Effect of fly ash and styrene butadiene rubber on the properties of hot mix asphalt

2020 ◽  
Author(s):  
Alaa Saadi Abbas
Keyword(s):  
Fly Ash ◽  
Hot Mix Asphalt ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Styrene Butadiene

Effect of Fly Ash as Filler in Rubber – A Comprehensive Study of the Vulcanisate Properties of Styrene-Butadiene Rubber Compounds

2013 ◽  
Vol 29 (3) ◽  
pp. 151-168 ◽  
Author(s):  
Mridul Dasgupta ◽  
Saptarshi Kar ◽  
Saikat Das Gupta ◽  
Rabindra Mukhopadhyay ◽  
Abhijit Bandyopadhyay
Keyword(s):  
Fly Ash ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Compounds ◽  
Styrene Butadiene ◽  
Comprehensive Study

scholarly journals Effect of Admixtures on Mechanical Properties of Cementitious Mortar

2020 ◽  
Vol 6 (11) ◽  
pp. 2175-2187
Author(s):  
Ahmed Jawad Shaukat ◽  
Hu Feng ◽  
Anwar Khitab ◽  
Ahmad Jan
Keyword(s):  
Fly Ash ◽  
Mechanical Strength ◽  
Silica Fume ◽  
Weight Ratio ◽  
Silica Content ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Water To Cement Ratio ◽  
Primary Focus ◽  
Styrene Butadiene

In the current study, the primary focus is to investigate the effect of Styrene Butadiene Rubber (SBR), silica fume and fly ash on compressive and flexure strengths of cementitious mortar. Three types of specimens are prepared; the first series comprises of control specimen; the second one consists of the mortar’s specimen modified with SBR and the third one consists of the mortar’s specimen modified with SBR in a combination of fly ash and silica fumes. Mortar samples are cast in the weight ratio of 1:2.75 (cement: sand). The SBR is added at a rate of 20% of the mass of cement. The water to cement ratio (W/C) is kept at 0.5 for control specimens and the quantity of mixing water in SBR-containing samples is reduced by the same amount as the SBR is added: The adjustment is meant to obtain same consistency for all the specimens.  20% fly ash and 2.5% silica fume are added to the mortar as replacement of cement. Compressive and flexure tests are carried out according to ASTM standards. Moreover, SEM is also performed on samples at the age of 28 days. Studies reveal that SBR and SCMs reduce the mechanical strength of the mortars. SEM and EDS studies show that SBR hinders the formation of albite, whereas silica content from silica fumes and fly ash converts CaCO3 to Wollastonite (a white loose powder), which is responsible for the reduction of mechanical strength. The study also confirms that the addition of SBR in place of water hinders the formation of primary and secondary hydration products. Doi: 10.28991/cej-2020-03091610 Full Text: PDF

Enhancing the mechanical and durability properties of fly ash-based geopolymer mortar modified by polyvinyl alcohol fibers and styrene butadiene rubber latex

2021 ◽  
Vol 11 (9) ◽  
pp. 1453-1465
Author(s):  
Fang Xu ◽  
Heng Li ◽  
Tao Sun ◽  
Yu Zhou ◽  
Jing Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Flexural Strength ◽  
Polyvinyl Alcohol ◽  
Microstructural Analysis ◽  
Film Structure ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Dry Shrinkage ◽  
Styrene Butadiene

This study investigated three types of fly ash-based geopolymer mortar (FAG) modified with polyvinyl alcohol fiber (PVA) or styrene butadiene rubber (SBR) latex, where the influence of PVA fibers and SBR latex on the mechanical properties and durability of FAG were studied. The sample performance was subsequently interpreted by characterizing the microstructures of modified FAG samples via the use of scanning electron microscopy (SEM), where the internal structural stress and modification mechanisms were clarified by microstructural analysis. The results showed that the incorporation of PVA fibers mainly promotes the mechanical properties of the samples, especially the early flexural strength, and alleviates their dry shrinkage. However, adding SBR latex to the geopolymer mortar damages the compressive strength and increases the dry shrinkage of samples while improving their freeze-thaw resistance and 28-day flexural strength. The results also show that FAGs have great sulfate resistance. Microstructural analysis reveals that while the dehydrated SBR latex is capable of forming a continuous porous film structure, the fibers also facilitate the formation of a three-dimensional network structure between the dense FAG gels; thus, a more stable geopolymer structure is formed, resulting in an improvement in the toughness and durability of the samples. Furthermore, the SBR latex promotes tight connections between the fibers and geopolymer matrix so that the bond strength between the interfacial transition zone (ITZ) is greatly enhanced.

Nanostructured fly ash-styrene butadiene rubber hybrid nanocomposites

2008 ◽  
Vol 30 (11) ◽  
pp. 1647-1656 ◽  
Author(s):  
K. Thomas Paul ◽  
S.K. Pabi ◽  
K.K. Chakraborty ◽  
G.B. Nando
Keyword(s):  
Fly Ash ◽  
Hybrid Nanocomposites ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Nanostructured Fly Ash ◽  
Styrene Butadiene
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