51results about How to "Improve early strength" patented technology

The invention relates to a preparation method of a composite cementing system containing solid waste, and belongs to the technical field of cementing materials. The method comprises the following steps: respectively grinding all cementing materials after dehydrating; mixing all the cementing materials with water accounting for 60-70% of the total water amount, and stirring at a low speed for 60-90 seconds; adding the rest water, and stirring at a medium speed for 90-120s; and adding an alkaline activator, and stirring at a high speed for 60-90s to obtain a composite gel system containing solid waste. After dehydration and grinding, a part of water is firstly added to wet powder, then all water is added to realize uniform dispersion of the powder, and finally an alkaline activator is added to realize excitation of potential active materials in solid waste, so that the chemical activator is prevented from being wrapped or locally enriched by dry materials which are not fully dispersed, and the problem of non-uniform distribution is solved.

The present application relates to solid waste recycling technical field, provide a kind of based on coal-based solid waste's anti-dispersion grouting material and its preparation method and application, the material is made of coal gangue, fly ash, silica ash, cellulose, water reducing agent and alkali activator, wherein, alkali activator is made of deionized water, sodium hydroxide and water glass.The based on coal-based solid waste's anti-dispersion grouting material is prepared according to following steps: after mixing coal gangue, fly ash, silica ash, cellulose and water reducing agent, stirring treatment is carried out, and powder precursor is prepared;Alkali activator is added to the prepared powder precursor, and alkali activator is made of deionized water, sodium hydroxide and water glass, continue to stir to prepare the based on coal-based solid waste's anti-dispersion grouting material.The present application can prepare the anti-dispersion grouting material of excellent fluidity, stability and mechanical property, provides innovative path for the resource of coal-based solid waste, significantly reduces material cost, improves environmental benefits and engineering application value.

This invention relates to the field of refractory materials technology, and more particularly to a cementless magnesia castable and its application method. The castable consists of aggregate, matrix material, and a water-reducing agent; the aggregate is 60-80 parts of magnesia particles; the matrix material is: fine magnesia powder, active α-Al₂O₃ micro powder, sintered corundum powder, silica micro powder, and aluminum-based metal microcapsules. The application method of the cementless magnesia castable is as follows: the water-reducing agent and matrix material are mixed evenly to obtain a premixed matrix material; the aggregate and premixed matrix material are stirred evenly, water is added and wet-mixed to obtain a slurry; the evenly mixed slurry is poured into a mold, vibrated to form the slurry, and then cured. This cementless magnesia castable exhibits certain initial strength, excellent high-temperature performance, excellent resistance to slag erosion and thermal shock, and a long service life, making it widely applicable in tundishes and ladles.

The invention discloses a viscosity modified material for keeping the homogeneity of self-compacting concrete, a preparation method and application. The material comprises the following components in parts by mass: fly ash, slag powder, metakaolin, cellulose ether, limestone powder, zeolite powder, an air entraining agent, a functional component A and a functional component B, wherein the functional component A is prepared by compounding and drying nano silica fume, modified carbon nanotubes subjected to ultrasonic dispersion by sodium dodecyl benzene sulfonate / absolute ethyl alcohol and tungsten disulfide subjected to activation-silanization-polycarboxylic acid modification treatment, and the functional component B is prepared by shearing and uniformly mixing magnesium oxide and a calcium expanding agent at a high speed. The material can improve the viscosity, delay segregation and bleeding and reduce the water use sensitivity under the condition that the yield stress is not obviously improved, meanwhile, the early strength development is promoted, the volume stability is improved, and the durability such as chloride ion permeation resistance is improved, so that the homogeneity and quality consistency of a component in the pouring process and after hardening are guaranteed.

The application relates to an improved swelling soil and a preparation method and application thereof, the improved swelling soil comprising 0.4-0.8% of sugarcane residue fiber, 4-8% of biochar, 4% of cement, 0-1.25% of a pH value regulator and 85.95-91.60% of swelling soil to be improved. The application reinforces the soil structure by the sugarcane residue fiber, and restrains the deformation; the biochar is mixed to improve the water stability and structural stability of the soil; the cement is mixed to make the soil sandy and granulated, thereby improving the strength, compactness and stability of the soil; and the pH value regulator is mixed to adjust the acid-base environment of the soil, which is beneficial to subsequent ecological restoration. The application significantly improves the physical and mechanical properties of the swelling soil, effectively reduces the swelling and shrinking potential of the swelling soil, and can make the swelling soil reach an acid-base environment suitable for plant growth. Meanwhile, the solid waste is recycled, waste is turned into treasure, the preparation process is simple and feasible, and the application has good engineering application value.

