Shear resistance testing

Both peel adhesion and shear resistance tests utilize tape specimens, while tack testing can be performed on specimens in other shapes as well as on tapes. In peel and shear tests a stainless steel panel with a specified surface roughness is used as a test surface. ... 

The largest volume of hydrauHc fluids are mineral oils containing additives to meet specific requirements. These fluids comprise over 80% of the world demand (ca 3.6 x 10 L (944 x 10 gal))- In contrast world demand for fire-resistant fluids is only about 5% of the total industrial fluid market. Fire-resistant fluids are classified as high water-base fluids, water-in-oil emulsions, glycols, and phosphate esters. Polyolesters having shear-stable mist suppressant also meet some fire-resistant tests. 

After tires are placed and fastened in designated construction area, various types of materials could be used to fill up voids in the structure for providing the required weight to overcome uplifting. Bases on laboratory direct shear strength tests and hydraulic resistance experiments [4], three types of fillings are recommended construction rubble, sand and gravel, and flowable mixture of loess, cement, and sand. 

Vane Shear Test This test measures the shear resistance of soils. It consists of forcing a vane with four orthogonal blades into the soil and rotating it until the soil fails. The maximum torque value is measured. 

The quick shear test value of soft clay was that c was 5.5 kPa and frictional angle was 5.00 the average shearing resistance strength of soft clay layer was 12 kPa the shearing resistance strength of jet grouting pile was 0.18 MPa. When all above parameter got into... 

In order to gain some knowledge about the degradation of the adhesive layer during the delamination test, the specimens which successfully passed the test were further tested in compression shear (Fig. 24). For these tests, blocks with a cross section of 50 by 50 mm were cut out of the tested specimens. As a control, specimens of a similar size were cut from the part of the original sample which had not been subjected to the delamination tests. The compression shear tests conhrmed that the five adhesive layers which passed the delamination tests did not suffer any degradation during the harsh treatment. Their shear resistance was hardly reduced after the harsh delamination tests. 

Load-displacement curves observed by testing virgin and crosslinked UHMWPE in shear punch apparatus. Curves are quite similar, suggesting that changes in shear resistance are unlikely to explain the increased resistance to wear exhibited by crosslinked UHMWPEs. Materials tested were virgin GUR 1050 and GUR 1050 irradiated to 75 kGy and annealed at tempreratures below the melt point. (Adapted from Kurtz et al. 2002.)... 

For practical reasons most past specimens had low aspect ratio, not typical of multi-storey, slender walls used in practice. As the behavior and failure mode even of monolithic squat walls is normally governed by shear, most past RC-infilled frame specimens had inherently low ductility, ultimate deformadmi and energy dissipation capacity. The small thickness of the RC infill in past tests with respect to the width of frame members further penalized shear resistance of the composite wall and the web-frame connection. 

The present paper studies experimentally the seismic behavior of multistorey, nonductUe RC frames, infilled with an RC web which has the same thickness as the frame members and is connected to them in a code-conforming way. The aim is to achieve a ductile, macroscopically monolithic behavior, which would allow to simplify the design, the modeling and the verifications of the composite new member by considering it as a monolithic, flexure-controlled wall. The composite walls tested have aspect ratio (slenderness) over 3.0. So, they represent better the multistorey, slender, flexure-critical walls of current practice than the test specimens of the past and do not suffer from low shear resistance due to a thin web. 

---