The present disclosure discloses a self-curing fluid solidified soil composite curing agent and its application, which is composed of the following raw materials by mass percentage: 30-35% of cement, 10-20% of slag, 10-20% of gypsum, 5-8% of calcium carbide slag, 30-39% of microbial curing agent, 1-5% of self-curing microbeads. The present disclosure can effectively improve the compressive strength of the fluid solidified soil while ensuring the early fluidity of the fluid solidified soil, inhibit the shrinkage deformation of the fluid solidified soil, and improve the durability of the fluid solidified soil. The present disclosure improves the recycling rate of solid waste resources and has the characteristics of low cost and remarkable environmental protection effect under the premise of ensuring the application effect, which is suitable for large-scale promotion and application.

A method for placement of roller compacted concrete (RCC) on a sub-base to produce a concrete pavement, which has: (a) dosing a concrete or concrete ingredients and loading the concrete or concrete ingredients into a concrete transportation truck, (b) adding at least one pelletizing agent to the concrete and waiting from 3 to 15 minutes under constant mixing to produce a pelletized concrete and (c) discharging the pelletized concrete obtained in step (b) on the sub-base from the concrete transportation truck, rotating the drum of the concrete transportation truck.

A method for placement of roller compacted concrete (RCC) on a sub-base to produce a concrete pavement, which has: (a) dosing a concrete or concrete ingredients and loading the concrete or concrete ingredients into a concrete transportation truck, (b) adding at least one pelletizing agent to the concrete and waiting from 3 to 15 minutes under constant mixing to produce a pelletized concrete and (c) discharging the pelletized concrete obtained in step (b) on the sub-base from the concrete transportation truck, rotating the drum of the concrete transportation truck.

The present disclosure discloses a self-curing fluid solidified soil composite curing agent and its application, which is composed of the following raw materials by mass percentage: 30-35% of cement, 10-20% of slag, 10-20% of gypsum, 5-8% of calcium carbide slag, 30-39% of microbial curing agent, 1-5% of self-curing microbeads. The present disclosure can effectively improve the compressive strength of the fluid solidified soil while ensuring the early fluidity of the fluid solidified soil, inhibit the shrinkage deformation of the fluid solidified soil, and improve the durability of the fluid solidified soil. The present disclosure improves the recycling rate of solid waste resources and has the characteristics of low cost and remarkable environmental protection effect under the premise of ensuring the application effect, which is suitable for large-scale promotion and application.