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A plastering mortar of modified recycled rubber aggregate

A rubber aggregate and plastering mortar technology, which is applied in the field of external wall insulation mortar and plastering mortar, can solve problems such as cracks in the external thermal insulation system, hollowing of the external thermal insulation layer, and large amount of cement, so as to protect the environment, improve toughness, and improve The effect of toughness

Inactive Publication Date: 2014-10-08
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three disadvantages in this external wall thermal insulation plastering mortar: ① If there is no vertical moisture-proof layer near the external wall of the building with water, the external thermal insulation layer will be partially hollowed and peeled off due to the freeze-thaw cycle
② Ordinary quartz sand in the aggregate contains high iron content, which is prone to oxidation and causes cracks and shedding of the external insulation system
③The amount of cement is large, the folding ratio is large, and the surface layer is easy to crack

Method used

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  • A plastering mortar of modified recycled rubber aggregate
  • A plastering mortar of modified recycled rubber aggregate
  • A plastering mortar of modified recycled rubber aggregate

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The invention uses modified regenerated rubber for the external wall thermal insulation mortar to prepare new external wall thermal insulation mortar.

[0016] The preparation method of modified rubber aggregates: Weigh 35~50Kg of rubber aggregates with a particle size of 60 mesh and a silane coupling agent with a mass concentration of 2% of the rubber aggregates, add it to alcohol with a mass concentration of 95%, and make a coupling Coupling agent alcohol solution, fully wet the rubber aggregate particles with the coupling agent alcohol solution, stir evenly, and let it stand until the surface of the rubber aggregate particles is completely dry before use.

[0017] The weight of each component of mortar per ton is: P.O42.5 cement: 310Kg, washed fine sand: 690 Kg, redispersible latex powder (copolymer of vinyl acetate and ethylene): 10~15Kg; hydroxypropyl methyl Cellulose ether: 1.5~2.5Kg; polypropylene fiber with a fiber length of 6mm: 1Kg; modified rubber aggregate: ...

Embodiment 2

[0020] The invention uses modified regenerated rubber for the external wall thermal insulation mortar to prepare new external wall thermal insulation mortar.

[0021] The preparation method of modified rubber aggregates: take a polyvinyl alcohol solution with a mass concentration of 1%, fully soak the rubber aggregates for 1-2 hours, take out the soaked rubber aggregates, and wait until the surface of the rubber aggregate particles is completely dry. use.

[0022] The weight of each component of mortar per ton is: P.O42.5 cement: 380Kg, washed fine sand: 600 Kg, redispersible latex powder (copolymer of vinyl acetate and ethylene): 10~15Kg; hydroxypropyl methyl Cellulose ether: 1.5~2.5Kg; polypropylene fiber with a fiber length of 6mm: 1Kg; modified rubber aggregate: 35~50Kg.

[0023] Step 1: Stir water, redispersible latex powder, hydroxypropyl methyl cellulose ether, polypropylene fibers and rubber aggregates for 30 seconds. Step 2: Add cement and stir for 30 seconds. Step 3...

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Abstract

The invention relates to a modified reclaimed rubber aggregate surface mortar, and specifically relates to a method for applying modified reclaimed rubber aggregate in external-wall thermal-insulation surface mortar. Each ton of the mortar comprises the components of, by weight: 310-400kg of cement, 600-690kg of washed fine sand, 10-15kg of re-dispersible latex powder, 1.5-2.5kg of hydroxypropyl methyl cellulose ether, 1kg of polypropylene fiber, and 35-50 parts of a rubber aggregate. The preparation method is as follows: a silane coupling agent with a mass accounting for 2% of that of the rubber aggregate is weighed and added into 95% ethanol, such that a solution is prepared; rubber particles are sufficiently wetted by using the solution, and are dried in air and preserved for later use; the components are weighed according to the weights; and stirring, settling, and high-speed stirring are carried out, such that the surface mortar is obtained. The surface mortar provided by the invention has important significance in waste utilization and environment protection. According to the invention, mortar cost is reduced, and mortar freeze-thaw strength and toughness are improved.

Description

technical field [0001] The invention relates to a plastering mortar of modified regenerated rubber aggregates, in particular to a mortar using modified regenerated rubber for thermal insulation of external walls, and belongs to the field of mortar preparation for external wall thermal insulation of construction engineering. Background technique [0002] The formula of external wall thermal insulation mortar commonly used in construction projects, the weight of each component of mortar per ton: ordinary Portland cement: 350-400Kg; fine sand: 580-610 Kg; redispersible latex powder: 12-13 Kg; Hydroxypropyl methylcellulose ether: 1.8 ~2.2Kg; polypropylene fiber: 1.3 ~1.5Kg; starch ether: 0.5 ~1Kg. The external wall thermal insulation plastering mortar has three disadvantages: ① If there is no vertical moisture-proof layer near the external wall of the water-filled room of the building, the external thermal insulation layer will be partially hollowed and peeled off due to the fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/22
CPCY02W30/91
Inventor 薛刚王卫华董素芬
Owner INNER MONGOLIA UNIV OF SCI & TECH
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