Effect on compressibility

Density and polymer composition have a large effect on compressive strength and modulus (Fig. 3). The dependence of compressive properties on cell size has been discussed (22). The cell shape or geometry has also been shown important in determining the compressive properties (22,59,60,153,154). In fact, the foam cell stmcture is controlled in some cases to optimize certain physical properties of rigid cellular polymers. 

To further clarify the role of magnetic effects on compressibility, a shock compression experiment was performed on an fee 28.5-at. % Ni sample whose initial temperature was raised to 130°C. As is shown in Table 5.1, the compressibility was found to decrease to a value consistent with the nonmagnetic compressibility. Thus, the sharp change in compressibility, the critical values for the transition, and the magnitudes of the compressibility under the various conditions give a clear demonstration that a second-order magnetic transition has been observed, and we will proceed with a quantitative analysis of the transition. 

Certain vegetable and animal fats have been used as dampproofers and again emulsions or pastes are preferred and typical formulations are given in Table 4.3 [10]. The fat can be white grease, tallow or soya bean oil and although they all produce hydrophobic concrete, different effects on compressive strength are obtained. 

Suarez JC, Molleda F, Gu ernes A. Void content in carbon fiber/epoxy resin composites and its effects on compressive properties. In Miravete A, editor. Proceedings of ninth international conference on composite materials (vol VI Madrid). Spain, ICCM-9 Woodhead Publishing Limited, 1993. p. 589-96. 

While considerable work was conducted by Southwest Research Institute (2, 3) to develop sulfur-aggregate mixtures, tests were also conducted on the effects on compressive strength of adding sand to sulfur to determine its utility as a mortar material. Two mortar sands of different particle size distributions were used with the sulfur to produce 1-in. cube compression test specimens. Particle size distributions are presented in Table I. 

Stone PR, Nairn JA, Interfacial toughness and its effect on compression strength in polycarbonate carbon-fiber composites, Polymer Composites, 15(3), 197-205, 1994. 

NR vulcanizates exhibit relatively low (favorable) values of compression set at ambient and somewhat higher temperatures. At lower temperatures, compression set is less favorable, possibly due to a tendency for the rubber to crystallize. At more elevated temperatures, poor heat resistance and cross-link rearrangement can have a detrimental effect on compression set. 

EFFECT ON COMPRESSION SET OF CADMIUM STEARATE ACTIVATION. COMPRESSION SET, ASTM D395 METHOD B, 22 h AT70X (%)... 

Compressive Behavior. Density and polymer composition have a large effect on compressive strength and modulus. In general, compressive strength and... 

Using supeiplasticiser to increase the flow of the concrete had a beneficial effect on compressive strength (Tables 34 and 35). 

Birkinshaw et al. [23] examined y-irradiation effects on compression molded PLLA. Under 10.0 Mrad at a... 

There was a 10% improvement in impact strength upon addition of lidocaine to CMW3 bone cement and it had litde effect on compressive strength, flexural strength, or flexural modulus [1]. 

Calcium chloride increases compressive strength of cement pastes especially at earlier times. The most significant effect on compressive strength occurs with portland blast furnace cement and marginally with portland-pozzolan cement. The compressive strength of cement pastes in the presence of 2% CaCl2 improves by about 50,41,11,9, and 8% overthe reference at 6 hours, 1, 3, 7, and 28 days, respectively.P" ]... 

Table 3.9. The reinforcing effects are the change in Shore A hardness per phr of filler and the change in Modulus at 100% per phr of filler. A good starting point with any filler system is to determine the amount of hardness or modulus gain per amount of filler used. High alkalinity fillers, such as Carplex 1120 and Zeolex 23, have been shown to improve heat resistance in terms of physical property losses, but they have little effect on compression set.

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