Environment-friendly anti-seismic concrete and preparation method thereof

Abstract

The application relates to the technical field of concrete, and particularly discloses an environment-friendly anti-seismic concrete and a preparation method thereof, the environment-friendly anti-seismic concrete comprises the following components in parts by mass: water 100 parts; cement 212-216 parts; fly ash 29-30 parts; recycled aggregate 1120-1130 parts; alloy fiber 12-15 parts; additive 3-3.5 parts; and the alloy fiber is prepared from copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride. The application has the advantages of improving the toughness of the concrete material.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of concrete, in particular to an environment-friendly anti-seismic concrete and a preparation method thereof. BACKGROUND

[0002] Concrete material is one of the main forces of modern building materials, which has good plasticity and high strength after solidification, and can meet the needs of most building structures.

[0003] With the development of science and technology, the quality requirements for buildings are getting higher and higher. Although ordinary concrete material has high strength and can meet the needs of most buildings, it has the defects of large rigidity and small toughness, which leads to easy cracking of concrete material and difficulty in meeting the needs of anti-seismic buildings. Therefore, there is still room for improvement. SUMMARY

[0004] In order to improve the toughness of concrete material, the present application provides an environment-friendly anti-seismic concrete and a preparation method thereof.

[0005] In the first aspect, the present application provides an environment-friendly anti-seismic concrete, which adopts the following technical scheme:

[0006] An environment-friendly anti-seismic concrete comprises the following components by mass fraction:

[0007] 100 parts of water;

[0008] 212-216 parts of cement;

[0009] 29-30 parts of fly ash;

[0010] 1120-1130 parts of recycled aggregate;

[0011] 12-15 parts of alloy fiber;

[0012] 3-3.5 parts of additive;

[0013] The alloy fiber is compounded by copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride.

[0014] By adopting the above technical scheme, the alloy fiber is compounded by copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride, so that the alloy fiber has high damping and high adhesion with concrete. It can well modify the concrete material, so that the concrete has high strength and high toughness after solidification, and can well limit the elastic deformation of the concrete material. Compared with traditional steel fiber, it has smaller elastic deformation but better anti-cracking performance. Therefore, the concrete material has good anti-cracking performance while having less elastic deformation, thereby having good anti-seismic effect.

[0015] Preferably, in the alloy fiber, the mass ratio of copper and tin is 100:3-5.

[0016] By adopting the above technical scheme, by specifically selecting the mass ratio of copper and tin, the effect of the alloy fiber modified concrete is better, and the crack resistance of the concrete is better provided.

[0017] Preferably, in the alloy fiber, the mass ratio of copper and magnesium chloride is 100:0.1-0.2.

[0018] By adopting the above technical scheme, by specifically selecting the mixing amount of magnesium chloride, the effect of cooperating with other components is better, and the damping of the alloy fiber can be better improved, so that higher energy consumption can be achieved under less deformation, thereby better reducing the cracking phenomenon of the concrete.

[0019] Preferably, in the alloy fiber, the mass ratio of copper and lithium fluoride is 100:0.4-0.5.

[0020] By adopting the above technical scheme, by specifically selecting the mixing amount of lithium fluoride, the effect of cooperating with other components is better, the effect of improving the damping of the alloy fiber is better, and the modification effect of improving the crack resistance of the concrete is better.

[0021] Preferably, in the alloy fiber, the mass ratio of copper and sodium sulfate is 100:0.3-0.4.

[0022] By adopting the above technical scheme, by specifically selecting the mixing amount of sodium sulfate, the other components are better cooperated, so that the effect of improving the crack resistance of the alloy fiber modified concrete is better.

[0023] Preferably, in the alloy fiber, the mass ratio of copper and potassium chloride is 100:0.7-0.8.

[0024] By adopting the above technical scheme, by specifically selecting the mixing amount of potassium chloride, the other components are better cooperated, so that the alloy fiber performance is better, the effect of the modified concrete is better, the concrete material has better crack resistance, and the demand of the building seismic performance can be better met.

[0025] Preferably, in the alloy fiber, the mass ratio of copper and barium chloride is 100:0.5-0.6.

[0026] By adopting the above technical scheme, by specifically selecting the mixing amount of barium chloride, the effect of synergistically cooperating with other components is better, the quality of the alloy fiber is better, the concrete has less deformation and higher crack resistance after solidification, and the seismic capacity of the building made is better.

