蒸养C80高强混凝土制备试验研究
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摘要
文中主要研究了用于预应力高强混凝土桩的C80蒸养混凝土的制备影响因素。通过S95矿粉、I级粉煤灰和石膏的掺入,研究其对混凝土力学性能的影响。研究结果表明,以石膏作为碱性激发剂S95矿粉在混凝土中用量20%时,混凝土的7d蒸养抗压强度可以达到88.7MPa。当矿粉掺量为15.0%、I级粉煤灰掺量5.0%,石膏掺量2.0%时的混凝土抗压强度达到最好,7d蒸养抗压强度可以达到91.5MPa。
This paper mainly studied the factors that influence the preparation of C80 steam curing concrete which used for pre-stressed high strength concrete piles. We studied the effect of mineral admixtures including I grade fly ash, S95 slag and gypsum addition to concrete on the mechanical properties. The results showed that when gypsum was added as a activator with the content of 20% S95 slag in the C80 steam curing concrete, 7 d steam curing compressive strength was 88.7 MPa, whereas, 5.0% I grade fly ash and 15.0% S95 slag with 2.0% gypsum were added in the concrete, the compressive strength was the best, in which 7 d steam curing compressive strength was 91.5 MPa.
This paper mainly studied the factors that influence the preparation of C80 steam curing concrete which used for pre-stressed high strength concrete piles. We studied the effect of mineral admixtures including I grade fly ash, S95 slag and gypsum addition to concrete on the mechanical properties. The results showed that when gypsum was added as a activator with the content of 20% S95 slag in the C80 steam curing concrete, 7 d steam curing compressive strength was 88.7 MPa, whereas, 5.0% I grade fly ash and 15.0% S95 slag with 2.0% gypsum were added in the concrete, the compressive strength was the best, in which 7 d steam curing compressive strength was 91.5 MPa.
引文
[1]袁泽洋.高强蒸养混凝土中大掺量矿粉的化学激发研究[D].西安:西安建筑科技大学. 2013.
[2]张文海,贾会杰,崔志忱,等. C100高强混凝土的配合比设计[J].中国港湾建设, 2018(6):47-50.
[3]樊俊江,於林锋,管文,等.预制构件用C100高强混凝土配合比研究[J].混凝土与水泥制品, 2017(10):24-28.
[4]蒲心诚,严吴南,王冲,等. 100~150MPa超高强高性能混凝土的配制技术[J].混凝土与水泥制品, 1998(6):24-28.
[2]张文海,贾会杰,崔志忱,等. C100高强混凝土的配合比设计[J].中国港湾建设, 2018(6):47-50.
[3]樊俊江,於林锋,管文,等.预制构件用C100高强混凝土配合比研究[J].混凝土与水泥制品, 2017(10):24-28.
[4]蒲心诚,严吴南,王冲,等. 100~150MPa超高强高性能混凝土的配制技术[J].混凝土与水泥制品, 1998(6):24-28.