Comparison of the effectiveness of microsilica modification of lightweight concretes with coarse aggregates from various rocks

Author:

Paskachev A. B.1ORCID,Rzhevskaya T. G.2ORCID,Stel'makh S. A.3ORCID,Shcherban E. M.3ORCID,Mailyan L. D.3ORCID,Mailyan A. L.3ORCID

Affiliation:

1. Institute of Migration and Interethnic

2. Research Center "Construction"

3. Don State Technical University

Abstract

A promising line of research in construction science and practice is the creation of lightweight concretes. They exhibit the so-called strength-density ratio, i. e. a relative characteristic between the strength and weight of the resulting concrete. This ratio simultaneously reflects the maximum possible weight reduction of the structure and its operational reliability. The research aims to compare the effectiveness of microsilica modification of lightweight concretes produced with coarse aggregates from various rocks. The study analyzed the existing scientific literature on lightweight concretes, their formulations, technology, and scientific validity, as well as the structural compatibility of the components used. A comparison was made of the effectiveness of lightweight concrete modification for various formulation technological parameters. The strength of modified lightweight concrete and its strengthdensity ratio changed significantly compared to unmodified lightweight concrete. The strongest effect is achieved when using lightweight granite concrete modified with 9 % of microsilica. As a result, the maximum compressive strength was 55.9 MPa, and the strength-density ratio was 24.3•10-3 MPa•m3/kg compared to other studied concrete compositions. The increase in compressive strength was 17.2 % compared to unmodified lightweight concrete. The strength-density ratio increased by 19.1 % compared to unmodified coarse dense aggregate concrete.

Publisher

Irkutsk National Research Technical University

Reference19 articles.

1. Bazhenov Yu.M., Fedyuk R.S., Lesovik V.S. Review of modern high-performance concretes. In: Naukoemkie tekhnologii i innovatsii: materialy Mezhdunarodnoi nauchno-prakticheskoi konferentsii, posvyashchennoi 65-letiyu BGTU im. V.G. Shukhova = High-tech technologies and innovations: materials of the International Scientific and Practical Conference dedicated to the 65th anniversary of V.G. Shukhov BSTU. 29 April 2019, Belgorod. Belgorod: Belgorod State Technological University V.G. Shukhov; 2019. Part 4. p. 45-49. (In Russ.). https://doi.org/10.12737/conferencearticle_5cecedc1472d77.15382194. EDN: MOGOKR.

2. Abdykalykov T.A., Dzhamaeva A.M. Lightweight fine-grained concretes based on composite binders. Materialovedenie. 2017;2:20-23. (In Russ.). EDN: FTHADU.

3. Khalyushev A., Mayilyan A., Stelmakh S., Shcherban E. The activation technology for the surface modification high voltage electric field dispersed mineral additives for concrete. Materials science forum. 2020;1011:23-30. https://doi.org/10.4028/www.scientific.net/msf.1011.23.

4. Fedosov S.V., Akulova M.V., Gunina N.M., Potemkina O.V. Investigation of the influence of the type and size of aggregate on the properties of cement composite. Stroitel'stvo i rekonstruktsiya = Building and reconstruction. 2012;3(41):59-65. (In Russ.). EDN: OZMCHJ.

5. Leonovich S.N., Poleyko N.L. Operational characteristics of concrete on aggregate from sedimentary rocks. Stroitel'nye materialy = Building materials. 2016;8:66-69. (In Russ.). https://doi.org/10.31659/0585-430X-2016-740-8-66-69.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3