[0027] Preferably, the preparation method of the alloy fiber is as follows:

[0028] Mix copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, barium chloride, heat to melt, keep melting for 30-60 min, pour into a mold to cool and form an alloy block, cold roll and cut the alloy block to obtain an alloy fiber.

[0029] By adopting the technical scheme, the copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride are heated to melt and kept for 30-60 min, so that the components are fully fused, the synergistic effect of mutual cooperation is better, the quality of the alloy fiber prepared is better, and the effect of the modified concrete material is better.

[0030] Preferably, the recycled aggregate is a compound of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:1.

[0031] By adopting the technical scheme, the compaction degree of the concrete is better improved by specifically selecting the compound of the recycled coarse aggregate and the recycled fine aggregate, so that the strength of the solidified concrete is higher.

[0032] In the second aspect, the application provides a preparation method of the environment-friendly anti-seismic concrete, which adopts the following technical scheme:

[0033] The preparation method of the environment-friendly anti-seismic concrete has the characteristics that the method comprises the following steps:

[0034] Step 1), uniformly mixing cement, fly ash, recycled aggregate and alloy fiber to obtain premixed material;

[0035] Step 2), adding water and additive to the premixed material and uniformly mixing to obtain the environment-friendly anti-seismic concrete.

[0036] By adopting the technical scheme, the prepared concrete has smaller elastic deformation, is suitable for preparing high-rise buildings, has good crack resistance, can well improve the anti-seismic performance of the building, and has higher stability.

[0037] In summary, the application has the following beneficial effects:

[0038] 1. Since the alloy fiber is prepared by compounding copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride, the alloy fiber has higher damping and higher adhesion with concrete, can well modify the concrete material, has higher strength and higher toughness after the concrete is solidified, can well limit the elastic deformation of the concrete material, has smaller elastic deformation compared with traditional steel fiber, has better crack resistance, and has good anti-seismic effect.

[0039] 2, The mass ratio of copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, barium chloride is preferably selected in the application to make the components cooperate better, improve the crack resistance of concrete, and improve the anti-seismic performance of the solidified concrete.

[0040] 3, The copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, barium chloride are preferably heated and melted in the application, and then kept for 30-60min, so that the components are fully fused, the synergistic effect of mutual cooperation is better, the quality of the alloy fiber prepared is better, and the effect of the modified concrete material is better. DETAILED DESCRIPTION

[0041] The application will be further described in detail below in combination with examples.

[0042] Example 1

[0043] An environment-friendly anti-seismic concrete is composed of the following components:

[0044] Water, cement, fly ash, recycled aggregate, alloy fiber, and admixture.

[0045] The cement is ordinary portland cement, Runfeng cement, and the specification is P.O 42.5R.

[0046] The fly ash is secondary fly ash, which is purchased from Shijiazhuang Yuanjing Mineral Products Co., Ltd.

[0047] The recycled aggregate is a complex of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of recycled coarse aggregate to recycled fine aggregate is 1.3:1.

[0048] The recycled coarse aggregate is crushed from building solid waste, and the particle size is 5-10mm.

[0049] The recycled fine aggregate is crushed from building solid waste, and the particle size is 0.35-0.5mm.

[0050] The alloy fiber is prepared by compounding copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, and barium chloride, and the preparation method of the alloy fiber is as follows:

[0051] 100kg of copper, 3kg of tin, 0.1kg of magnesium chloride, 0.4kg of lithium fluoride, 0.3kg of sodium sulfate, 0.7kg of potassium chloride, and 0.5kg of barium chloride are mixed, heated to 1200℃, kept at 1200℃ for 30min, injected into a mold to cool and form an alloy block, and then cold-rolled and cut to obtain an alloy fiber. The alloy fiber is a wave shear type fiber with a length of 40mm and an equivalent diameter of 1mm.

[0052] The copper is commercially available, and the CAS number is 7440-58-8.

[0053] The tin is derived from a commercially available, CAS number: 7440-31-5.

[0054] The magnesium chloride is derived from a commercially available, CAS number: 7786-30-3.

[0055] The lithium fluoride is derived from a commercially available, CAS number: 7789-24-4.

[0056] The sodium sulfate is derived from a commercially available, CAS number: 7757-82-6.

[0057] The potassium chloride is derived from a commercially available, CAS number: 7447-40-7.

