CN106746958A

CN106746958A - The preparation method that hollow concrete is laid bricks is prepared using discarded concrete

Info

Publication number: CN106746958A
Application number: CN201611061932.2A
Authority: CN
Inventors: 王颖
Original assignee: Sichuan Leton Intelligent Environmental Protection Industry Co Ltd
Current assignee: Sichuan Leton Intelligent Environmental Protection Industry Co Ltd
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2017-05-31
Anticipated expiration: 2036-11-25
Also published as: CN106746958B

Abstract

The preparation method that hollow concrete is laid bricks is prepared the invention discloses a kind of utilization discarded concrete, its method and step is as follows：A, using discarded mixed mud be obtained regenerated coarse aggregate and recycled fine aggregate；It is prepared by B, regenerative gel material；C, concrete building brick material mixture ratio：Concrete building brick material is matched into according to following mass fraction：Regenerative gel material：550~700 parts；Polypropylene fibre：3~7 parts；Cement：300~400 parts；Silica flour：50~70 parts；Haydite：40~55 parts；Bonding agent：50~60 parts；Pore former or foaming agent：5~8 parts；D, hollow concrete are laid bricks preparation.The present invention crushes discarded concrete, screens and hybrid reaction produces regenerative gel material in proportion, prepare hollow concrete and lay bricks then in conjunction with regenerative gel material and other proportioning components, can be utilized with spread, with wide market prospects, and substantial amounts of mine resources have been saved, the economic worth of discarded concrete has been improve.

Description

The preparation method that hollow concrete is laid bricks is prepared using discarded concrete

Technical field

Laid bricks preparation method the present invention relates to hollow concrete, more particularly to a kind of prepares hollow mixing using discarded concrete The preparation method that solidifying soil is laid bricks.

Background technology

With expanding economy and the progress of society, increasing concrete structure building is because reaching service life or not Application demand can be met and be removed, thereby produce substantial amounts of discarded concrete.According to statistics, China produces because removing building every year More than 200,000,000 tons, wherein the overwhelming majority is discarded concrete to raw solid waste；But having for these discarded concretes Effect processing method is few, and traditional processing method is mainly and transports countryside air storage or landfill to, and this method can bring height High processing cost simultaneously triggers a series of environmental problems.On the one hand, the annual production of chinese concrete accounts for the 45% of world's total amount, gives up Abandon the problem of environmental pollution that concrete brings increasingly severe；On the other hand, production concrete needs substantial amounts of mineral aggregate, mine money Source is as a kind of non-renewable resources, it is necessary to be protected by.

Replace traditional mineral aggregate after discarded concrete is broken as the aggregate of fresh concrete, can solve well discarded mixed The solidifying problem of environmental pollution made with local methods, has saved mine resources, and can to a certain extent reduce engineering cost again.And broken Aggregate is can not to be used directly as construction material, and each side's surface properties of discarded concrete aggregate are different from natural aggregate；I.e. Make to mix discarded concrete aggregate with cement mortar and be used as concrete and use, some require concrete strength it is higher should With in field, such as armored concrete is that can not reach wanting for armored concrete with discarded concrete aggregate replacement natural aggregate Ask, this just cannot effectively digest Chinese so huge discarded concrete, and the utilization of discarded concrete also just cannot be on a large scale Be applied in building field, how effectively using discarded concrete and it is broken after discarded concrete aggregate be construction material The big technical barrier faced in field, is also the technical task for studying tackling key problem, huge economic benefit in containing.

The content of the invention

Part, is prepared it is an object of the invention to provide one kind using discarded concrete in view of the shortcomings of the prior art The preparation method that hollow concrete is laid bricks, discarded concrete is crushed, is screened and hybrid reaction produces regenerative gel in proportion Material, prepares hollow concrete and lays bricks then in conjunction with regenerative gel material and other proportioning components, can be with spread Utilize, with wide market prospects, and saved substantial amounts of mine resources, improve the economic worth of discarded concrete.

The purpose of the present invention is achieved through the following technical solutions：

A kind of utilization discarded concrete prepares the preparation method that hollow concrete is laid bricks, and its method and step is as follows：

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Filled including reclaiming Put, retracting device includes that vibration feeder, rod-toothed crusher A, screening machine A, rod-toothed crusher B, rod-toothed crusher C, regeneration are thick Aggregate storing case and recycled fine aggregate storage bin, the vibration feeder top are provided with charging aperture, and vibration feeder motor spindle is provided with Feeding is exported, and the outlet of the feeding of vibration feeder is connected with rod-toothed crusher A, and there is the rod-toothed crusher A aperture to be The material outlet A of the material outlet A of 40mm, rod-toothed crusher A is connected with screening machine A；The rod-toothed crusher A is used for preliminary Smashing waste mixed mud is crushed to discarded mixed mud particle and by particle diameter for the discarded mixed mud particle of below 40mm is delivered to sieve In extension set A, screening machine A top movables are hinged with and take barred window, be provided with electromagnet on barred window madial wall taking；The screening machine A points It is not connected with rod-toothed crusher B, rod-toothed crusher C, the screening machine A is used for the discarded mixed mud of below particle diameter 40mm It is that the discarded mixed mud particles of 10~40mm and particle diameter discard mixed mud particle less than 10mm that grain is sieved into particle diameter, and wherein particle diameter is 10 The discarded mixed mud particles of~40mm are delivered to rod-toothed crusher B by screening machine A, and particle diameter leads to less than the discarded mixed mud particles of 10mm Cross screening machine A and be delivered to rod-toothed crusher C；It is the discarded mixed mud particles of 10~40mm that the rod-toothed crusher B is used for particle diameter Below particle diameter 25mm is crushed to, rod-toothed crusher B has the material outlet B that aperture is 25mm, the material outlet of rod-toothed crusher B B is connected with screening machine B, the screening machine B be used for by the discarded mixed mud particle screening of below particle diameter 25mm into particle diameter be 5~ , less than the discarded mixed mud particles of 5mm, wherein particle diameter is the discarded mixed mud particles of 5~25mm for the discarded mixed mud particles of 25mm and particle diameter Regenerated coarse aggregate storage bin is delivered to by screening machine B, particle diameter is delivered to less than the discarded mixed mud particles of 5mm by screening machine B Recycled fine aggregate storage bin；The rod-toothed crusher C is used for particle diameter less than the discarded mixed mud Particle Breakages of 10mm to particle diameter 5mm Hereinafter, the rod-toothed crusher C has material outlet C and the regeneration of the material outlet C, the rod-toothed crusher C that aperture is 5mm Fine aggregate storage bin is connected；

