Results 131 to 140 of about 567,772 (379)
Assessment of Natural Radioactivity Levels and Some Associated Radiological Hazards of Portland Cements and Their Raw Materials from Selected Cement Industries in Eastern Uganda [PDF]
, 2023 The radiological hazards as a result of the natural radionuclides 238U, 232Th and 40K for Portland cement from different factories were assessed using HPGe detectors.
Abdelmoaty, Yomna H. +3 more
core +1 more source
Structural Concrete, EarlyView.Abstract This study aims to examine the effect of carbon nanotubes (CNT) on the self‐healing performance of engineered cementitious composites (ECC) subjected to high temperatures. In ECC samples, CNT was used at 0%, 0.25%, 0.50%, and 0.75% by weight instead of cementitious materials.
Harun Tanyıldızı, Metehan Bulut
wiley +1 more source
Properties of concrete incorporating locally produced Portland limestone cement
Ain Shams Engineering Journal, 2018 Blended cements are increasingly being used in concrete to reduce the amount of clinker in the cement, thus achieving both economic and environmental gains. The use of limestone as a component of Portland cement is now common practice worldwide. Reducing
Fatma Shaker +2 more
doaj
Kinetics of the water absorption in slag cement mortars [PDF]
arXiv, 2002 We study the kinetics of absorption of water in portland cement mortars added with 60, 70 and 80% of granulated blast furnace slag (GGBS or Slag) cured in water and at open air and preheating at 50 and 100 C.A mathematical model is presented that allows describing the process not only in early ages where the capillary sorption is predominant but also ...
arxiv
Testing homogeneity in dynamic discrete games in finite samples [PDF]
arXiv, 2020 The literature on dynamic discrete games often assumes that the conditional choice probabilities and the state transition probabilities are homogeneous across markets and over time. We refer to this as the "homogeneity assumption" in dynamic discrete games.
arxiv
The origins of American industrial success: Evidence from the US portland cement industry [PDF]
The contributions of innovations, factor endowments and institutions to American industrialization are examined through analysing the rise of the American portland cement industry.
Prentice, David
core +1 more source
Mortar and concrete based on calcium sulphate binders [PDF]
, 2006 In this study both hemi-hydrate and anhydrite are tested as calcium sulphate binders for structural mortar and concrete. The advantage of using calcium sulphates instead of cement as a binder is the fact that the production of calcium sulphate is more ...
Bakker, J.J.F., Brouwers, H.J.H.
core +1 more source
Determining the strength of 3D printed concrete with the modified slant shear test
Structural Concrete, EarlyView.Abstract This study deals with the assessment of the load‐bearing capacity of layered 3D printed concrete (3DPC) using a modified slant shear test (MSST) to define a Mohr's envelope. To this aim, the established modified Coulomb yield condition of the concrete is complemented by a Coulomb failure criterion of the layer joints (cold or dry joints).
Lucia Licciardello +3 more
wiley +1 more source
Modeling the Early Stage Formation Mechanisms of Calcium Silicate Hydrates and Related Gels [PDF]
arXiv, 2019 Arguably the most ubiquitous construction material in modern civilization, concrete is enabling the development of megacities around the globe together with increasing living standards in developing nations. However, it can be argued that the concrete industry's somewhat empirical and conservative approach to change is hampering innovation and ...
arxiv