A mechanism is proposed for the chemical interaction of an organic additive synthesized from the blood of cattle with the mineral components of a composite binder obtained by the joint mechanical activation of Portland cement and broken ceramic bricks. It has been established that the organic additive, interacting with the cations of inorganic components, forms a structure that is built into the frame, which provides plasticizing properties to the cement paste and contributes to the formation of a uniformly distributed fine-grained structure of the cement stone, which acquires increased strength, which is confirmed by the results of physical and mechanical tests. It has been determined that organic additives D-1 and D-2 are products of enzymatic hydrolysis of inedible bones, hooves, wool, and skin of cattle, differing in the time and conditions of hydrolysis. Additive D-3 is a mixture of polypeptides (oligopeptides), the molecular weight of which is less than the molecular weight of the original blood proteins and amino acids, which uses only protein hydrolyzate of cattle blood with a minimum content of sulfur-containing amino acids: cystine, methionine. As a result of hydrolysis, active amino and hydroxyl groups increase, which act as a surfactant; when interacting with water, these groups form a structure with two hydrosilicate groups: NH2 (amino group) and (carboxyl group), which interact with the minerals of Portland cement, cullet ceramic brick and water, binding it with amino groups. Organic additive D-3, interacting with cations of inorganic components, contributes to the formation of a uniformly distributed fine-grained structure of cement stone, which has increased strength, which is confirmed by research.