Anti-mud additive suitable for machine-made sand concrete and compounding method thereof

The invention relates to an anti-mud additive suitable for machine-made sand concrete and a compounding method thereof. The anti-mud additive comprises the following components in parts by weight: 30-50 parts of a lignosulfonate water reducing agent, 20-35 parts of a viscosity reduction type polycarboxylic acid water reducing agent, 0.2-0.25 part of a defoaming agent and 20-45 parts of water. Thecompounding method specifically comprises the following steps: mixing and compounding the mud-resistant admixture and the machine-made sand concrete, wherein the performance of the machine-made sand concrete can be changed by changing the adding sequence of the lignosulfonate water reducing agent. Compared with the prior art, the anti-mud additive can be used for improving the mud resistance of the machine-made sand concrete, and the cohesiveness and compressive strength of the machine-made sand concrete can be remarkably improved. 本发明涉及一种适用于机制砂混凝土的抗泥型外加剂及其复配方法，所述抗泥型外加剂包括以下组分及重量份含量：木质素磺酸盐减水剂30-50份、降粘型聚羧酸减水剂20-35份、消泡剂0