不同矿物掺合料掺量对海工混凝土力学性能影响分析

Analysis of the Influence of Different Mineral Admixtures on the Mechanical Properties of Marine Concrete

为满足复杂环境对海工混凝土力学性能要求,研究了不同矿物掺合料(粉煤灰、矿粉、硅灰)对不同龄期海工混凝土试件抗压强度的影响,研究结果表明:不同矿物掺合料对不同龄期的海工混凝土立方体抗压强度具有不同的影响;粉煤灰掺量为10%~30%时,海工混凝土强度会随着粉煤灰掺量的增加而降低;适量的矿粉掺量可以增加海工混凝土抗压强度;硅灰掺量在5%~10%之间时海工混凝土强度相对较高;不同规范对矿物掺合料的掺量有不同要求,在满足特定环境条件要求的前提下,应尽量保证混凝土对力学性能的要求。

In order to meet the requirements for the mechanical properties of marine concrete in complex environments,the results of the study are the effects of different mineral admixtures(fly ash,slag,silica fume)on the compressive strength of marine concrete specimens of different ages.It shows that different mineral admixtures have different effects on the compressive strength of marine concrete cubes of different ages;when the amount of fly ash is 10%to 30%,the strength of marine concrete will decrease with the amount of fly ash.increased;the appropriate amount of mineral powder can increase the compressive strength of marine concrete;when the content of silica fume is between 5%and 10%,the strength of marine concrete is relatively high;the content of mineral admixtures in different specifications there are different requirements.Under the premise of meeting the requirements of specific environmental conditions,we should try our best to ensure the requirements of concrete for mechanical properties.