2. 您的位置
3. 首页
4. 会议论文
5. 活性粉末混凝土损伤后的抗硫酸盐侵蚀研究

活性粉末混凝土损伤后的抗硫酸盐侵蚀研究

来源 :中国硅酸盐学会水泥分会第六届学术年会 | 被引量 : 0次 | 上传用户：yinyuewn

【摘 要】

：

本文通过对钢纤维体积含量为0％和2％的两种活性粉末混凝土试件分别加载至峰值荷载的0、60％、70％和80％的压力值来模拟不同程度的损伤，得到了试件在不同程度损伤后加载度与基频振动频率之间的关系曲线，然后采用干湿循环法对试件的抗硫酸盐侵蚀能力进行了研究.研究表明：50次硫酸钠溶液干湿循环作用下，两种试件的基振频率均随损伤程的提高一直呈增长趋势，未掺钢纤维试件的增幅较大，最大增幅达6.3％.钢纤维掺量

【作 者】

：

安明喆 李同乐 余自若 张戈 黄瀚锋 

【机 构】

：

北京交通大学土木建筑工程学院,北京100044 北京城建设计发展集团股份有限公司,北京100071

【出 处】

：

中国硅酸盐学会水泥分会第六届学术年会

【发表日期】

：

2016年11期

【关键词】

：

活性粉末混凝土 损伤 干湿循环 抗折强度 

下载到本地 , 更方便阅读

下载此文 赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　本文通过对钢纤维体积含量为0％和2％的两种活性粉末混凝土试件分别加载至峰值荷载的0、60％、70％和80％的压力值来模拟不同程度的损伤，得到了试件在不同程度损伤后加载度与基频振动频率之间的关系曲线，然后采用干湿循环法对试件的抗硫酸盐侵蚀能力进行了研究.研究表明：50次硫酸钠溶液干湿循环作用下，两种试件的基振频率均随损伤程的提高一直呈增长趋势，未掺钢纤维试件的增幅较大，最大增幅达6.3％.钢纤维掺量2％试件的质量变化随损伤程度的提高呈现增加的规律，最大增幅为0.3％.在50次循环内，两种试件在不同损伤程度下的抗折强度均呈现出先下降后上升的变化规律.掺入钢纤维提高了活性粉末混凝土的抗硫酸盐侵蚀能力.

其他文献

Carbon nanotube/Cu composite films with super high electric conduction electron

Carbon nanotubes own ultrahigh electron mobility with ballistic conduction behavior but comparatively rare conductive band electrons.If by a way, enough electrons can be transferred to carbon nanotube

会议

Design and fabrication of optical coatings for advanced radiation imager onboard new generation geos

China has developed its geostationary meteorological satellites and associated ground application systems from the 1980s.In the recent two decades, six satellites in the series of FY-2 have been launc

会议

Towards improvement of photovoltaic performance of aqueous dye-sensitized solar cells by tungsten-do

Water as electrolyte solvent in dye-sensitized solar cells (DSCs) would negatively shift the conduction band of TiO2 because water molecules irreversibly change the interfacial properties of the dyed

会议

A first principle study on atomic layer deposition mechanism: Case study of aluminum thin films on c

Theoretical study on deposition mechanism of aluminum and iridium thin films by atomic layer deposition method was carried out by density functional method.For special applications,we aimed to deposit

会议

Effects of substrate roughness of Ti alloy on vacuum tribological properties of duplex bonded MoS2/P

The present study focuses on the influence of substrate roughness on the tribological properties of Ti-6Al-4V, dry sliding against stainless steel ball under vacuum environment.

会议

Two dimensional 2D inverse periodic opal structures in single crystal diamond with incorporated sili

Well-ordered opal-diamond composite and inverted opal (IO) structure in single crystal (SC) diamond have been prepared by microwave plasma CVD.The process is based on epitaxial diamond growth through

会议

Domain evolution and piezoelectric response across thermotropic phase boundary in (K,Na)NbO3-based e

(K,Na)NbO3 (KNN) based ceramics, as competitive lead-free counterparts, have attracted substantial attentions because of their high piezoelectric response.In this work, KNN based epitaxial thin films

会议

Study on 5~45 μm far infrared optical filter

Earth radiation budget is of significance to the study of weather and climate and their correlation.The new generation of earth radiation detectors based on short wave channel (0.3~5.0 μm) and the tot

会议

Photocatalytic activity of stable self-doped TiO2-x nanostructured thin films deposited by glancing

Tailored production of nonstoichiometric titanium dioxide nanostructured thin film (TNF) has attracted considerable interest in the green energy field.In this paper,amorphous TNFs were deposited by th

会议

Tuning the transmittance and the electrochromic behavior of WO3 based nanostructured thin films by g

In recent years, WOx electrochromic thin films by glancing angle deposition (GLAD) have been demonstrated to be preponderant due to the favorable diffusion of ions.The WO3-based thin films are deposit

会议