The invention belongs to the technical field of concrete, and particularly relates to basalt fiber composite modified sprayed concrete and a preparation method thereof. The basalt fiber composite modified sprayed concrete is prepared from the following raw materials in parts by weight: 420 to 470 parts of cement, 200 to 220 parts of water, 830 to 860 parts of sand, 840 to 880 parts of gravel, 40 to 60 parts of admixture, 15 to 30 parts of modified basalt fiber, 2 to 6 parts of polycarboxylate superplasticizer and 5 to 12 parts of alkali-free accelerator. The modified basalt fiber is added into the sprayed concrete to serve as a reinforcing phase, the strength and impact toughness of the concrete can be improved, and the later strength of the concrete is guaranteed. The cerium trifluoride modified fly ash is added into the admixture, so that the rebound rate can be reduced, and the early strength of the concrete is improved.

This invention discloses a method for preparing an in-situ reinforced single-atom nanoenzyme bactericidal composite material for concrete. The method includes using sodium ferric ethylenediaminetetraacetate (EDTA) as a core precursor, and encapsulating calcium peroxide on its surface through an in-situ reaction to form a composite precursor of calcium peroxide encapsulating EDTA; directional hydrolysis of tetraethyl orthosilicate (TEOS) to form a thin layer of silica on the surface of the composite precursor; subsequent calcination under an inert gas to obtain a three-layer core-shell composite material of single-atom iron nanoenzyme / porous calcium peroxide / porous silica; and finally, grafting with aminosilane to obtain a three-layer core-shell composite material of single-atom iron nanoenzyme / porous calcium peroxide / porous silica with surface-grafted aminosilane. The composite material prepared by this method can achieve continuous and efficient bactericidal action in concrete while increasing nucleation sites, promoting hydration, and effectively improving the early strength and durability of concrete.

The utility model discloses a calcium fluoride sludge building material forming and maintaining integrated device which comprises a feeding mechanism and a forming mechanism, a maintaining mechanism is arranged on the forming mechanism, the feeding mechanism comprises a feeding hopper, an equipment frame, a feeding frame and a second hydraulic telescopic rod, and the feeding hopper is fixedly installed on the equipment frame; the feeding frame is located at the lower end of the feeding hopper and slidably connected with the equipment frame, the second hydraulic telescopic rod is fixedly installed on the feeding hopper and drives the feeding frame, the forming mechanism comprises an upper pressing die, a lower pressing die, a third hydraulic telescopic rod and a fourth hydraulic telescopic rod, and the upper pressing die is slidably connected with the equipment frame through the third hydraulic telescopic rod; the lower pressing die is in sliding connection with the equipment frame through a fourth hydraulic telescopic rod. The device has the advantages of high integration degree, accurate automatic control and good curing effect, and solves the problems of low production efficiency, high blank breakage rate and poor product crack resistance caused by separation of molding and curing in the traditional process.

The application discloses a preparation method of modified nano calcium hydroxide and application of the modified nano calcium hydroxide in prefabricated components and belongs to the technical field of concrete admixture materials. The modified nano calcium hydroxide prepared by the method has an average particle size of 50-90 nm, and after being mixed into cement, the modified nano calcium hydroxide can not only play a role in adjusting alkalinity, but also more importantly, can provide a crystal nucleus effect for cement hydration. Moreover, the nano calcium hydroxide prepared by the method has good stability, can quickly promote early strength of ordinary Portland cement, and has no influence on later strength.

This invention relates to an early-strength agent for hypersulfate cement concrete and its application, belonging to the field of building materials. The early-strength component of the hypersulfate cement comprises, by weight, the following components: 70-80 parts C-S-H / PCE, 15-25 parts sodium hydroxide or sodium carbonate, 5-10 parts sodium lactate, and 10-20 parts lithium carbonate. This invention solves the problem of long setting time of hypersulfate cement and slow early strength development of the prepared concrete, and plays a positive role in promoting the application of hypersulfate cement.

