Some factors affecting the dynamic modulus of elasticity of high strength concrete

The mechanical properties of high strength concrete(HSC) were experimentally investigated under mixed erosion and freeze-thaw cycling according to ASTM C666(Procedure B), the erosion solution was mixed by weight of 3% sodium chloride and 5% sodium sulfate. The mass loss, relative dynamic modulus of elasticity, compressive strength, elastic modulus and other relative data were measured. The results showed that with the increasing number of freeze-thaw cycles, the surface scaled more seriously; the mass loss, compressive strength and elastic modulus continued to decrease; the relative dynamic modulus of elasticity increased slightly in the first 225 freeze-thaw cycles, then decreased in the following 75 cycles; the corresponding strain to peak stress decreased with the increase of freeze-thaw cycles. After 200 cycles, the rate of deterioration of concrete accelerated obviously.

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Study on Durability of C100 Concrete in Shenyang Royal WAN XIN Hotel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.405-406.19 ◽

2009 ◽

Vol 405-406 ◽

pp. 19-23

Author(s):

Da Li Zhang ◽

Yuan Wang ◽

Cui Hong Chen

Keyword(s):

Mechanical Properties ◽

Modulus Of Elasticity ◽

Dynamic Modulus ◽

High Strength Concrete ◽

Evaluation Method ◽

Chloride Ion ◽

High Strength ◽

Test Results ◽

Strength Concrete

Durability of C100 concrete in Shenyang WAN XIN Hotel engineering including long-term mechanical properties, dynamic modulus of elasticity, and chloride ion resistance was tested and analyzed. Test results appeared that C100 concrete had very good density and extremely good durability. Simultaneously we suggest improving the evaluation method to test the durability of super-high strength concrete in order to enhance the evaluation level effectively. It will provide one according of durability to apply super-high strength concrete.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.357-360.1328 ◽

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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Properties of High Strength Concrete with Calcined Diatomaceous Earth as Cement Replacement under Compression

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.402.7 ◽

2020 ◽

Vol 402 ◽

pp. 7-13

Author(s):

Muttaqin Hasan ◽

Aris Muyasir ◽

Taufiq Saidi ◽

Husaini ◽

Raudha Azzahra

Keyword(s):

Compressive Strength ◽

Modulus Of Elasticity ◽

High Strength Concrete ◽

Diatomaceous Earth ◽

High Strength ◽

Compression Load ◽

Strength Concrete ◽

Cement Replacement ◽

Concrete Mixtures ◽

Compressive Strength Of Concrete

In this research, calcined diatomaceous earth from Aceh Besar, Indonesia was used as cement replacement in producing high strength concrete. Four concrete mixtures in which the percentage of cement replacement of 0%, 5%, 10% and 15% by weight were studied. Four cylinder-specimens with 100 mm diameter and 200 mm high were prepared for each mixture. The compression load was applied on the specimens at the age of 28 days until the specimens failed. The mixture without calcined diatomaceous earth was more workable than that with diatomaceous earth. The compressive strength of concrete with diatomaceous earth in this study was almost the same for all mixture. However, those compressive strength was lower than the compressive strength of concrete without calcined diatomaceous earth for about 14.6%. Modulus of elasticity of high strength concrete decreased with increasing of cement replacement percentage.

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