Cement mortar composition and concrete composition

Abstract

The present invention provides a cement mortar composition and concrete composition and particularly, it provides a cement mortar composition comprising 100 parts by weight of cements, 100 to 300 parts by weight of glass beads, and 50 to 200 parts by weight of blending water and a concrete composition comprising the cement composition and aggregates. The cement mortar composition and concrete composition of the invention have excellent fluidity with the use of a small amount of blending water so that they can promptly migrate in the direction of gravity in a mold complicated with steel rods and other wires, prevent material separation and remove bubbles present inner or outer areas due to superior filling performance, can remarkably improve waterproof property of mortar (or concrete) and prevent their degradation. Besides, they require no additional cooling systems which are installed to control heat of hydration in civil engineering such as dams, piers and tunnels that are largely cast by absorbing the generated hydration heat within the mortar (or concrete), show no material separation phenomena, can block the alteration of a structure generated by corrosion by converting the surface of reinforcing rods into passevation, and enable high quality by having a reduced construction period due to shortened time to gain initial hardness from the start of construction, and having the high smoothness of finished faces and having no unevenness such as bubbles due to excellent filling performance.

Description

technical field [0001] The present invention relates to a cement mortar composition and a concrete composition, and more particularly, the present invention relates to a cement mortar composition and a concrete composition which exhibit excellent fluidity, water resistance and water resistance using a small amount of mixing water. Deterioration performance; prevents material separation and removes air bubbles present in internal or external areas due to excellent filling properties; does not require additional systems to remove heat of hydration; has excellent compatibility with steel products by reducing the surface tension of mortar (or concrete) Excellent compatibility, resulting in no material separation; resistance to corrosion-induced structural changes; and high smoothness of the finished surface. The present invention also relates to a method of constructing structures using the cement mortar composition and the concrete composition. Background technique [0002] Ce...

AI Technical Summary

Problems solved by technology

However, since the existing cement mortar composition generates a large amount of heat of hydration during construction, large-scale construction is impossible, and when the entire railway is constructed, the construction time is long