Laboratory study of the effects of using magnesium slag on the geotechnical properties of cement stabilized soil

Amini, Omid; Ghasemi, Mojtaba

doi:10.1016/j.conbuildmat.2019.07.011

Cited by 87 publications

(17 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the frost resistance of different clay-based materials can be improved by delaying or decreasing the occurrence of macroscopic cracks, including overconsolidated clays [17], sulfate saline clay [18], cementitious composites [19], rubber-improved cement clay [20], and fiberreinforced clay [21]. Recently, researchers have investigated some additives to improve the engineering performance of cement-treated clay, such as magnesium slag [22], waste tire rubber fibers [23], nano-MgO [24,25], as well as Pozzolanic [26]. On the other hand, fiber has been widely used in clay reinforcement due to its high strength, desirable frost and acid resistance, and reasonable water absorption and dispersion characteristics [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

View full text Add to dashboard Cite

This study aimed to investigate the feasibility of using polypropylene fiber-cement-stabilized coastal clay as base-course material or foundation material for city sustainable development by assessing its mechanical performance. The influence of the number of freeze–thaw cycles and curing ages on the mechanical properties of ordinary cemented clay (OCC) and polypropylene fiber-cemented clay (PCC) was investigated by using unconfined compressive test. The experimental results show that the addition of fiber with 1% content can increase the strength as well as the ductility of cemented clay by 12.5% and 15.6%, respectively. The strength of PCC and OCC at 22d age was 1.5 times than at 7d age. Under differently timed freeze–thaw cycles, the mechanical performance of PCC is improved, and, better than that, OCC improves by 11.8% in strength, 16.5% in strain and by 5% in degree of damage, indicating that fiber can improve the freeze–thaw resistance of cemented clay. The frost resistance of PCC and OCC increases with the increase in curing age. Finally, the variation of strength of OCC was explained through the change of micro-structure while the strength enhancing mechanism of polypropylene fiber for cemented clay was also revealed.

show abstract

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

View full text Add to dashboard Cite

show abstract

“…(2) The volcanic ash reaction: Reaction of active components with calcium hydroxide to produce hydrated calcium silicate, hydrated calcium aluminate, improving the connection among particles. Industrial waste, such as magnesium slag, sintered limestone, domestic waste incinerator slag, and CFB-fly-ash [ 10 , 11 ], mainly rely on the hydration reaction of their active components to produce more cement products, thereby improving the characteristics of cement-stabilized base materials. (3) The micro-crystal nucleus effect: Provide crystal nucleus of hydration products to accelerate cement hydration.…”

Section: Introductionmentioning

confidence: 99%

Study on Strength, Water Stability, Shrinkage, and Microstructure of CFB Slag Modified Cement Stabilized Clay

et al. 2021

View full text Add to dashboard Cite

Circulating fluidized bed slag (CFBS) is an industrial waste produced by coal combustion in power plants. To explore the application of CFB slag in cement-stabilized bases, this paper studies the influence of different dosage of CFBS on the mechanics, water stability, and shrinkage of cement-stabilized soil using laboratory experiments. The hydration activity and interface morphology of CFBS in cement-stabilized clay were observed using XRD and SEM. The improvement mechanism of CFBS on the performance of cement-stabilized clay was revealed. The results indicated that, compared with cement-stabilized clay, cement–CFBS-stabilized clay exhibited better mechanical and water stability, and significantly inhibited the shrinkage deformation of cement-stabilized clay. When the addition of CFBS was 70%, cement–CFBS-stabilized clay had the best mechanics and durability. Microscopic tests show that CFBS contains more active silicon aluminum oxide, which is easily dissolved and the hydration of which produces more gel products, so the mixture structure is denser, the strength is improved, and water does not easily evaporate; it has the characteristics of micro expansion which compensates for dry shrinkage deformation.

show abstract

“…Bunun yanında, çeşitli Volkanik Kül (<50 Mikron) malzemelerin alt temel ve dolgu malzemesi olarak kullanımına yönelik araştırmalar ise her geçen gün artmaktadır [10][11][12]. Benzer olarak, yüksek fırın cürufların yol dolgularında başarılı olarak kullanıldığını gösteren oldukça fazla çalışma literatürde vardır [13,14] Yollarda dolgu, alttemel ve temel malzemesi olarak volkanik cüruf çakılının performansını iyileştirmek için birçok stabilizasyon tekniği kullanarak araştırmalar yapılmıştır [15][16][17]. Araştırmacılar, Etiyopya'nın birçok bölgesinde bol miktarda bulunan çok gözenekli volkanik cüruf malzemeyi, mekanik harmanlama ve çimento ile kimyasal stabilizasyon yoluyla mühendislik özelliklerini iyileştirerek karayollarında alttemel ve temel malzemesi olarak kullanılabileceğini gösterilmiştir [15].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Stabilization of Kayseri Volcanic slag materials with cement in flexible pavement

Acar

2021

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

Kayseri Volkanik cürufu (VC), patlayıcı volkanik aktivite sonucu oluşan zemin ebatlarında ponza, kaya kırıntıları, puzolanik mineraller ve volkanik kül içeren doğal malzemelerdir. Volkanik cüruf, konik cüruf tepeleri şeklinde doğada hazır agrega olarak bulunmakta veya yapı temel kazılarından atık olarak çıkmaktadır. Bu çalışmanın amacı, Kayseri’de bol miktarda doğal olarak bulunan bu cürufların, havaalanı gibi geniş hacimli dolgu projelerinde ve esnek kaplamalı karayollarının temel, alttemel ve çeşitli dolgularında doğrudan veya çimento ile iyileştirildikten sonra inşaat malzemesi olarak kullanım potansiyelinin araştırılmasıdır. Elde edilen sonuçlar, volkanik cürufun yol dolgu ve alttemel tabakası için uygun olduğu ancak Kaliforniya taşıma oranı (CBR) değerinin düşük olmasından dolayı, zemin iyileştirme yapılmadan temel tabakası için uygun olmadığı ve kullanılamayacağını göstermiştir. VC'nin karayollarının temel tabakasında kullanımını araştırmak için, %3 ve %5 çimento ile stabilize edilerek tek eksenli basınç dayanımı (UCS) ve CBR deneyleri yapılmıştır. En iyi sonuç olarak, %5 çimento karışımıyla 7 ve 28 günlük UCS dayanımı sırasıyla 3,1 MPa ve 4,97 MPa ve CBR dayanımı sırasıyla %108,4 ve %148,6 elde edilmiştir. Bu değerler, temel tabakası için standartlarda belirtilen minimum dayanım gereksinimini karşılamıştır. Sonuç olarak, doğada hazır olarak bulunan volkanik cürufların %5 çimento ile stabilize edilmesiyle geoteknik özelliklerinin iyileştirilebileceği ve esnek kaplamalı yollarda temel, alttemel ve çeşitli dolgularda inşaat malzemesi olarak kullanılabileceği ortaya koyulmuştur.

show abstract

Laboratory study of the effects of using magnesium slag on the geotechnical properties of cement stabilized soil

Cited by 87 publications

References 41 publications

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Study on Strength, Water Stability, Shrinkage, and Microstructure of CFB Slag Modified Cement Stabilized Clay

Stabilization of Kayseri Volcanic slag materials with cement in flexible pavement

Contact Info

Product

Resources

About