Seat mortar for low-temperature prefabricated buildings and preparation method thereof

A prefabricated and architectural technology, applied in the field of building materials, to achieve the effects of ensuring quality and safety, compensating shrinkage, and improving fluidity

Active Publication Date: 2022-06-21
WUHAN YUANJIN BUILDING MATERIALS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned application methods of these existing patented technologies are all used for steel sleeve grouting materials, not for seam sealing edge banding of prefabricated buildings

Method used

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  • Seat mortar for low-temperature prefabricated buildings and preparation method thereof
  • Seat mortar for low-temperature prefabricated buildings and preparation method thereof
  • Seat mortar for low-temperature prefabricated buildings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The low-temperature type prefabricated building block mortar provided in this embodiment, its raw materials include 10wt% of ordinary cement, 40wt% of special cement, 42wt% of aggregate, 4wt% of mineral admixture, 0.13wt% of plastic expansion component, expansion agent 2wt%, setting modifier 0.17wt%, antifreeze 1wt%, construction performance improver 0.6wt%, admixture 0.1wt%.

[0038] The weight ratio of the raw material azo compound of the plastic expansion agent and the tribasic lead sulfate is 1:1. The weight ratio of the raw material early strength agent and the setting retarder of the set control agent is 1:1.

Embodiment 2

[0040] The low-temperature type prefabricated building block mortar provided in this embodiment, its raw materials include ordinary cement 5wt%, special cement 50wt%, aggregate 35wt%, mineral admixture 10.29wt%, plastic expansion component 0.01wt%, expansion 2 wt % of agent, 1 wt % of setting modifier, 1 wt % of antifreeze, 0.6 wt % of workability improver, and 0.1 wt % of admixture. The raw materials and mass ratios of the plastic expansion agent and the setting modifier are the same as those in Example 1.

Embodiment 3

[0042] The low-temperature prefabricated building block mortar provided in this embodiment includes 15wt% of ordinary cement, 27.25wt% of special cement, 50wt% of aggregate, 3wt% of mineral admixture, 1wt% of plastic expansion component, and expansion agent. 2wt%, setting modifier 0.05wt%, antifreeze 1wt%, construction performance improver 0.6wt%, admixture 0.1wt%. The raw materials and mass ratios of the plastic expansion agent and the setting modifier are the same as those in Example 1.

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Abstract

The invention discloses a low-temperature prefabricated building block mortar and a preparation method thereof, belonging to the technical field of building materials, and its raw materials include 5-15wt% of ordinary cement, 15-50wt% of special cement, 35-50wt% of aggregate, mineral Admixture 3‑15wt%, plastic expansion component 0.01‑1wt%, expansion agent 1‑10wt%, coagulation regulator 0.05‑1wt%, antifreeze 0.05‑5wt%, construction performance improver 0.1‑5wt%, admixture 0.01‑1wt%; wherein, the plastic expansion agent is a powder particle made by adding azo compound and tribasic lead sulfate to absolute ethanol, stirring and drying; The early strength agent is a "tangyuan" structure powder particle composed of the inner core. The invention effectively improves the working performance of the prefabricated building mortar at -5°C by selecting the plastic expansion component and the coagulation regulator made of specific raw materials and specific preparation methods, improves the mechanical strength of the mortar, and effectively To compensate the shrinkage in the plastic stage, all materials and facilities in the construction process do not need to be heated, and the construction site does not need to be closed, heated, or insulated.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a low-temperature type prefabricated building block mortar. Background technique [0002] As a building form that is currently developing vigorously, prefabricated buildings are expected to become one of the mainstream building forms in the future. The prefabricated building has the characteristics of green, environmental protection, convenient and fast construction. With the continuous promotion of prefabricated buildings, the grouting connection technology of steel bar sleeves has also been highly recognized by all walks of life. As a connecting material for prefabricated buildings, the mortar mortar is mainly used for prefabricated components to be hoisted after wall columns and Edge sealing treatment of gaps between bottom plates, sub-silo construction, and grouting construction. The newly implemented national standard JG / T 408-2019 "Sleeve grouting material for steel bar ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2201/50C04B2201/52C04B22/00C04B14/02C04B14/043C04B14/22C04B14/365C04B18/08C04B18/146C04B22/085C04B24/04C04B2103/304C04B2103/0057C04B16/0683C04B16/0633C04B24/42C04B2103/302C04B2103/0068
Inventor 陈冬冬徐鹏杨辉柯伟席雷生李亚茜
Owner WUHAN YUANJIN BUILDING MATERIALS TECH CO LTD
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