This invention provides a cementitious material based on steel slag solid waste, comprising fly ash, slag, steel slag, and a composite activator, wherein the composite activator includes an alkaline activator, a sulfate activator, nano-hydrated calcium silicate, and polyvinyl butyral. This invention optimizes setting time, improves early and late strength, and enhances volume stability by employing a composite activator to synergistically activate the cementitious activity of fly ash, slag, and steel slag. This cementitious material can replace a portion of cement in concrete, mortar, roadbed materials, etc., achieving efficient utilization of industrial solid waste.

The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.

The present application relates to the technical field of building material recycling, and more particularly to a red mud-based high-performance concrete curb and a preparation method thereof. The curb is prepared from a red mud-based cementitious material, sand, stone, water, a color agent and an additive through a certain preparation method, realizes high-value resource utilization of solid waste such as red mud, improves the performance of the red mud-based concrete curb, is green and environmentally friendly, has a simple preparation process, low cost, high economic benefits, and is suitable for popularization and application.

The application discloses a kind of based on acidification-thermal activation's red mud base salt excitation cementitious material and its preparation method and application, belong to solid waste base cementitious material technical field.The red mud base salt excitation cementitious material provided by the application includes 98~99% red mud-solid waste gypsum complex, 0.2~0.5% water reducing agent and 0.5~1.8% early strength agent by mass fraction;Red mud-solid waste gypsum complex is prepared by thermal activation of acidified red mud and solid waste gypsum with mass ratio of (8~10):1, and the acidified red mud is obtained by neutralizing composite dealkalizer and Bayer red mud;Composite dealkalizer includes 60~70% carboxylic acid component and 30~40% sulfonic acid component.The utilization rate of Bayer red mud is as high as 85% or more, solving the problem of low utilization rate of Bayer red mud in the prior art;At the same time, the obtained cementitious material has good early strength and late strength, and the performance is equivalent to or even better than the existing cement mortar.

This invention discloses an eco-friendly high-strength concrete and its preparation method, belonging to the field of concrete material technology. The raw materials of the concrete include precursor powder, activator, sand and gravel aggregate, and water in a mass ratio of 1:(0.2-0.4):(0.2-0.4):(0.1-0.2). The precursor powder includes industrial by-product precursor powder, agricultural by-product precursor powder, and kitchen waste by-product precursor powder in a mass ratio of 1:(0.5-1.5):(2.5-3.5). The eco-friendly high-strength concrete provided by this invention mainly uses raw materials derived from solid waste, enriching the types of raw materials used in concrete preparation. It requires no high-temperature curing, and its 3-day compressive strength reaches 75.02 MPa, and its 28-day compressive strength reaches 94.88 MPa, exhibiting characteristics of low carbon emissions, environmental friendliness, simple construction, high early strength, and excellent mechanical properties.

The application discloses a lithium residue-based anti-salt corrosion concrete pole and a preparation method thereof. The pole is made of lithium residue-based polymer concrete, and components of the pole include 20-30 parts of dealkalized red mud, 15-25 parts of activated lithium residue, 10-15 parts of slag, 5-8 parts of silica ash, 6-10 parts of magnesium phosphate cement, 12-18 parts of composite alkali activator, 25-35 parts of machine-made sand, 40-50 parts of gravel, 0.4-0.6 parts of polycarboxylic acid water reducer, 0.8-1.2 parts of composite fiber, 2-3 parts of anti-salt corrosion rust inhibitor and 25-35 parts of water. The pole is coated with a silicone-fluorosilicon resin hydrophobic coating on the outer surface. The anti-salt corrosion rust inhibitor is compounded by nano-silicon dioxide, hydrotalcite precursor and triphosphonic acid-based rust inhibitor. The concrete pole is obtained through the processes of pretreatment of red mud and lithium residue, raw material mixing, centrifugal molding, curing and surface treatment, and has excellent anti-salt corrosion performance and mechanical properties.

