Core Requirement: Visually present the complete mechanism of cement-stabilized macadam strength formation, displaying it in a layered manner according to the logic of "material composition → reaction process → strength cohesion." Use visual elements to distinguish key substances, reaction types, and interactions at each stage, highlighting interfacial effects and the structural densification process. The images must not contain any Chinese or English text. Specific Presentation Elements: 1. Initial Material System: Clearly show the three-phase composition—continuously graded macadam particles (10-30mm in diameter), cement powder, and appropriate amount of water. Differentiate the three phases through differences in shape and color (macadam particles appear as irregular lumps, cement powder appears as fine dispersed particles, and water appears as transparent and flowing). Reflect the packing state of aggregate particles and the dispersed distribution of cement powder. 2. First Stage: Cement Hydration Reaction. Present the process of cement clinker minerals undergoing hydration reaction after water comes into contact with cement particles, generating C-S-H gel and Ca(OH)₂ crystals. Use dynamic arrows to indicate the direction of the reaction. Use a slight heat radiation visual effect to reflect the exothermic characteristics of hydration. Differentiate reactants (cement particles) from products (gel appears flocculent, crystals appear acicular) through morphological differences. 3. Second Stage: Interface Bonding and Skeleton Strengthening. Show the process of C-S-H gel and Ca(OH)₂ crystals adhering to and spreading on the surface of macadam particles, filling the gaps between aggregates. Focus on presenting the bonding state of the gel and macadam particle interface (through the close adhesion visual effect of the substances at the interface), as well as the process of Ca(OH)₂ undergoing a secondary reaction with the active components on the aggregate surface to generate additional cementitious products. Reflect the synergistic effect of "cementation-interlocking" through the interwoven morphology of cementitious products and aggregates. 4. Third Stage: Structural Densification and Strength Formation. Present the state where hydration products continue to generate and interweave into a three-dimensional network structure, firmly cementing the dispersed macadam particles into a whole. Reflect the "pore filling" process through a significant reduction in the number of pores, highlighting the final formed "dense aggregate-cementitious body" overall structure. Imply its compressive/flexural strength characteristics through the dense morphology of the overall structure. Auxiliary Visual Requirements: Use different colors to distinguish each substance (e.g., gray for macadam, light yellow for cement hydration products, light blue for water). Use dynamic arrows to indicate the direction of reaction and material migration. Use regional divisions (e.g., dashed boxes, color gradient transitions) to distinguish each stage. Adopt a three-dimensional cross-sectional perspective to clearly present the correlation between the internal structure and the reaction process.
Core Requirement: Visually present the complete mechanism of...