[0058] The barium chloride is derived from a commercially available, CAS number: 10361-37-2.

[0059] The admixture is a polycarboxylic acid water reducing agent, purchased from Shandong Qianqian Chemical Technology Co., Ltd.

[0060] The preparation method of the environment-friendly anti-seismic concrete is as follows:

[0061] Step 1), 212 kg of cement, 29 kg of fly ash, 1120 kg of recycled aggregate, and 12 kg of alloy fiber are put into a stirring kettle, the stirring speed is 60 r / min, and the stirring time is 5 min, so that the mixture is uniformly mixed to obtain a premixed material.

[0062] Step 2), 100 kg of water and 3 kg of admixture are added to the premixed material, the stirring speed is 60 r / min, and the stirring time is 8 min, so that the mixture is uniformly mixed to obtain the environment-friendly anti-seismic concrete.

[0063] Example 2

[0064] An environment-friendly anti-seismic concrete is composed of the following components:

[0065] Water, cement, fly ash, recycled aggregate, alloy fiber, and admixture.

[0066] The cement is ordinary portland cement, Rengfeng cement, and the specification is P.O 42.5R.

[0067] The fly ash is secondary fly ash, purchased from Shijiazhuang Yuancheng Mineral Products Co., Ltd.

[0068] The recycled aggregate is a compound of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:1.

[0069] The recycled coarse aggregate is obtained by crushing building solid waste, and the particle size is 5-10 mm.

[0070] The recycled fine aggregate is obtained by crushing building solid waste, and the particle size is 0.35-0.5 mm.

[0071] The alloy fiber is prepared from copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride, and the preparation method of the alloy fiber is as follows.

[0072] 100kg of copper, 4kg of tin, 0.15kg of magnesium chloride, 0.45kg of lithium fluoride, 0.35kg of sodium sulfate, 0.75kg of potassium chloride and 0.55kg of barium chloride are mixed, heated to 1200 DEG C, kept at 1200 DEG C for 45min, injected into a mold and cooled to form an alloy block, and the alloy block is cold-rolled and cut to obtain the alloy fiber, which is a wave shear type fiber with a length of 40mm and an equivalent diameter of 1mm.

[0073] The copper is commercially available, and the CAS number is 7440-58-8.

[0074] The tin is commercially available, and the CAS number is 7440-31-5.

[0075] The magnesium chloride is commercially available, and the CAS number is 7786-30-3.

[0076] The lithium fluoride is commercially available, and the CAS number is 7789-24-4.

[0077] The sodium sulfate is commercially available, and the CAS number is 7757-82-6.

[0078] The potassium chloride is commercially available, and the CAS number is 7447-40-7.

[0079] The barium chloride is commercially available, and the CAS number is 10361-37-2.

[0080] The additive is a polycarboxylic acid water reducing agent, which is purchased from Shandong Qianqian Chemical Technology Co., Ltd.

[0081] The preparation method of the environment-friendly anti-seismic concrete is as follows:

[0082] Step 1), 214kg of cement, 29.5kg of fly ash, 1125kg of recycled aggregate and 13.5kg of alloy fiber are put into a stirring kettle, the stirring speed is 60r / min, and the mixture is stirred for 5min to obtain a premixed material.

[0083] Step 2), 100kg of water and 3.25kg of additive are added to the premixed material, the stirring speed is 60r / min, and the mixture is stirred for 8min to obtain the environment-friendly anti-seismic concrete.

[0084] Example 3

[0085] An environment-friendly anti-seismic concrete is prepared from the following components:

[0086] Water, cement, fly ash, recycled aggregate, alloy fiber and additive.

[0087] The cement is ordinary Portland cement, Runfeng cement, and the specification is P.O 42.5R.

[0088] The fly ash is secondary fly ash, which is purchased from Shijiazhuang Yuanjing Mineral Products Co., Ltd.

[0089] The recycled aggregate is a compound of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:1.

[0090] The recycled coarse aggregate is crushed from construction solid waste, and the particle size is 5-10 mm.

[0091] The recycled fine aggregate is crushed from construction solid waste, and the particle size is 0.35-0.5 mm.