This invention relates to the field of grouting materials technology, and more particularly to a high-temperature resistant grouting material with anti-dispersion and micro-expansion properties, its preparation method, and its application. By mass, it comprises the following components: 50-90 parts of a compound flocculation-gel system, 20-35 parts of mineral admixtures, 6.55-16.5 parts of additives, 0.5-1.5 parts of added fiber, and water; the mass of water is 0.5-1.0 times the total mass of the compound flocculation-gel system and mineral admixtures. The high-temperature resistant grouting material with anti-dispersion and micro-expansion properties provided by this invention has advantages such as resistance to high-temperature dynamic water dispersion, high strength, micro-expansion, good toughness, and high fluidity. It can be used for the reinforcement of surrounding rock and water plugging operations affected by high-temperature water, and can be applied to scenarios such as the treatment of sudden water inrush in underground engineering affected by high temperatures and the reinforcement of loose strata. It is environmentally friendly and has significant effects, with broad application prospects and extremely high economic benefits.

The invention discloses a preparation method of a composite material for plugging water burst of a mine hole, and relates to the technical field of preparation of mine hole plugging materials, and the preparation method comprises the following steps: preparing raw materials, mixing dry materials, weighing the raw materials in parts by weight, and proportioning water added into the dry mixture; and constructing and maintaining. Water flow scouring can be effectively resisted, and rapid plugging is achieved; meanwhile, a large amount of fly ash and tailing slag industrial solid wastes are utilized, the raw material cost is remarkably reduced, and the method is green and environment-friendly; the overall performance adapts to complex geological conditions, and the plugging agent is particularly suitable for efficient and reliable plugging and filling of water bursting cracks, goaf and subsidence areas in projects such as mines and tunnels.

This invention relates to the field of building materials technology, specifically to a self-leveling mortar based on recycled solid waste materials and its preparation method. The mortar comprises the following raw materials by weight: 100 parts additives, 120-150 parts aggregates, 0.3-0.8 parts auxiliaries, 0.05-0.15 parts cellulose ethers, 0.1-0.3 parts defoamer, and 25-35 parts water. The additives consist of granulated blast furnace slag powder, fly ash microspheres, and additive powder. The aggregates are a mixture of waste glass sand and waste stone powder. This invention solves the problems of complex processes, strong corrosiveness, and inability to dry-produce traditional alkali-activated mortars through dry-powder geopolymer activation technology. The prepared mortar has high fluidity, an ultra-long construction window, high early strength, and excellent durability. This invention achieves high-value-added resource utilization of various solid wastes, with a high solid waste content in the product, significantly reducing production costs and environmental burden, and exhibiting significant economic and environmental benefits.

The invention belongs to the technical field of building materials, and provides an early-strength functional monomer, an early-strength polycarboxylic acid water reducing agent and application of the early-strength functional monomer and the early-strength polycarboxylic acid water reducing agent. The chemical structural formula of the early strength functional monomer is as shown in formula (I). The preparation method of the early-strength polycarboxylate superplasticizer comprises the step of carrying out free radical polymerization reaction on an unsaturated polyether macromonomer, an early-strength functional monomer as shown in the formula (I), unsaturated carboxylic acid and a polysaccharide-based graft copolymer to obtain the early-strength polycarboxylate superplasticizer. The early strength functional monomer provided by the invention is obtained by reacting N-(beta-aminoethyl)-alpha-aminopropyltrimethoxysilane and an acrylic monomer, the raw materials are easy to obtain, the cost is low, the early strength functional monomer can be prepared only by one-step reaction, the synthesis process is simple, the post-treatment is convenient, the reaction condition is mild, and the early strength functional monomer can be applied to the polycarboxylate superplasticizer, so that the early strength functional monomer has a good application prospect. The polycarboxylate superplasticizer can generate a synergistic effect with the unsaturated polyether macromonomer, unsaturated carboxylic acid and the polysaccharide-based graft copolymer, so that the polycarboxylate superplasticizer has excellent early strength effect and binding material environmental adaptability. Formula (I).

The invention discloses a bridge expansion joint low-carbon quick-hardening early-strength repairing material and a construction method thereof, and belongs to the technical field of engineering construction. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint is prepared from the following raw materials in parts by weight: sulphoaluminate cement, Portland cement, calcined shell powder, fly ash and silica fume. Reinforced modified fibers, modified shell powder and a water reducing agent. By treating the shell powder and the reinforced fibers, the setting time and the initial strength maturation period of the concrete can be shortened, so that the construction speed and efficiency are improved, the repairing and reinforcing process of the bridge expansion joint is accelerated, the construction period is shortened, and the engineering cost is reduced. The low-carbon quick-hardening early-strength repairing material for the bridge expansion joint can improve the strength and durability of a repairing layer and effectively guarantee safe operation of a bridge, and meanwhile, quick-hardening construction can shorten the traffic interruption time and guarantee quick and normal traffic of a road.

