Cracking mode and shear strength of lightweight concrete beams

... CRACKING MODE AND SHEAR STRENGTH OF LIGHTWEIGHT CONCRETE BEAMS KUM YUNG JUAN (B.Eng (Hons.) Malaya) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL AND ENVIRONMENTAL ... Properties of Lightweight Concrete 23 2.4.1 Compressive Strength of Lightweight Concrete 23 2.4.2 Modulus of Elasticity and Poisson’s Ratio 25 2.4.3 Te...

Ngày tải lên: 10/09/2015, 15:48

... Gravity and Absorption of Fine Aggregate BATCHING, MIXING, AND JOB CONTROL OF LIGHTWEIGHT CONCRETE C 138 C 143 C 172 C 173 C 231 C 330 C 567 Standard Test Method for Unit Weight, Yield, and Air ... changes in the amount of water needed to produce the desired slump 3.2.1 Transportation and waiting time Construction BATCHING, MIXING, AND JOB CONTROL OF LIG...

Ngày tải lên: 24/10/2014, 17:44

... ng thép nh i bê tơng ch u nén úng tâm Aa, Ac : di n tích m t c t ngang ng thép lõi bê tơng Ia, Ic : mơmen qn tính c a ti t di n ng thép ti t di n lõi bê tơng Ea, Ec : mơ un àn h i c a thép bê ... nhi u ng thép tròn c nh i bê tơng liên k t v i b ng b n thép (hình 5) ng thép c ch t o t thép t m theo ph ng pháp cu n tròn hàn d c ho c cu n d ng lò xo Hi u qu làm vi c c...

Ngày tải lên: 04/04/2014, 11:16

... Effect of high temperature fluidized drying and tempering on head rice yield and mechanical strength of Vietnamese rice varieties Introduction Being as a major exporter of rice all over ... knowledge on the effect of high temperature drying and tempering on head rice yield, fissured kernels, mechanical strength and quality...

Ngày tải lên: 21/06/2014, 06:20

... to the calculated Tabor parameter, the JKR model was selected to approximately calculate the contact area and the interfacial shear strength The interfacial shear strengths between silver NW and ... The contact radius, contact pressure and interfacial shear strength calculated using the two models are listed in Table It can be seen that the interfacial shear...

Ngày tải lên: 22/06/2014, 00:20

... been reported that lumber from young loblolly and slash plantations are much weaker in strength and stiffness than lumber from older natural stands and that lumber from young plantations does not ... values of LVL from the 28- and 40-year-old natural stands, respectively Similarly, the average MOE of LVLs of the 20-year-old plantation is only 73% and...

Ngày tải lên: 08/08/2014, 18:21

... STANDARD EN 205 NORME EUROPÉENNE EUROPÄISCHE NORM March 2003 ICS 83.180 Supersedes EN 205: 1991 English version Adhesives - Wood adhesives for non- structural applications Determination of tensile shear ... thermoplastic wood adhesives for non- structural applications EN 923:1998, Adhesives —Terms and definitions EN 12765, Classification of the...

Ngày tải lên: 30/08/2014, 11:14

... mechanisms of shear transfer: 1) shear stresses in uncracked concrete, that is, the flexural compression zone; RECENT APPROACHES TO SHEAR DESIGN OF STRUCTURAL CONCRETE 445R-27 Fig 4.3—Comparison of Walraven’s ... effects of axial loading and the contribution from vertical stirrups Vs RECENT APPROACHES TO SHEAR DESIGN OF STRUCTURAL CONCRETE 445R-5 Fig...

Ngày tải lên: 24/10/2014, 17:26

... magnitude 10 is allowed to aect the controlled signals A PWM Modulation GPI Control Approach The control of switched systems via PWM actuators constitutes a vast area of applications with a sucient ... Generalized PI Sliding Mode and PWM Control 211 PWM Control Trajectory Tracking for a Switched Heating Radiator System Consider the same fractional...

Ngày tải lên: 01/07/2015, 09:18

... from restraint of thermal contraction A detailed discussion of the effects of heat generation and volume changes on the design and behavior of mass reinforced concrete elements and structures ... generation The rate and magnitude of heat generation of the concrete depends on the amount per unit volume of cement and pozzolan (if any), the compound composit...

Ngày tải lên: 24/10/2014, 17:26

... Information and Learning Company 300 North Zeeb Road P.O Box 1346 Ann Arbor, MI 48106-1346 PREDICTION OF SHEAR STRENGTH AND VERTICAL MOVEMENT DUE TO MOISTURE DIFFUSION THROUGH EXPANSIVE SOILS A Dissertation ... expansive soils (Wheeler and Karube, 1996) According to the states of pore air and pore water, expansive soils can be divided into differe...

Ngày tải lên: 13/11/2014, 10:45

Ngày tải lên: 14/11/2014, 11:16

... Restrained Shrinkage cracking parameters Fig 1.2 Factors affecting shrinkage cracking of concrete Mechanical and Deformational Properties, and Shrinkage Cracking Behaviour of Lightweight Concretes ... shrinkage rate @ cracking and age of cracking for LWAC 225 Fig 5.17 Relationship between shrinkage rate at cracking and age of cracking: Compar...

Ngày tải lên: 11/09/2015, 09:07