Discarded mixed mud is entered into vibration feeder by conveying conveyer belt from the charging aperture at the top of vibration feeder, is shaken Dynamic feeding machine feeds discarded mixed mud raw material using vibration feeder mode to rod-toothed crusher A, and rod-toothed crusher A is to discarded mixed mud Native raw material carries out splitting break process and obtains discarded mixed mud particle, and the discarded mixed mud particle of below particle diameter 40mm is by tooth The material outlet A of roll crusher A is entered into screening machine A, when discarded mixed mud particle is by screening machine A tops, chalybeate Matter will have been attracted by electromagnet, periodically open taking barred window and cleaning out the iron compound on electromagnet on screening machine A；Particle diameter is big To continue to carry out splitting break process in rod-toothed crusher A in the discarded mixed mud particle of 40mm；

The discarded mixed mud particle screening of below particle diameter 40mm is that 10~40mm discards mixed mud into particle diameter by screening machine A , less than the discarded mixed mud particles of 10mm, wherein particle diameter is that the discarded mixed mud particles of 10~40mm are defeated by screening machine A for grain and particle diameter Rod-toothed crusher B is delivered to, particle diameter is delivered to rod-toothed crusher C less than the discarded mixed mud particles of 10mm by screening machine A；

Rod-toothed crusher B is that the discarded mixed mud particles of 10~40mm carry out splitting break process to particle diameter, particle diameter 25mm with Under discarded mixed mud particle entered into screening machine B by the material outlet B of rod-toothed crusher B, particle diameter is useless more than 25mm Abandoning mixed mud particle will continue to carry out splitting break process in rod-toothed crusher B；Screening machine B is discarded below particle diameter 25mm's Mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud particle, wherein grain less than 5mm into particle diameter Footpath is that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin by screening machine B, and particle diameter is 5~25mm's Discarded mixed mud particle is regenerated coarse aggregate；Particle diameter is delivered to the thin bone of regeneration less than the discarded mixed mud particles of 5mm by screening machine B Material storage bin, particle diameter is recycled fine aggregate less than the discarded mixed mud particles of 5mm；

Discarded mixed mud particles of the rod-toothed crusher C to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin by the material outlet C of rod-toothed crusher C；Particle diameter is more than The discarded mixed mud particle of 5mm will continue to carry out splitting break process in rod-toothed crusher C, and below particle diameter 5mm's is discarded mixed Mud particles are recycled fine aggregate；

It is prepared by B, regenerative gel material：By the regenerated coarse aggregate and recycled fine aggregate of regenerated coarse aggregate storage bin in step A The recycled fine aggregate of storage bin carries out proportioning and is made regenerative gel mixed material according to following mass fraction：

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Then regenerative gel mixed material is obtained again for 4.5 hours~5.2 hours in 680 DEG C~710 DEG C temperature lower calcinations Rubber gel material；

C, concrete building brick material mixture ratio：Concrete building brick material is matched into according to following mass fraction：

Regenerative gel material：550~700 parts；

Polypropylene fibre：3~7 parts；

Cement：300~400 parts；

Silica flour：50~70 parts；Wherein the average grain diameter of silica flour is 0.1~1.3 μm；

Haydite：40~55 parts；Wherein haydite is the particle of 1.0~3.6mm of particle diameter；

Bonding agent：50~60 parts；

Pore former or foaming agent：5~8 parts；

By concrete building brick material stirring be sufficiently mixed, then in concrete building brick material add mass fraction be 80~ 90 parts of water is stirred 20~30 minutes for the first time；It is subsequently added into the water that mass fraction is 100~120 parts and stirs 30~45 second Minute obtains concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks shaping mould It is molded in tool, the demoulding is made hollow concrete and lays bricks after then standing 14~17 hours, and the hollow concrete after the demoulding is laid bricks Carry out curing with carbon dioxide 6.5~7 hours, gas concentration lwevel during curing with carbon dioxide is 30~100%, and controls sky The moisture content of heart concrete building brick is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

In order to the present invention is better achieved, the recycled fine aggregate storage bin bottom connection is provided with vibrating screen classifier, vibrates Screening motor spindle is provided with fine powder storage bin, and water is held in fine powder storage bin, and it is 0.5mm that the vibrosieve motor spindle has aperture Material outlet D, the material outlet D of vibrosieve motor spindle is connected with fine powder storage bin；

In step, recycled fine aggregate storage bin stores the discarded mixed mud particle of below particle diameter 5mm, vibrating screen classifier The discarded mixed mud particulate emission of below particle diameter 0.5mm in recycled fine aggregate storage bin is transported in fine powder storage bin, particle diameter The discarded mixed mud particle of below 0.5mm falls into the water of fine powder storage bin and would not fly again；Now recycled fine aggregate storage Case excludes the more excellent recycled fine aggregate of discarded mixed mud particle constituent of below particle diameter 0.5mm.

Preferably, the bonding agent is epoxy resin or waterglass, the pore former is linear phenol-aldehyde resin, poly- second two The mixture of alcohol, the foaming agent is cement blowing agent.

