...). This formulation was called FBJ. The samples were subjected to tests for density, rheology, free water, settling, thickening time, compressive strength (CS), fluid loss, porosity and permeability, along with microscopic photography and computed tomography scanning. Compared with other drilling cements, the FBJ...

...Liangliang Lu; Shuyun Zhu; Zhibin Liu The influences of the sand–cement (s/c) ratio and microstructure on the water permeability of cement mortar were examined. Laboratory experiments were carried out to study the influence of the s/c ratio on the seepage failure of cement mortar. The results...

...Yuan Gao; Hongwen Jing; Zefu Zhou; Xinshuai Shi; Zhenlong Zhao A theoretical model to predict the water permeability of nano-reinforced cement pastes from the pore structure (including the pore size distribution, pore interconnection, porosity and microcracks) is presented. The model is based...

... of NS were 0%, 1%, 2%, 3% and 4%. Compressive strength, tensile strength, flexural strength, water permeability and chloride permeability were measured at 7, 28 and 90 days. Microstructural investigations were performed using scanning electron microscopy on selected concrete mixtures. The test results...

...Shuai Bai; Xinchun Guan The aim of this paper was to use the surface fractal dimension (D_s) to evaluate the chloride ion penetration of cement mortar in extremely cold regions. Pore structure is a critical factor that influences the permeability of cement mortar. This study...

..., with the latex particles exhibiting a typical core–shell structure. Its performance as an oil-well cement was also evaluated. The results showed that the XY-5–cement slurry has good temperature resistance, salt resistance, low water loss and low permeability. Furthermore, the use of XY-5 effectively improved...

...Xiaohao Sun; Linchang Miao; Linyu Wu; Chengcheng Wang; Runfa Chen Cracks will affect the service life of concrete, even if they are small ones. A crack healing method based on biomineralisation is presented to repair microcracks in concrete specimens. By analysing the change in permeability...

... 03 02 2018 ICE Publishing: All rights reserved 2018 compressive strength permeability pozzolans The use of cellulose fibres as alternatives for conventional reinforcements in cement-based composites has gained the interest of academics and industry over the last few years...

... with BS EN 12390-8:2009 (BSI, 2009b). 22 10 2016 03 01 2017 05 01 2017 ICE Publishing: All rights reserved 2017 compressive strength permeability pozzolans Due to its numerous advantages, cement is one of the most extensively used construction materials...