Efficient corrosion inhibifing water reducing and plasticity keeping agent for steel pipe concrete
A technology of concrete filled steel tubes and water reducing agent, which is applied in the field of concrete admixtures, can solve the problems of high probability of debonding, reducing the structural integrity of concrete filled steel tubes, and deteriorating the mechanical properties of the structure.
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example 1
[0011] 1). Selection of polycarboxylate superplasticizer: The polyoxyethylene group (ie, EO addition number) as one of the side chains in the molecular structure is 68, and the molar ratio of carboxylic acid group to ester group in the molecule (m / n) is a polycarboxylate water-reducer of 2, and its average molecular weight is 11400; 2). According to polycarboxylate water-reducer: sodium gluconate: zinc sulfate=94.5%: 5%: 0.5% solid mass proportioning is accurate Weigh polycarboxylate superplasticizer, sodium gluconate, zinc sulfate, add sodium gluconate and zinc sulfate in sequence to the weighed polycarboxylate superplasticizer and stir to fully dissolve them, and adjust the solid content of the solution to 33% by adding water. % and mix evenly to get the product. A certain amount of this product is mixed into the C50 concrete filled steel tube with the mix ratio shown in Table 2 below to obtain a concrete filled steel tube material with good mechanical properties and workin...
example 2
[0014] 1). Selection of polycarboxylate superplasticizer: The polyoxyethylene group (ie, EO addition number) as one of the side chains in the molecular structure is 68, and the molar ratio of carboxylic acid group to ester group in the molecule (m / n) is a polycarboxylate water-reducer of 2, and its average molecular weight is 11400; 2). According to polycarboxylate water-reducer: sodium gluconate: zinc sulfate=90%: 8%: 2% solid mass proportioning is accurate Weigh polycarboxylate superplasticizer, sodium gluconate, zinc sulfate, add sodium gluconate and zinc sulfate in sequence to the weighed polycarboxylate superplasticizer and stir to fully dissolve them, and adjust the solid content of the solution to 33% by adding water. % and mix evenly to get the product. A certain amount of this product is mixed into the C50 concrete filled steel tube with the mix ratio shown in Table 3 to obtain a concrete filled steel tube material with good mechanical properties and working properti...
example 3
[0017] 1). Selection of polycarboxylate superplasticizer: the number of polyoxyethylene groups (ie, EO addition number) as one of the side chains in the molecular structure is 68, and the molar ratio of carboxylic acid groups to ester groups in the molecule (m / n) is a polycarboxylate water-reducer of 2, and its average molecular weight is 11400; 2). According to polycarboxylate water-reducer: sodium gluconate: zinc sulfate=87%: 10%: 3% solid mass proportioning is accurate Weigh polycarboxylate superplasticizer, sodium gluconate, zinc sulfate, add sodium gluconate and zinc sulfate in sequence to the weighed polycarboxylate superplasticizer and stir to fully dissolve them, and adjust the solid content of the solution to 33% by adding water. % and mix evenly to get the product. A certain amount of this product is mixed into the C50 steel tube concrete with the mix ratio shown in Table 4 to obtain a steel tube concrete material with good mechanical properties and working properti...
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