Currently preferred hollow concrete is laid bricks preparation method technical scheme, and its method and step is as follows：

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Discarded mixed mud Entered into vibration feeder from the charging aperture at the top of vibration feeder by conveying conveyer belt, vibration feeder is fed using vibration Material mode feeds discarded mixed mud raw material to rod-toothed crusher A, and it is broken that rod-toothed crusher A carries out splitting to discarded mixed mud raw material Discarded mixed mud particle is processed and obtains, the discarded mixed mud particle of below particle diameter 40mm goes out by the material of rod-toothed crusher A Mouth A is entered into screening machine A, and when discarded mixed mud particle is by screening machine A tops, iron compound will be attracted by electromagnet Firmly, taking barred window and cleaning out the iron compound on electromagnet on screening machine A is periodically opened；Discarded mixed mud of the particle diameter more than 40mm Soil particle will continue to carry out splitting break process in rod-toothed crusher A；

Rod-toothed crusher B is that the discarded mixed mud particles of 10~40mm carry out splitting break process to particle diameter, particle diameter 25mm with Under discarded mixed mud particle entered into screening machine B by the material outlet B of rod-toothed crusher B, particle diameter is useless more than 25mm Abandoning mixed mud particle will continue to carry out splitting break process in rod-toothed crusher B；Screening machine B is discarded below particle diameter 25mm's Mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud particle, wherein grain less than 5mm into particle diameter Footpath is that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin by screening machine B, and particle diameter is 5~25mm's Discarded mixed mud particle is regenerated coarse aggregate；Particle diameter is delivered to the thin bone of regeneration less than the discarded mixed mud particles of 5mm by screening machine B Material storage bin；

Discarded mixed mud particles of the rod-toothed crusher C to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin by the material outlet C of rod-toothed crusher C；Particle diameter is more than The discarded mixed mud particle of 5mm will continue to carry out splitting break process in rod-toothed crusher C；

Recycled fine aggregate storage bin stores the discarded mixed mud particle of below particle diameter 5mm, and vibrating screen classifier will regenerate thin bone The discarded mixed mud particulate emission of below particle diameter 0.5mm is transported in fine powder storage bin in material storage bin, below particle diameter 0.5mm Discarded mixed mud particle falls into the water of fine powder storage bin and would not fly again；Now recycled fine aggregate storage bin storage particle diameter is big Discarded mixed mud particle in 0.5mm and less than or equal to 5mm, the discarded mixed mud particle is recycled fine aggregate；

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Regenerative gel material：600~670 parts；

Polypropylene fibre：3~5 parts；Its fibre length is 1.5~200.0mm；

Cement：320~360 parts；

Silica flour：54~65 parts；Wherein the average grain diameter of silica flour is 0.3~0.8 μm；

Haydite：45~50 parts；Wherein haydite is the particle of 1.5~3.0mm of particle diameter；

Bonding agent：52~56 parts；Bonding agent is epoxy resin；

Pore former：5~8 parts；Pore former is linear phenol-aldehyde resin, the mixture of polyethylene glycol；

By concrete building brick material stirring be sufficiently mixed, then in concrete building brick material add mass fraction be 80~ 90 parts of water is stirred 20~30 minutes for the first time；It is subsequently added into the water that mass fraction is 110~120 parts and stirs 30~45 second Minute obtains concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks shaping mould It is molded in tool, the demoulding is made hollow concrete and lays bricks after then standing 15~16 hours, and the hollow concrete after the demoulding is laid bricks Carry out curing with carbon dioxide 7 hours, gas concentration lwevel during curing with carbon dioxide is 45~100%, and control hollow mixed The moisture content that solidifying soil is laid bricks is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

The first preferred specific hollow concrete brick masonry scheme of the invention, its method and step is as follows：

Regenerated coarse aggregate：250 parts；

Recycled fine aggregate：120 parts；

Then by regenerative gel mixed material in 680 DEG C of temperature lower calcinations, 4.5 hours prepared regenerative gel materials；

Regenerative gel material：600 parts；

Polypropylene fibre：3 parts；Its fibre length is 1.5~200.0mm；

Cement：320 parts；

Silica flour：54 parts；Wherein the average grain diameter of silica flour is 0.3~0.8 μm；

Haydite：45 parts；Wherein haydite is the particle of 1.5~3.0mm of particle diameter；

Bonding agent：52 parts；Bonding agent is epoxy resin；

Pore former：5 parts；Pore former is linear phenol-aldehyde resin, the mixture of polyethylene glycol；

The stirring of concrete building brick material is sufficiently mixed, is then 80 parts to mass fraction is added in concrete building brick material Water for the first time stirring 20 minutes；It is subsequently added into second stirring of water that mass fraction is 110 parts and obtains within 30 minutes concrete block Brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks shaping mould It is molded in tool, the demoulding is made hollow concrete and lays bricks after then standing 15 hours, and the hollow concrete after the demoulding is laid bricks to be carried out Curing with carbon dioxide 7 hours, gas concentration lwevel during curing with carbon dioxide is 45%, and controls what hollow concrete was laid bricks Moisture content is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

Second preferred specific hollow concrete brick masonry scheme of the present invention, its method and step is as follows：

Regenerated coarse aggregate：300 parts；

Recycled fine aggregate：160 parts；

Then by regenerative gel mixed material in 710 DEG C of temperature lower calcinations, 5.2 hours prepared regenerative gel materials；

Regenerative gel material：670 parts；

Polypropylene fibre：5 parts；Its fibre length is 1.5~200.0mm；

Cement：360 parts；

Silica flour：65 parts；Wherein the average grain diameter of silica flour is 0.3~0.8 μm；

Haydite：50 parts；Wherein haydite is the particle of 1.5~3.0mm of particle diameter；

Bonding agent：56 parts；Bonding agent is epoxy resin；

Pore former：8 parts；Pore former is linear phenol-aldehyde resin, the mixture of polyethylene glycol；

The stirring of concrete building brick material is sufficiently mixed, is then 90 parts to mass fraction is added in concrete building brick material Water for the first time stirring 20~30 minutes；Second stirring of water that mass fraction is 120 parts is subsequently added into obtain within 30~45 minutes Concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks shaping mould It is molded in tool, the demoulding is made hollow concrete and lays bricks after then standing 16 hours, and the hollow concrete after the demoulding is laid bricks to be carried out Curing with carbon dioxide 7 hours, gas concentration lwevel during curing with carbon dioxide is 100%, and controls hollow concrete to lay bricks Moisture content be less than 10wt%, finally obtain hollow concrete and lay bricks finished product.

