4581 results about "Silicate Cement" patented technology

The present invention relates to a corrosion resistant water permeable brick, and belongs to the technical field of building materials. The corrosion corrosion resistant water permeable brick comprises 20-25wt% of Portland cement, 1.0-1.2wt% of anhydrite powder, 15.0-20.0wt% of slag pellets, 10-12wt % of cenospheres, 1.5-2.1wt% of admixtures, and the balance of quartz sand. Under the premise that the porosity and water permeability coefficient of the corrosion resistant water permeable brick are significantly higher than that of a water permeable brick, the compressive strength of the corrosion resistant water permeable brick is still higher than that of the conventional water permeable brick, the corrosion resistant water permeable brick has good corrosion resistance, and service life is significantly increased.

The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate such as a zeolite. The agent removes mercury from process streams. The ion exchange to deposit the polyvalent metal on the substrate is preferably performed at a pH above the pH_ZPC.

The invention discloses a preformed material for post-tensioned prestressing pipeline vacuum grouting or mudjacking and a preparation method thereof. The preformed material includes the following components by weight percent: 65 to 95 percent of silicate cement, 0.01 to 3 percent of high-range water-reducing agent, 0 to 1 percent of stabilizing agent, 0.05 to 5 percent of retarding agent, 1 to 20 percent of expanding agent, 0.2 to 2 percent of corrosion inhibitor, 0.01 to 1 percent of air entraining agent and 0 to 30 percent of mineral materials, wherein by uniformly and proportionally mixing the silicate cement, the high-range water-reducing agent, the stabilizing agent, the retarding agent, the expanding agent, the corrosion inhibitor, the air entraining agent and the mineral materials, the post-tensioned prestressing pipeline vacuum grouting or mudjacking preformed material can be obtained. After being uniformly mixed and stirred with water with neutral pH value according to the water cement ratio ranging from 0.24 to 0.32, the preformed material can be used, the obtained grouting material has the advantages of low water cement ratio, favorable flowability, no water bleeding and delamination, and favorable pumpability; meanwhile, the preparation method of the preformed material is simple and the raw material sources of the preformed material are wide.

The invention relates to a cement-matrix sound-absorption material used in road noise barriers and a preparation method thereof; the sound-absorption material is a noise barrier material which can be used in airports, high-speed railways, expressways, urban viaducts, subways and light rails; the components and weight ratios are as follows: 15.4 to 62.3 percent of Portland cement, 0.1 to 15.7 percent of mineral admixture, 18.9 to 79.9 percent of lightweight porous aggregate, 0.013 to 0.078 percent of foaming agents, 0.1 to 0.7 percent of water reducing agent and 0.4 to 2.6 percent of fiber. The sound-absorption material and the preparation method thereof have the advantages of large sound absorption coefficient, high strength, good anti-impact performance, excellent durability, fire resistance, moisture resistance, anti-corrosion and self-clean function; at the same time, the sound-absorption material is wide in sources of raw materials, convenient in preparation and processing, suitable for large-scale production, low in cost, environment-friendly and good in decorativeness.

The invention provides a cement-based composite material for powder-bonding three-dimensional (3D) printing. The material is prepared from the following components in parts by weight: 1 part of cement, 0-5 parts of sand, 0-5 parts of a mineral admixture, 0-0.2 part of an expanding agent, 0-0.2 part of a toughening agent, 0-0.2 part of mineral pigment, 0.1-0.5 part of water, 0-0.25 part of polymer emulsion, 0.001-0.05 part of an additive and 0-0.03 part of fibers, wherein the cement is selected from one or a mixture of more in silicate cements, sulphoaluminate cement, high belite sulphoaluminate cement, aluminate cement, fluoroaluminate cement, aluminosilicate cement, phosphate cement or magnesium oxide cement; the additive is selected from one or a mixture of more in a water reducing agent, an early strength agent or a coagulating regulating agent. After being contacted with water, the cement-based composite material can be hardened, thus not needing a great deal of polymer adhesive; the cement-based composite material is rapid and controllable in hardening speed; the cement-based composite material is small in deformation in the hardening process, thus being suitable for a powder-bonding 3D printing technology. The invention also provides a method for carrying out powder-bonding 3D printing by using the cement-based composite material.

