天然沸石载气体轻骨料多孔砼

Cellular Concrete and Lightweight Aggregate Cellular Concrete with Natural Zeolite as a Gas-Carrier

沸石经加热脱水、冷却,伴随吸收空气,这种天然沸石粉末称为载气体。将其与水泥浆拌合能将载气转入水泥浆中,并使水泥浆膨胀。复经水泥凝结硬化在砼中形成一种多孔结构,这程砼称之为载气体多孔砼。在这种砼中,若以轻骨料取代天然骨料,则得到载气体多孔轻骨料砼。在标准养护条件下载气体多孔砼的抗压强度达5.0～7.0MPa(10cm×10cm×10cm试件),容重为700～900kg/m^3。而载气体多孔轻骨料砼的强度及容重则相应为12.0～14.0MPa及900～1000kg/m^3。载气体天然沸石能与胶结料反应,因此无论是载气体多孔砼或载气体多孔轻骨料砼其强度均能随龄期的增长而提高。

After heating, water deprivation and cooling with simultaneous air-absorbing,the natural zeolite becomes gas-carrier. When it is mixed with cement paste, the gas moves into the paste, causing the latter to expand. Then it is followed by cement setting and hardening and a cellular structure is formed in the concrete, which is called gas-carrier cellular concrete. And, a substitution of lightweight aggregate for the natural one in this concrete will, in turn, give a gas-carrier light weight aggregate cellular concrete. After standard curing the compressive strength and density of the gas-carrier cellular concrete will respectively be 5. 0～7. 0 MPa(10cm×10cm×10cm sample)and 700～900 kg/m3, while those of gas-carrier cellular light-weight aggregate concrete will correspondingly be 12.0-14. 0 MPa and 900-1000kg/m3. Gas-carrier natural zeolite can react with cementing material. Hence, the strength of either of the two concretes may increase with age.