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Bài viết trình bày sự ảnh hưởng của hàm lượng geopolymer bột đá đến một số tính chất cơ lý của đất laterit, tính trương nở, tính co ngót và chỉ số sức mang tải CBR của đất laterit. | 48 Journal of Mining and Earth Sciences Vol. 61 Issue 6 2020 48 - 56 A case laboratory study on effect of quarry dust based geopolymer on physical and mechanical properties of laterit soil Duc Van Bui 1 Lam Phuc Dao2 Manh Van Nguyen1 Anh Quoc Nong3 Kennedy O.4 1 Civil Engineering Faculty Hanoi University of Mining and Geology Vietnam 2 Civil Engineering Faculty University of Transport Technology Vietnam 3 Bac Kan City Department of Transportation and Communication Vietnam 4 Department of Civil Engineering Michael Okpara University of Agriculture Umudike P. M. B. 7267 Umuahia 440109 Abia State Nigeria ARTICLE INFO ABSTRACT Article history This paper presents a case study on the laboratory examination of quarry Received 15th Oct. 2020 dust based geopolymer on some physical and mechanical properties of Accepted 23rd Nov. 2020 stabilized laterit soil. The laboratory test results indicate that both CBR Available online 31st Dec. 2020 and shrinkage limit of studied soil increased substantailly with increased Keywords rate of quarry dust based geopolymer QD-based geopolymer . CBR Specifically the laterit soils were treated with QD-based geopolymer in Geopolymer the proportions of 10 20 20 30 40 50 60 respectively by weight of dry soil the CBR values were increased from 7.4 to 35.71 at Quarry dust proportion of 40 QD-based geopolymer. The obtained CBR value of Shrinkage 35.71 meets the requirement to be used as filled meterials for pavement Swelling. purpose according to the TCVN 8857 2012. In constrast with the increase in CBR and shrinkage values the swelling potential of treated soils was found to be decreased with raising QD-geopolymer proportion for example the swelling potential decreased from 14.5 6.9 as adding 10 and 60 of QD- based geopolymer respectively . Copyright 2020 Hanoi University of Mining and Geology. All rights reserved. _____________________ Corresponding author E - mail buivanduc@humg.edu.vn DOI 10.46326 JMES.HTCS2020.07 Tạp chí Khoa học Kỹ thuật Mỏ