[0092] The alloy fiber is compounded by copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride, and the preparation method of the alloy fiber is as follows:

[0093] 100 kg of copper, 5 kg of tin, 0.2 kg of magnesium chloride, 0.5 kg of lithium fluoride, 0.4 kg of sodium sulfate, 0.8 kg of potassium chloride and 0.6 kg of barium chloride are mixed, heated to 1200℃, kept at 1200℃ for 60 min, injected into a mold and cooled to form an alloy block, and the alloy block is cold-rolled and cut to obtain the alloy fiber. The alloy fiber is a wave shear type fiber with a length of 40 mm and an equivalent diameter of 1 mm.

[0094] The copper is commercially available, and the CAS number is 7440-58-8.

[0095] The tin is commercially available, and the CAS number is 7440-31-5.

[0096] The magnesium chloride is commercially available, and the CAS number is 7786-30-3.

[0097] The lithium fluoride is commercially available, and the CAS number is 7789-24-4.

[0098] The sodium sulfate is commercially available, and the CAS number is 7757-82-6.

[0099] The potassium chloride is commercially available, and the CAS number is 7447-40-7.

[0100] The barium chloride is commercially available, and the CAS number is 10361-37-2.

[0101] The additive is a polycarboxylic acid water reducing agent, which is purchased from Shandong Qianqian Chemical Technology Co., Ltd.

[0102] The preparation method of the environmentally friendly anti-seismic concrete is as follows:

[0103] Step 1), 216 kg of cement, 30 kg of fly ash, 1130 kg of recycled aggregate, 15 kg of alloy fiber are put into a stirring kettle, the stirring speed is 60 r / min, and stirring for 5 min, and then mixed uniformly to obtain a premixed material.

[0104] Step 2), 100 kg of water and 3.5 kg of additive are added to the premixed material, the stirring speed is 60 r / min, and stirring for 8 min, and then mixed uniformly to obtain the environment-friendly anti-seismic concrete.

[0105] Example 4

[0106] An environment-friendly anti-seismic concrete is composed of the following components:

[0107] Water, cement, fly ash, recycled aggregate, alloy fiber, additive.

[0108] The cement is ordinary portland cement, Runfeng cement, and the specification is P.O 42.5R.

[0109] The fly ash is secondary fly ash, which is purchased from Shijiazhuang Yuanjing Mineral Products Co., Ltd.

[0110] The recycled aggregate is a complex of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:1.

[0111] The recycled coarse aggregate is obtained by crushing building solid waste, and the particle size is 5-10 mm.

[0112] The recycled fine aggregate is obtained by crushing building solid waste, and the particle size is 0.35-0.5 mm.

[0113] The alloy fiber is prepared by compounding copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, and barium chloride, and the preparation method of the alloy fiber is as follows:

[0114] 100 kg of copper, 2.5 kg of tin, 0.05 kg of magnesium chloride, 0.35 kg of lithium fluoride, 0.25 kg of sodium sulfate, 0.65 kg of potassium chloride, and 0.45 kg of barium chloride are mixed, heated to 1200℃, kept at 1200℃ for 45 min, injected into a mold and cooled to form an alloy block, and then the alloy block is cold-rolled and cut to obtain the alloy fiber. The alloy fiber is a wave shear type fiber with a length of 40 mm and an equivalent diameter of 1 mm.

[0115] The copper is commercially available, and the CAS number is 7440-58-8.

[0116] The tin is commercially available, and the CAS number is 7440-31-5.

[0117] The magnesium chloride is commercially available, and the CAS number is 7786-30-3.

[0118] Lithium fluoride is derived from commercially available, CAS No.: 7789-24-4.

[0119] Sodium sulfate is derived from commercially available, CAS No.: 7757-82-6.

[0120] Potassium chloride is derived from commercially available, CAS No.: 7447-40-7.

[0121] Barium chloride is derived from commercially available, CAS No.: 10361-37-2.

[0122] Among them, the admixture is polycarboxylic acid water reducing agent, purchased from Shandong Qianqian Chemical Technology Co., Ltd.

[0123] The preparation method of the environment-friendly anti-seismic concrete is as follows:

[0124] Step 1), 214 kg of cement, 29.5 kg of fly ash, 1125 kg of recycled aggregate, and 13.5 kg of alloy fiber are put into a stirring kettle, the stirring speed is 60 r / min, and the stirring time is 5 min, and then the mixture is uniformly mixed to obtain a premixed material.

[0125] Step 2), 100 kg of water and 3.25 kg of admixture are added to the premixed material, the stirring speed is 60 r / min, and the stirring time is 8 min, and then the mixture is uniformly mixed to obtain the environment-friendly anti-seismic concrete.

