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Abstract In order to explore the influence of clinker particle size distribution and mineral composition on the cracking resistance of Portland cement, the effects of clinker particle size distribution and mineral composition on the working performance, hydration performance, mechanical property, drying shrinkage and cracking resistance performance of cement-based materials were explored systematically. The results showed that with the increase of fine powder content of cement clinker, the water requirement of normal consistency of cement increased, the setting time shortened, water loss ratio was decreased, dry shrinkage and the crack risk of cement increased. With the decrease of C3S content and the increase of C2S content in the cement clinker, the water requirement of normal consistency of cement had no significant changes, the setting time was lengthened, the early hydration active and strength were reduced, later strength could improve steadily, the water loss ratio was increased and dry shrinkage was decreased. Finally, it is suggested that when manufacturing crack resistance Portland cement, the D10 of clinker was best to be controlled 5~7 μm, the D90 was suitable to 45 μm approximately, C3S and C2S content of clinker were satisfactory to be controlled 40%~60% and 10%~30%, respectively.
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Published: 26 September 2023
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2023, Vol. 0 
