CN107311575B - Mortar for plastering anti-seismic wall - Google Patents

Mortar for plastering anti-seismic wall Download PDF

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Publication number
CN107311575B
CN107311575B CN201710770751.5A CN201710770751A CN107311575B CN 107311575 B CN107311575 B CN 107311575B CN 201710770751 A CN201710770751 A CN 201710770751A CN 107311575 B CN107311575 B CN 107311575B
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parts
palm
mortar
palm fibers
fibers
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CN107311575A (en
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李钻水
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Fujian Yongtai Construction Engineering Co ltd
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Fujian Yongtai Construction Engineering Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/2038—Resistance against physical degradation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/2038—Resistance against physical degradation
    • C04B2111/2046—Shock-absorbing materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses mortar for plastering an earthquake-resistant wall, which comprises the following raw materials: 60-80 parts of Portland cement, 40-50 parts of modified palm fiber, 34-38 parts of quartz sand, 20-30 parts of vitrified micro bubbles, 20-30 parts of fly ash, 0.1-0.5 part of aluminum sulfate and 50-100 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, placing the dried palm fibers in a hexamethylphosphoric triamide solution with a water bath ratio of 1:12, heating the palm fibers to 80 ℃ in a water bath, treating the palm fibers for 1.5-3 hours, taking out the palm fibers, washing the palm fibers with water and drying the palm fibers. According to the invention, the palm fiber is modified by using the hexamethylphosphoric triamide solution for the first time, so that the softness of the palm fiber is improved, and the modified palm fiber is added into the mortar, so that the elastic modulus of the mortar is reduced, and the mortar has the remarkable characteristics of high compressive strength, excellent wear resistance, excellent shock resistance, excellent crack resistance and the like.

Description

Mortar for plastering anti-seismic wall
Technical Field
The invention relates to the field of building materials, in particular to mortar for plastering an earthquake-resistant wall.
Background
Cement mortar, also called mortar, is a building material prepared by mixing inorganic cementing materials, fine aggregates and water in proportion, and is widely used in masonry and plastering engineering in building construction to realize building structure and surface protection and decoration. Because the strength of mortar is far lower than that of building blocks, under the action of earthquake, the insufficient bearing capacity of mortar joints becomes one of the main reasons for causing the damage of masonry structures. The existing mortar has relatively low strength, large material brittleness and poor deformability, so that the bearing capacity of a masonry structure is rapidly reduced under the action of an earthquake, and the application of the mortar is greatly limited. Therefore, the existing mortar has the defects of easy brittleness, poor crack resistance and poor seismic performance, and the invention of the mortar with the seismic performance has important significance.
Disclosure of Invention
The invention aims to provide mortar for plastering anti-seismic walls, aiming at the defects of the prior art. According to the invention, the palm fiber is modified by using the hexamethylphosphoric triamide solution for the first time, so that the softness of the palm fiber is improved, and the modified palm fiber is added into the mortar, so that the elastic modulus of the mortar is reduced, and the mortar has the remarkable characteristics of high compressive strength, excellent wear resistance, excellent shock resistance, excellent crack resistance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the mortar for plastering the anti-seismic wall comprises the following raw materials in parts by weight: 60-80 parts of Portland cement, 40-50 parts of modified palm fiber, 34-38 parts of quartz sand, 20-30 parts of vitrified micro bubbles, 20-30 parts of fly ash, 0.1-0.5 part of aluminum sulfate and 50-100 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, placing the dried palm fibers in a hexamethylphosphoric triamide solution with a water bath ratio of 1:12, heating the palm fibers to 80 ℃ in a water bath, treating the palm fibers for 1.5-3 hours, taking out the palm fibers, washing the palm fibers with water and drying the palm fibers.
The mass fraction of the hexamethylphosphoric triamide solution is 15-23%.
The particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
The invention improves the shock resistance, crack resistance and impact resistance of the whole mortar by adding modified palm fibers into the mortar. The natural palm fibers are hard and poor in elasticity because of their close molecular arrangement and high crystallinity, and are easily cracked when added directly to mortar. According to the invention, the palm silk is modified by using the hexamethylphosphoric triamide solution for the first time, so that the softness of the palm silk is improved. The hexamethylphosphoric triamide solution (HMPA) is a polar aprotic solvent with large dipole moment and-NH contained in the molecule2P = O, and has strong hydrogen bond association ability. Therefore, at a certain temperature, HMPA can enter the palm silk macromolecules, and hydrogen bonds are easily formed with hydroxyl groups due to the strong polarity of the HMPA, so that the original hydrogen bonds among the palm silk macromolecules are damaged, the crystallinity of the palm silk is reduced, and the palm silk becomes softer. The modified palm fibers are added into the mortar for the first time, so that the elastic modulus of the mortar can be reduced, and the shock resistance and the impact resistance of the mortar can be obviously improved.
The invention has the beneficial effects that: according to the invention, the palm fiber is modified by using the hexamethylphosphoric triamide solution for the first time, so that the softness of the palm fiber is improved, and the modified palm fiber is added into the mortar, so that the elastic modulus of the mortar is reduced, and the mortar has the remarkable characteristics of high compressive strength, excellent wear resistance, excellent shock resistance, excellent crack resistance and the like.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples.
Comparative example
The mortar for plastering the anti-seismic wall comprises the following raw materials in parts by weight: 70 parts of Portland cement, 45 parts of palm fiber, 36 parts of quartz sand, 25 parts of vitrified micro-beads, 25 parts of fly ash, 0.3 part of aluminum sulfate and 80 parts of water; the particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
The preparation method comprises the following steps: weighing the components according to the weight parts, mixing in a mixer, and forming the product after uniformly mixing.
Example 1
The mortar for plastering the anti-seismic wall comprises the following raw materials in parts by weight: 60 parts of Portland cement, 40 parts of modified palm fiber, 34 parts of quartz sand, 20 parts of vitrified micro bubbles, 20 parts of fly ash, 0.1 part of aluminum sulfate and 50 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, putting the dried palm fibers into a hexamethylphosphoric triamide solution (the mass fraction is 15%) with a water-bath ratio of 1:12, heating the solution to 80 ℃ in a water bath, treating the solution for 1.5 hours, taking out the palm fibers, washing the palm fibers with water, drying the palm fibers, and cutting the palm fibers into pieces of 3-5 cm.
The particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
The preparation method comprises the following steps: weighing the components according to the weight parts, mixing in a mixer, and forming the product after uniformly mixing.
Example 2
The mortar for plastering the anti-seismic wall comprises the following raw materials in parts by weight: 80 parts of Portland cement, 50 parts of modified palm fiber, 38 parts of quartz sand, 30 parts of vitrified micro-beads, 30 parts of fly ash, 0.5 part of aluminum sulfate and 100 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, putting the dried palm fibers into a hexamethylphosphoric triamide solution (23% by mass) with a water-bath ratio of 1:12, heating the solution to 80 ℃ in a water bath, treating the solution for 3 hours, taking out the palm fibers, washing the palm fibers with water and drying the palm fibers.
The particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
The preparation method comprises the following steps: weighing the components according to the weight parts, mixing in a mixer, and forming the product after uniformly mixing.
Example 3
The mortar for plastering the anti-seismic wall comprises the following raw materials in parts by weight: 70 parts of Portland cement, 45 parts of modified palm fiber, 36 parts of quartz sand, 25 parts of vitrified micro-beads, 25 parts of fly ash, 0.3 part of aluminum sulfate and 80 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, putting the dried palm fibers into a hexamethylphosphoric triamide solution (mass fraction is 18%) with a water-bath ratio of 1:12, heating the solution to 80 ℃ in a water bath, treating the solution for 2 hours, taking out the palm fibers, washing the palm fibers with water and drying the palm fibers.
The particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
Test and test: the test determines the compressive strength, bond strength, crack index, elastic modulus and abrasion resistance of the mortar of the invention, and the test results are shown in table 1 below.
TABLE 1
Figure DEST_PATH_IMAGE001
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.

