Document Details

Document Type : Article In Journal 
Document Title :
Effect of a Retarding Admixture on the Setting Time.of Cement Pastes in Hot Weather
أثر مخلوط مادة مؤخرة على مدة تثبيت معاجين الإسمنت في الجو الحار
 
Subject : Civil Engineering 
Document Language : English 
Abstract : While concreting in hot weather, both setting time and compressive strength' are adversely affected. To prevent concrete from the adverse effects of hot weather, admixtures are usually incorporated in it. The objective of this. paper is to investigate the effects of a retarding admixture (ASTM C 494 Type D) on setting time of cement pastes. The setting ,time tests were performed under three different curing conditions (temperature & relative humidity). The admixture was added to pastes made from three different types of cements. The test results revealed that the effects of admixture on setting time of cement pastes are dependent upon the type of cement and dosage of the admixture. It caused set retardation of the three different types of cements used, but with one type of cement it accelerated, the initial setting time and retarded the final setting time when dosages higher than 0.250/0 were used. 
ISSN : 1319-1047 
Journal Name : Engineering Sciences Journal 
Volume : 15 
Issue Number : 1 
Publishing Year : 1425 AH
2004 AD 
Number Of Pages : 16 
Article Type : Article 
Added Date : Sunday, October 11, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
بازيد خانBazid KhanResearcher  
محمدالله Muhammad-UllahResearcher  

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