti-cracking construction of a water-stable base based on optimization of a basalt fiber mixture, the method comprising the following steps:

[0137] Select high-quality basalt fiber raw materials, ensuring that their length, diameter, tensile strength and other indicators meet the specifications; prepare water-stabilized crushed stone raw materials, ensuring that their gradation, crushing value, mud content and other indicators meet the design requirements; prepare cement, fly ash and other cementitious materials, ensuring their quality;

[0138] The basalt fiber raw materials are pre-wetted to increase their bonding properties with the mixture, and the pre-wetted basalt fiber raw materials are dispersed according to the designed proportion to form basalt fibers and ensure that they are evenly distributed in the mixture;

[0139] Weigh:

[0140] 980 parts by weight of hydraulically stabilized gravel;

[0141] 5 parts by weight of basalt fiber;

[0142] 130 parts by weight of cement;

[0143] 60 parts by weight of fly ash;

[0144] 150 parts by weight of water;

[0145] 40 parts by weight of slag powder;

[0146] 0.8 parts by weight of water reducer;

[0147] 15 parts by weight of lime

[0148] 2 parts by weight of antifreeze

[0149] 1.5 parts by weight of an anti-seepage agent;

[0150] 0.7 parts by weight of retarder;

[0151] 12 parts by weight of anti-cracking agent, and then ensure that the maximum dry density, optimal moisture content and other parameters of the mixture meet the design requirements;

[0152] Use an intermittent mixer to mix the mixture to ensure uniform mixing, and control the mixing time to ensure that the basalt fiber is fully dispersed;

[0153] Use closed transport vehicles to transport the mixture to the construction site, and pay attention to reducing the segregation and moisture loss of the mixture during transportation;

[0154] Clean the surface of the base layer to ensure that there is no debris or loose soil, and use a paver to spread the mixture, controlling the paving speed and thickness;

[0155] Use appropriate rollers for rolling, following the principle of light first and heavy later, slow first and fast later to ensure compaction without pressure leakage or overpressure;

[0156] After the mixture is rolled, it should be cured immediately by covering it with film, sprinkling water, etc. to keep the surface of the water-stable base moist, and the curing time should be no less than 7 days;

[0157] During the curing period, regularly check the compaction, flatness, strength and other indicators of the water-stable base layer. If any problems are found, deal with them in a timely manner to ensure that the quality of the water-stable base layer meets the requirements.

[0158] The water reducer is one or more of polycarboxylic acid water reducer, naphthalene water reducer, aliphatic water reducer and aminosulfonic acid water reducer.

[0159] Among them, the raw material of basalt fiber is one of clinophyre basalt, amygdalite and andesite.

[0160] Wherein, the antifreeze agent is one or more of calcium chloride, sodium sulfate, ethylene glycol and urea.

[0161] Among them, the anti-seepage agent is one or more of a silane-based waterproofing agent, a polyurea waterproofing agent, a water-based polyurethane waterproofing agent, and an alkyl silicate waterproofing agent.

[0162] The retarder is one or more of molasses, citric acid, phosphate, sodium gluconate and borax.

[0163] Among them, when using an intermittent mixer to mix the mixture, the specific construction conditions are as follows:

[0164] 1) The capacity of the mixer should be at least 500 liters to meet the needs of batch mixing;

[0165] 2) During the mixing process, the mixer speed should be precisely controlled at 35 revolutions per minute, and the mixing time should be strictly controlled at 4 minutes. This is the optimal mixing time determined based on laboratory tests, which can ensure that the basalt fiber is evenly distributed with cementitious materials such as water-stabilized crushed stone, cement, and fly ash, while avoiding fiber agglomeration.

[0166] 3) During the mixing process, the operator should check the color and moisture of the mixture every 30 seconds to ensure that the color of the mixture is consistent, the moisture is moderate, and there are no obvious dry or wet lumps;

[0167] 4) After mixing is completed, 5 samples are immediately taken from different parts for laboratory testing, including the fluidity, compressive strength and fiber dispersion uniformity of the mixture.

[0168] Among them, when using a roller for rolling, the specific construction parameters are as follows:

[0169] The weight of a light roller should be 8-10 tons, the initial compaction speed should be controlled at 1.8 km / h, and it should be rolled twice. Subsequently, a heavy roller should be used, which should weigh 12-15 tons. The re-compaction speed can be increased to 2.2 km / h, and it should be rolled six times. During the rolling process, the edges and corners should be rolled an additional 1-2 times to ensure no leakage. The overlapping width of the roller wheel track should be precisely controlled at 40% of the wheel diameter to achieve uniform compaction effect.

[0170] Among them, when curing after the mixture is rolled, the specific construction measures include the following:

[0171] 1) During the curing period, double-layer plastic film should be used to cover the plants to reduce water evaporation. When the temperature is above 20℃, the frequency of watering should be adjusted to once every 2 hours. When the temperature is below 10℃, the frequency of watering can be appropriately reduced.

