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Accelerator for concrete and mortar
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A quick-setting agent and concrete technology, which is applied in the field of building materials, can solve the problems of reducing the strength and durability of concrete or mortar, harming human health, corrosion of construction personnel, etc., and achieves strong adhesion, high early strength and good adaptability Effect
Active Publication Date: 2017-11-17
滁州京安工贸有限责任公司
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Problems solved by technology
However, the general quick-setting agent has the following problems: the loss of strength in the later period is large. On the one hand, the high alkali content causes corrosion to the construction personnel and damages human health. On the other hand, it may also cause alkali-aggregate reaction and reduce the strength of concrete or mortar. and durability
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Embodiment 1
[0022] (1) Dissolve 60 parts of sodium hydroxide in 60 parts of water to form an aqueous solution, then add 80 parts of bauxite powder, mix well, microwave at a microwave frequency of 2450MHz and a power of 600W for 10min, then add 55 parts of modified kaolin and 12 parts of putty powder, grind for 15 minutes, dry in an oven at 75-80°C for 12 hours, and then send it to a rotary kiln at 1300-1500°C for calcination for 2 hours to obtain alumina clinker;
[0023] (2) Add 5 parts of citric acid to 25 parts of furnace ash, mix well, let it stand for 30 minutes, then add 10 parts of nano rubber powder and 6 parts of sodium polyacrylate, heat the mixture to 85-90°C and keep stirring for 15 minutes, then After cooling down to room temperature, add 15 parts of lauryl alcohol ester, 8 parts of polyvinyl alcohol cinnamate and 6 parts of sugarcane wax, and mix well to obtain the mixed powder;
[0024] (3) Put the alumina clinker and mixed powder into the ball mill, and ball mill until the...
Embodiment 2
[0028] (1) Dissolve 70 parts of sodium hydroxide in 70 parts of water to form an aqueous solution, then add 90 parts of bauxite powder, mix well, microwave at a microwave frequency of 2450MHz and a power of 600W for 15min, and then add 60 parts of modified kaolin and 15 parts of putty powder, after grinding for 20 minutes, place it in an oven at 75-80°C for 12 hours, and then send it to a rotary kiln at 1300-1500°C for calcination for 2 hours to obtain alumina clinker;
[0029] (2) Add 7 parts of citric acid to 30 parts of furnace ash, mix well, let stand for 30 minutes, then add 15 parts of nano rubber powder and 8 parts of sodium polyacrylate, heat the mixture to 85-90°C and keep stirring for 20 minutes, then After cooling down to room temperature, add 18 parts of lauryl alcohol ester, 10 parts of polyvinyl alcohol cinnamate and 8 parts of sugarcane wax, and mix well to obtain the mixed powder;
[0030] (3) Put the alumina clinker and mixed powder into the ball mill, and bal...
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Abstract
The invention discloses a quick-setting agent for concrete and mortar, which relates to the technical field of building materials and is made of the following raw materials in parts by weight: 80-90 parts of bauxite powder, 60-70 parts of sodium hydroxide, and 50 parts of modified kaolin ‑60 parts, furnace ash 25‑30 parts, putty powder 12‑18 parts, lauryl alcohol ester 15‑20 parts, nano rubber powder 10‑15 parts, polyvinyl alcohol cinnamate 8‑12 parts, polyacrylic acid Sodium 6‑10 parts, citric acid 5‑8 parts, sugarcane wax 5‑8 parts, water 60‑70 parts. The quick-setting agent prepared by the present invention is weakly alkaline, non-toxic, non-polluting, has short setting time, strong cohesive force, and good adaptability to cement, which is beneficial to improving the early strength of concrete or mortar, and has an influence on its later strength. Small.
Description
Technical field: [0001] The invention relates to the technical field of building materials, in particular to an accelerator for concrete and mortar. Background technique: [0002] Accelerator is a set-adjusting agent that can speed up the setting and hardening of cement concrete and mortar. Since its production and use in the 1930s, accelerators have become one of the important components of shotcrete due to their remarkable characteristics in quick setting and early strength. However, the general quick-setting agent has the following problems: the loss of strength in the later period is large. On the one hand, the high alkali content causes corrosion to the construction personnel and damages human health. On the other hand, it may also cause alkali-aggregate reaction and reduce the strength of concrete or mortar. and durability. Invention content: [0003] The technical problem to be solved by the present invention is to provide a quick-setting agent for concrete and mo...
Claims
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Application Information
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