The third preferred specific hollow concrete brick masonry scheme of the invention, its method and step is as follows：

Regenerated coarse aggregate：275 parts；

Recycled fine aggregate：140 parts；

Then by regenerative gel mixed material in 695 DEG C of temperature lower calcinations, 5 hours prepared regenerative gel materials；

Regenerative gel material：635 parts；

Polypropylene fibre：4 parts；Its fibre length is 1.5~200.0mm；

Cement：340 parts；

Silica flour：60 parts；Wherein the average grain diameter of silica flour is 0.3~0.8 μm；

Haydite：47 parts；Wherein haydite is the particle of 1.5~3.0mm of particle diameter；

Bonding agent：54 parts；Bonding agent is epoxy resin；

Pore former：6 parts；Pore former is linear phenol-aldehyde resin, the mixture of polyethylene glycol；

The stirring of concrete building brick material is sufficiently mixed, is then 85 parts to mass fraction is added in concrete building brick material Water for the first time stirring 20~30 minutes；Second stirring of water that mass fraction is 115 parts is subsequently added into obtain within 30~45 minutes Concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks shaping mould It is molded in tool, the demoulding is made hollow concrete and lays bricks after then standing 16 hours, and the hollow concrete after the demoulding is laid bricks to be carried out Curing with carbon dioxide 7 hours, gas concentration lwevel during curing with carbon dioxide is 60%, and controls what hollow concrete was laid bricks Moisture content is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

The present invention compared with the prior art, with advantages below and beneficial effect：

(1) discarded concrete is crushed, screened by the present invention and hybrid reaction produces regenerative gel material in proportion, then Prepare hollow concrete and lay bricks with reference to regenerative gel material and other proportioning components, can be utilized with spread, have Wide market prospects, and substantial amounts of mine resources have been saved, improve the economic worth of discarded concrete.

(2) the rod-toothed crusher A of retracting device of the invention carries out first break to particle diameter and is to discarded concrete The discarded mixed mud particle of below 40mm, then rod-toothed crusher B will particle diameter be wherein the discarded mixed mud particles of 10~40mm the Second-time breakage obtains particle diameter for 5~25mm is useless after crushing for the second time to the discarded mixed mud particle of below particle diameter 25mm through screening Mixed mud particle (i.e. regenerated coarse aggregate) is abandoned, it is less than the discarded mixed mud particles of 10mm to obtain particle diameter through screening after crushing for the second time (i.e. recycled fine aggregate), then rod-toothed crusher C by particle diameter less than the discarded mixed mud Particle Breakages of 10mm to below particle diameter 5mm simultaneously Obtain recycled fine aggregate.So, by the tertiary crushing of retracting device of the invention, sieving twice just can be all at present big Small, species discarded concrete obtains regenerated coarse aggregate and recycled fine aggregate through broken, screening, obtained regenerated coarse aggregate, The quality of recycled fine aggregate is higher, efficiency is also higher.

(3) regenerative gel material of the invention is formed by regenerated coarse aggregate and recycled fine aggregate high-temperature calcination, effectively profit With discarded concrete and mine resources are saved；The present invention combines polypropylene fibre, water based on regenerative gel material Mud, silica flour, haydite, bonding agent, pore former or foaming agent match into concrete building brick material jointly, then by concrete building brick Material molds shaping produces hollow concrete and lays bricks, and is laid bricks finished product by obtaining hollow concrete after curing with carbon dioxide, this Sample just takes full advantage of substantial amounts of discarded concrete, and turns waste into wealth and produced a large amount of products of laying bricks for using of civil construction Product, the hollow concrete lay bricks cob brick structural behaviour that finished product sintered than traditional soil more preferably, intensity it is higher, its is hollow mixed The lay bricks shearing strength of finished product of solidifying soil is only slightly lower than armored concrete, can be widely used in the non-shearing in high building or superelevation building Wall is constructed or small high-rise load bearing wall is constructed, with superior cold-proof, sound insulation value.Due to hollow concrete lay bricks finished product inside it is non- Whole solid constructions, hollow concrete finished product inside of laying bricks has the shaping micro-bubble structure of uneven distribution, and the shaping is micro- Stingy bubble structure is similar to cellular, and its weight is lighter compared to solid concrete, and the shaping micro-bubble structure can rise To the effect of efficient warming.

Brief description of the drawings

Fig. 1 is the structural representation of retracting device of the present invention.

Wherein, it is entitled corresponding to the reference in accompanying drawing：

1- vibration feeders, 2- rod-toothed crushers A, 3- screening machine A, 4- rod-toothed crusher B, 5- rod-toothed crusher C, 6- screening machine B, 7- regenerated coarse aggregate storage bin, 8- recycled fine aggregate storage bins, 81- vibrating screen classifiers.

Specific embodiment

The present invention is described in further detail with reference to embodiment：

Embodiment

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Filled including reclaiming Put, as shown in figure 1, retracting device includes vibration feeder 1, rod-toothed crusher A2, screening machine A3, rod-toothed crusher B4, discaling roll Disintegrating machine C, regenerated coarse aggregate storage bin 7 and recycled fine aggregate storage bin 8, the top of vibration feeder 1 are provided with charging aperture, and vibration is fed The bottom of material machine 1 is provided with feeding outlet, and the feeding outlet of vibration feeder 1 is connected with rod-toothed crusher A2, rod-toothed crusher A2 It is the material outlet A of 40mm with aperture, the material outlet A of rod-toothed crusher A2 is connected with screening machine A3；Rod-toothed crusher A2 is crushed to discarded mixed mud particle and is the discarded mixed mud of below 40mm by particle diameter for preliminary smashing waste mixed mud Grain is delivered in screening machine A3, and screening machine A3 top movables are hinged with and take barred window, and electromagnet 31 is provided with barred window madial wall taking； Screening machine A3 is connected with rod-toothed crusher B4, rod-toothed crusher C respectively, and screening machine A3 is used for the discarded of below particle diameter 40mm Mixed mud particle screening is that the discarded mixed mud particles of 10~40mm and particle diameter discard mixed mud particle less than 10mm into particle diameter, wherein Particle diameter is that the discarded mixed mud particles of 10~40mm are delivered to rod-toothed crusher B4 by screening machine A3, and particle diameter is discarded less than 10mm mixed Mud particles are delivered to rod-toothed crusher C by screening machine A3；It is 10~40mm discarded mixed that rod-toothed crusher B4 is used for particle diameter Mud particles are crushed to below particle diameter 25mm, and rod-toothed crusher B4 has the material outlet B, rod-toothed crusher B4 that aperture is 25mm Material outlet B connected with screening machine B6, screening machine B6 is used for the discarded mixed mud particle screening granulating of below particle diameter 25mm Footpath is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud particle less than 5mm, and wherein particle diameter is 5~25mm discarded mixed Mud particles are delivered to regenerated coarse aggregate storage bin 7 by screening machine B6, and particle diameter is less than the discarded mixed mud particles of 5mm by screening Machine B6 is delivered to recycled fine aggregate storage bin 8；Rod-toothed crusher C is used for particle diameter less than the discarded mixed mud Particle Breakages of 10mm extremely Below particle diameter 5mm, rod-toothed crusher C have the material outlet C that aperture is 5mm, material outlet C and the regeneration of rod-toothed crusher C Fine aggregate storage bin 8 is connected；

