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115results about How to "Improve anti-crack and anti-seepage performance" patented technology

Building exterior wall external thermal insulation system waterproof and drainage construction method

The invention discloses a building exterior wall external thermal insulation system waterproof and drainage construction method. The building exterior wall external thermal insulation system waterproof and drainage construction method includes following steps: processing a wall foundation layer; leveling the wall foundation layer; arranging a drainage channel; pasting a thermal insulation board; smearing a polymer anti-crack mortar protection layer; processing details of waterproof nodes; performing external wall surface decoration and a water pouring experiment. The building exterior wall external thermal insulation system waterproof and drainage construction method overcomes the problems that an external wall crazes, leaks and the like, caused by water pressure generated due to water which enters a thermal insulation layer of a building exterior wall external thermal insulation system and can not be discharged in time. The building exterior wall external thermal insulation system waterproof and drainage construction method is applied into a plurality of projects, and thereby effectively improves cracking resistance and seepage prevention performance of the building exterior wall external thermal insulation system, prevents cracks and leakage of the external wall, eliminates potential safety hazards caused by the accident that the thermal insulation board falls off a high position, reduces user complaint and claim rate, reduces maintenance cost, reduces engineering use cost, and obtains good economic benefits and social benefits.
Owner:ZHONGQI JIAOJIAN GRP

Polycarboxylic acid water reducing agent and preparation method thereof

The invention relates to a polycarboxylic acid water reducing agent and a preparation method thereof, belonging to the technical field of concrete water reducing agent. The polycarboxylic acid water reducing agent comprises the following components in percentage by weight: 30-50 of polycarboxylic acid, 15-30 of sodium nitrite as a corrosion resisting agent, 0.1-2.0 of sodium dodecyl benzene sulfonate as an air-entraining agent, 5-15 of sodium stearate as a waterproofing agent, 0.1-0.5 of polyether glycol as a defoaming agent and 15-40 of aluminum sulfate as a volume stabilizer. The preparation method comprises the following steps: adding the polycarboxylic acid into a reaction kettle, controlling the temperature at 45-80 DEG C, and while stirring, adding the sodium nitrite as the corrosion resisting agent, the sodium dodecyl benzene sulfonate as the air-entraining agent, the sodium stearate as the waterproofing agent, the polyether glycol as the defoaming agent and the aluminum sulfate as the volume stabilizer to carry out a synthetic reaction, and isothermally reacting for 1.5-2.5 hours to obtain the polycarboxylic acid water reducing agent. The water reducing agent of the invention has high water reducing rate, high concrete durability, good compatibility, good adaptivity and long service life, and the process of the invention has the advantages of simple flow, short reaction time, convenient industrial production, safety, cleanness and the like.
Owner:天津市飞龙砼外加剂有限公司

C200 strength-grade concrete for formed steel concrete composite structure

The invention discloses a C200 strength-grade concrete for a formed steel concrete composite structure, which is composed of 473 parts of cement, 846 parts of fine aggregate, 1054 parts of coarse aggregate, 98.8 parts of water, 19.6 parts of concrete superplasticizer, 1.1 parts of defoaming agent, 84 parts of silicon powder, 123 parts of expanding agent, 7.2 parts of activator and 40 parts of expanding agent. The preparation method comprises the following steps: blending the concrete superplasticizer and activator into weighed water to obtain a mixture, sequentially adding the fine aggregate and 1/3 of the mixture into a stirrer according to parts by weight, and stirring; adding the coarse aggregate and 1/3 of the mixture, and stirring; adding the cement, expanding agent, silicon powder and fly ash, and stirring; and adding the defoaming agent and the rest of mixture, stirring and discharging. The concrete can obviously improve the bonding property between the formed steel and the concrete in a natural state, effectively displays the respective mechanical properties and the synergic working performance of the steel and concrete, greatly enhances the loading capacity, service performance and durability of the structural member, and has high volume stability and economical efficiency.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

