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A kind of high and low temperature resistant sleeve grouting material and preparation method thereof

A sleeve grouting, high and low temperature resistant technology, applied in the field of construction engineering

Active Publication Date: 2021-04-30
福建兴纳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grouting material is used in conjunction with continuous graded fine aggregate and cement, adding phosphogypsum composite expansion agent, reinforcing agent, retarder, polycarboxylate water reducer and early strength agent, so that the mortar has good water retention and plasticity And flexibility, tensile bond strength, mortar compressive strength and flexural strength are significantly improved, meeting the requirements for the use of prefabricated buildings, but it is still not mentioned that it can be applied at negative temperatures

Method used

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  • A kind of high and low temperature resistant sleeve grouting material and preparation method thereof
  • A kind of high and low temperature resistant sleeve grouting material and preparation method thereof
  • A kind of high and low temperature resistant sleeve grouting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0055] (1) Take 10.0kg tetramethyldivinyldisiloxane and 50kg octamethylcyclotetrasiloxane (D4) and place them in the reaction kettle, start the stirrer, add 3.0kg concentrated sulfuric acid as catalyst at the same time, heat up to 60°C, keep stirring under normal pressure for 6 hours, then lower to below 50°C to remove the filter agent, remove low molecular weight at 120-160°C for 5-8 hours at a pressure below 133Kpa, and obtain the intermediate vinyl-terminated polysilicon Oxygen, low molecular weight can be reused.

[0056] (2) After the above (1) reaction is completed, add 40kg rosin and 0.08kg hydroquinone catalyst, heat up to 200°C for Diels-Alder addition reaction, and after 6 hours of reaction, vacuumize to 3mmHg to remove the low boiling point impurities, the product was cooled to room temperature to obtain the rosin-modified silicone resin.

[0057] Water reducer preparation example 1

[0058] 1. Base material preparation

[0059] 30 kg of deionized water, 60 kg of...

preparation Embodiment 2

[0067] Other steps are the same as in Example 1, except that 2 kg of rosin-modified silicone resin is not added to the base material, but 3 kg of acrylic acid is added, and 3 kg of acrylic acid is not added in the dropping material A, but 2 kg of rosin-modified silicone resin is added. Silicone resin.

preparation Embodiment 3

[0069] Other conditions were the same as in Example 1, except that the amount of rosin-modified silicone resin added was 0.4 kg. Water reducer preparation example 4

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Abstract

The invention provides a high and low temperature resistant sleeve grouting material and its preparation method. The sleeve grouting material is mainly composed of cement, aggregate, admixture, polycarboxylate water reducer, coagulant accelerator, retarder and other raw materials Composition, the preparation method of the sleeve grouting material is simple, easy to operate, and after grouting at negative temperature can form a firm bond between the steel bar and the sleeve, and has high fluidity, high strength, micro-expansion and good durability.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a sleeve grouting material suitable for application at negative temperatures and a preparation method thereof. Background technique [0002] Prefabricated buildings have the advantages of fast construction speed, energy saving and environmental protection, and integration, and have become an important development direction of contemporary architecture. Some documents pointed out that the proportion of prefabricated buildings in new construction area should be accelerated, and the proportion of prefabricated buildings in new construction area should reach 30% in about 10 years. At present, the sleeve grouting connection accounts for more than 80% of the vertical connection market of prefabricated concrete components. [0003] Sleeve grouting material is an important component material of steel sleeve grouting connection, its performance determines the reliability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C08F283/06C08F283/12C08F220/58C08F220/56C08F220/06C08F228/02C08G77/38C04B111/70
CPCC04B28/14C04B2111/70C04B2201/50C08F283/06C08F283/12C08G77/38C04B7/02C04B7/32C04B14/00C04B2103/302C04B2103/12C04B2103/22C04B18/146C04B18/082C04B18/141C08F220/585
Inventor 马清浩
Owner 福建兴纳科技有限公司