The invention relates to a kind of pair-slurry affusing material prepared with cement as basic raw material. It is comprised of two kinds of dry powdery mixed materials A and B of affusing slurry pair-liquid formed after adding water. Their weight percents are respectively: mixed material A: sulfur aluminate cement 30% - 98.1%, retarder citric acid 0.1% - 0.5%, flocculant polyacrylamide 0% - 0.8%, water-reducing agent FDN 0.6% - 1.5% and inorganic padding pulverized coal ash 0% - 69.1%; mixed material B: Portland cement 20% - 88%, land plaster 6% - 15%, flocculant UWN 0% - 0.7%, accelerator lithium carbonate 0.4% - 1.0%, water-reducing agent FDN 0.5% - 1.3%, calcareousness 2.0% - 5.0% and inorganic padding pulverized coal ash 0% - 70.8%.

The invention discloses a high performance cement-base self-leveling mortar. The mortar is characterized by comprising cement, an auxiliary gel material, fine aggregate, a filling material, an additive, and water; wherein the cement is common silicate cement and sulphoaluminate-silicate cement, the auxiliary gel material comprises mineral slag, fly ash, silica fume, and gypsum, and the ratio of common silicate cement to sulphoaluminate-silicate cement to gypsum is equal to 1:0.2-0.6:0.1-0.4. The mortar has a self-leveling function without vibration, so the surface flatness is very high. The curing speed of the mortar is very quick, and after two hours, the strength of the mortar can meet the requirements of subsequent construction. Moreover the mortar has the advantages of low contraction rate, good volume stability, good surface wear resistance, and high compression strength.

The present invention discloses a running sand layer and sandy gravel layer dynamic-water double-liquid high-pressure slurry-injecting water-shutoff construction method which comprises the following construction steps: drilling a hole, flushing the hole, executing double-liquid high-pressure slurry-injecting operation and sealing the hole. The running sand layer and sandy gravel layer slurry-injecting liquid adopts an ordinary portland cement (P.O.42.5) and 40''Be sodium silicate as material for preparing the slurry, according to the weight proportion of water: cement, namely the cement slurry is prepared with the water cement ratio for 0.5-1.2:1. Then the slurry-injecting liquid is prepared with the volume ratio of cement slurry: sodium silicate for 1:0.08-0.15. The sodium silicate is taken as additive for regulating the initial setting time of the slurry-injecting liquid. The cement slurry can also be doped with fly-ash with cement consumption (weight proportion) for 10%-15%. The invention executes water-insulating construction aiming at the characteristics of large pressure of the underground dynamic water and high flowing velocity in the running sand layer and sandy gravel layer, and can obtain the maximal application sphere and optimum water-shutoff effect.

The invention discloses a silicate cement grinding aid and a preparation method thereof. The silicate cement grinding aid is prepared from the following main raw materials by weight: 3-6 parts of sodium hexametaphosphate, 2-5 parts of aluminum sulfate, 5-8 parts of tetra sodium salt of amino trimethylene phosphonic acid (ATMP.Na4), 4-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 38-45 parts of polymeric alkylol amine, 34-42 parts of triisopropanolamine, 8-12 parts of waste engine oil, 2-5 parts of sodium alpha-olefin sulfonate, 10-16 parts of sorbitol, 15-20 parts of diethylene glycol, 8-13 parts of polypropylene wax, 6-10 parts of oxidized polyethlene wax, 4-8 parts of lignite wax, 20-30 parts of odium thiosulfate, 12-18 parts of sodium thiosulfate and 15-20 parts of quicklime powder. The prepared silicate cement grinding aid has the advantages that the quality is stable, the effect is remarkable, the adding amount is small, the use is simple, and the adding is more convenient and reliable to control.

