Strength and stiffness characteristics of cement paste-slime mixtures for embedded piles

被引：5

作者：

Byun, Yong-Hoon ^{[1
]}

Seo, Mi Jeong ^{[2
]}

Han, WooJin ^{[2
]}

Kim, Sang Yeob ^{[3
]}

Lee, Jong-Sub ^{[2
]}

机构：

[1] Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, 80 Daehak Ro, Daegu 41566, South Korea

[2] Korea Univ, Sch Civil Environm & Architectural Engn, 145 Anam Ro, Seoul 02841, South Korea

[3] Konkuk Univ, Dept Fire & Disaster Prevent, 268 Chungwon Daero, Chungju 27478, South Korea

来源：

COMPUTERS AND CONCRETE | 2023年 / 31卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

cement paste; elastic modulus; elastic wave velocity; embedded pile; slime; uniaxial compressive strength; ULTRASONIC PULSE VELOCITY; WATER/CEMENT RATIO; CONCRETE STRENGTH; SHAFT RESISTANCE; WATER-CONTENT; ABRAMS LAW; PROPAGATION; PREDICTION; MORTARS; BASE;

D O I：

10.12989/cac.2023.31.4.359

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Slime is produced by excavation during the installation of embedded piles, and it tends to mix with the cement paste injected into the pile shafts. The objective of this study is to investigate the strength and stiffness characteristics of cement paste -slime mixtures. Mixtures with different slime ratios are prepared and cured for 28 days. Uniaxial compression tests and elastic wave measurements are conducted to obtain the static and dynamic properties, respectively. The uniaxial compressive strengths and static elastic moduli of the mixtures are evaluated according to the curing period, slime ratio, and water-cement ratio. In addition, dynamic properties, e.g., the constrained, shear, and elastic moduli, are estimated from the compressional and shear wave velocities. The experimental results show that the static and dynamic properties increase under an increase in the curing period but decrease under an increase in the slime and water-cement ratios. The cement paste-slime mixtures show several exponential relationships between their static and dynamic properties, depending on the slime ratio. The bearing mechanisms of embedded piles can be better understood by examining the strength and stiffness characteristics of cement paste-slime mixtures.

引用

页码：359 / 370

页数：12

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