Discarded mixed mud is entered into vibration feeder 1 by conveying conveyer belt from the charging aperture at the top of vibration feeder 1, Vibration feeder 1 feeds discarded mixed mud raw material using vibration feeder mode to rod-toothed crusher A2, and rod-toothed crusher A2 is to useless Abandoning mixed mud raw material carries out splitting break process and obtains discarded mixed mud particle, the discarded mixed mud particle of below particle diameter 40mm Entered into screening machine A3 by the material outlet A of rod-toothed crusher A2, in discarded mixed mud particle by screening machine A3 tops When, iron compound will have been attracted by electromagnet 31, periodically open taking barred window and cleaning out on electromagnet 31 on screening machine A3 Iron compound；Discarded mixed mud particle of the particle diameter more than 40mm will continue to carry out splitting break process in rod-toothed crusher A2；

The discarded mixed mud particle screening of below particle diameter 40mm is that 10~40mm discards mixed mud into particle diameter by screening machine A3 , less than the discarded mixed mud particles of 10mm, wherein particle diameter is that the discarded mixed mud particles of 10~40mm pass through screening machine A3 for particle and particle diameter Rod-toothed crusher B4 is delivered to, particle diameter is delivered to rod-toothed crusher C less than the discarded mixed mud particles of 10mm by screening machine A3；

Rod-toothed crusher B4 is that the discarded mixed mud particles of 10~40mm carry out splitting break process to particle diameter, particle diameter 25mm with Under discarded mixed mud particle entered into screening machine B6 by the material outlet B of rod-toothed crusher B4, particle diameter is more than 25mm Discarded mixed mud particle will continue to carry out splitting break process in rod-toothed crusher B4；Screening machine B6 is by below particle diameter 25mm Discarded mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud particle less than 5mm into particle diameter, its Middle particle diameter is that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin 7 by screening machine B6, particle diameter is 5~ The discarded mixed mud particle of 25mm is regenerated coarse aggregate；Particle diameter is delivered to less than the discarded mixed mud particles of 5mm by screening machine B6 Recycled fine aggregate storage bin 8, particle diameter is recycled fine aggregate less than the discarded mixed mud particles of 5mm；

Discarded mixed mud particles of the rod-toothed crusher C to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin 8 by the material outlet C of rod-toothed crusher C；Particle diameter is more than The discarded mixed mud particle of 5mm will continue to carry out splitting break process in rod-toothed crusher C, and below particle diameter 5mm's is discarded mixed Mud particles are recycled fine aggregate；

It is prepared by B, regenerative gel material：By the regenerated coarse aggregate and recycled fine aggregate of regenerated coarse aggregate storage bin 7 in step A The recycled fine aggregate of storage bin 8 carries out proportioning and is made regenerative gel mixed material according to following mass fraction：

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Regenerative gel material：550~700 parts；

Polypropylene fibre：3~7 parts；

Cement：300~400 parts；

Bonding agent：50~60 parts；

Pore former or foaming agent：5~8 parts；

As shown in figure 1, the connection of the bottom of recycled fine aggregate storage bin 8 is provided with vibrating screen classifier 81, the bottom of vibrating screen classifier 81 Fine powder storage bin is provided with, water is held in fine powder storage bin, the bottom of vibrating screen classifier 81 has the material outlet D that aperture is 0.5mm, The material outlet D of the bottom of vibrating screen classifier 81 is connected with fine powder storage bin；

In step, recycled fine aggregate storage bin 8 stores the discarded mixed mud particle of below particle diameter 5mm, vibrating screen classifier 81 are transported in fine powder storage bin the discarded mixed mud particulate emission of below particle diameter 0.5mm in recycled fine aggregate storage bin 8, grain The discarded mixed mud particle of below footpath 0.5mm falls into the water of fine powder storage bin and would not fly again；Now recycled fine aggregate storage Deposit the more excellent recycled fine aggregate of discarded mixed mud particle constituent that case 8 excludes below particle diameter 0.5mm.

Currently preferred bonding agent is epoxy resin or waterglass, and currently preferred pore former is line style phenolic aldehyde tree The mixture of fat, polyethylene glycol, currently preferred foaming agent is cement blowing agent.

