Some Aspects of the Proposed Iraqi Reinforced Concrete Code

Alani, A F; Jena, Biswajit

doi:10.1007/978-1-349-07225-5_18

Cited by 1 publication

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“…Then, the cooling phase of the model starts gradually by opening the oven door very slightly to allow heat exchange with the laboratory temperature to the next day [11]. The Attapulgite samples burned to the temperatures ranged between (550-800) ˚C.When heat is firstly applied, the absorbed water is removed and, as the temperature increased, the interlayer and hydrated water removed too [12]. Table 5 shows the chemical analysis of Attapulgite after burning.…”

Section: Preparation Of Local ( Hra )mentioning

confidence: 99%

Investigate About the Iraqi Attapulgite Clay as a Mineral Admixture for Concrete

Frieh¹,

Abbas²,

Malik³

2014

ETJ

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Tremendous research efforts have been directed to investigate the possibility of using the Iraqi Attapulgite clay as a mineral admixture to improve some properties of concrete. To investigate about this clay as a pozzolan, many experimental work need to be done to find the suitable conditions of temperature and time of calcinations. To study the influence of calcinations temperature, different samples of Attapulgite were prepared.The samples were grinded to fineness 2109 m 2 / kg , then burned to ( 550 , 600 , 650 , 700 , 750 , 775 and 800)˚C at 1/2 hour , respectively . According to the American Standard Specifications, the strength activity index was conducted on the cubic specimens with dimensions (50 * 50 * 50) mm. The results showed that the optimum calcinations temperature was 750 ˚C. The Attapulgite samples were prepared at ( 1/2 , 1 , 1 1/2 , 2 ) hours , respectively and the temperature was 750 ˚C , then strength activity index was conducted . The results showed that the optimum calcinations time was 1/2 hour.

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Section: Preparation Of Local ( Hra )mentioning

confidence: 99%