The invention discloses early-strength high-impermeability low-resilience shotcrete and a construction method thereof, and relates to the technical field of shotcrete. The sprayed concrete is prepared from the following raw materials in parts by mass: 300 to 400 parts of cement, 800 to 850 parts of coarse aggregate, 750 to 850 parts of fine aggregate, 30 to 50 parts of an early strength component, 20 to 30 parts of an alkali-free liquid accelerator, 20 to 30 parts of a micro-expansion component, 10 to 20 parts of a compact component, 5 to 10 parts of a thixotropic component, 5 to 10 parts of a humidity control component, 4 to 8 parts of a water reducing agent and 150 to 160 parts of water. The sprayed concrete provided by the invention is good in workability, excellent in water retention effect and small in slump loss, and can meet the requirements of high-temperature seasons and long-distance transportation; the early strength is high, the 6-hour compressive strength is larger than or equal to 3 MPa, the 24-hour compressive strength is larger than or equal to 10 MPa, and the compressive strength is higher than The rebound amount in the construction process is low (less than or equal to 6%), and the problems of waste of a large amount of building materials, cost increase, environment pollution, construction difficulty and the like are solved; after construction, the internal compactness of the structure is high, the anti-cracking effect is good, and the problem of water leakage is solved.

This invention belongs to the field of building materials technology, and relates to a smart responsive concrete admixture, its preparation method, and its application. The smart responsive concrete admixture includes a main chain and at least one smart responsive side chain and at least one nano-reinforcing side chain bonded to the main chain. The main chain includes polyether structural units and unsaturated carboxylic acid structural units. The smart responsive side chain includes block copolymer temperature-sensitive structural units and calcium ion strongly chelating structural units. Composite nanoparticles are bonded to the nano-reinforcing side chains. From the inside out, the composite nanoparticles consist of a silica core, a soluble calcium source layer, and a silane coupling agent layer. The smart responsive concrete admixture provided by this invention, by introducing smart responsive side chains and nano-reinforcing side chains onto the main chain, can decouple setting time from temperature control, thereby reducing the adiabatic temperature and maximum heat release rate while ensuring early strength.

The application relates to the technical field of concrete pavements, and discloses a reinforced material for concrete pavements and a use method thereof. The reinforced material comprises dry materials and wet materials. The dry materials are as follows: 200-400 parts of white cement clinker, 70-120 parts of modified mineral powder, 300-700 parts of tailing sand, 50-140 parts of lithium slag powder and 5-50 parts of pigment. The wet materials comprise component 1 and component 2. The component 1 is composed of 10-30 parts of nano silicon oxide sol, 10-20 parts of polyaluminum, 10-30 parts of sodium silicate, 5-20 parts of aluminum sulfate, 5-10 parts of urea and 100-300 parts of water. The component 2 is composed of 5-10 parts of glue powder, 5-10 parts of 3-aminopropyltrimethoxysilane and 80-90 parts of water. The dry materials are sprayed on the surface of the concrete by a spraying machine or are uniformly vibrated on the surface of the concrete by a vibrating screen, and the wet materials are sprayed on the surface of the concrete by a sprayer, and then are collected and smoothed, so that the problems of low strength, easy falling and alkali return of the traditional reinforced material are solved.

This invention discloses an all-solid-waste alkali-activated cementitious material and its preparation method, relating to the field of building materials technology. The cementitious material, by weight, comprises the following components: 300-400 parts blast furnace slag, 150-350 parts glass powder, 30-200 parts red brick powder, 40-70 parts desulfurized gypsum, 160-260 parts alkali activator, 10-30 parts sodium sulfate, 30-40 parts sodium tripolyphosphate, 0.4-5 parts silane coupling agent, and 200-400 parts water. This invention utilizes various industrial wastes such as blast furnace slag, glass powder, red brick powder, and desulfurized gypsum to prepare an all-solid-waste alkali-activated cementitious material. It possesses excellent mechanical properties, outstanding durability, and strong environmental adaptability, improving the utilization rate of industrial solid waste, reducing the use of traditional cementitious materials such as cement, lowering resource dependence and production costs, and promoting the low-carbon transformation of building materials.