Claims (3)

1. The utility model provides a antidetonation wall whitewashes and uses mortar which characterized in that: the mortar comprises the following raw materials in parts by weight: 60-80 parts of Portland cement, 40-50 parts of modified palm fiber, 34-38 parts of quartz sand, 20-30 parts of vitrified micro bubbles, 20-30 parts of fly ash, 0.1-0.5 part of aluminum sulfate and 50-100 parts of water; the preparation method of the modified palm fiber comprises the following steps: drying the palm fibers until the water content is lower than 5wt%, placing the dried palm fibers in a hexamethylphosphoric triamide solution, heating the dried palm fibers to 80 ℃ in a water bath, treating the dried palm fibers for 1.5-3 hours, taking out the palm fibers, washing the palm fibers with water and drying the palm fibers; the mass-volume ratio of the dried palm fibers to the hexamethylphosphoric triamide solution is 1: 12.
2. Mortar for plastering an earthquake-resistant wall according to claim 1, wherein: the mass fraction of the hexamethylphosphoric triamide solution is 15-23%.
3. Mortar for plastering an earthquake-resistant wall according to claim 1, wherein: the particle size range of the fly ash is 0.15-0.25mm, and the particle size range of the quartz sand is 0.05-0.2 mm.
CN201710770751.5A 2017-08-31 2017-08-31 Mortar for plastering anti-seismic wall Active CN107311575B (en)

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Application Number Priority Date Filing Date Title
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CN107311575B true CN107311575B (en) 2020-06-05

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111334113B (en) * 2020-04-16 2021-08-10 湖南威邦新材料有限公司 High-strength anti-cracking elastic putty powder for exterior wall and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101279835A (en) * 2008-05-27 2008-10-08 江西省晨晖节能材料有限公司 Fiber modified construction thermal insulation material
CN104529328A (en) * 2014-12-10 2015-04-22 深圳大学 High-crack-resistant palm fiber self-compacting concrete
CN105254239A (en) * 2015-10-17 2016-01-20 无为县华标新型墙体材料有限公司 Rapid hardening cement wallboard and production technology thereof
CN106673544A (en) * 2016-12-12 2017-05-17 天津飞鸟科技有限公司 Energy-saving environment-friendly building foam cement
CN106966659A (en) * 2017-04-07 2017-07-21 南京航空航天大学 A kind of water-fast crack resistance type foam concrete and preparation method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316855A (en) * 2001-04-17 2002-10-31 Kenzai Gijutsu Kenkyusho:Kk Method for producing glass fiber-reinforced cement hardened body
CN104261763A (en) * 2014-09-21 2015-01-07 山东农业大学 Glass bead and wheat straw composite thermal insulation mortar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101279835A (en) * 2008-05-27 2008-10-08 江西省晨晖节能材料有限公司 Fiber modified construction thermal insulation material
CN104529328A (en) * 2014-12-10 2015-04-22 深圳大学 High-crack-resistant palm fiber self-compacting concrete
CN105254239A (en) * 2015-10-17 2016-01-20 无为县华标新型墙体材料有限公司 Rapid hardening cement wallboard and production technology thereof
CN106673544A (en) * 2016-12-12 2017-05-17 天津飞鸟科技有限公司 Energy-saving environment-friendly building foam cement
CN106966659A (en) * 2017-04-07 2017-07-21 南京航空航天大学 A kind of water-fast crack resistance type foam concrete and preparation method

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