[0126] Example 5

[0127] An environment-friendly anti-seismic concrete is composed of the following components:

[0128] Water, cement, fly ash, recycled aggregate, alloy fiber, and admixture.

[0129] Among them, the cement is ordinary portland cement, Rengfeng cement, and the specification is P.O 42.5R.

[0130] Among them, the fly ash is secondary fly ash, purchased from Shijiazhuang Yuanjing Mineral Products Co., Ltd.

[0131] Among them, the recycled aggregate is a complex of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:1.

[0132] The recycled coarse aggregate is crushed from building solid waste, and the particle size is 5-10 mm.

[0133] The recycled fine aggregate is crushed from building solid waste, and the particle size is 0.35-0.5 mm.

[0134] Among them, the alloy fiber is compounded by copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, and barium chloride, and the preparation method of the alloy fiber is as follows:

[0135] Mix 100 kg of copper, 6 kg of tin, 0.25 kg of magnesium chloride, 0.55 kg of lithium fluoride, 0.45 kg of sodium sulfate, 0.85 kg of potassium chloride, and 0.65 kg of barium chloride, heat to 1200℃, keep temperature at 1200℃ for 45 min, pour into a mold and cool to form an alloy block, cold roll the alloy block, cut it into pieces to obtain alloy fibers, the alloy fibers are wave shear type fibers with a length of 40 mm and an equivalent diameter of 1 mm.

[0136] The copper is commercially available, CAS No. 7440-58-8.

[0137] The tin is commercially available, CAS No. 7440-31-5.

[0138] The magnesium chloride is commercially available, CAS No. 7786-30-3.

[0139] The lithium fluoride is commercially available, CAS No. 7789-24-4.

[0140] The sodium sulfate is commercially available, CAS No. 7757-82-6.

[0141] The potassium chloride is commercially available, CAS No. 7447-40-7.

[0142] The barium chloride is commercially available, CAS No. 10361-37-2.

[0143] The admixture is a polycarboxylic acid water reducer purchased from Shandong Qianqian Chemical Technology Co., Ltd.

[0144] The preparation method of the environmentally friendly anti-seismic concrete is as follows:

[0145] Step 1), put 214 kg of cement, 29.5 kg of fly ash, 1125 kg of recycled aggregate, and 13.5 kg of alloy fibers into a stirring kettle, stir at a speed of 60 r / min for 5 min, mix uniformly, and obtain a premixed material.

[0146] Step 2), add 100 kg of water and 3.25 kg of admixture to the premixed material, stir at a speed of 60 r / min for 8 min, mix uniformly, and obtain the environmentally friendly anti-seismic concrete.

[0147] Comparative Example 1

[0148] An environmentally friendly anti-seismic concrete, compared with Example 2, only differs in that:

[0149] The alloy fibers are replaced by an equal amount of steel fibers.

[0150] The steel fibers are commercially available, and are wave shear type steel fibers with a length of 40 mm and an equivalent diameter of 1 mm.

[0151] Comparative Example 2

[0152] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0153] In the alloy fiber, tin is replaced by nickel in equal amount.

[0154] Wherein, nickel is from market, CAS number: 7440-02-0.

[0155] Comparative Example 3

[0156] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0157] In the alloy fiber, magnesium chloride is replaced by sodium fluoride in equal amount.

[0158] Wherein, sodium fluoride is from market, CAS number: 7681-49-4.

[0159] Comparative Example 4

[0160] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0161] In the alloy fiber, lithium fluoride is replaced by sodium chloride in equal amount.

[0162] Wherein, sodium chloride is from market, CAS number: 7647-14-5.

[0163] Comparative Example 5

[0164] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0165] In the alloy fiber, sodium sulfate is replaced by zinc fluoride in equal amount.

[0166] Wherein, zinc fluoride is from market, CAS number: 7783-49-5.

[0167] Comparative Example 6

[0168] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0169] In the alloy fiber, potassium chloride is replaced by calcium chloride in equal amount.

[0170] Wherein, calcium chloride is from market, CAS number: 10043-52-4.

[0171] Comparative Example 7

[0172] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0173] In the alloy fiber, barium chloride is replaced by potassium sulfate in equal amount.

[0174] Potassium sulfate is commercially available, CAS No. 7778-80-5.