The present application belongs to floor mudstone processing technical field, and concretely relates to a kind of floor mudstone rapid reinforcement material and reinforcement method.The floor mudstone rapid reinforcement material of the present application includes, by mass fraction:A material:40-60 parts of sulphoaluminate cement, 15-40 parts of Portland cement and 1-2 parts of naphthalene series water reducing agent, also includes initiator, crosslinking agent and oxidation-reduction agent;B material:80-100 parts of gypsum, 10-30 parts of acrylamide and 2-4 parts of aluminate ester coupling agent.The floor mudstone rapid reinforcement material of the present application can harden in situ the site mudification floor, form the floor hardening layer that meets the load bearing condition, reduce the artificial cost and time cost caused by cleaning floor mudification, guarantee the smoothness of traffic, speed up engineering progress, improve engineering benefit and economic benefit.

The application provides a kind of full solid waste roadbed cushion material and preparation method thereof, by breaking and screening coal-fired slag, the first slag, the second slag and the third slag are divided according to different particle size range, then the mixed slurry is obtained by wet grinding after mixing phosphogypsum, steel slag powder and lead-zinc tailings powder according to the preset weight fraction; then the required quicklime, the first slag, the second slag and the third slag are weighed according to the preset weight fraction, and the water reducing agent, the mixed slurry and the water are fully stirred after pre-stirring, to obtain the full solid waste roadbed cushion material. Through the above-mentioned mode, the synergistic effect between the raw materials can be effectively utilized, the formation of hydration products is promoted, and the heavy metal ions are effectively solidified, so that the cheap and difficult-to-handle solid waste material is prepared into the full solid waste roadbed cushion material with good mechanical properties and high stability, which has high economic and environmental benefits.

The application belongs to the field of road engineering and discloses a composite high-performance cement-based grouting material for local disease repair excited by carbamate, which is characterized in that the adding amount of each component is as follows in terms of weight fraction: cement 45-50 parts; water 20-25 parts; composite polyurethane 2.0-2.5 parts; nano-silica ash 0.9-1.0 parts; fine sand 2.3-2.5 parts; water reducing agent 0.2-0.25 parts; and defoaming agent 0.2-0.25 parts. The application also discloses a preparation method. The application has the following main beneficial effects: the hydration reaction and hydration speed are improved, and the formation of early strength is promoted; the strength and interfacial bonding strength after hardening, the toughness and stability of the grouting material are improved, the bubble content in the grouting material is reduced, the brittle fracture of the road surface is effectively reduced, the cement mortar breaking strength is increased, the mixing is carried out at normal temperature, the required energy consumption is low, no waste gas is discharged, the strength after hardening is high, and the adaptability is good.

The application relates to the field of cement material preparation, and particularly discloses a preparation method of an early-strength carbon-reduction light aggregate cement-based material, which comprises the following steps: (1) mixing emulsified asphalt, a silane coupling agent and polyethylene glycol powder to form a coating agent. Then, the coating agent is added to volcanic light aggregate while stirring, and after mixing, recycled concrete powder is added to coat the surface of the aggregate. After solidification, the excess powder is removed through screening to obtain pretreated light aggregate. (2) After the pretreated light aggregate is sprayed with water and moistened, the light aggregate is placed in a sealed container, carbon dioxide is introduced, and heating and insulation are performed, so that the reprocessed light aggregate is obtained. (3) cement, sand fine aggregate, the pretreated light aggregate, an anti-shrinkage agent, glass powder and a water reducing agent are uniformly mixed as raw materials, and then water is added and uniformly stirred, so that the cement-based material is obtained. The cement-based material not only has good fluidity and early strength, but also can prevent mechanical strength deterioration caused by later drying shrinkage.

The application relates to the technical field of building plugging materials, and particularly provides a long-operable-time plugging material, which is prepared from the following raw materials in terms of total weight: 0.02-3% of a retarder, 0.005-2% of a calcium salt, 0.001-1% of a cellulose ether and cement supplementing to 100%. By optimizing the types of the retarder, the calcium salt and the cellulose ether and by stipulating the relative amounts of the retarder, the calcium salt and the cellulose ether, the quick-setting type plugging material has a relatively long retarding time, and the anti-bending performance, the anti-permeation performance, the bonding performance, the heat resistance and the freeze-thaw cycle resistance of the material after solidification are effectively improved.