飞机拦阻系统用超轻质混凝土组成设计研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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飞机拦阻系统用超轻质混凝土组成设计研究

Mix Proportion Design of Ultra-lightweight Concrete for Engineered Material Arresting System

2020年第8期

飞机拦阻系统；超轻质混凝土；溃缩强度；干密度；惰性掺合料

Engineered Material Arresting System; Ultra-lightweight concrete; Crushing strength; Dry density; Inert additive

2020年第8期

10.19761/j.1000-4637.2020.08.012.06

国家重点研发计划项目（2017YFB0309903）。

方俊，王振地，王玲

中国建筑材料科学研究总院有限公司绿色建筑材料国家重点实验室，北京 100024

方俊，王振地，王玲

方俊,王振地,王玲.飞机拦阻系统用超轻质混凝土组成设计研究[J].混凝土与水泥制品,2020(8):12-17.

FANG J,WANG Z D,WANG L.Mix Proportion Design of Ultra-lightweight Concrete for Engineered Material Arresting System[J].China Concrete and Cement Products,2020(8):12-17.

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摘要：为保持飞机拦阻系统用超轻质混凝土溃缩强度的长期稳定，设计了“P·I水泥+惰性掺合料”胶凝材料体系，基于超轻质混凝土的干密度及溃缩强度的变化规律，确定了关键制备参数的适宜取值范围，研究了超轻质混凝土的孔结构特征。结果表明，“P·I水泥+重质碳酸钙”体系下超轻质混凝土在60 d后溃缩强度基本保持稳定，重质碳酸钙掺量为63.0%~64.3%时，超轻质混凝土60~150 d溃缩强度变化率为0.93%~7.08%，压溃曲线平台段应力偏差为±4.98%~±9.70%。发泡剂和稳泡剂的推荐掺量分别为4.4%、5.0%，稳泡剂能优化超轻质混凝土孔径分布。适宜水胶比为0.54~0.56，提高水胶比可能增加气孔的数量。 Abstract: In order to control the long-term stability of crushing strength of ultra-lightweight concrete used in Engineered Material Arresting System (EMAS), the cementing material system of "P·I cement+inert additive" was designed. Based on the dry density and crushing strength of ultra-lightweight concrete, the appropriate values of inert additive and other key preparation parameters were determined, and the pore structure characteristics of ultra-lightweight concrete was also studied. The results show that under the "P·I cement+heavy calcium carbonate" system, the crushing strength of ultra-lightweight concrete remains basically stable after 60 d. When the dosage of heavy calcium carbonate is 63.0%~64.3%, the change rate of crushing strength from 60 d to 150 d is 0.93%~7.08%, and the stress deviation of the platform segment is ±4.98%~±9.70%. The recommended dosage of foaming agent and foam stabilizer is 4.4% and 5.0% respectively. Foam stabilizer can optimize the pore size distribution of ultra-lightweight concrete. The suitable water- binder ratio is 0.54~0.56. And the increase of water-binder ratio can enlarge the number of pores.

英文名 : Mix Proportion Design of Ultra-lightweight Concrete for Engineered Material Arresting System

刊期 : 2020年第8期

关键词 : 飞机拦阻系统；超轻质混凝土；溃缩强度；干密度；惰性掺合料

Key words : Engineered Material Arresting System; Ultra-lightweight concrete; Crushing strength; Dry density; Inert additive

刊期 : 2020年第8期

DOI : 10.19761/j.1000-4637.2020.08.012.06

文章编号 :

基金项目 : 国家重点研发计划项目（2017YFB0309903）。

作者 : 方俊，王振地，王玲

单位 : 中国建筑材料科学研究总院有限公司绿色建筑材料国家重点实验室，北京 100024

方俊，王振地，王玲

方俊,王振地,王玲.飞机拦阻系统用超轻质混凝土组成设计研究[J].混凝土与水泥制品,2020(8):12-17.

FANG J,WANG Z D,WANG L.Mix Proportion Design of Ultra-lightweight Concrete for Engineered Material Arresting System[J].China Concrete and Cement Products,2020(8):12-17.

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摘要

参数

结论

参考文献

引用本文

Abstract: In order to control the long-term stability of crushing strength of ultra-lightweight concrete used in Engineered Material Arresting System (EMAS), the cementing material system of "P·I cement+inert additive" was designed. Based on the dry density and crushing strength of ultra-lightweight concrete, the appropriate values of inert additive and other key preparation parameters were determined, and the pore structure characteristics of ultra-lightweight concrete was also studied. The results show that under the "P·I cement+heavy calcium carbonate" system, the crushing strength of ultra-lightweight concrete remains basically stable after 60 d. When the dosage of heavy calcium carbonate is 63.0%~64.3%, the change rate of crushing strength from 60 d to 150 d is 0.93%~7.08%, and the stress deviation of the platform segment is ±4.98%~±9.70%. The recommended dosage of foaming agent and foam stabilizer is 4.4% and 5.0% respectively. Foam stabilizer can optimize the pore size distribution of ultra-lightweight concrete. The suitable water- binder ratio is 0.54~0.56. And the increase of water-binder ratio can enlarge the number of pores.

关键词:

设计

the

and

轻质

混凝土

ultra-lightweight

crushing

strength

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