The further preferred hollow concrete of the present invention is laid bricks preparation method technical scheme, and its method and step is as follows：

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Discarded mixed mud Entered into vibration feeder 1 from the charging aperture at the top of vibration feeder 1 by conveying conveyer belt, vibration feeder 1 is used and shaken Dynamic feeding manner feeds discarded mixed mud raw material to rod-toothed crusher A2, and rod-toothed crusher A2 splits to discarded mixed mud raw material Split break process and obtain discarded mixed mud particle, the discarded mixed mud particle of below particle diameter 40mm is by rod-toothed crusher A2's Material outlet A is entered into screening machine A3, and when discarded mixed mud particle is by screening machine A3 tops, iron compound will be by electromagnetism Iron 31 has been attracted, and periodically opens taking barred window and cleaning out the iron compound on electromagnet 31 on screening machine A3；Particle diameter is more than The discarded mixed mud particle of 40mm will continue to carry out splitting break process in rod-toothed crusher A2；

Rod-toothed crusher B4 is that the discarded mixed mud particles of 10~40mm carry out splitting break process to particle diameter, particle diameter 25mm with Under discarded mixed mud particle entered into screening machine B6 by the material outlet B of rod-toothed crusher B4, particle diameter is more than 25mm Discarded mixed mud particle will continue to carry out splitting break process in rod-toothed crusher B4；Screening machine B6 is by below particle diameter 25mm Discarded mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud particle less than 5mm into particle diameter, its Middle particle diameter is that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin 7 by screening machine B6, particle diameter is 5~ The discarded mixed mud particle of 25mm is regenerated coarse aggregate；Particle diameter is delivered to less than the discarded mixed mud particles of 5mm by screening machine B6 Recycled fine aggregate storage bin 8；

Discarded mixed mud particles of the rod-toothed crusher C to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin 8 by the material outlet C of rod-toothed crusher C；Particle diameter is more than The discarded mixed mud particle of 5mm will continue to carry out splitting break process in rod-toothed crusher C；

Recycled fine aggregate storage bin 8 stores the discarded mixed mud particle of below particle diameter 5mm, and vibrating screen classifier 81 will regenerate thin The discarded mixed mud particulate emission of below particle diameter 0.5mm is transported in fine powder storage bin in aggregate storing case 8, particle diameter 0.5mm with Under discarded mixed mud particle fall into the water of fine powder storage bin and would not fly again；Now recycled fine aggregate storage bin 8 is stored Particle diameter is more than 0.5mm and the discarded mixed mud particle less than or equal to 5mm, and the discarded mixed mud particle is recycled fine aggregate；

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Regenerative gel material：600~670 parts；

Polypropylene fibre：3~5 parts；Its fibre length is 1.5~200.0mm；

Cement：320~360 parts；

Bonding agent：52~56 parts；Bonding agent is epoxy resin；

Embodiment one

Regenerated coarse aggregate：250 parts；

Recycled fine aggregate：120 parts；

Regenerative gel material：600 parts；

Polypropylene fibre：3 parts；Its fibre length is 1.5~200.0mm；

Cement：320 parts；

Bonding agent：52 parts；Bonding agent is epoxy resin；

Embodiment two

Regenerated coarse aggregate：300 parts；

Recycled fine aggregate：160 parts；

Regenerative gel material：670 parts；

Polypropylene fibre：5 parts；Its fibre length is 1.5~200.0mm；

Cement：360 parts；

Bonding agent：56 parts；Bonding agent is epoxy resin；

Embodiment three

Regenerated coarse aggregate：275 parts；

Recycled fine aggregate：140 parts；

Regenerative gel material：635 parts；

Polypropylene fibre：4 parts；Its fibre length is 1.5~200.0mm；

Cement：340 parts；

Bonding agent：54 parts；Bonding agent is epoxy resin；

Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims

1. a kind of utilization discarded concrete prepares the preparation method that hollow concrete is laid bricks, it is characterised in that：Its method and step is such as Under：

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Including retracting device, Retracting device includes vibration feeder (1), rod-toothed crusher A (2), screening machine A (3), rod-toothed crusher B (4), rod-toothed crusher C (5), regenerated coarse aggregate storage bin (7) and recycled fine aggregate storage bin (8), vibration feeder (1) top are provided with charging Mouthful, vibration feeder (1) bottom is provided with feeding outlet, and the feeding outlet of vibration feeder (1) is connected with rod-toothed crusher A (2) Logical, the rod-toothed crusher A (2) is the material outlet A of 40mm, material outlet A and the sieve of rod-toothed crusher A (2) with aperture Extension set A (3) is connected；The rod-toothed crusher A (2) is crushed to discarded mixed mud particle simultaneously for preliminary smashing waste mixed mud By particle diameter for the discarded mixed mud particle of below 40mm is delivered in screening machine A (3), screening machine A (3) top movable is hinged with and takes Barred window, be provided with barred window madial wall electromagnet (31) taking；The screening machine A (3) is broken with rod-toothed crusher B (4), discaling roll respectively Broken machine C (5) is connected, the screening machine A (3) for by the discarded mixed mud particle screening of below particle diameter 40mm into particle diameter be 10 , less than the discarded mixed mud particles of 10mm, wherein particle diameter is that 10~40mm discards mixed mud for the discarded mixed mud particles of~40mm and particle diameter Particle is delivered to rod-toothed crusher B (4) by screening machine A (3), and particle diameter passes through screening machine A less than the discarded mixed mud particles of 10mm (3) it is delivered to rod-toothed crusher C (5)；The rod-toothed crusher B (4) is for being the discarded mixed mud particles of 10~40mm by particle diameter Below particle diameter 25mm is crushed to, rod-toothed crusher B (4) is the material outlet B of 25mm, the thing of rod-toothed crusher B (4) with aperture Material outlet B is connected with screening machine B (6), and the screening machine B (6) is for by the discarded mixed mud particle screening of below particle diameter 25mm Into particle diameter be the discarded mixed mud particles of 5~25mm and particle diameter less than the discarded mixed mud particles of 5mm, wherein particle diameter is that 5~25mm gives up Abandon mixed mud particle and regenerated coarse aggregate storage bin (7) is delivered to by screening machine B (6), particle diameter is less than the discarded mixed mud particles of 5mm Recycled fine aggregate storage bin (8) is delivered to by screening machine B (6)；The rod-toothed crusher C (5) by particle diameter for being less than 10mm Discarded mixed mud Particle Breakage to below particle diameter 5mm, the rod-toothed crusher C (5) is the material outlet C of 5mm, institute with aperture The material outlet C for stating rod-toothed crusher C (5) is connected with recycled fine aggregate storage bin (8)；