The invention discloses porous phosphorus removing ceramic granules with a function of slowly releasing an alkali and a preparation method thereof. The prepared ceramic granules are an environmental material for efficiently removing phosphorus from municipal sewage and industrial wastewater. Based on the basic chemical properties of the phosphorus in water and a phosphorus removing mechanism by chemical absorption, the preparation method of the ceramic granules comprises the following steps of: mixing 20 to 40 mass percent of ordinary portland cement (42.5 level), 10 to 20 mass percent of bentonite, 10 to 20 mass percent of fly ash, 10 to 15 mass percent of calcium oxide, 15 to 25 mass percent of nitrocellulose, 14 to 30 mass percent of xonotlite fiber particle and 0.1 to 0.5 mass percent of pore-creating agent; adding water for stirring the mixture according to a water-solid ratio of 0.35 to 0.45; granulating the mixture into granules with required grain sizes; and after the granules are foamed and solidified, curing the granules by using high-temperature steam to obtain the ceramic granules. The method has the advantages of simple preparation process, readily available raw materials, low cost and wide application prospect in the field of the removing of the phosphorus in water bodies. The prepared ceramic granules have the characteristics of capacity of slowly releasing the alkalis, silicic and calcareous textures, porosity, capacity of continuously and efficiently absorbing and removing the phosphorus and suitability for phosphorus removing systems of the municipal sewage and the industrial wastewater.

The invention provides a ground self-leveling mortar comprising gelatinization materials, fine sand and an additive. The gelatinization materials comprise sulphate aluminium cement, silicate cement and plaster. The self-leveling mortar comprises the components by weight percentage of: 30% of sulphate aluminium cement, 12.6% of silicate cement, 46.15% of fine sand, and 4.75% of additive. The plaster is a natural hard plaster or reverse 8-type hymihydrate plaster. The additive comprises: redisperse emulsion powder, early strength agent, a retarder, a super-plasticizer, a defoamer and a stabilizer. The ground self-leveling mortar uses the sulphate aluminium cement to replace aluminate cement to be combined with the silicate cement and the plaster, so as to solve the problems that the aluminate cement is high in price and difficult to purchase, and overcome the contradiction between shrinkage and expansion, thus avoiding the self-leveling floor hollowing and cracking and ensuring the bonding strength, folding and compressingresistance strength as well as wearing resistance to reach the optimized level.

The invention relates to cement-based self-leveling mortar, which is prepared from the following raw materials in percentage by weight: 35 to 40 percent of No.425 ordinary portland cement, 10 to 15 percent of No.42.5 rapid hardening sulphoaluminate cement, 15 to 18 percent of heavy calcium carbonate, 0.45 to 1 percent of high polymer, 0.15 to 0.3 percent of water reducing agent, 0.15 to 0.3 percent of early strength agent, 0.15 to 0.3 percent of retarder, 0.15 to 0.3 percent of thickener and the balance of fine river sand with the fineness modulus of 1.2 to 1.5. Compared with other traditional cement self-leveling mortar, the self-leveling mortar has the characteristics of higher fluidity, higher leveling property, high early strength and the like.

The invention discloses an inorganic powder infiltration crystalline water-proof material which consists of 45 to 55 portions of 600#silicate cement, 20 to 25 portions of ultra-thin quartz sands, 25 to 30 portions of master batches, 1 to 5 portions of effective retarding water reducers and 1 to 5 portions of macromolecular tougheners and is manufactured by feeding the materials into a stirrer to be uniformly stirred. The inorganic powder infiltration crystalline water-proof material is characterized by having the advantages of secondary anti-permeability capacity, durable water-proof performance, high sticking performance, acid resistance and alkali matter resistance; besides, the inorganic powder infiltration crystalline water-proof material have the capacity of growing an insoluble crystal in the pores and the micro cracks of a concrete substrate to plug the pores and the micro cracks, thereby improving the anti-permeability capacity of the concrete and achieving the goals of anti-permeability and anti-leakage. The inorganic powder infiltration crystalline water-proof material can be broadly applied to the water-proof projects of railways, roads, ports and docks, culverts, dams and pools as well as large underground projects.

