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- Blinding | Eng-Tips
Agree that blinding concrete (or what I call a mudmat) is a good idea many times for ease in setting formwork and steel, to prevent damage of the founding soil in case of rain or just construction (workmen) damage You could use a good crushed stone layer as well
- underlays to concrete: blinding, poly sheet, sand | Eng-Tips
Hello all Can anyone advise the different uses of blinding concrete, polythene sheeting and sand as underlays for various concrete structures poured on ground? This is for Australian conditions I have always used whatever standard drawings were to hand but now I find myself working for a firm
- Blinding Concrete - Specified Grade | Eng-Tips
I have a question of all you experienced structural (foundation) and geotechnical engineers For the project on which I am currently working, there are two grades of PCC (plain cement concrete) specified for blinding mats underneath all foundations One is called M10 (requiring 10MPa cube
- blinding concrete removal | Eng-Tips
Good day, the contractor is proposing to remove the blinding concrete under the slab on grade and replace it by a layer of tout venant of 200mm thickness After compaction, he will place the vapor barrier then the steel bars My only concern is that i am worried for the vapor barrier since
- Blind concrete ? | Eng-Tips
Hi, I'm curious why we have to put the blind concrete underneath the spread footing or ground slab? It jsut for protect the debris from soil to mix with fresh concrete Is it neccessary to have other layer of compacted sand under the blind concrete Please share your opinion
- Set times of concrete | Eng-Tips
Set and cure times are also reflected in minimum times required before striking the form work There is a requirement especially for marine structures to prevent the ingress of water during the hydration process, hence the use of water tight materials for shuttering, and blinding concrete for a foundation structural base
- Concrete cover | Eng-Tips
In case of lean concrete seal coat , ( blinding layer ) this will give a level surface for placing reinforcement and protect reinf from dirt The term ' blinding layer' is meaningful that is , blinding the surface to get a clean working environment In German , this is called 'Sauberkeitsschicht' which could be translated as ' cleanliness layer '
- Unreinforced concrete shear | Eng-Tips
I wold second MIStructE's opinion that blinding should not provide any shear resistance These concrete mixes usually lack the large aggregate that provides shear resistance due to interlock
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