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Re: Beach Sand

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Nor, in my opinion, should it be used as a compacted fill below R.C. slabs
on grade.

Hasan Hindawi, S.E.

----- Original Message -----
From: Dr. Ravi Sinha <rsinha(--nospam--at)civil.iitb.ernet.in>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, 15 December, 1999 8:36 PM
Subject: RE: Beach Sand


>
> Since nobody else has mentioned it, I think I will clarify.  Beach
> sand, no matter how well washed, should NOT be used for concreting.
> There are other problems also associated with washing, such as loss
> of fines etc. that may be difficult to overcome.  In any case, the
> salts can not be removed simply by washing the sand, and washed
> sand is not good enough for concreting.
>
> In some peculiar situations, I have heard of neutralising chemicals
> added to the sand after "washing".  Don't know how good the long-term
> performance has been.  But I will be extremely surprised if the
> performance is similar to that of river sand.
>
> I have seen examples of structures with SEVERE corrosion a couple of
> years after construction when sea or creek sand has been used.
>
> Hope this helps.
>
> Dr. Ravi Sinha
>
> On Wed, 15 Dec 1999, Murat ERBAS wrote:
> > IF YOU ABLE TO WASH THE SAND WITH CLEAN WATER, YOU CAN USE AS FINE.
> > -----Original Message-----
> > From: Ivan Lippi [SMTP:ilippi(--nospam--at)dialdata.com.br]
> > Sent: 15 Aralyk 1999 Car?amba 02:49
> > To: seaint(--nospam--at)seaint.org
> > Subject: Re: Beach Sand
> >
> > Sea salt is quite deleterious to cement. I wouldn' t try if I were you.
> >
> > Ivan Lippi
> >     -----Mensagem original-----
> >     De: Alex Nacionales <alexcnac(--nospam--at)skyinet.net>
> >     Para: seaint(--nospam--at)seaint.org <seaint(--nospam--at)seaint.org>
> >     Data: Terca-feira, 30 de Novembro de 1999 19:57
> >     Assunto: Beach Sand
> >
> >
> >     I have a low cost housing (single story) project near a beach.
> >     Can dry beach sand be used as fine aggregate. I would appreciate
comments from those of
> >     you who have experience on the subject.
> >
> >     Thanks in advance.
> >
> >
> >     Alex C. Nacionales, C.E.
>
> --------------------------------------------------------------------------
----
> Ravi Sinha, Ph.D. email: rsinha(--nospam--at)gemini.civil.iitb.ernet.in
> Associate Professor        rsinha(--nospam--at)civil.iitb.ernet.in
> Department of Civil Engineering        Phone: (91-22)-576-7336, 576-7301
> IIT, Powai, Mumbai - 400 076, India    Fax: (91-22)-578-3480, 578-3557
>
>
>