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A repairing mortar and modification technology, applied in the field of construction mortar, can solve the problems of late strength shrinkage, the performance of repairing materials, and the setting time is too fast, and achieve the effect of reducing the amount of shrinkage deformation, reducing the amount of shrinkage deformation, and suitable setting time.
Inactive Publication Date: 2016-06-22
张耀忠
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Problems solved by technology
[0002] At present, domestic research on repair materials is mainly concentrated on traditional epoxy resin mortar or resin concrete, and this kind of composite material has high requirements on material compatibility, complicated preparation, high cost, aging, Destruction phenomena such as cracking make the performance of repair materials drop significantly. At the same time, most Portland cement-based repair materials cannot meet the requirements of rapid setting hardening and early strength.
Although the sulphoaluminate cement used in some emergency projects has the advantages of fast setting time and high early strength, it also has disadvantages such as later strength shrinkage, too fast setting time and inconvenient construction.
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Embodiment 1
[0017] Embodiment 1: A kind of modified repairing mortar is characterized in that, is formed by mixing the following components by weight percentage:
[0018] 5 parts of sulphoaluminate cement
[0019] Ordinary Portland cement 25 parts
[0020] 30 parts of quartz sand
[0021] Composite early strength agent 1.2 parts
[0022] 0.5 parts of water retaining agent
[0023] Anti-cracking fiber 0.8 parts
[0024] 0.5 parts of water reducer
[0025] 37 parts of water.
Embodiment 2
[0026] Embodiment 2: A kind of modified repair mortar is characterized in that, is mixed by weight percentage by following components:
[0027] 7 parts of sulphoaluminate cement
[0028] Ordinary Portland cement 28 parts
[0029] 30 parts of quartz sand
[0030] Sodium sulfate 0.3 parts
[0031] 0.3 parts of triethanolamine
[0032] Calcium formate 0.3 parts
[0033] 0.8 parts of water retaining agent
[0034] Anti-cracking fiber 0.8 parts
[0035] 0.5 parts of water reducer
[0036] 32 parts of water.
Embodiment 3
[0037] Embodiment 3: A kind of modified repairing mortar is characterized in that, is formed by mixing the following components by weight percentage:
[0038] 7 parts of sulphoaluminate cement
[0039] Ordinary Portland cement 28 parts
[0040] 30 parts of quartz sand
[0041] Sodium sulfate 0.3 parts
[0042] 0.3 parts of triethanolamine
[0043] Calcium formate 0.3 parts
[0044] 0.8 parts of 100,000 viscosity hydroxypropyl methylcellulose ether
[0045] 0.8 parts of polypropylene fiber with a diameter of 20-30um
[0046] 0.5 parts of water reducer
[0047] 32 parts of water.
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Abstract
The invention discloses modified repair mortar. The modified repair mortar is prepared by mixing sulphoaluminate cement, ordinary silicate cement, quartz sand, a complex early strength agent, a water-retaining agent, anti-crack fibers, a water reducing agent and water. According to the modified repair mortar, a sulphoaluminate cement and ordinary silicate cement mixed cementing material is adopted, the optimal mix and match proportion is selected, the early strength of the mortar is high, the setting time is proper, and construction is convenient. In addition, the complex early strength agent, the water-retaining agent, the water reducing agent and the like are added, and therefore better strength of the mortar in early stage and later stage is effectively guaranteed. The anti-crack fibers are added in the components, shrinkage deformation of the mortar is greatly reduced, when the mortar is under stress, the anti-crack fibers play an active prevention role in generation and development of cracks, the shrinkage deformation is obviously reduced, and cracks generated in the repair mortar setting and hardening processes and under stress are reduced.
Description
technical field [0001] The invention relates to a construction mortar, in particular to a modified repair mortar. Background technique [0002] At present, domestic research on repair materials is mainly concentrated on traditional epoxy resin mortar or resin concrete, and this kind of composite material has high requirements on material compatibility, complicated preparation, high cost, aging, Destruction phenomena such as cracking make the performance of repair materials drop significantly. At the same time, most Portland cement-based repair materials cannot meet the requirements of rapid setting hardening and early strength. Although the sulphoaluminate cement used in some emergency projects has the advantages of fast setting time and high early strength, it also has disadvantages such as later strength shrinkage and too fast setting time, which is not convenient for construction. Contents of the invention [0003] The object of the present invention is to provide a mo...
Claims
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Application Information
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