Abstract
Theoretical analysis of the strength of materials consisting of particles joined along contact areas small in relation to particle size resulted in the model where p denotes strength, D particle size, γ surface energy, d linear extent of the contact area, E modulus of elasticity for the particles, and θ porosity. The first factor has the same form as the Griffith model except that particle size is substituted for crack size; it shows that strength increases inversely with the square root of particle size. The model can be used as a guide in the design of materials such as mortars with low cement content, sand-lime bricks, soil stabilizers, and sintered products. The strengths of mortars made from finely ground quartz and cement and cured at high temperatures were 4 to 40 times higher than those of normal mortars with the same cement/water ratio.
Published Version
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