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Sulphoaluminate cement foamed concrete used in low-temperature environment and preparation method thereof

A technology of sulphoaluminate cement and foam concrete, which is applied in applications, household utensils, ceramic products, etc., and can solve the problems of sulphoaluminate cement not being steam-cured, slow sulphoaluminate cement hydration, and low strength of foam concrete, etc. problems, to achieve the effect of unaffected concrete strength, fast hardening, and early strength improvement

Pending Publication Date: 2018-06-29
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in winter or when the temperature is low, the hydration of sulphoaluminate cement is slow, so the early strength of foamed concrete prepared with it is low, and sulphoaluminate cement cannot be steamed, which affects demoulding and reduces production efficiency.

Method used

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  • Sulphoaluminate cement foamed concrete used in low-temperature environment and preparation method thereof

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preparation example Construction

[0035] In addition, the present invention also provides a kind of preparation method of sulphoaluminate cement foam concrete, and this preparation method comprises the following steps:

[0036] 1) Weigh the sulfoaluminate cement, fly ash, concrete water, water reducer, fiber, light aggregate, and nanomaterials according to the above proportions, and then put them into the concrete mixer and mix them evenly. The mixing time is 2-4 minutes , to obtain sulphoaluminate cement slurry;

[0037]2) Weigh the foaming agent water and foaming agent according to the proportion; pour the weighed foaming agent into the foaming agent water and stir evenly for 0.5-1.5 min to obtain a foaming agent solution;

[0038] 3) Blow the foaming agent solution in step 2) into concrete foam through the foaming agent, add the concrete foam into the sulphoaluminate cement slurry obtained in step 1) according to the proportion, and continue stirring for 0.5-1.5min , to get sulphoaluminate cement foam conc...

Embodiment 1

[0040] This embodiment also provides a preparation method of sulphoaluminate cement foam concrete, the preparation method comprising the following steps:

[0041] 1) Weigh 100 parts of sulphoaluminate cement, 30 parts of concrete water, 1 part of water reducer, 0.2 part of fiber, 50 parts of light aggregate, and 1 part of nanomaterials according to the above ratio, then put them into the concrete mixer and mix them Uniform, stirring time is 3min, get sulphoaluminate cement slurry;

[0042] 2) Weigh foaming agent water and foaming agent according to the proportioning ratio of foaming agent and foaming agent water of 1:45 by weight; pour the foaming agent after weighing into foaming agent water and stir evenly, Stirring time is 1min to obtain foaming agent solution;

[0043] 3) The blowing agent solution in step 2) is blown into concrete foam through the blowing agent, and the concrete foam is added to step 1) according to the volume ratio of sulfoaluminate cement slurry and co...

Embodiment 2

[0047] This embodiment also provides a preparation method of sulphoaluminate cement foam concrete, the preparation method comprising the following steps:

[0048] 1) After weighing 75 parts of sulfoaluminate cement, 25 parts of fly ash, 25 parts of concrete water, 1.5 parts of water reducing agent, 0.3 parts of fiber, 80 parts of light aggregate and 0.2 parts of nanomaterials according to the above ratio Put it into a concrete mixer and stir evenly for 4 minutes to obtain a sulphoaluminate cement slurry;

[0049] 2) Weigh foaming agent water and foaming agent according to the proportioning ratio of foaming agent and foaming agent water in a weight ratio of 1:60; pour the weighed foaming agent into foaming agent water and stir evenly, Stirring time is 0.5min to obtain foaming agent solution;

[0050] 3) The blowing agent solution in step 2) is blown into concrete foam through the blowing agent, and the concrete foam is added to step 1) according to the volume ratio of sulfoalu...

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Abstract

The invention provides sulphoaluminate cement foamed concrete used in a low-temperature environment and a preparation method thereof. The sulphoaluminate cement foamed concrete is prepared from a sulphoaluminate cement paste body and concrete foam, wherein the sulphoaluminate cement foamed concrete is prepared by stirring the sulphoaluminate cement paste body and the concrete foam according to a volume ratio of 1 to (1 to 4) and hardening the materials. The sulphoaluminate cement paste body is prepared from the following components in parts by weight: 75 to 100 parts of sulphoaluminate cement,0 to 25 parts of fly ash, 25 to 40 parts of concrete water, 0 to 1.5 parts of water reducing agent, 0 to 100 parts of lightweight aggregates, 0.2 to 5 parts of nano-materials, and 0.1 to 0.4 part offibers, wherein the total amount sum of the sulphoaluminate cement and the fly ash is 100 parts. The preparation method disclosed by the invention is characterized in that the nano-materials are added, so that the nano-materials can quicken a hydration rate of the sulphoaluminate cement at the low temperature, so that the early strength of the foamed concrete is improved; by using the sulphoaluminate cement as a main gelatinization material, the hardening of the concrete is quick, addition of coagulant is not needed, the strength of the concrete is not affected; meanwhile, breaking of foams isalso inhibited preferably.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a sulphoaluminate cement foam concrete used in a low-temperature environment and a preparation method thereof. Background technique [0002] Sulphoaluminate cement is a cement independently researched and invented by our country. It is also the special cement with the largest output in my country. Its setting time is short, its strength develops rapidly, and its hydration products are different from Portland cement. Therefore, this sulphoaluminate cement is used Concrete made of cement is resistant to salt erosion, and its impermeability and frost resistance are also significantly higher than Portland cement concrete, so it can be used in construction projects with special requirements. In addition, the strength of sulfoaluminate cement is higher than that of Portland cement, the setting time is short, and the strength develops rapidly, so it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/10C04B20/00
CPCC04B20/008C04B28/06C04B38/106C04B2111/76C04B22/002C04B2103/302C04B16/06C04B14/42C04B14/46C04B18/027C04B24/14C04B18/08
Inventor 邹定华李海艳滕冬冬乔新峰王可
Owner HENAN POLYTECHNIC UNIV
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