In this paper,we make the carbon fiber concrete of different volume quantities(0.0%、0.2%、0.4%、(0.8% and) 1.2%)and compare that conductance capability,with the test sample being a cube of 100mm×100mm×100mm.
The rock salt loaded by 7.0 MPa shows a higher creep ratio,which is 2.38×10-4 d-1,while the creep ratio of the sample loaded by 4.0 MPa is 3.77×10-5 d-1,which is only 15.87% of the former; (3) under different stresses,i.
After standard curing the compressive strength and density of the gas-carrier cellular concrete will respectively be 5. 0～7. 0 MPa(10cm×10cm×10cm sample)and 700～900 kg/m3, while those of gas-carrier cellular light-weight aggregate concrete will correspondingly be 12.0-14. 0 MPa and 900-1000kg/m3. Gas-carrier natural zeolite can react with cementing material.
Test research on heat transfer and flow resistant performance has been carried out on acicular tube test piece of three new types,and characteristics of heat transfer and flow which in the range of Re m is 4.5×10 3～7.0×10 4 are given.
The principle, testing apparatus, test piece preparation, experimemtal method tooth results are reported, by using laser speckle interferometry for measurement of human and elastic modulus, the issues encountered and the measures taken to improve the measurement accuracy are digcsnsed.
The volatile pyrolytic products of basswood (Tilia amurensis) specimens treated with FRW and its components guanylurea phosphate and boric acid were analyzed by GC-FTIR.
Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the action of symmetric wedge
To improve the machining precision of part surfaces and to facilitate tool design and cutting parameter selection, the initiation and propagation laws of glass cracks in specimens subjected to normal loading by symmetric wedges were investigated.
The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30°-120°.
The cyclic stress-strain of DD3 notched specimens under asymmetrical loading at 680°C was analyzed.
In the range of fiber-powder ratios necessary to obtain unraveled fiber, the total number of exposed fibers in the cross-section of the molded test piece was proportional to the initial fiber concentration in spite of the degree of dispersal.
This paper describes the method used to prepare the mini-LVL test pieces and the results of multivariate regression of NIR spectra with the test piece stiffness.
The present experiments were prompted by these observations and were so designed that the metal test piece could be subjected to small amounts of torsional microcreep during the course of longitudinal fatigue stressing.
A small pyramid shaped test piece was used to compare the fixation capacity of the socket spike.
Also, a special test piece was used to study the time of bone formation, to check the fixation capacity of bone bar formation occurring in the hole in the based part of the prosthetic component.