泵送轻集料混凝土配合比设计及试验研究
摘要：轻集料混凝土又叫轻骨料混凝土，是指用轻粗骨料、轻砂（或普通砂）、水泥和水配制而成的干表观密度不大于1950kg/m3的混凝土。泵送轻集料混凝土宜采用砂轻骨料混凝土。尽管轻骨料混凝土单位立方造价比同强度等级的普通密度混凝土要高，但轻集料混凝土本身质量小，能减轻建筑物的自重，减低基础处理费用，缩小结构断面和增加使用面积，可降低工程造价5～10%，同时还具有良好的耐久性、耐火性、抗震性和抗裂性能，因而具有显著的综合经济效益。
关键词：混凝土；试验研究
abstract: the pumping of lightweight aggregate concrete should adopt sand lightweight aggregate concrete. although the cubic cost of lightweight aggregate concrete units higher than the ordinary density of the same strength grade concrete, lightweight aggregate concrete mass is small, can reduce the weight of the building, to reduce and cost of foundation treatment to reduce the structural section and increase the use of area, it can reduce the project cost 5 to 10 percent, but it also has good durability, fire resistance, earthquake resistance and crack resistance, and therefore it has significant economic benefits.key words: concrete;
experimental study
泵送轻集料混凝土配合比设计及试验研究
摘要：轻集料混凝土又叫轻骨料混凝土，是指用轻粗骨料、轻砂（或普通砂）、水泥和水配制而成的干表观密度不大于1950kg/m3的混凝土。泵送轻集料混凝土宜采用砂轻骨料混凝土。尽管轻骨料混凝土单位立方造价比同强度等级的普通密度混凝土要高，但轻集料混凝土本身质量小，能减轻建筑物的自重，减低基础处理费用，缩小结构断面和增加使用面积，可降低工程造价5～10%，同时还具有良好的耐久性、耐火性、抗震性和抗裂性能，因而具有显著的综合经济效益。
关键词：混凝土；试验研究
abstract: the pumping of lightweight aggregate concrete should adopt sand lightweight aggregate concrete. although the cubic cost of lightweight aggregate concrete units higher than the ordinary density of the same strength grade concrete, lightweight aggregate concrete mass is small, can reduce the weight of the building, to reduce and cost of foundation treatment to reduce the structural section and increase the use of area, it can reduce the project cost 5 to 10 percent, but it also has good durability, fire resistance, earthquake resistance and crack resistance, and therefore it has significant economic benefits.key words: concrete;
experimental study