sulphate attack on brickwork - wienerberger.co.uk

Post on 12-May-2022

25 Views

Category:

Documents

0 Downloads

Preview:

Click to see full reader

TRANSCRIPT

:DOO�DQG�/DQGVFDSLQJ�HQTXLULHV� ������������� ZZZ�ZLHQHUEHUJHU�FR�XN

:LHQHUEHUJHU�7HFKQLFDO�*XLGDQFH

68/3+$7(�$77$&.�21�%5,&.:25.

6XOSKDWH�DWWDFN� LQ�PDVRQU\� LV�HYLGHQW�E\�KRUL]RQWDO� FUDFNLQJ�ZLWKLQ�PRUWDU� MRLQWV�� DQG� H[SDQVLRQ� RI� PRUWDU� FDXVLQJ� GLVUXSWLRQ� RU� HYHQ�ERZLQJ� RI� EULFNZRUN�� SOXV� FUXPEOLQJ� RI�PRUWDU�� 6XOSKDWH� DWWDFN� RQ�PRUWDUV� LV� YHU\� UDUH� DQG� VORZ� WR� GHYHORS�� EXW� FDQ� EH� FRVWO\� WR�UHPHG\�� ,W� FDQ� EH� DYRLGHG� E\� JRRG� GHVLJQ� DQG� FRQVFLHQWLRXV�ZRUNPDQVKLS��%ULFNV�DUH�DOO� WRR�RIWHQ�VHHQ�WR�EH�WKH�PDLQ�FDXVH�RI�VXOSKDWH�DWWDFN�GXH�WR�WKHLU�ZDWHU�VROXEOH�VXOSKDWH�FRQWHQW�EXW�WKLV�LV�RIWHQ�QRW�WKH�FDVH�

$OO� FOD\� EULFNV� FRQWDLQ� VROXEOH� VDOWV�� DQG� WHVW�PHWKRGV� WR� HVWDEOLVK�WKH� OHYHO� RI� VDOWV� DUH� LQFOXGHG� LQ� WKH� FXUUHQW� (XURSHDQ� 6WDQGDUG����%6� (1� ���-��� 7KHUH� DUH� SUHVFULEHG� OLPLWV� IRU� ZDWHU� VROXEOH�FRPSXQGV�RI�VRGLXP�>1D@��SRWDVVLXP�>.@�DQG�PDJQHVLXP�>0J@��7KH�(XURSHDQ�6WDQGDUG�FODVVLILHV�WKH�ORZHU�OLPLW�RI�WKH�DERYH�VDOWV�DV�6��DQG� D� KLJKHU� OLPLW� DV�6��� $OO�:LHQHUEHUJHU� IDFLQJ� EULFNV� DUH�ZLWKLQ�WKH�ORZHU�OLPLW��6���FDWHJRU\�

$OWKRXJK� WKH� PHDVXUHPHQW� RI� ZDWHU� VROXEOH� VXOSKDWH� LV� QRW� D�UHTXLUHPHQW�RI�%6�(1����-���6��EULFNV�KDYH�D� OLPLW�RI������ZDWHU�VROXEOH�VXOSKDWH� LQ�%6�������ZLWKGUDZQ���&RPSDULQJ� WKLV�ZLWK�QRQ-VXOSKDWH� UHVLVWLQJ� FHPHQWV� ZKLFK� KDYH� EHWZHHQ� ���-��� VXOSKDWH�FRQWHQW��LW�FDQ�EH�VHHQ�WKDW�RWKHU�FRPSRQHQWV�LQ�WKH�ZDOO�PD\�EH�WKH�VRXUFH�RI�VXOSKDWH� LQ�FDXVLQJ�GLVUXSWLRQ�ZLWKLQ�PRUWDU� MRLQWV��%ULFNV�DUH� VRPHWLPHV� WDUJHWHG� DV� EHLQJ� WKH� VRXUFH� RI� VXOSKDWHV�� EXW� DUH�RQH�RI�WKH�VPDOOHVW�FRQWULEXWRUV�RI�VXOSKDWH�ZLWKLQ�PRUWDU�MRLQWV�

6XOSKDWH�DWWDFN�SURFHVV ���

)RU�VXOSKDWH�DWWDFN�WR�RFFXU��WKHUH�QHHGV�WR�EH�

· D�FRQWLQXRXV�LQJUHVV�RI�ZDWHU

· D�VRXUFH�RI�VXOSKDWH

· WUL-FDOFLXP�DOXPLQDWH��&ñ$��LQ�FHPHQW

,I�DOO�WKUHH�DUH�SUHVHQW��D�FKHPLFDO�UHDFWLRQ�ZLOO�WDNH�SODFH�EHWZHHQ�VXOSKDWH�LQ�VROXWLRQ�DQG�WUL-FDOFLXP�DOXPLQDWH�WR�IRUP�DQ�H[SDQVLYH�SURGXFW�FDOOHG�HWWULQJLWH��7KLV�LV�ZKDW�FUDFNV�WKH�PRUWDU�DQG�HIIHFWV�GXUDELOLW\�

���&RQWLQXDO�KHDY\�SHUFRODWLRQ�RI�ZDWHU

���6XOSKDWH�GLVVROYHG

���6XOSKDWHV�DQG�&ñ$�UHDFW

���0RUWDU�FUXPEOHV��H[SDQGV�DQG�FUDFNV

:LWKRXW�DOO�WKUHH�EHLQJ�SUHVHQW��VXOSKDWH�DW�WDFN�ZLOO�QRW�WDNH�SODFH�

����� 5(9��

top related