<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Be careful using acids on concrete, especially hydrochloric (also sold as muriatic)! They will dissolve the cement in the concrete and leave a rough surface.<BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Geneva; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Geneva; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Geneva; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV style="; font-family: Helvetica; "><FONT class="Apple-style-span" face="Zapfino"><SPAN class="Apple-style-span" style="font-family: Zapfino; ">Jeff</SPAN></FONT></DIV><DIV style="font-family: Helvetica; "><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN></SPAN></SPAN></SPAN> </DIV><BR><DIV><DIV>On Aug 30, 2006, at 2:14 PM, Marion Cole wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <DIV class="Section1"><P class="MsoNormal"><FONT size="2" color="navy" face="Arial"><SPAN style="font-size: 10.0pt;font-family:Arial;color:navy">I’ve used two different liquids to remove rust from concrete: 1) a solution called triple etch by Martin Senior pants or called Metal Prep by Sherwin Williams. It is an acid (sulfuric or hydrochloric based don’t remember which). You can also get the same type stuff at Home Depot. Look for a solution used to clean Brick fireplaces, brick fascia, etc. Look on label for contents to see if it is an acid based solution. <O:P></O:P></SPAN></FONT></P><P class="MsoNormal"><FONT size="2" color="navy" face="Arial"><SPAN style="font-size: 10.0pt;font-family:Arial;color:navy"><O:P> </O:P></SPAN></FONT></P> <DIV> <DIV class="MsoNormal" align="center" style="margin-bottom:0in;margin-bottom:.0001pt; text-align:center"><FONT size="3" color="black" face="Times New Roman"><SPAN style="font-size:12.0pt;font-family:" times="" new="" roman";color:windowtext"=""> <HR size="2" width="100%" align="center" tabindex="-1"> </SPAN></FONT></DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><B><FONT size="2" color="black" face="Tahoma"><SPAN style="font-size:10.0pt;font-family:Tahoma; color:windowtext;font-weight:bold">From:</SPAN></FONT></B><FONT color="black" face="Tahoma"><SPAN style="font-family:Tahoma;color:windowtext"> syty-bounces@syty.org [<A href="mailto:syty-bounces@syty.org">mailto:syty-bounces@syty.org</A>] <B><SPAN style="font-weight: bold">On Behalf Of </SPAN></B>Larry Brown<BR> <B><SPAN style="font-weight:bold">Sent:</SPAN></B> Wednesday, August 30, 2006 1:07 PM<BR> <B><SPAN style="font-weight:bold">To:</SPAN></B> SyTy List<BR> <B><SPAN style="font-weight:bold">Subject:</SPAN></B> [Syty] Anyone remove concrete rust?</SPAN></FONT><FONT size="3" color="black" face="Times New Roman"><SPAN style="font-size:12.0pt;font-family:" times="" new="" roman";color:windowtext"=""><O:P></O:P></SPAN></FONT></P> </DIV><P class="MsoNormal"><FONT size="2" color="#ffffcc" face="Helvetica"><SPAN style="font-size:10.0pt"><O:P> </O:P></SPAN></FONT></P> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">Anyone:<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">...I`m told there is nothing that removes concrete rust.<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">Unfortunately my driveway has poka-dots and household cleaners do nothing<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">or worse make white bleach stains (and leave the original rust).<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">Even tried a drill pad to work in different solutions, with no help.<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black"> <O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">thought I`d ask<O:P></O:P></SPAN></FONT></P> </DIV> <DIV><P class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt"><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt;font-family:Arial; color:black">Larry<O:P></O:P></SPAN></FONT></P> </DIV><P><FONT size="2" color="black" face="Arial"><SPAN style="font-size:10.0pt; font-family:Arial;color:black"> <O:P></O:P></SPAN></FONT></P> </DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Syty mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:Syty@syty.org">Syty@syty.org</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://lists.syty.org/mailman/listinfo/syty">http://lists.syty.org/mailman/listinfo/syty</A></DIV> </BLOCKQUOTE></DIV><BR></BODY></HTML>