Microstructure and performance of 1–3 connectivity environmental friendly lead-free BNBK-Portland cement composites

2017 ◽  
Vol 90 ◽  
pp. 59-65 ◽  
Author(s):  
Ruamporn Potong ◽  
Rattiyakorn Rianyoi ◽  
Athipong Ngamjarurojana ◽  
Arnon Chaipanich
Keyword(s):  
Portland Cement ◽  
Lead Free ◽  
Cement Composites ◽  
Environmental Friendly ◽  
And Performance ◽  
Microstructure And Performance

scholarly journals Investigation of the Effects of Polymer Dispersants on Dispersion of GO Nanosheets in Cement Composites and Relative Microstructures/Performances

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 964 ◽  
Author(s):  
Shenghua Lv ◽  
Haoyan Hu ◽  
Yonggang Hou ◽  
Ying Lei ◽  
Li Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Uniform Distribution ◽  
Methacrylic Acid ◽  
Cement Composites ◽  
Polar Groups ◽  
And Performance ◽  
Microstructure And Performance ◽  
Poly Acrylonitrile ◽  
Poly Acrylamide

This study focused on the uniform distribution of graphene oxide (GO) nanosheets in cement composites and their effect on microstructure and performance. For this, three polymer dispersants with different level of polar groups (weak, mild, and strong) poly(acrylamide-methacrylic acid) (PAM), poly(acrylonitrile-hydroxyethyl acrylate) (PAH), and poly(allylamine-acrylamide) (PAA) were used to form intercalation composites with GO nanosheets. The results indicated that GO nanosheets can exist as individual 1–2, 2–5, and 3–8 layers in GO/PAA, GO/PAH, and GO/PAM intercalation composites, respectively. The few-layered (1–2 layers) GO can be uniformly distributed in cement composites and promote the formation of regular-shaped crystals and a compact microstructure. The compressive strengths of the blank, control, GO/PAM, GO/PAH, and GO/PAA cement composites were 55.72, 78.31, 89.75, 116.82, and 128.32 MPa, respectively. Their increase ratios relative to the blank sample were 40.54%, 61.07%, 109.66%, and 130.29%, respectively. Their corresponding flexural strengths were 7.53, 10.85, 12.35, 15.97, and 17.68 MPa, respectively, which correspond to improvements of 44.09%, 64.01%, 112.09%, and 134.79%.

Thermal expansion behaviors of 0–3 connectivity lead-free barium zirconate titanate-Portland cement composites

2017 ◽  
Vol 43 ◽  
pp. S129-S135 ◽  
Author(s):  
Ruamporn Potong ◽  
Rattiyakorn Rianyoi ◽  
Athipong Ngamjarurojana ◽  
Rattikorn Yimnirun ◽  
Ruyan Guo ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Portland Cement ◽  
Lead Free ◽  
Barium Zirconate ◽  
Cement Composites ◽  
Barium Zirconate Titanate ◽  
Zirconate Titanate

Influence of BNBK Particle Size on Properties of 0-3 Lead-Free BNBK Ceramic-Portland Cement Composites

2017 ◽  
Vol 866 ◽  
pp. 183-186
Author(s):  
Ruamporn Potong ◽  
Rattiyakorn Rianyoi ◽  
Athipong Ngamjarurojana ◽  
Arnon Chaipanich
Keyword(s):  
Particle Size ◽  
Dielectric Constant ◽  
Portland Cement ◽  
Sodium Titanate ◽  
Acoustic Properties ◽  
Lead Free ◽  
Impedance Match ◽  
Cement Composites ◽  
Median Particle ◽  
Curing Method

The 0-3 lead-free bismuth sodium titanate-bismuth potassium titanate-barium titanate (BNBK) ceramic/Portland cement composites (PC) were fabricated by pressing and curing method. The influence of BNBK particle size on the dielectric and acoustic properties of 0-3 BNBK-PC composites was studied. BNBK of various median particle sizes (75, 212 and 425 μm) at 50% by volume were mixed with Portland cement to produce the 0-3 BNBK-PC composites. The dielectric constant results of composites were found to increase with increasing BNBK particle size and the dielectric constant of composite with 425 μm particle size at 1 kHz was 196. The 0-3 BNBK-PC composites in the range tested have an acoustic impedance match with concrete structure.

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