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calcium chloride in reinforced concrete
i posted this on the concrete admixture forum also, i'm trying to help out a gc who called me in sort of a panic that his concrete contractor had used 1% calcium chloride in the piers for a pre-engineered building. he did this, unbeknownst to the gc, to accelerate the concrete set as he had to repour the piers because they were poured at the wrong height the first time. obviously, the 3/4" dia anchor bolts will have both tension and shear forces (i don't have the numbers yet.) i have thought about using a penetrating corrosion inhibitor, but i am not sure if this is overkill or not. (i have used that remediation process on prestressed concrete parking garages.)
can anyone point me to a reference or give me an idea of what extent of corrosion we may be looking at? possibly a percentage of steel lost vs time?
thanks.
find a job or post a job opening
don't know if this has what you are looking for, but it's a place to start. sika has a total corrosion management section on their website and data sheets on various products for corrosion protection.
like so many questions, the devil is in the details. looks like a 1% concentration could be either unacceptable, or marginally acceptable per a recent edition of aci 318...

2009-09-07, 06:10 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	calcium chloride in reinforced concrete calcium chloride in reinforced concrete i posted this on the concrete admixture forum also, i'm trying to help out a gc who called me in sort of a panic that his concrete contractor had used 1% calcium chloride in the piers for a pre-engineered building. he did this, unbeknownst to the gc, to accelerate the concrete set as he had to repour the piers because they were poured at the wrong height the first time. obviously, the 3/4" dia anchor bolts will have both tension and shear forces (i don't have the numbers yet.) i have thought about using a penetrating corrosion inhibitor, but i am not sure if this is overkill or not. (i have used that remediation process on prestressed concrete parking garages.) can anyone point me to a reference or give me an idea of what extent of corrosion we may be looking at? possibly a percentage of steel lost vs time? thanks. find a job or post a job opening don't know if this has what you are looking for, but it's a place to start. sika has a total corrosion management section on their website and data sheets on various products for corrosion protection. like so many questions, the devil is in the details. looks like a 1% concentration could be either unacceptable, or marginally acceptable per a recent edition of aci 318... __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]