scholarly journals THE EFFECTS OF REMOVAL TIME OF SHEATHING ON STRENGTH AND DURABILITY OF HIGH-STRENGTH CONCRETE USING MODERATE HEAT PORTLAND CEMENT

2005 ◽  
Vol 70 (589) ◽  
pp. 7-14
Author(s):  
Tatsumi OHTA ◽  
Akira NISHIDA ◽  
Nobuyuki YAMAZAKI ◽  
Yoshihiro MASUDA
Keyword(s):  
Portland Cement ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Removal Time ◽  
Strength And Durability

Effects of Two Polypropylene Fibers on the Properties of High Strength Concrete

2013 ◽  
Vol 357-360 ◽  
pp. 1328-1331
Author(s):  
Bai Rui Zhou ◽  
Dong Dong Han ◽  
Jian Hua Yang ◽  
Yi Liang Peng ◽  
Guo Xin Li
Keyword(s):  
Portland Cement ◽  
Modulus Of Elasticity ◽  
High Strength Concrete ◽  
Polypropylene Fiber ◽  
High Strength ◽  
Polypropylene Fibers ◽  
Strength Concrete ◽  
Reticular Fiber ◽  
Binder Ratio ◽  
Water To Binder Ratio

Portland cement, crushed stone, sand and superplasticizer were used to obtain a high strength concrete with a low water to binder ratio. A reticular polypropylene fiber and a single polypropylene fiber were used to improve the strength of the high strength concrete, but the effects of the two fibers on the slump and strengths were quite different. The reasons of the differences were the surface area and the modulus of elasticity of the fibers. The results show the reticular fiber was better to used in high strength concretes.

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