Effect of highland barley straw ash admixture on properties and microstructure of concrete

被引：31

作者：

Cao, Feng ^{[1
,2
]}

Qiao, Hongxia ^{[1
,2
]}

Li, Yuanke ^{[1
]}

Shu, Xiuyuan ^{[1
]}

Cui, Lijun ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Gansu, Peoples R China

[2] Qinghai Minzu Univ, Sch Civil & Transportat Engn, Xining, Qinghai, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 315卷

关键词：

Highland barley straw ash; Activity index; Physical properties; Mechanical properties; Pore structure; Microstructure; WHEAT-STRAW; MECHANICAL-PROPERTIES; CEMENT; PERMEABILITY; DURABILITY; AGGREGATE;

D O I：

10.1016/j.conbuildmat.2021.125802

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study investigated the activity of highland barley straw ash (HBSA) and proposed methods for preparing active HBSA. In addition, the effects of HBSA addition on the physical and mechanical properties of concrete and the microstructure of concrete with different HBSA contents were investigated. With the increasing HBSA content, the water absorption and concrete porosity first decreased and then increased, while the opposite trend was observed for the compressive and splitting tensile strengths. The concrete with 15% HBSA exhibited the best physical and mechanical properties because HBSA addition changed the composition of hydration products and optimized the concrete pore structure.

引用

页数：14

共 53 条

[1]

Agrawal A., 2021, KABEER, V25, DOI [10.1061/ (ASCE)HZ.2153-5515.0000637, DOI 10.1061/(ASCE)HZ.2153-5515.0000637]

[2] Effects of using rice straw and cotton stalk ashes on the properties of lightweight self-compacting concrete [J].

Agwa, Ibrahim Saad ;

Omar, Omar Mohamed ;

Tayeh, Bassam A. ;

Abdelsalam, Bassam Abdelsalam .

CONSTRUCTION AND BUILDING MATERIALS, 2020, 235

[3] Durability of concrete made by partial replacement of fine aggregate by colemanite and barite and cement by ashes of corn stalk, wheat straw and sunflower stalk ashes [J].

Aksogan, Orhan ;

Binici, Hanifi ;

Ortlek, Ersin .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 106 :253-263

[4] Effect of wheat straw ash on mechanical properties of autoclaved mortar [J].

Al-Akhras, NM ;

Abu-Alfoul, BA .

CEMENT AND CONCRETE RESEARCH, 2002, 32 (06) :859-863

[5] Assessment of Greener Cement by employing thermally treated sugarcane straw ashes [J].

Alvares Ferreira, Eduardo Gurzoni ;

Yokaichiya, Fabiano ;

Rodrigues, Michelle S. ;

Beraldo, Antonio L. ;

Isaac, Augusta ;

Kardjilov, Nikolay ;

Franco, Margareth K. K. D. .

CONSTRUCTION AND BUILDING MATERIALS, 2017, 141 :343-352

[6]

[Anonymous], 1999, Method of Testing Cements-Determination of Strength

[7]

GB/T17671

[8]

[Anonymous], 2019, 500812019 GBT

[9]

[Anonymous], 2006, Standard of Water for Concrete

[10]

[Anonymous], 2006, Standard for Technical Requirements and Test Method of Sand and Crushed Stone (or Gravel) for Ordinary Concrete. Ministry of Housing and Urban-Rural Construction of the People's Republic of China

← 1 2 3 4 5 6 →