Self Consolidating Concrete

Highly detailed statuary
can be cast using SCC.
Lafarge

Self consolidating concrete (sometimes called self compacting), or SCC, is a dream material for precasters. Not only does it virtually eliminate the need for vibrators, it allows much higher pour rates and fewer workers, results in glassy smooth surfaces, and can provide the finest of details in the casting. SCC is a very high-slump, flowable concrete—but it's not as simple as just adding a dose of water and some high-range water reducer (superplasticizer). A true SCC must also be "stable," meaning that the mix doesn't segregate into paste and aggregate portions.

True SCC requires a mix with higher fines content, low water-cement ratio, a well-graded aggregate blend, and doses of a polycarboxylate high-range water reducer and, usually, a viscosity-modifying admixture (VMA). The mix must be carefully worked out, but once it has been established in a precast plant setting, you should be capable of achieving consistent results. Work with your materials suppliers to develop a mix design and do a lot of experimentation before going live with this. Get more information on SCC.

Self-consolidating concrete is highly flowable
and can spread as much as 30 inches.
Note that there is no segregation or bleeding.