FIELD: chemistry.
SUBSTANCE: method of plasticiser obtaining includes sulphonation of phenol production wastes by concentrated sulphuric acid, successive two-stage neutralisation of sulphomass: by sodium metasilicate (silicate module-4) and 15% solution of caustic soda (NaOH). To obtain additive in dry form the following drying of plasticiser solution to 0.5% humidity is provided. Components are taken in the following ratio, wt %: wastes from phenol production by cumene method - 3.0-5.0, concentrated sulphuric acid - 15.0÷18.0, sodium metasilicate - 5.5-8.5, caustic soda - 8.5-13.0, water - the remaining part.
EFFECT: reduction of air-involving, increase of density of concrete mixtures and density of products from them.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PLASTICISER ADDITIVE TO CONSTRUCTION MATERIALS, INCLUDING MINERAL BINDERS | 2008 |
|
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| GENERATING METHOD OF FLUIDIZING AGENT FOR CONCRETE MIXTURE | 2006 |
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| METHOD OF PREPARING PLASTICIZER FOR CONCRETE MIXES | 1997 |
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| METHOD OF PRODUCING PLASTICIZER FOR CONCRETE MIXES | 0 |
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| CONCRETE MIX ADMIXTURE MAKING PROCESS | 2007 |
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| METHOD OF PRODUCING COMPLEX ADDITION FOR CONCRETE MIXTURE | 1996 |
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| METHOD OF PRODUCING PLASTICIZER FOR CONCRETE | 2002 |
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| BINDING AGENT AND A METHOD FOR PREPARATION THEREOF | 2002 |
|
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| WASTELESS METHOD OF OBTAINING POLYMETHYLENE NAPHTHALENE SULPHONATES WITH REGULATED LOW CONTENT OF SODIUM SULPHATE | 2011 |
|
RU2527546C2 |
| METHOD OF PREPARING PLASTICIZER FOR CONCRETE MIXES | 1998 |
|
RU2145947C1 |
