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Slow-setting type waterproof mortar having self-repairing function and secondary permeability resistance as well as preparation method thereof

A technology of secondary impermeability and waterproof mortar, applied in the field of building waterproof materials, can solve the problems of lack of self-healing function and secondary impermeability, etc.

Inactive Publication Date: 2016-02-24
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a retarded waterproof mortar with self-repair function and secondary impermeability, to solve the problem that the existing retarded ordinary waterproof mortar and polymer modified waterproof mortar have no self-repair function and technical issues of secondary impermeability

Method used

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  • Slow-setting type waterproof mortar having self-repairing function and secondary permeability resistance as well as preparation method thereof
  • Slow-setting type waterproof mortar having self-repairing function and secondary permeability resistance as well as preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] This example is an ordinary waterproof mortar: 52 kg of mixed cement, 36 kg of quartz sand, 2.2 kg of silica fume, 3 kg of heavy calcium, 5 kg of osmotic crystallization active masterbatch, 0.3 kg of defoamer, 1 kg of naphthalene-based water reducer, Lithium carbonate coagulant 0.4 kg, cellulose ether 0.1 kg. The weight ratio of ordinary Portland cement to quick-setting sulphoaluminate cement in the mixed cement is 8:1.

[0034] Its preparation method is as follows: Weigh all the components according to the formula amount, add them to the planetary mortar mixer and stir slowly for 23 seconds, then add the water required by the formula amount, then stir slowly for 37 seconds, then switch to fast stirring, and stop stirring after 30 seconds A retarded waterproof mortar can be prepared.

Embodiment 2

[0036] This example is ordinary waterproof mortar: 46 kg of mixed cement, 30 kg of quartz sand, 1.5 kg of silica fume, 5 kg of heavy calcium, 9 kg of osmotic crystal active masterbatch, 0.6 kg of defoamer, 1.5 kg of naphthalene-based water reducer, Lithium carbonate coagulant 0.2 kg, cellulose ether 0.05 kg. The weight ratio of ordinary Portland cement to quick-setting sulphoaluminate cement in the mixed cement is 8:1.

[0037] Its preparation method is as follows: Weigh all the components according to the formula amount, add them to the planetary mortar mixer and stir slowly for 23 seconds, then add the water required by the formula amount, then stir slowly for 37 seconds, then switch to fast stirring, and stop stirring after 30 seconds A retarded waterproof mortar can be prepared.

Embodiment 3

[0039] This example is an ordinary waterproof mortar: 48 kg of mixed cement, 32 kg of quartz sand, 1.8 kg of silica fume, 4 kg of heavy calcium, 8 kg of osmotic crystal active masterbatch, 0.5 kg of defoamer, 1.2 kg of naphthalene-based water reducer, Lithium carbonate coagulant 0.3 kilogram, cellulose ether 0.08 kilogram. The weight ratio of ordinary Portland cement to quick-setting sulphoaluminate cement in the mixed cement is 8:1.

[0040] Its preparation method is as follows: Weigh all the components according to the formula amount, add them to the planetary mortar mixer and stir slowly for 23 seconds, then add the water required by the formula amount, then stir slowly for 37 seconds, then switch to fast stirring, and stop stirring after 30 seconds A retarded waterproof mortar can be prepared.

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Abstract

The invention discloses a slow-setting type waterproof mortar having self-repairing function and secondary permeability resistance as well as a preparation method thereof. The slow-setting type waterproof mortar having self-repairing function and secondary permeability resistance is prepared by using the following raw materials and water: a mixed cement, quartz sand, silica fume, heavy calcium, a capillary crystalline active master, a water reducer, an antifoaming agent, a coagulation accelerator and cellulose ether; and the mixed cement is composed of an ordinary portland cement and a quick-setting type sulphoaluminate cement. The slow-setting type waterproof mortar is used for repairing construction, if secondary leakage is happened, the capillary crystalline active master, the repairing mortar and a cement hydration product portlandite in concrete are continuously reacted for realizing self restoration, so that secondary anti-permeability effect can be reached, and secondary or multi-time restoration for regenerated cracks can be avoided.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, in particular to a slow-setting waterproof mortar with self-repair function and secondary impermeability. Background technique [0002] Roads, bridges, tunnels, basements of buildings, water conservancy facilities and other projects that use concrete as building materials usually suffer from structural defects (such as cracks, cracks and Micropores) infiltrate and corrode the steel bars inside the concrete, resulting in the degradation of the performance of the reinforced steel bars inside the concrete, seriously affecting the service life of the construction project. In order to prolong the service life of these construction projects, it is urgent to repair the defective parts in the concrete structure. And waterproof mortar is an effective repair and leak-proof material. [0003] Waterproof mortar can be divided into slow-setting waterproof mortar and quick-setting water...

Claims

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Application Information

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IPC IPC(8): C04B28/06
Inventor 薛晓张卫东蒋立红李艳稳屈建秦杰张红强张荣普张子英
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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