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xhshen 发表于 2012-10-26 13:31 
谢谢!我还想知道大概的费用。
• Clean out loose deposits from the crack with air jet or brush
• Fill / seal the crack 3-5mm deep with builders bog or mortar
• Drill 6.5mm dia holes and install suitable injection nipples into crack at 30mm deep, one in the centre of each brick or 35mm centres, depending on size, length of crack and type of brick, extruded or common.
• Inject the crack with epoxy resin such as Crack Bond TE2 from Helifix or an approved equivalent. Start from the lowest nipple filling until the epoxy escapes from the adjacent nipple, close first injection nipple and fill crack from the 2nd, then repeat.
• Remove the nipples after 24hours and fill the holes with mortar
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