The invention belongs to the field of water delivery engineering and relates to a green environmentally-friendly powder reinforced concrete water delivery pipe. The green environmentally-friendly powder reinforced concrete water delivery pipe is manufactured by uniform distribution of concrete on a reinforcement mat. The concrete is prepared from 450 to 500 weight parts of ordinary portland cement or low-alkaline portland cement having the average grain diameter of 30 to 60 microns, 90 to 130 weight parts of silica fume having the average grain diameter of 0.18 microns and SiO2 content greater than or equal to 85%, 100 to 130 weight parts of I-grade coal ash having the average grain diameter of 10 to 20 microns, 130 to 160 weight parts of more than S95 grade of slag powder having the average grain diameter of 10 to 30 microns, 520 to 600 weight parts of quartz sand having the grain diameter of 0.16 to 1.63 millimeters, 800 to 880 weight parts of crushed stone having the grain diameter of 5 to 14 millimeters, 12 to 20 weight parts of a composite high-efficiency water reducer having a water-reducing rate more than 30%, 7 to 12 weight parts of a corrosion inhibitor, 45 to 50 weight parts of a high-efficiency expanding agent, 130 to 150 weight parts of water, 0.8 to 1.2 weight parts of polypropylene fibers, and 80 to 160 weight parts of copper-coated steel fibers having the diameter of 0.18 to 0.25 millimeters and the length of 10 to 15 millimeters. The reinforcement mat is manufactured by weaving hard-drawn wires having the diameter of 4.0 to 6.0 millimeters as reinforcements and cold-rolled ribbed bars having the diameter of 5.0 to 10.0 millimeters as hoop reinforcements.

The invention discloses an antiseize slag spraying material for sulfur removal hot iron tank, which comprises the following steps: allocating mass percent with 70-90% carbonaceous fireproof material waste brick, 4-8% alumina cement, 1-3% silicate cement, 1-3% silicon micronized quartz powder, 2-13% clay, 0-5% soil carbite, 0. 5-3% inorganic staple fiber and 0. 1-0. 5% phosphate; getting the product. This invention possesses wide raw material source, low cost and good using effect.

The invention discloses active belite-sulphate aluminum cement clinker, which comprises the following mineral compositions in weight percentage: 25-30 percent of beta-type C2S, 25-30 percent of a-type C2S, 28-40 percent of C4A3S`, 4-12 percent of C4AF and 4-8 percent of amorphous-phase substance. The control of different forms and the change of number of the C2S in the clinker are controlled mainly through special setting on clinker ingredient rate values. The invention also discloses a preparation method for the active belite-sulphate aluminum cement clinker. Compared with traditional common silicate cement clinker, the active belite-sulphate aluminum cement clinker has the advantages that more industrial solid waste residues are used in raw materials by the active belite-sulphate aluminum cement clinker, and thereby, the production cost is reduced, the use proportion of limestone is greatly reduced, and the carbon dioxide emission in clinker production is obviously reduced. Under the condition that the water demand and the setting time of the obtained clinker are basically the same as that of the common silicate cement clinker, the strength of the obtained clinker is superior to that of the common silicate cement clinker.

The invention discloses a large mixing amount coal gangue composite cement comprising coal gangue, silicate cement clinker aggregate, exciting agent, gypsum coagulation regulating agent, mineral admixture by right weight portion through a finite process, wherein the content of coal gangue is 20-80% wt. The composite cement according to the invention can be used for making various concrete structure, in particular mass concrete structure.

The invention provides a non-burned porcelain granule which adopts fly ash generated by waste incineration as the main raw material and a manufacturing method thereof; the non-burned porcelain granule comprises a spherical inner core 1 and a shell 2 attached outside; wherein, the components (dry weight) of the inner core 1 are as follows: 50 to 70 parts of fly ash generated by waste incineration, 25 to 50 parts of portland cement, 0 to 15 parts of coal ash and 0.2 to 0.5 part of heavy metal stabilized agent; the shell 2 adopts ordinary portland cement or lime. The method includes the following steps: firstly, the agent stabilization treatment is carried out on the fly ash generated by waste incineration; then the fly ash is mixed with the portland cement and coal ash to be granulated, thus manufacturing the inner core 1; finally, the inner core 1 is coated on the shell 2 in a pan granulator for natural curing. The method adopts the fly ash which is the dangerous waste as the raw material of the porcelain granule for resource utilization, realizes the harmlessness of the whole treatment process and has the advantages of economy, environmental protection and less investment of one-off equipment.