Discarded charging aperture of the mixed mud by conveying conveyer belt from the top of vibration feeder (1) is entered into vibration feeder (1), Vibration feeder (1) feeds discarded mixed mud raw material, rod-toothed crusher A using vibration feeder mode to rod-toothed crusher A (2) (2) splitting break process is carried out to discarded mixed mud raw material and discarded mixed mud particle is obtained, below particle diameter 40mm's is discarded mixed Mud particles are entered into screening machine A (3) by the material outlet A of rod-toothed crusher A (2), are passed through in discarded mixed mud particle During screening machine A (3) top, iron compound will have been attracted by electromagnet (31), periodically be opened and take barred window simultaneously on screening machine A (3) Clean out the iron compound on electromagnet (31)；Discarded mixed mud particle of the particle diameter more than 40mm will continue in rod-toothed crusher A (2) splitting break process is carried out in；

The discarded mixed mud particle screening of below particle diameter 40mm is that 10~40mm discards mixed mud into particle diameter by screening machine A (3) , less than the discarded mixed mud particles of 10mm, wherein particle diameter is that the discarded mixed mud particles of 10~40mm pass through screening machine A (3) for grain and particle diameter Rod-toothed crusher B (4) is delivered to, particle diameter is delivered to rod-toothed crusher less than the discarded mixed mud particles of 10mm by screening machine A (3) C(5)；

Rod-toothed crusher B (4) is that the discarded mixed mud particles of 10~40mm carry out splitting break process, below particle diameter 25mm to particle diameter Discarded mixed mud particle entered into screening machine B (6) by the material outlet B of rod-toothed crusher B (4), particle diameter be more than 25mm Discarded mixed mud particle will continue carry out splitting break process in rod-toothed crusher B (4)；Screening machine B (6) is by particle diameter 25mm Following discarded mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud less than 5mm into particle diameter Particle, wherein particle diameter are that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin by screening machine B (6) (7), particle diameter is that the discarded mixed mud particle of 5~25mm is regenerated coarse aggregate；Particle diameter is less than the discarded mixed mud particles of 5mm by sieve Extension set B (6) is delivered to recycled fine aggregate storage bin (8), and particle diameter is recycled fine aggregate less than the discarded mixed mud particles of 5mm；

Discarded mixed mud particles of the rod-toothed crusher C (5) to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin (8) by the material outlet C of rod-toothed crusher C (5)；Particle diameter Discarded mixed mud particle more than 5mm will continue to carry out splitting break process, below particle diameter 5mm in rod-toothed crusher C (5) Discarded mixed mud particle is recycled fine aggregate；

It is prepared by B, regenerative gel material：The regenerated coarse aggregate of regenerated coarse aggregate storage bin (7) in step A and recycled fine aggregate are stored up Deposit the recycled fine aggregate of case (8) and carry out proportioning according to following mass fraction and be made regenerative gel mixed material：

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Then by regenerative gel mixed material in 680 DEG C~710 DEG C temperature lower calcinations, 4.5 hours~5.2 hours prepared reclaimed rubbers Gel material；

Regenerative gel material：550~700 parts；

Polypropylene fibre：3~7 parts；

Cement：300~400 parts；

Bonding agent：50~60 parts；

Pore former or foaming agent：5~8 parts；

The stirring of concrete building brick material is sufficiently mixed, is then 80~90 parts to mass fraction is added in concrete building brick material Water for the first time stirring 20~30 minutes；The water that mass fraction is 100~120 parts is subsequently added into stir 30~45 minutes for second Obtain concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks in mould Shaping, the demoulding is made hollow concrete and lays bricks after then standing 14~17 hours, and the hollow concrete after the demoulding is laid bricks to be carried out Curing with carbon dioxide 6.5~7 hours, gas concentration lwevel during curing with carbon dioxide is 30~100%, and is controlled hollow mixed The moisture content that solidifying soil is laid bricks is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

2. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 1, its feature exists In：Recycled fine aggregate storage bin (8) the bottom connection is provided with vibrating screen classifier (81), and vibrating screen classifier (81) bottom is provided with carefully Powder storage bin, holds water in fine powder storage bin, vibrating screen classifier (81) bottom has the material outlet D that aperture is 0.5mm, The material outlet D of vibrating screen classifier (81) bottom is connected with fine powder storage bin；

In step, recycled fine aggregate storage bin (8) stores the discarded mixed mud particle of below particle diameter 5mm, vibrating screen classifier (81) the discarded mixed mud particulate emission of below particle diameter 0.5mm in recycled fine aggregate storage bin (8) is transported to fine powder storage bin In, the discarded mixed mud particle of below particle diameter 0.5mm falls into the water of fine powder storage bin and would not fly again；Now regenerate thin bone Material storage bin (8) excludes the more excellent recycled fine aggregate of discarded mixed mud particle constituent of below particle diameter 0.5mm.

3. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 1 or 2, its feature It is：The bonding agent be epoxy resin or waterglass, the pore former be linear phenol-aldehyde resin, the mixture of polyethylene glycol, The foaming agent is cement blowing agent.

4. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 3, its feature exists In：Its method and step is as follows：

A, using discarded mixed mud by retracting device reclaim be obtained regenerated coarse aggregate and recycled fine aggregate：Discarded mixed mud passes through Charging aperture of the conveying conveyer belt from the top of vibration feeder (1) is entered into vibration feeder (1), and vibration feeder (1) is used Vibration feeder mode feeds discarded mixed mud raw material to rod-toothed crusher A (2), and rod-toothed crusher A (2) is to discarded mixed mud raw material Carry out splitting break process and obtain discarded mixed mud particle, the discarded mixed mud particle of below particle diameter 40mm is broken by discaling roll The material outlet A of machine A (2) is entered into screening machine A (3), when discarded mixed mud particle is by screening machine A (3) top, iron content Material will have been attracted by electromagnet (31), periodically open taking barred window and cleaning out containing on electromagnet (31) on screening machine A (3) Iron substance；Discarded mixed mud particle of the particle diameter more than 40mm will continue to carry out splitting break process in rod-toothed crusher A (2)；