High-performance cement expansive agent and production method thereof

InactiveCN101538133AMitigation of harmful cracksGood compensation for shrinkageAluminateEther
The invention relates to a high-performance cement expansive agent and a production method thereof. Aluminate expansive chamotte calcined at high temperature in a rotary kiln, other aluminum chamotte, anhydrite, desulfurized gypsum and polyalcohol ether (a reducing component) are mixed together according to a certain proportion to form the high-performance cement expansive agent. The production method comprises the following steps: firstly adding the blocky aluminate expansive chamotte into a vertical mill so as to pulverize the chamotte to a certain specific surface area; then adding the anhydrite, the desulfurized gypsum and the other aluminum chamotte together into a ball mill so as to pulverize the mixture to a certain specific surface area; and during the pulverizing in the ball mill, spraying the reducing component into the ball mill after atomizing the reducing component through a special device so as to evenly mix the components and obtain the finished product. Through the full use of the difference between the grinding performances of different mineral materials, the method compounds the recipe and carries out the process parameter control so as to realize the reasonable gradation of the particles. The high-performance cement expansive agent can reduce or avoid the problems that: a concrete structure produces harmful cracks due to early contraction, dry shrinkage and cold shrinkage, thereby bringing about structural leakage. The high-performance cement expansive agent can be used for continuous production, and has high compensation and contracting performance and convenient use.
Owner:浙江合力海科新材料股份有限公司

Assembly type heat preservation plate

InactiveCN109208771AExcellent sound insulationKeep the temperature constantHeat proofingSound proofingRebarGypsum
The invention discloses an assembly type heat preservation plate, and aims to solve the problem that the heat preservation performance of an existing heat preservation plate needs to be improved. Theassembly type heat preservation plate comprises a base plate, a supporting layer and a heat preservation layer. The base plate, the supporting layer, and the heat preservation layer are sequentially and fixedly connected into a whole from bottom to top. The preparation process of the supporting layer comprises the following steps: (1) a plurality of rectangular small frames are formed among reinforced steel bars by taking steel bars as keels and constructing a supporting framework on the base plate; (2) a sound absorption felt is filled in the rectangular small frames, and a supporting layer is formed. According to the invention, the ardealite is used as a raw material to prepare the base plate. Meanwhile, the supporting layer and the heat preservation layer are structurally improved, so that the prepared heat preservation plate has excellent performances such as light weight, high strength, water resistance, moisture resistance, stretching resistance and the like. On the basis of thestructural improvement of the heat preservation plate, the heat preservation plate disclosed by the invention is light in weight, high in strength, small in heat conduction coefficient, good in fireproof and waterproof effects and the like. Meanwhile, the ardealite is used as the raw material, so that the resource utilization of the ardealite is realized.
Owner:西南科技大学城市学院

Impermeable concrete and preparation method thereof

The invention discloses impermeable concrete and a preparation method thereof, and relates to the technical field of concrete. According to the technical key points, the impermeable concrete comprisesthe following components in parts by weight: 350 to 400 parts of cement, 120 to 150 parts of water, 600 to 650 parts of sand, 900 to 1000 parts of fine stone, 60 to 80 parts of fly ash, 80 to 100 parts of mineral powder, 3 to 5 parts of a water reducing agent, 60 to 195 parts of modified waste rubber granules, and 9 to 30 parts of PVA fiber; the preparation method of the modified waste rubber granules comprises the following steps: adding the waste rubber granules into a 1 mol/L NaOH solution according to a weight ratio of 1:4, soaking the rubber granules for 2-3 h, cleaning the waste rubbergranules with water until the pH value is equal to 8, drying the rubber granules, soaking the rubber granules in absolute ethyl alcohol with a silane coupling agent for 2-3 h, cleaning the rubber granules, and drying the rubber granules to obtain the modified waste rubber granules. The waste rubber granules doped into the impermeable concrete account for 30% of the fine aggregate to the maximum extent, and the impermeable concrete has the advantages that the waste rubber granules are fully utilized and the mechanical property of the concrete is high.
Owner:昊丰赢(上海)新材料科技有限公司

GHB (Glazed Hollow Bead) heat preservation and heat insulation building wall body and construction technology

