Comparison Study on Bending Property of High Strength Deformed Bars for Concrete Reinforcement

Seki, Hiroshi; Akatsuka, Yuzo

doi:10.2208/jscej1949.1968.160_68

Transactions of the Japan Society of Civil Engineers

1968

DOI: 10.2208/jscej1949.1968.160_68

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Comparison Study on Bending Property of High Strength Deformed Bars for Concrete Reinforcement

Hiroshi Seki¹,

Yuzo Akatsuka²

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2020

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Haloaldehyde polymers. IX. Polybromodichloroacetaldehyde

Lipp

Vogl

1978

J. Polym. Sci. Polym. Chem. Ed.

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Bromodichloroacetaldehyde was synthesized by two methods. The first synthesis started from chloral, which was allowed to react with Ph3P and the resultant compound brominated and hydrolyzed to give bromodichloroacetaldehyde in an overall yield of 60%. Purification by repeated distillation from P2O5 gave polymerization grade bromodichloroacetabldehyde. Bromodichloroacetaldehyde could also be synthesized by bromination of dichloroacetaldehyde diethyl acetal. The yields of this synthesis were only 20–30%, and the aldehyde could not be purified readily to give polymerization grade monomer. Bromodichloroacetaldehyde could be homopolymerized at −30°C with anionic and also some cationic initiators to a polymer which was insoluble and did not melt but degraded to monomer above 200°C. The ceiling temperature of the polymerization was −15°C in 1M solution. Bromodichloroacetaldehyde could also be copolymerized with isocyanates, primarily aryl isocyanates, and also with chloral.

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Haloaldehyde polymers. IX. Polybromodichloroacetaldehyde

Lipp

Vogl

1978

J. Polym. Sci. Polym. Chem. Ed.

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show abstract

Slender Columns Reinforced by High-Strength Steel Reinforcing Bars and Retrofitted by Fiber-Reinforced Polymer Sheets

Noroozolyaee¹,

Mostofinejad²

2020

ACI Structural Journal

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Comparison Study on Bending Property of High Strength Deformed Bars for Concrete Reinforcement

Cited by 2 publications

References 0 publications

Haloaldehyde polymers. IX. Polybromodichloroacetaldehyde

Haloaldehyde polymers. IX. Polybromodichloroacetaldehyde

Slender Columns Reinforced by High-Strength Steel Reinforcing Bars and Retrofitted by Fiber-Reinforced Polymer Sheets

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