[0172] 2) During the curing period, a cordon should be set up around the construction site and full-time personnel should be assigned to guard it to prevent unauthorized vehicles and personnel from entering.

[0173] 3) The curing time is at least 7 days. During this period, the integrity of the covering material and the moisture status of the base layer should be checked every 24 hours, and the curing log should be recorded.

[0174] Among them, when conducting quality inspection during the health preservation period, the specific inspection conditions and parameters are as follows:

[0175] 1) Use a compaction tester to test the compaction of the base layer. The test points should be randomly distributed, and the compaction of each test point should reach more than 98%;

[0176] 2) Use a flatness meter to check the flatness of the base layer to ensure that the deviation does not exceed 5mm;

[0177] 3) Strength testing is carried out by core sampling. The core sampling locations should cover the entire construction area, the number of cores should be no less than 6, and the unconfined compressive strength of each core sample should not be less than 90% of the design strength;

[0178] 4) For parts that fail the inspection, they should be marked immediately, the reasons should be analyzed, and measures should be taken to repair them within 24 hours. After the repair, they should be re-tested until all indicators meet the design requirements.

[0179] It should be noted that during the construction process, special treatment is performed on the joints to ensure that the joints are smooth and tight. At the same time, appropriate materials and methods are used to improve the crack resistance of the joints. After the construction is completed, relevant departments are organized to conduct acceptance.

[0180] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and the changes still fall within the scope of protection of the present invention.

Claims

1. A method for anti-cracking construction of a water-stable base based on optimization of basalt fiber mixture, characterized in that: The following steps are involved: Provide basalt fiber raw materials, water-stabilized crushed stone raw materials, cement, and fly ash; Pre-wetting the basalt fiber raw material, and dispersing the pre-wetted basalt fiber raw material according to a designed ratio to form basalt fiber; Weighing different weight portions of basalt fiber, water-stabilized crushed stone raw material, cement, fly ash and additives and mixing and stirring to obtain a mixture, wherein the additives include a water reducer, an antifreeze agent, an anti-seepage agent, a retarder and an anti-cracking agent; Spread the mixture on the surface of the road base, and roll it after paving to form a water-stable base; Carry out health treatment on water-stable base; Complete the anti-cracking construction of the water-stable base.

2. The anti-cracking construction method for water-stable base based on optimization of basalt fiber mixture according to claim 1 is characterized in that: When providing basalt fiber raw materials, water-stabilized crushed stone raw materials, cement, and fly ash, select basalt fiber raw materials whose length, diameter, and tensile strength indicators meet the requirements of the specifications, and select water-stabilized crushed stone raw materials whose grading, crushing value, and mud content indicators meet the design requirements.

3. The anti-cracking construction method for water-stable base based on optimization of basalt fiber mixture according to claim 1 is characterized in that: The water-stabilized crushed stone raw materials include water-stabilized crushed stone, water, slag powder, and lime. When weighing different weight portions of basalt fiber, water-stabilized crushed stone raw materials, cement, fly ash, and additives and mixing and stirring, the weight portions of each material weighed include: 950-1000 parts of hydraulically stabilized gravel; 3-6 parts of basalt fiber; 100-150 parts of cement; 50-100 parts of fly ash; 130-160 parts water; 30-50 parts of slag powder; Water reducing agent 0.5-1.0 parts; 10-20 parts lime 1-3 parts antifreeze 1-2 parts of anti-seepage agent; Retarder 0.5-1.0 parts; 1-3 parts of anti-cracking agent.

4. The anti-cracking construction method for a water-stable base based on optimized basalt fiber mixture according to claim 1 comprises mixing different weight portions of basalt fiber, water-stable crushed stone raw materials, cement, fly ash, and additives using an intermittent mixer, and controlling the mixing time to ensure that the basalt fiber is fully dispersed.

5. The anti-cracking construction method for a water-stable base based on optimization of a basalt fiber mixture as claimed in claim 1, wherein before spreading the mixture on the surface of the road base, the surface of the road base is cleaned to ensure that the surface of the road base is free of debris and loose soil.

6. The anti-cracking construction method for water-stable base based on optimization of basalt fiber mixture as claimed in claim 1, wherein the paving speed and thickness are controlled when the mixture is spread on the surface of the road base.

7. The anti-cracking construction method for water-stable base based on optimized basalt fiber mixture as claimed in claim 1, when rolling after paving, follows the principle of light first and heavy later, slow first and fast later, so as to ensure dense rolling without leakage or overpressure.

8. The anti-cracking construction method for a water-stable base layer based on optimized basalt fiber mixture as claimed in claim 1, wherein when the water-stable base layer is cured, a covering film and watering measures are adopted to keep the surface of the water-stable base layer moist, and the curing time is not less than 7 days.

9. The anti-cracking construction method for a water-stable base layer based on optimization of a basalt fiber mixture as claimed in claim 1, wherein during the curing treatment of the water-stable base layer, the compaction, flatness and strength indicators of the water-stable base layer are regularly tested.

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