JPS643039A - Chemical admixture for concrete - Google Patents

Chemical admixture for concrete

Info

Publication number
JPS643039A
JPS643039A JP15873787A JP15873787A JPS643039A JP S643039 A JPS643039 A JP S643039A JP 15873787 A JP15873787 A JP 15873787A JP 15873787 A JP15873787 A JP 15873787A JP S643039 A JPS643039 A JP S643039A
Authority
JP
Japan
Prior art keywords
calcium
chemical admixture
admixture
thiocyanate
nitrite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15873787A
Other languages
Japanese (ja)
Other versions
JP2508101B2 (en
JPH013039A (en
Inventor
Shigekatsu Kobayashi
Akio Fukazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Chemical Corp
Original Assignee
Nissan Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Chemical Corp filed Critical Nissan Chemical Corp
Priority to JP15873787A priority Critical patent/JP2508101B2/en
Publication of JPS643039A publication Critical patent/JPS643039A/en
Publication of JPH013039A publication Critical patent/JPH013039A/en
Application granted granted Critical
Publication of JP2508101B2 publication Critical patent/JP2508101B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: To obtain the titled chemical admixture by incorporating an amidosulfonate in the original admixture containing calcium thiocyanate and calcium nitrite to prevent generation of toxic NOx and hydrogen cyanide gas even contaminated with any strong acid by accident.
CONSTITUTION: The objective chemical admixture can be obtained by incorporating (A) the original admixture containing calcium thiocyanate and calcium nitrite (and aminoalcohol) with (B) an amidosulfonate. The amount of the calcium nitrite is pref. ≥0.8mol. per mole of the calcium thiocyanate. When this chemical admixture is contaminated with a strong acid, a reaction occurs quantitatively between the calcium nitrite and the aminosulfonic acid to generate N2 gas Because of no generation of NOx, the calcium thiocyanate little decomposes, thus generating no hydrogen cyanide gas. Furthermore, this chemical admixture gives cure accelerability comparable to that of calcium chloride.
COPYRIGHT: (C)1989,JPO&Japio
JP15873787A 1987-06-25 1987-06-25 Admixture for concrete Expired - Lifetime JP2508101B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15873787A JP2508101B2 (en) 1987-06-25 1987-06-25 Admixture for concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15873787A JP2508101B2 (en) 1987-06-25 1987-06-25 Admixture for concrete

Publications (3)

Publication Number Publication Date
JPS643039A true JPS643039A (en) 1989-01-06
JPH013039A JPH013039A (en) 1989-01-06
JP2508101B2 JP2508101B2 (en) 1996-06-19

Family

ID=15678233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15873787A Expired - Lifetime JP2508101B2 (en) 1987-06-25 1987-06-25 Admixture for concrete

Country Status (1)

Country Link
JP (1) JP2508101B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614860B1 (en) * 1993-03-12 1999-07-07 W.R. Grace & Co.-Conn. Corrosion inhibiting composition for reinforced concrete and method of applying same
JP2007001828A (en) * 2005-06-24 2007-01-11 Construction Research & Technology Gmbh Foaming agent for cement composition, cement composition containing the same, method for preventing shrinkage of cement composition and use of foaming agent for cement composition
JP2018095516A (en) * 2016-12-14 2018-06-21 花王株式会社 Hydraulic composition for centrifugal molding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614860B1 (en) * 1993-03-12 1999-07-07 W.R. Grace & Co.-Conn. Corrosion inhibiting composition for reinforced concrete and method of applying same
JP2007001828A (en) * 2005-06-24 2007-01-11 Construction Research & Technology Gmbh Foaming agent for cement composition, cement composition containing the same, method for preventing shrinkage of cement composition and use of foaming agent for cement composition
JP2018095516A (en) * 2016-12-14 2018-06-21 花王株式会社 Hydraulic composition for centrifugal molding

Also Published As

Publication number Publication date
JP2508101B2 (en) 1996-06-19

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