[0175] Comparative Example 8

[0176] An environmentally friendly anti-seismic concrete, compared with Example 2, the only difference is that:

[0177] In the alloy fiber, nickel is used to replace tin in equal amount.

[0178] In the alloy fiber, sodium fluoride is used to replace magnesium chloride in equal amount.

[0179] In the alloy fiber, sodium chloride is used to replace lithium fluoride in equal amount.

[0180] In the alloy fiber, zinc fluoride is used to replace sodium sulfate in equal amount.

[0181] In the alloy fiber, calcium chloride is used to replace potassium chloride in equal amount.

[0182] In the alloy fiber, potassium sulfate is used to replace barium chloride in equal amount.

[0183] Nickel is commercially available, CAS No. 7440-02-0.

[0184] Sodium fluoride is commercially available, CAS No. 7681-49-4.

[0185] Sodium chloride is commercially available, CAS No. 7647-14-5.

[0186] Zinc fluoride is commercially available, CAS No. 7783-49-5.

[0187] Calcium chloride is commercially available, CAS No. 10043-52-4.

[0188] Potassium sulfate is commercially available, CAS No. 7778-80-5.

[0189] Experiment 1

[0190] According to GB / T50081-2019 "Standard for Testing Methods of Physical and Mechanical Properties of Concrete", the 7d compressive strength (standard specimen), 28d compressive strength (standard specimen), 28d flexural strength (standard specimen), and 28d splitting tensile strength (standard specimen) of the concrete samples prepared from each example and comparative example were detected.

[0191] The specific detection data of Experiment 1 is shown in Table 1.

[0192] Table 1

[0193]

[0194]

[0195] According to the data comparison of Table 1, when the alloy fiber prepared by compounding copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride and barium chloride is added in the concrete, compared with the traditional steel fiber, the compressive strength changes little, but the flexural strength and splitting tensile strength are significantly improved. The main reason is that the alloy fiber has greater damping and can absorb more energy, so that the applied energy needs to be higher to make the concrete crack. It can be seen that the anti-seismic concrete of each embodiment has higher anti-seismic performance and can better maintain the structural stability in the earthquake and is not easy to crack and damage.

[0196] When one or more components in the alloy fiber are replaced, the performance of the anti-seismic concrete after curing is worse than that of the traditional steel fiber, and the effect of modifying the anti-seismic performance of the modified anti-seismic concrete is not as good as that of the traditional steel fiber.

[0197] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An environmentally friendly earthquake-resistant concrete, characterized in that: Comprise the following components by mass fraction: Water 100 parts; Cement 212-216 parts; Fly ash 29-30 parts; Recycled aggregate 1120-1130 parts; Alloy fiber 12-15 parts; Admixtures 3-3.5 parts; The alloy fiber is prepared from copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, barium chloride; In the alloy fiber, the mass ratio of copper to tin is 100:3-5; In the alloy fiber, the mass ratio of copper to magnesium chloride is 100:0.1-0.2; In the alloy fiber, the mass ratio of copper to lithium fluoride is 100:0.4-0.5; In the alloy fiber, the mass ratio of copper to sodium sulfate is 100:0.3-0.4; In the alloy fiber, the mass ratio of copper to potassium chloride is 100:0.7-0.8; In the alloy fiber, the mass ratio of copper to barium chloride is 100:0.5-0.

6.

2. The environment-friendly anti-seismic concrete according to claim 1, characterized in that: The preparation method of the alloy fiber is as follows: Mix copper, tin, magnesium chloride, lithium fluoride, sodium sulfate, potassium chloride, and barium chloride, heat to melting, keep melting for 30-60 min, pour into a mold to cool and form an alloy block, cold roll and cut the alloy block to obtain alloy fiber.

3. The environment-friendly anti-seismic concrete according to claim 1, characterized in that: The recycled aggregate is a compound of recycled coarse aggregate and recycled fine aggregate, and the mass ratio of the recycled coarse aggregate to the recycled fine aggregate is 1.3:

1.

4. A method of preparing the environmentally friendly anti-seismic concrete according to any one of claims 1-3, characterized in that: Comprise the following steps: Step 1), mix cement, fly ash, recycled aggregate, and alloy fiber uniformly to obtain premixed material; Step 2), add water and admixtures to the premixed material and mix uniformly to obtain environment-friendly anti-seismic concrete.

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