Study on concrete strength assessment based on non-standard small size specimens
PAN Lijun
CHEN Weidong
JIANG Chenhui
Abstract：At present,in many standards and technical specifications,the flexural strength is often measured using standard specimens with sizes[e g.,150×150×600(550~525)mm prisms] and weights(28~33 kg) which incur a lot of operational difficulties. This paper presents an experimental study that conducts flexural strength tests using non-standard small size specimens (i e.,100 mm×100 mm×300 mm prisms)and the use of specimen ends(i.e.,100 mm cubes sawn from the broken parts of 100 mm×100 mm×300 mm prisms after flexural tests) for compressive strength tests. Additionally,strength assessment result is obtained from the non-standard specimens and standard specimens,and the relativity between them was also investigated. The experiments are performed on 12 mixtures with various ingredients and proportions. The study concludes that non-standard small size specimens can be used as an alternative for evaluating flexural and compressive strengths of modern concrete. The proposed relativity equation obtained by regression analysis of the two strengths matches well with actual data in literature.
Keywords：concretenon-standard specimenflexural strengthcompressive strengthregression analysisrelativitystrength pre-diction
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 23-27 )