This paper reports the effects of carbon nanofibers (CNFs) on nanoscaled mechanical properties of cement composites. CNFs were added to cement composites at the filler loading of 0.2 wt % (by wt. of cement). Micrographs based on scanning electron microscopy (SEM) show that CNFs are capable ...
Portland cement is the most used material as a safety barrier in P&A operations. However, the extreme conditions of the well have challenged the mechanical properties of Portland Cement. In this context, the present work aims to identify the adequate systems as permanent plugging material and to ...
The paper reviews the properties of cement composites reinforced with short fibres. The effect of natural fibres was investigated: cotton, sisal, jute, ramie, bamboo, and synthetic fibres: polymer and polypropylene. It was noticed that the fibres change the consistency of the mixture up to 15%....
T Chappex,KL Scrivener - 《Cement & Concrete Research》 被引量: 75发表: 2012年 Alkali-activated cementitious materials: Mechanisms, microstructure and properties The goal of this study was to examine the activation reaction, microstructure, properties, identify the mechanisms of activation, and achiev...
The effects of the addition of self-prepared super absorbent polymer(SAP) on the properties of cementitious mortar formulations with varied water-cement ratios(m(w)/m(c),in mass) were studied.The degree of fluidity of fresh mortar,dimension shrinkage of hardening mortars during dry curing conditi...
This paper presents an experimental study on mechanical properties of an innovative ultra-lightweight cement composite (ULCC) at low temperatures down to −60 °C in comparison with those at ambient temperature. Those properties include stress-strain curve, ultimate strength, elastic modulus, Poisson...
physical and mechanical propertiesThe residues of tea factory and waste hardboards are generally incinerated without utilizing their heat performances. The first objective of this study was to manufacture cement bonded particleboard using residues of tea factory (Camellia sinenses L.) and waste hard...
The objective of this paper was to evaluate the mechanical and physical properties of oriented strand board (OSB) using cement as binder. It was found that an increase of cement-wood ratio resulted in an increase of all, but MOR values. A lower cement-wood ratio than for particleboards is...
This study investigates the effect of thermal cycles on the fracture properties of the cement-based bi-materials. Sixty eight cubes were exposed to a varied number of 24-hour thermal cycles ranging from 0 to 90 and subsequently were tested in a wedge splitting configuration. The mechanical and ...
The volume fraction of each phase has an important influence on CA mortar microstructure. The relationship between the mechanical properties of cement stone and the volume fraction of each phase in the hardened slurry has been studied, Verbeck G.J. [12] found that the elastic modulus E of cem...