Pozzolans are used in combination with binding materials to improve the workability, mechanical and durability properties of concrete and decrease its cost.
How is
Pozzolan planning to achieve this ambitious target?
In a view to producing a
pozzolan (supplementary cementing material), nearly complete dehydroxylation must be reached without overheating, i.
The plants with the largest number in mini-tubers are those of T4 substrate composed of peat +
pozzolan, which gives up to 11 mini-tubers per plant, followed by T1 treatment with a number of 09 mini-tubers per plant.
Use of
pozzolans is effective against ASR expansion owing to pozzolanic reaction and reduction in alkali content (Tuthill, 1982).
Keywords: Agriculture Structures, diatomite, light-weight aggregate, light-weight concrete,
pozzolan.
Pozzolan is a fine inorganic material composed mainly by rich siliceous or silico-aluminous amorphous phases, which itself possess lower or no binder properties, but in the presence of water, at ordinary temperature and pressure, will chemically react with calcium hydroxide to produce compounds with binder properties.
18] ASTM C618-08a, "Standard Specification for Coal Fly Ash and Raw or Calcined Natural
Pozzolan for Use in Concrete", West Conshohocken, PA, American Society for Testing and Materials, 2008.
The purified mineral matter that is being produced at Winyah is 100% inorganic and meets ASTM C-G18 "Standard Specification for Coal Fly Ash and Raw or Calcined Natural
Pozzolan for Use in Concrete.
Engineering Properties of Amorphous Silica as a New Natural
Pozzolan for Use in Concrete, Cement Concrete Research 35(7): 1251-1261.
In fact, construction industry in Saudi Arabia can benefit immensely by using our natural
pozzolan.
Pozzolan materials such as ground granulated blast furnace slag (GGBS), fly ash (FA), silica fume (SF) and natural
pozzolan have been used successfully as substituting materials for Portland cement.
