Sticks bridges and most other things together

Sika's SikaDur 31 Rapid, for the technically minded, is a solvent-free, moisture tolerant, thixotropic, structural two part adhesive and repair mortar, based on epoxy resins and special fillers, designed for use at temperatures between +10°C and +30°C.

SikaDur as a structural adhesive is used for:

• Concrete elements
• Hard natural stone
• Ceramics, fibre cement
• Mortar, Bricks, Blocks, Masonry etc.
• Steel, Iron, Aluminium
• Wood
• Polyester, Epoxy
• Glass

As a fast setting repair mortar for:

• Corners and edges
• Hole and void filling
• Joint arrises
• Joint filling and crack sealing:
• Rigid joint filling
• Crack filling and sealing (non moving)

Sikadur-31 Normal has the following advantages:

• Really easy to mix and apply
• Will stick to dry and damp concrete
• Very good at sticking to most construction materials
• High strength adhesive
• Thixotropic: non-sag and suitable for vertical and overhead application
• Solvent free
• No shrinkage when hardened
  
• Different coloured components (for mixing control)
• No primer needed
• High initial and ultimate strengths
• Good abrasion resistance
• Adhesive and filler in one
• Impermeable to liquids and water vapour
• Good chemical resistance

So, it's pretty good and over qualified for DIY jobs! You'll be amazed how impressed your friend will be when you drop into the conversation "...oh, they use it in bridges you know..."!