In this paper,the slip phenomenon(negative slip phenomenon) of coal-water mixture flowing in pipes is proved by the method of combining theoretical analyses with experimental investigations for the first time. On the ...In this paper,the slip phenomenon(negative slip phenomenon) of coal-water mixture flowing in pipes is proved by the method of combining theoretical analyses with experimental investigations for the first time. On the basis of analyzing the mechanism of slip flow phenomenon,a real rheological model of coal-water mixture is determined by correcting the influence of the slip.展开更多
Influence of ultrafine active mineral (DK mineral) on mechanical property of fly ash based load bearing aerocrete was analyzed. The result shows that the addition of DK mineral in a suitable amount can enhance obvious...Influence of ultrafine active mineral (DK mineral) on mechanical property of fly ash based load bearing aerocrete was analyzed. The result shows that the addition of DK mineral in a suitable amount can enhance obviously the compressive strength of aerocrete. According to the SEM EDS and X ray diffraction analyses, the crystal shapes of hydration products are well developed and interlocked for samples containing DK mineral. Its microstructure is denser than that of the samples without DK mineral. Having a good activation, the DK mineral makes both the type and the quantity of hydrated products be obviously superior to that of the contrast sample.展开更多
文摘In this paper,the slip phenomenon(negative slip phenomenon) of coal-water mixture flowing in pipes is proved by the method of combining theoretical analyses with experimental investigations for the first time. On the basis of analyzing the mechanism of slip flow phenomenon,a real rheological model of coal-water mixture is determined by correcting the influence of the slip.
文摘Influence of ultrafine active mineral (DK mineral) on mechanical property of fly ash based load bearing aerocrete was analyzed. The result shows that the addition of DK mineral in a suitable amount can enhance obviously the compressive strength of aerocrete. According to the SEM EDS and X ray diffraction analyses, the crystal shapes of hydration products are well developed and interlocked for samples containing DK mineral. Its microstructure is denser than that of the samples without DK mineral. Having a good activation, the DK mineral makes both the type and the quantity of hydrated products be obviously superior to that of the contrast sample.