نتایج جستجو برای: compressive properties

تعداد نتایج: 885875  

A. Shekari J. Poursharifi M. Rajabi Mehran Seyed. Razzaghi

The influences of nano-ZrO2 (NZ), nano-TiO2 (NT), nano-Fe2O3 (NF) and nano-Al2O3 (NA) additions on properties of the fresh and hardened cement paste in comparison with the fine cement paste were experimentally studied. Mini slump and flow cone tests were conducted on fresh cement pastes. Moreover the compressive and tensile strength of hardened cement paste were measured. SEM micrographs and XR...

Journal: :Journal of biomechanics 2017
Jill M Middendorf Sonya Shortkroff Caroline Dugopolski Stephen Kennedy Joseph Siemiatkoski Lena R Bartell Itai Cohen Lawrence J Bonassar

Many studies have measured the global compressive properties of tissue engineered (TE) cartilage grown on porous scaffolds. Such scaffolds are known to exhibit strain softening due to local buckling under loading. As matrix is deposited onto these scaffolds, the global compressive properties increase. However the relationship between the amount and distribution of matrix in the scaffold and loc...

2000
S. H. LEE ANTHONY M. WAAS

The compressive response of polymer matrix fiber reinforced unidirectional composites (PMC’s) is investigated via a combination of experiment and analysis. The study accounts for the nonlinear constitutive response of the polymer matrix material and examines the effect of fiber geometric imperfections, fiber mechanical properties and fiber volume fraction on the measured compressive strength an...

Journal: :Journal of biomechanics 2013
Terri-Ann N Kelly Brendan L Roach Zachary D Weidner Charles R Mackenzie-Smith Grace D O'Connell Eric G Lima Aaron M Stoker James L Cook Gerard A Ateshian Clark T Hung

The tensile modulus of articular cartilage is much larger than its compressive modulus. This tension-compression nonlinearity enhances interstitial fluid pressurization and decreases the frictional coefficient. The current set of studies examines the tensile and compressive properties of cylindrical chondrocyte-seeded agarose constructs over different developmental stages through a novel method...

Journal: :آب و خاک 0
مهدی دریائی سید محمود کاشفی پور

abstract due to the importance of using clay soil in many constructive projects such as, road foundation, irrigation canals and related hydraulic structures and etc., improvement of the physical and mechanical soil properties has been the main interest of the geo-technique specialists for years. in this regard different methods such as mixing clay soil with lime or cement have been used. it has...

2017
Ingrid Ajaxon Caroline Öhman Mägi Cecilia Persson

Calcium phosphate cements (CPCs) are synthetic bone grafting materials that can be used in fracture stabilization and to fill bone voids after, e.g., bone tumour excision. Currently there are several calcium phosphate-based formulations available, but their use is partly limited by a lack of knowledge of their mechanical properties, in particular their resistance to mechanical loading over long...

In this research, the performance of ultrasonic pulse velocity (UPV) in concrete is examined as a nondestructive experiment in order to estimate mechanical (compressive and tensile strength) and durability (water absorption) properties of fiber-reinforced self-compacted concrete For this purpose 11 mixture designs containing 3 types of fibers (steel: 0.1, 0.2, 0.3 and 0.4 percent by volume, Pol...

Journal: :international journal of civil engineering 0
m. l. li nano-structural materials center, school of materials science and engineering, street of xiao ling wei 200, nanjing 210009,jiang su province, china q. chun-xiang east of ji yin da dao, jiangning,nanjing 211189, z. yong-hao nano-structural materials center, school of materials science and engineering,street of xiao ling wei 200, nanjing 210009,jiang su province, china

it introduced an innovative bioengineering method of consolidating incompact sand by urea-hydrolysis producing calcite cementation under the inducement of urease producing microbe. in the paper it discussed the effects of cementation methods and time on porosity and mechanical properties of microbe-inspired cementing sand columns. method a adopted reaction fluid gravitational permeating and ext...

Journal: :Journal of biomechanics 2005
Chun-Yuh Huang Anna Stankiewicz Gerard A Ateshian Van C Mow

The tensile and compressive properties of human glenohumeral cartilage were determined by testing 120 rectangular strips in uniaxial tension and 70 cylindrical plugs in confined compression, obtained from five human glenohumeral joints. Specimens were harvested from five regions across the articular surface of the humeral head and two regions on the glenoid. Tensile strips were obtained along t...

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