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Retarding and water reducing agent

A technology of retarding water reducing agent and additives, which is applied in the field of retarding water reducing agents, can solve the problems of short retarding time and inability to meet the requirements of high-strength and high-performance concrete for pumping construction, and achieve the improvement of mechanical properties, improvement and mechanical properties. Effects of performance, improved workability

Active Publication Date: 2014-10-29
重庆砼磊高新混凝土有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The retarding water reducer used in the market currently has a short retarding time, which cannot meet the requirements of pumping construction and high-strength and high-performance concrete

Method used

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  • Retarding and water reducing agent

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Embodiment Construction

[0010] A retarding water reducer, which is made by mixing the following raw materials by weight (kg): β-naphthalene sulfonate formaldehyde condensate 40, sulfonated acetone-formaldehyde condensate 25, hydroxypropyl methylcellulose 12, cheese Su 8, Glauber's salt 4, sulfonated coal tar 6, borax 3, slaked lime 8, activated sludge 12, sodium fluorosilicate 7, oil foot 3.5, tartaric acid 2.5, zinc molybdate 4, triethyl phosphate 5, maltodextrin 3. Sodium methacrylate 6. Additive 5;

[0011] The auxiliary agent is made of the following raw materials by weight (kg): magnesite 12, magnesium humate 4, ammonium benzoate 3, sodium α-alkenyl sulfonate 10, phytate 2, isobutene tri Ethoxysilane 4, polyferric chloride 7, germanite powder 16, titanium dioxide 8, myristyl glucoside 1, polyamide wax 5, lithium magnesium silicate 3, tea saponin 2;

[0012] Mix the above-mentioned magnesite, germanite powder, and titanium dioxide evenly, then add sodium α-alkenyl sulfonate, isobutylene triethox...

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Abstract

The invention discloses a retarding and water reducing agent prepared by mixing the following raw materials in parts by weight: 35-45 parts of beta-naphthalene sulfonated formaldehyde condensates, 20-30 parts of sulfonated acetone-formaldehyde condensates, 10-15 parts of hydroxypropyl methyl cellulose, 6-12 parts of casein, 3-6 parts of mirabilite, 4-8 parts of sulfonated coal tar, 2-4 parts of borax, 5-10 parts of slaked lime, 8-14 parts of activated sludge, 5-10 parts of sodium fluosilicate, 2.5-4.5 parts of oil foot, 2-3 parts of tartaric acid, 3-5 parts of zinc molybdate, 4-6 parts of triethyl phosphate, 2-4 parts of maltodextrin, 4-8 parts of sodium methallyl sulfonate and 3-6 parts of auxiliary. The water reducing agent disclosed by the invention is good in retarding effect, good in adaptability to various kinds of cement, free of corrosion to reinforcing steel bars and capable of prolonging the setting time by 2-4h, achieving the water reducing rate of 15-20%, greatly improving the workability of concrete and improving various mechanical properties of the concrete, and can be used for various reinforced concrete works.

Description

technical field [0001] The invention relates to a retarding water reducer, which belongs to the field of concrete admixtures. Background technique [0002] Concrete admixtures, referred to as admixtures for short, refer to substances that are added to improve the performance of concrete before or during the mixing of concrete. Because admixtures can effectively improve the performance of concrete and have good economic benefits, they have been widely used in many countries, and their application in engineering has attracted more and more attention, becoming an indispensable material in concrete. Among them, retarding superplasticizer is a kind of concrete admixture, which can delay the setting time of concrete, make fresh concrete maintain plasticity for a long time, facilitate pouring, improve construction efficiency, and at the same time, it will not cause adverse effects on various performances of concrete in the later stage effect, and also has the effect of reducing wa...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B24/38C04B24/22C04B103/30C04B103/22
Inventor 徐松夏晖蔺红亮
Owner 重庆砼磊高新混凝土有限公司
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