Instantaneous nondestructive evaluation of elastic modulus by using knocking ball test on sedimentary and metasedimentary rock slope

被引：0

作者：

Razali, Mazlina ^{[1
,2
]}

Ismail, Mohd Ashraf Mohamad ^{[1
,6
]}

Nagendran, Sharan Kumar ^{[3
]}

Zainal, Zuraini ^{[3
]}

Kawano, Kenichi ^{[4
]}

Date, Kensuke ^{[5
]}

Yokota, Yasuhiro ^{[5
]}

机构：

[1] Univ Sains Malaysia, Sch Civil Engn, Engn Campus, George Town, Penang, Malaysia

[2] Univ Teknol MARA, Coll Engn, Civil Engn Studies, Permatang Pauh Campus, Cawangan Pulau Pinang, Pulau Pinang, Malaysia

[3] Ctr Excellence Engn & Technol CREaTE, Publ Works Dept JKR, Alor Gajah, Melaka, Malaysia

[4] Kajima Corp, Kajima Tech Res Inst, Soil Mech & Geotech Engn Grp, Tokyo, Japan

[5] Kajima Corp, Kajima Tech Res Inst Singapore, Singapore, Singapore

[6] Univ Sains Malaysia, Sch Civil Engn, Engn Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia

来源：

MEASUREMENT | 2023年 / 223卷

关键词：

Elastic modulus; Knocking ball; Hertz's theory; Schmidt hammer; Nondestructive testing; UNIAXIAL COMPRESSIVE STRENGTH; SCHMIDT HAMMER; MECHANICAL-PROPERTIES; HARDNESS;

D O I：

10.1016/j.measurement.2023.113774

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The elastic modulus of rock masses is a critical parameter for many engineering applications. However, in situ measurement of the elastic modulus can be challenging and time-consuming. This study established a new in situ method to measure the elastic modulus of rock masses, enhancing prior technology using Hertz's theory. The method involves using a knocking ball, which strikes the rock surface with a spherical steel hammer, providing an instantaneous measurement. The knocking ball method was tested on a variety of rock types, and the results showed a significant correlation (R-2 > 0.8) between the elastic modulus of the knocking ball (Ekb) and the in situ uniaxial compressive strength (UCS-Schmidt). The knocking ball method overcomes the limitations of the Schmidt hammer by offering rapid, direct, and multipoint measurements. The knocking ball method is non -destructive, handheld, and easy to use, making it ideal for use in field applications.

引用

页数：20

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