Concrete Technology: A South African Handbook |
From inside the book
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Page 77
... sand and stone are obtained separately from different sources , and often alternative supplies of one or the other material are available . This necessitates the comparison of one fine or coarse aggregate with another on a basis not ...
... sand and stone are obtained separately from different sources , and often alternative supplies of one or the other material are available . This necessitates the comparison of one fine or coarse aggregate with another on a basis not ...
Page 92
... sand . Other large areas possess sand deposits of poor quality . In particular , sands derived from shales and sandstones of the Stormberg , Beaufort , and Ecca Series are to be found over an area of 50 per cent of the Republic . Many ...
... sand . Other large areas possess sand deposits of poor quality . In particular , sands derived from shales and sandstones of the Stormberg , Beaufort , and Ecca Series are to be found over an area of 50 per cent of the Republic . Many ...
Page 627
... sand to be tested . Empty the sand into a receptacle so that none will be lost . Pour about 3 in . of water into the container and replace the sand slowly , stirring slightly to expel the air , keeping the water level just above the sand ...
... sand to be tested . Empty the sand into a receptacle so that none will be lost . Pour about 3 in . of water into the container and replace the sand slowly , stirring slightly to expel the air , keeping the water level just above the sand ...
Common terms and phrases
28-day strength applied bars batch beams bond building bulk density calcium calcium carbonate calcium chloride carbon dioxide carbonate cement content cement paste cement ratio cent clinker coarse aggregate coefficient coefficient of variation compaction compressive strength concrete mix construction containing cracking crushing strength cubes cubic yard curing curve Duff Abrams effect elastic modulus Engineer factors formwork fresh concrete grading grading curves hydration increase joints lime load materials maximum measured method minimum mix design mixer modulus moisture content mortar mould normal portland cement particles permeability placing plastic pozzolanic prestressed prestressed concrete Proc properties proportions reduced reinforced concrete sample sand shown shrinkage shrinking aggregates sieve slabs slump specific surface standard deviation steel stone strength of concrete stress structure sulphate Table temperature tensile stress test cubes variation vibration volume walls water content water demand water ratio weight workability