Polypropylene fiber dry-mixed mortar for construction of outer wall

Abstract

The invention discloses polypropylene fiber dry-mixed mortar for the construction of an outer wall. The dry-mixed mortar comprises 0.8 to 1.2 weight parts of cement, 5 to 6 weight parts of fine sand, 0.4 to 0.8 weight part of addition, 0.1 to 0.3 weight part of admixture, 1 to 1.5 weight parts of water; and 0.8 to 1 kilogram of polypropylene fiber is doped into per cubic meter of the dry-mixed mortar, and the mixture is stirred for 2 to 4 minutes. By the polypropylene fiber dry-mixed mortar for the construction of the outer wall, the integrity, the flexibility, the continuity and the durability can be improved substantially. The polypropylene fiber dry-mixed mortar has high comprehensive performance such as crack resistance, permeability resistance, shock resistance, seismic resistance, freezing resistance, erosion and abrasion resistance, burst resistance, workability and water retention. The polypropylene fiber dry-mixed mortar is easily, conveniently and quickly constructed, is easy to operate and is suitable for plastering construction of all the outer walls.

Description

technical field

[0001] The invention relates to a polypropylene fiber dry powder mortar for exterior wall construction, and belongs to the technical field of building materials for exterior wall construction. Background technique

[0002] At present, with the continuation of the use time, the plaster layer of the external wall of the building usually has a series of quality problems such as emptying, swelling, seepage, leakage, and cracking. Especially as the outer wall of the enclosure structure, when lightweight walls such as concrete hollow blocks and aerated concrete are mostly used, due to factors such as large shrinkage changes, large water absorption, and low surface strength of these lightweight materials, the outer wall Plastering causes unfavorable factors, and it is more prone to and serious quality problems such as emptying, bulging, seepage, leakage, and cracking. How to eliminate such quality problems has increasingly attracted people's attention. Contents o...

Examples

Embodiment 1

[0025] Example 1. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 1 part of ordinary Portland cement with a strength grade of 32.5, 5.31 parts of fine sand, 0.61 part of secondary fly ash, 0.21 part of thickening powder and 1.33 parts of water to form a uniform composition Dry powder mortar: mix 0.9Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with a mixer for 3 minutes to form the polypropylene fiber dry powder mortar for exterior wall construction of the present invention.

Embodiment 2

[0026] Example 2. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 0.8 parts of ordinary Portland cement with a strength grade of 32.5, 5 parts of fine sand, 0.4 parts of secondary fly ash, 0.1 parts of thickening powder and 1 part of water to form a uniform composition Dry powder mortar: mix 0.8Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with a mixer for 2 minutes to form the polypropylene fiber dry powder mortar for exterior wall construction of the present invention.

Embodiment 3

[0027] Example 3. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 1.2 parts of ordinary Portland cement with a strength grade of 32.5, 6 parts of fine sand, 0.8 parts of secondary fly ash, 0.3 parts of thickening powder and 1 part of water to form a uniform composition Dry powder mortar: mix 1Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with mixer for 4 minutes to form the polypropylene fiber dry powder mortar that exterior wall construction of the present invention is used.

[0028] The polypropylene fibers in the foregoing examples are high-strength polypropylene bundled monofilament fibers processed from 100% PP raw rubber.

[0029] The physical parameter of polypropylene fiber used among the present invention is as table 1,

[0030] Table 1:

[0031] material Polypropylene fibers proportion 0.91kg / m3 Exterior white monofilament melting point 160-175℃ ignite ≥580...

technical field

[0001] The invention relates to a polypropylene fiber dry powder mortar for exterior wall construction, and belongs to the technical field of building materials for exterior wall construction. Background technique

[0002] At present, with the continuation of the use time, the plaster layer of the external wall of the building usually has a series of quality problems such as emptying, swelling, seepage, leakage, and cracking. Especially as the outer wall of the enclosure structure, when lightweight walls such as concrete hollow blocks and aerated concrete are mostly used, due to factors such as large shrinkage changes, large water absorption, and low surface strength of these lightweight materials, the outer wall Plastering causes unfavorable factors, and it is more prone to and serious quality problems such as emptying, bulging, seepage, leakage, and cracking. How to eliminate such quality problems has increasingly attracted people's attention. Contents o...

Examples

Embodiment 1

[0025] Example 1. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 1 part of ordinary Portland cement with a strength grade of 32.5, 5.31 parts of fine sand, 0.61 part of secondary fly ash, 0.21 part of thickening powder and 1.33 parts of water to form a uniform composition Dry powder mortar: mix 0.9Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with a mixer for 3 minutes to form the polypropylene fiber dry powder mortar for exterior wall construction of the present invention.

Embodiment 2

[0026] Example 2. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 0.8 parts of ordinary Portland cement with a strength grade of 32.5, 5 parts of fine sand, 0.4 parts of secondary fly ash, 0.1 parts of thickening powder and 1 part of water to form a uniform composition Dry powder mortar: mix 0.8Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with a mixer for 2 minutes to form the polypropylene fiber dry powder mortar for exterior wall construction of the present invention.

Embodiment 3

[0027] Example 3. Polypropylene fiber dry powder mortar for exterior wall construction. Mix 1.2 parts of ordinary Portland cement with a strength grade of 32.5, 6 parts of fine sand, 0.8 parts of secondary fly ash, 0.3 parts of thickening powder and 1 part of water to form a uniform composition Dry powder mortar: mix 1Kg polypropylene fiber in every cubic meter of dry powder mortar, stir with mixer for 4 minutes to form the polypropylene fiber dry powder mortar that exterior wall construction of the present invention is used.

[0028] The polypropylene fibers in the foregoing examples are high-strength polypropylene bundled monofilament fibers processed from 100% PP raw rubber.

[0029] The physical parameter of polypropylene fiber used among the present invention is as table 1,

[0030] Table 1:

[0031] material Polypropylene fibers proportion 0.91kg / m3 Exterior white monofilament melting point 160-175℃ ignite ≥580...