Rod-toothed crusher B (4) is that the discarded mixed mud particles of 10~40mm carry out splitting break process, below particle diameter 25mm to particle diameter Discarded mixed mud particle entered into screening machine B (6) by the material outlet B of rod-toothed crusher B (4), particle diameter be more than 25mm Discarded mixed mud particle will continue carry out splitting break process in rod-toothed crusher B (4)；Screening machine B (6) is by particle diameter 25mm Following discarded mixed mud particle screening is that the discarded mixed mud particles of 5~25mm and particle diameter discard mixed mud less than 5mm into particle diameter Particle, wherein particle diameter are that the discarded mixed mud particle of 5~25mm is delivered to regenerated coarse aggregate storage bin by screening machine B (6) (7), particle diameter is that the discarded mixed mud particle of 5~25mm is regenerated coarse aggregate；Particle diameter is less than the discarded mixed mud particles of 5mm by sieve Extension set B (6) is delivered to recycled fine aggregate storage bin (8)；

Discarded mixed mud particles of the rod-toothed crusher C (5) to particle diameter less than 10mm carries out splitting break process, below particle diameter 5mm Discarded mixed mud particle entered into recycled fine aggregate storage bin (8) by the material outlet C of rod-toothed crusher C (5)；Particle diameter Discarded mixed mud particle more than 5mm will continue to carry out splitting break process in rod-toothed crusher C (5)；

Recycled fine aggregate storage bin (8) stores the discarded mixed mud particle of below particle diameter 5mm, and vibrating screen classifier (81) will regenerate thin The discarded mixed mud particulate emission of below particle diameter 0.5mm is transported in fine powder storage bin in aggregate storing case (8), particle diameter 0.5mm Following discarded mixed mud particle falls into the water of fine powder storage bin and would not fly again；Now recycled fine aggregate storage bin (8) Storage particle diameter is more than 0.5mm and the discarded mixed mud particle less than or equal to 5mm, and the discarded mixed mud particle is recycled fine aggregate；

Regenerated coarse aggregate：250~300 parts；

Recycled fine aggregate：120~160 parts；

Regenerative gel material：600~670 parts；

Polypropylene fibre：3~5 parts；Its fibre length is 1.5~200.0mm；

Cement：320~360 parts；

Bonding agent：52~56 parts；Bonding agent is epoxy resin；

The stirring of concrete building brick material is sufficiently mixed, is then 80~90 parts to mass fraction is added in concrete building brick material Water for the first time stirring 20~30 minutes；The water that mass fraction is 110~120 parts is subsequently added into stir 30~45 minutes for second Obtain concrete building brick slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks in mould Shaping, the demoulding is made hollow concrete and lays bricks after then standing 15~16 hours, and the hollow concrete after the demoulding is laid bricks to be carried out Curing with carbon dioxide 7 hours, gas concentration lwevel during curing with carbon dioxide is 45~100%, and controls hollow concrete The moisture content laid bricks is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

5. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 4, its feature exists In：Its method and step is as follows：

Regenerated coarse aggregate：250 parts；

Recycled fine aggregate：120 parts；

Regenerative gel material：600 parts；

Polypropylene fibre：3 parts；Its fibre length is 1.5~200.0mm；

Cement：320 parts；

Bonding agent：52 parts；Bonding agent is epoxy resin；

The stirring of concrete building brick material is sufficiently mixed, then to the water that addition mass fraction in concrete building brick material is 80 parts Stir 20 minutes for the first time；It is subsequently added into second stirring of water that mass fraction is 110 parts and obtains within 30 minutes concrete building brick slurry Body；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks in mould Shaping, the demoulding is made hollow concrete and lays bricks after then standing 15 hours, and the hollow concrete after the demoulding is laid bricks carries out dioxy Change carbon to conserve 7 hours, gas concentration lwevel during curing with carbon dioxide is 45%, and control that hollow concrete lays bricks it is aqueous Rate is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

6. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 4, its feature exists In：Its method and step is as follows：

Regenerated coarse aggregate：300 parts；

Recycled fine aggregate：160 parts；

Regenerative gel material：670 parts；

Polypropylene fibre：5 parts；Its fibre length is 1.5~200.0mm；

Cement：360 parts；

Bonding agent：56 parts；Bonding agent is epoxy resin；

The stirring of concrete building brick material is sufficiently mixed, then to the water that addition mass fraction in concrete building brick material is 90 parts Stir 20~30 minutes for the first time；It is subsequently added into second stirring of water that mass fraction is 120 parts and obtains coagulation in 30~45 minutes Soil is laid bricks slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks in mould Shaping, the demoulding is made hollow concrete and lays bricks after then standing 16 hours, and the hollow concrete after the demoulding is laid bricks carries out dioxy Change carbon to conserve 7 hours, gas concentration lwevel during curing with carbon dioxide is 100%, and control what hollow concrete laid bricks to contain Water rate is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.

7. the preparation method that hollow concrete is laid bricks is prepared according to the utilization discarded concrete described in claim 4, its feature exists In：Its method and step is as follows：

Regenerated coarse aggregate：275 parts；

Recycled fine aggregate：140 parts；

Regenerative gel material：635 parts；

Polypropylene fibre：4 parts；Its fibre length is 1.5~200.0mm；

Cement：340 parts；

Bonding agent：54 parts；Bonding agent is epoxy resin；

The stirring of concrete building brick material is sufficiently mixed, then to the water that addition mass fraction in concrete building brick material is 85 parts Stir 20~30 minutes for the first time；It is subsequently added into second stirring of water that mass fraction is 115 parts and obtains coagulation in 30~45 minutes Soil is laid bricks slurry；The moisture content of concrete building brick slurry is controlled to be less than 30wt%；

D, hollow concrete are laid bricks preparation：The concrete building brick slurry of step C is poured into hollow concrete to lay bricks in mould Shaping, the demoulding is made hollow concrete and lays bricks after then standing 16 hours, and the hollow concrete after the demoulding is laid bricks carries out dioxy Change carbon to conserve 7 hours, gas concentration lwevel during curing with carbon dioxide is 60%, and control that hollow concrete lays bricks it is aqueous Rate is less than 10wt%, finally obtains hollow concrete and lays bricks finished product.