The invention discloses to a GHB (Glazed Hollow Bead) heat preservation and heat insulation building wall body and construction technology, and relates to the field of building energy conservation. The GHB heat preservation and heat insulation building wall body and construction technology comprises the GHB heat preservation and heat insulation building wall body and a construction technology of the GHB heat preservation and heat insulation building wall body, wherein the GHB heat preservation and heat insulation building wall body is formed by sequentially manufacturing a coarse scraping base layer, a GHB heat preservation and heat insulation layer, a seepage-proofing and anti-crack flexible plastering layer and a decorating layer on a building wall body by adopting a GHB heat preservation and heat insulation material; the GHB heat preservation and heat insulation layer is formed by GHB heat preservation and heat insulation slurry which is prepared by GHB heat preservation and heat insulation dry powder, and the seepage-proofing and anti-crack flexible plastering layer is formed by seepage-proofing and anti-crack flexible slurry which is prepared by seepage-proofing and anti-crack flexible mortar and a reinforcing net. The GHB heat preservation and heat insulation building wall body disclosed by the invention has the advantages that the heat conduction coefficient is low, the heat preservation and heat insulation effect is good, the seepage-proofing and anti-crack performance is good, safety and fire prevention can be obtained, the strength is high, environmental protection is realized, and good energy saving and consumption reducing effects of a building structure is realized; the GHB heat preservation and heat insulation building wall body and construction technology can be widely promoted and applied in the field of heat preservation and heat insulation, energy saving and consumption reducing, and safety and fire prevention of a building.
Owner:HUBEI TIANQUAN NEW BUILDING MATERIALS

Crack-resistant anti-seepage concrete and preparation method thereof

The invention relates to crack-resistant anti-seepage concrete and a preparation method thereof, and mainly solves the problem that the concrete is easy to crack and leak. The crack-resistant anti-seepage concrete comprises 280 to 290 parts of cement, 105 to 115 parts of fly ash, 790 to 800 parts of sand, 1050 to 1060 parts of crushed stone, 1 to 10 parts of a water reducing agent, 2 to 7 parts ofwhite sugar, 20 to 30 parts of a fiber expansion agent, 20 to 30 parts of a crack-resistant anti-seepage agent, 3 to 10 parts of a water repellent, 95 to 105 parts of coal gangue, 73 to 83 parts of metal silicon powder, 40 to 50 parts of iron powder, 65 to 75 parts of copper ore tailings, 10-20 parts of a reactant and 148 to 158 parts of water. The fly ash, the sand, the crushed stone and the copper mine tailings are selected as main raw materials, the production cost of the raw materials is reduced, the anti-wear and anti-erosion ability of the concrete is reduced, the durability of the concrete is improved, and the compactness of the concrete is improved. The crack-resistant anti-seepage concrete has better frost resistance and seepage resistance, and the unique crack-resistant anti-seepage agent is added to the concrete to greatly improve the crack resistance and seepage resistance of the concrete.
Owner:WENZHOU INNOVATION NEW MATERIAL CO LTD

Method for compensation and anti-permeation of temperature difference cracks of ground concrete high-temperature pool

The invention discloses a method for compensation and anti-permeation of temperature difference cracks of a ground concrete high-temperature pool. The method comprises the following steps of: reliably sealing the place having the crack permeation firstly, and then (1) preparing self-healing mortar and using the self-healing mortar to plaster the surface of the pool; and (2) preparing temperature difference compensation mortar and using the temperature difference compensation mortar to plaster the surface of the pool. The self-healing mortar comprises the following compositions by weight portion: 100 portions of ordinary Portland cement, 200 to 400 portions of medium coarse sand, 6 to 10 portions of D-type adjusting agent, 0.1 to 1 portion of water reducing agent, 1 to 3 portions of silicon ash and 30 to 40 portions of water. The temperature difference compensation mortar comprises the following compositions by weight portion: 100 portions of ordinary Portland cement, 200 to 400 portions of medium coarse sand, 2 to 4 portions of F type adjusting agent, 0.1 to 0.2 portion of air-entraining agent and 30 to 50 portions of water. The method reduces the pool wall temperature stress, effectively controls temperature difference cracks and reduces the maintenance cost.
Owner:BAOSHAN IRON & STEEL CO LTD
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