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Số người truy cập: 107,051,257

 An investigation of the elastic modulus of cement-stabilised soil by wet mixing method for sand ground
Tác giả hoặc Nhóm tác giả: Huu-Dao Do, Van-Ngoc Pham, Anh-Duc Pham, Phuong-Nam Huynh and Erwin Oh
Nơi đăng: Geotechnical Engineering Journal of the SEAGS & AGSSEA; Số: ISSN 0046-5828 (Q3);Từ->đến trang: 67-74;Năm: 2021
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
ABSTRACT: This paper presents the results of the experimental study to determine the correlation between the elastic modulus (E50) and the unconfined compressive strength (qu) of cement-treated soil by wet mixing method. Laboratory experiment program was conducted for four soil types: clayey sand, fine sand, medium sand and coarse sand with the amount of cement from 150 to 350 kg cement per cubic meter of natural soils. The unconfined compression tests were conducted, and stress-strain curves were recorded by Trapezium 2.24 software to determine qu in all cases at the ages of 7, 14, 21, 28, and 56 days. Bayesian Model Averaging method (BMA) was used to analyse the effect of cement content, soil type, curing time to the elastic modulus E50 and determine the linear regression equations between E50 and qu. The results can be applied for determing of the elastic modulus E50 of cement-treated sand by a wet-mixing method in order to calculate and design soil-cement columns bearing load for a high-rise building foundations. KEYWORDS: cement-treated soil, elastic modulus (E50), unconfined compressive strength (qu), stress-strain curves, soil-cement columns
ABSTRACT
ABSTRACT: This paper presents the results of the experimental study to determine the correlation between the elastic modulus (E50) and the unconfined compressive strength (qu) of cement-treated soil by wet mixing method. Laboratory experiment program was conducted for four soil types: clayey sand, fine sand, medium sand and coarse sand with the amount of cement from 150 to 350 kg cement per cubic meter of natural soils. The unconfined compression tests were conducted, and stress-strain curves were recorded by Trapezium 2.24 software to determine qu in all cases at the ages of 7, 14, 21, 28, and 56 days. Bayesian Model Averaging method (BMA) was used to analyse the effect of cement content, soil type, curing time to the elastic modulus E50 and determine the linear regression equations between E50 and qu. The results can be applied for determing of the elastic modulus E50 of cement-treated sand by a wet-mixing method in order to calculate and design soil-cement columns bearing load for a high-rise building foundations. KEYWORDS: cement-treated soil, elastic modulus (E50), unconfined compressive strength (qu), stress-strain curves, soil-cement columns
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