Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof

A gypsum-based and mortar technology, which is applied in the field of building materials and construction, can solve the problems of unusable desulfurization gypsum and phosphogypsum, loss of fluidity of sealing slurry, and high requirements for construction equipment, and achieve fast and efficient construction, good construction performance, The effect of long operation time

Active Publication Date: 2014-02-05
SHANGHAI LIVABLE BUILDING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this patented technology, there's an advantage that makes concrete stronger without adding more expensive chemical agents or requiring longer-lasting curative processes compared to previous methods like calcium sulfate hydration method (CSA). Additionally, due to their high strength properties, these compositions have potential applications beyond building foundations such as roadways, tunnels, dams, pipes, etc., making them ideal substitutes for traditional ways of reinforcing structures.

Problems solved by technology

Technological Problem addressed in this patents relates to improves the performance of existing valveless rooms without requiring expensive maintenance and replacements. Current methods involve adding calcium nitrogen hydride to replace traditional silicate bricks, leading to increased greenhouse gases emissions and negative impact upon indoor environments. Additionally, current disposable siding products have limitations like being too rigorous for certain applications where safety concerns exist. There is thus a technical solution called "wetting sealed curtain," developed specifically aiming towards improved efficiency, ease of manufacturing, reduced material usage, lower costs, better moisture management capabilities, and enhanced insulating properties.

Method used

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  • Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof
  • Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof
  • Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]

[0048] Preparation:

[0049] (1) The desulfurized gypsum is pre-dried at 40-60°C to obtain dihydrate desulfurized gypsum, which is sieved with 200 meshes and set aside;

[0050] (2) Weigh various raw materials according to the formula, and add aggregate (quartz sand, expanded perlite), waste gypsum (dihydrate desulfurized gypsum powder), active admixture (S95 slag powder), and water reducer to the mixer in sequence (naphthalene-based high-efficiency water reducer), activator (calcium hydroxide), binder (terpolymerized rubber powder of vinyl acetate, acrylate and higher fatty acid vinyl ester), plastic retainer (hydroxyethyl cellulose ether) , water repellent (calcium stearate), starch ether, fully stirred evenly, and packaged to form a product.

[0051] The construction method is as follows:

[0052] (1) Weigh the sealing material as required, and add water to the gypsum-based sealing material according to the proportioning requirements, and the amount of water a...

Embodiment 2

[0058]

[0059] Preparation:

[0060] (1) After the desulfurized gypsum is pre-dried at 40-60°C, it is calcined at 140-180°C to obtain hemihydrate desulfurized gypsum, which is ground and passed through a 200-mesh sieve for use;

[0061] (2) Weigh various raw materials according to the formula, add aggregate (quartz sand, pottery sand), waste gypsum (semi-hydrated gypsum powder), active admixture (high calcium fly ash), water reducing Agent (naphthalene-based high-efficiency water reducer), activator (calcium chloride), coagulation regulator (citric acid), binder (polyvinyl alcohol), air-entraining agent (sodium lauryl sulfate), plastic retainer (methyl cellulose, bentonite), water repellent (organic silicon powder), modified starch ether, fully stirred evenly, and packaged to form a product.

[0062] The construction method is as follows:

[0063] (1) Weigh the sealing material as required, and add water to the gypsum-based sealing material according to the proportioning...

Embodiment 3

[0070]

[0071]

[0072] Preparation:

[0073] (1) After the desulfurized gypsum is pre-dried at 40-60°C, it is calcined at 140-180°C to obtain hemihydrate desulfurized gypsum, which is ground and passed through a 200-mesh sieve for use;

[0074] (2) Weigh various raw materials according to the formula, and add aggregate (quartz sand), powder filler (talc powder), waste gypsum (semi-hydrated gypsum), active admixture (slag powder, fly ash) to the mixer in sequence ), water reducer (sodium lignosulfonate), activator (P.O42.5 ordinary Portland cement, sodium metasilicate), coagulation regulator (sodium polyphosphate), binder (ethylene and chlorine Ethylene and vinyl laurate ternary copolymer rubber powder), air-entraining agent (triterpene saponins), plastic retaining agent (hydroxyethyl cellulose ether, diatomaceous earth), water-repellent agent (calcium stearate), starch ether , fully stirred evenly, and packaged to form a product.

[0075] The construction method is a...

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Abstract

The invention relates to gypsum-based door and window seam filling and sealing mortar as well as a preparation method and an application thereof. The gypsum-based door and window seam filling and sealing mortar is prepared from the following components in parts by weight: 100 parts of waste gypsum, 20-200 parts of active admixture, 0.01-10 parts of water reducing agent, 0.1-50 parts of excitant, 0-10 parts of thickening time control agent, 0-30 parts of binding agent, 0-10 parts of air entraining agent, 0.01-30 parts of plastic retaining agent, 0.01-10 parts of water repellent, 0-5 parts of starch ether, 0-150 parts of powder filler and 0-300 parts of aggregate. Compared with the prior art, the mortar has the advantages of simpleness and convenience in construction, good filling capability, high adhesion capability, good durability, low cost and the like; as the mortar takes chemical gypsum such as desulfurization gypsum and phosphogypsum as main binding materials, a novel application is provided for resource utilization of waste gypsum, not only is material property improved, but also the cost is lowered, and the purposes of sewage treatment and emission reduction are achieved.

Description

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Claims

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Application Information

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Owner SHANGHAI LIVABLE BUILDING SCI & TECH CO LTD
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