AU 14(3): 225228 (Jan. 2011) Letter 225 Effects of Sugar on Physical Properties of Ordinary Portland Cement Paste and Concrete Akogu Elijah Abalaka Building Department, Federal University of .
Individual phase properties of cement paste. A bimodal distribution of Young's modulus values was found, which accords with the hypothesized two kinds of CSH present in cement paste [ 37 ]. When averaged together, a value of E = GPa was found [ 5 ]. .
Here concrete specimens are cured under standard or other controlled conditions, and are used to maintain a specific curing or conditioning environment while studying curingrelated properties, such as degree of hydration, maturity, and shrinkage (free, autogenous, chemical, and restrained).
White portland cement (WPC) is made with raw ingredients that are low in iron and magnesium, the elements that give cement its grey color. These elements contribute essentially nothing to the properties of cement paste, so white portland cement actually has quite good properties.
concrete is important, as are proper curing and protection of the concrete during the early hardening period, which assure favorable conditions of temperature and moisture. Cure concrete properly for a minimum of three days in order to develop good durability. Another property that helps ensure durability is the water to cementitious ratio (w/c).
Abstract: Cement is a core component of concrete; its properties affect the properties of concrete made using the particular type of cement. Unsuitable choice of cement in construction work involving use of concrete can affect the integrity of the construction work.
Cement paste setting time is affected by a number of items including: cement fineness, watercement ratio, chemical content (especially gypsum content) and admixtures.
The properties a . re direct proportional to the design of the concrete, how much steel and how strong are the concrete. Your country will have a design code to which all structures in that ...
Cement Standards and Concrete Standards ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates.
and electrical conductivity of the hydrated cement paste incorporating different quantities of graphene were mea sured to understand thermal and electrical properties of the composite. SEM and rayX diffraction methods were used to understand the physical and structural properties of the graphenecement composite. 2. Experimental
The properties are direct proportional to the design of the concrete, how much steel and how strong are the concrete. Your country will ha . ve a design code to which all structures in that ...
and other concrete properties solely based on the properties and proportions of the mix components. Therefore, mixes are designed on an empirical basis, often with the help of trial mixes. The objective of the mix design is to assure that the product has specified properties in both the fresh and hardened state. The most important mix design ...
properties of the two types of cement mentioned above begins to reduce even when the percentage of alkalis still increases. Through the use of the ordinary Portland cement (type I) and the sulfate resisting Portland cement (type V), it is found that there is a little difference in the value of the physical properties. Keywords: Alkali, Percent