Topic
Cement
About: Cement is a research topic. Over the lifetime, 68440 publications have been published within this topic receiving 829356 citations.
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TL;DR: In this paper, the authors evaluated the efficacy of high-reactivity metakaolin (HRM) in controlling expansion due to alkali-silica reaction (ASR).
219 citations
TL;DR: In this article, the impact of polymer modification on the physical properties of cementitious mortars was investigated using a multimethod approach, where the identification and quantification of different polymer components within the cementitious matrix was put into consideration.
219 citations
TL;DR: In this article, the influence of the pozzolanic activity of metakaolin (MK) on the hydration heat has been studied in comparison to the behaviour of other traditional materials such as fly ash and silica fume.
219 citations
TL;DR: In this article, the authors present the results of examination of concrete with alumina cement and ceramic sanitary ware wastes as aggregate in 1000°C temperature, and show that these specimens after heating continued to display high compressive and tensile strength.
218 citations
24 Sep 1983-Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences
TL;DR: In this paper, a theory is formulated to connect the strength of cement paste with its porosity, which shows that bending strength is largely dictated by the length of the largest pores, but there is also an influence of the volume of porosity which affects toughness through changing elastic modulus and fracture energy.
Abstract: A theory is formulated to connect the strength of cement paste with its porosity. The theory shows that bending strength is largely dictated by the length of the largest pores, as in the Griffith (1920) model, but there is also an influence of the volume of porosity, which affects toughness through changing elastic modulus and fracture energy. Verification of this theory was achieved by observing the large pores in cement, and then relating bending strength to the measured defect length, modulus and fracture energy. The argument was proved by developing processes to remove the large pores from cement pastes, thereby raising the bending strength to 70 MPa. Further removal of colloidal pores gave a bending strength of 150 MPa and compression strength up to 300 MPa with improved toughness. Re-introduction of controlled pores into these macro-defect-free (mdf) cements allowed Feret’s law (1897) to be explained.
218 citations