The invention relates to wave absorption concrete and a preparation method thereof. High-iron ground steel slag lightweight high-toughness wave absorption concrete is characterized in that the concrete is prepared from powder, aggregate and admixture, wherein the powder consists of silicate cement, fly ash and high-iron ground steel slag; the aggregate is ceramic sand; the admixture consists of efficient water reducing agent, basalt fiber and water; and the concrete comprises the following raw materials in a ratio (kg/m<3>): 110 to 300 kg/m<3> of silicate cement, 80 to 120 kg/m<3> of fly ash, 70 to 140 kg/m<3> of high-iron ground steel slag, 600 to 1,500 kg/m<3> of ceramic sand, 3.0 to 4.5 kg/m<3> of efficient water reducing agent, 30 to 50 kg/m<3> of basalt fiber and 150 to 180 kg/m<3> of water. The wave absorption concrete has the characteristics of energy conservation, environmental protection and low price.

The invention relates to dry powder mortar of mine tailings, which comprises the following components in portion by weight: 40 to 60 portions of copper tailing sand or iron tailing sand, 20 to 30 portions of river sand, 10 to 30 portions of low-clinker silicate cement, and 0.5 to 1.5 portions of water-retaining thickening agent. The dry powder mortar is suitable for masonry, plastering, ground and common waterproof engineering. By using the low-clinker cement to replace the prior common silicate cement and using the tailing sand to partially replace the river sand, the dry powder mortar reduces the discharge of carbon dioxide and the consumption of sand river resources, realizes the resource utilization of solid wastes such as mine refuses, steel slag, tailings and the like, and protects the ecological environment.

The invention discloses an anti-impact and wear-resistant mortar, belonging to the field of a repairing material in water-power engineering. The difficulty that the constructions in the conventional water-power engineering is difficult to repair after being damaged by rushing and abrading with water with sands and stones can be solved. The anti-impact and wear-resistant mortar comprises the following components in parts by weight: 39-48 parts of silicate cement, 45-50 parts of graded hard fine aggregate, 0.05-0.25 parts of water reducing agent, 0.05-0.3 parts of de-foaming agent and 0.05-1.5 parts of nanometer material. The anti-impact and wear-resistant mortar provided by the invention has the advantages of high anti-impact and wear-resistant strength, low elasticity modulus and good anti-crack property, and is a finished product material with a higher application value for repairing through irrigation works.

The invention belongs to the technical field of a building material used in road engineering, and specifically relates to drainage asphalt mixture for an ultra-thin wearing layer. The mixture comprises aggregated material, stuffing, high-performance asphalt and warm mixing additive; the maximal nominal size of the mixture is 6.7mm; the thickness of a pavement layer is 10-20mm; the aggregated material is basalt or dolerite; the used stuffing is mixture of limestone powder and common silicate cement, and the used high-performance asphalt is prepared from general modified asphalt by adding waste tire rubber powder which is 20-28% of weight of the asphalt and modifying. An ultra-thin finishing coat and low-temperature construction are realized by the asphalt mixture by adding the warm mixing additive; the ultra-thin wearing layer has the advantages of low construction cost, convenience in construction and the like, and is suitable for building of an asphalt concrete pavement and function-improving works of the pavement.

The invention relates to an aerated concrete regenerative building block produced by using garbage clinkers and a manufacturing method thereof. The manufacturing method comprises the following steps of: adopting the garbage clinkers, flying ash, river sand, silicate cement, lime, calcium sulfate, poly-carboxylate water reducing agent, aluminum powder, glcditsia sinensis powder, borax, sodium chloride and water as raw materials; stirring the raw materials into a paste by using a double-shaft hybrid stirring machine, and pouring the paste into a die; performing delaying curing for gas development and solidification; forming the paste through machinery cutting; putting the formed garbage clinker aerated concrete regenerative building block into a still kettle to perform steam curing; and raising the temperature to heat up the building block for 2 to 3 hours first, heating the building block for 5 to 8 hours at a constant temperature of between 95 and 100 DEG C, and then naturally cooling the building block for 1 to 2 hours to obtain a garbage clinker aerated concrete regenerative building block product. The product has the advantages and effects of light weight, high strength, no pollution, low cost and good benefit, and accords with a national prescription for saving energy, reducing emissions, developing low-carbon economy and protecting the environment.