为了改善混凝土的物理力学性能、缩短蒸养时间和降低蒸养温度、以及节约水泥,我们在径向压制法生产的混凝土管中进行了复合外加剂的应用试验。试验用的材料为低、中含量铝酸盐的500号水泥、细度模数2.65的砂及5～10毫米的花岗岩碎石。集料中砂占0.7(以体积计),水泥用量为350～500公斤/米~3(级差为50公斤/米~3)。混凝土强度为40兆帕。外加剂采用“10-03”、“30-03”和以木质素磺酸盐(C(?)σ)为主要成分的塑化剂与硫酸钠或HHXK的复合的外加剂。立方试体(边长10厘米)振动加压成型(压力为80克/厘米~2),在18～20℃自然条件下养护,或按1.5+2+2+0小时的制度(恒温温度为40、60和 In order to improve the physical and mechanical properties of the concrete, shorten the steaming time and reduce the steaming temperature, and save cement, we applied composite admixtures in concrete pipes produced by radial compaction. The materials used for the test were low-, medium-content aluminate, No. 500 cement, fineness modulus 2.65 sand, and 5 to 10 mm granite gravel. The sand in the aggregate accounts for 0.7 (by volume) and the cement dosage is 350-500 kg/m3 (with a differential level of 50 kg/m3). Concrete strength is 40 MPa. The admixture was a compounding agent of “10-03”, “30-03” and a plasticizer mainly composed of lignosulfonate (C(?)?) with sodium sulfate or HHXK. Cubic test body (side length 10 cm) vibration pressure molding (pressure 80 g/cm ~ 2), maintained at 18 ~ 20 °C under natural conditions, or according to the system of 1.5 + 2 +2 +0 hours (temperature constant temperature is 40, 60 and