Technologie du génie architectural

Abstrait

A Study on of the Engineering Properties of Self-Compacting Mass Concrete (SCMC)

Her-Yung Wang*, Yi-Fang Shih and Hen-Ching Su

This study discusses the engineering properties of the self-compacting mass concrete mixed with plain cement and pozzolan. Two mix proportions of and three manufacturers are were used for quality control testing and drilling before the finished product pouring was poured, and the products are were tested to check determine whether they meet the performance standards of R1 self-compacting concrete. Including basic tests were performed for slump flow, flow time when with a slump flow is of 50 cm, flow time of in a V funnel, flow in a U-shaped channel (testing for possibility flow through obstacles) and filling height. The difference in workability is discussed by was investigated by using a Big U-shaped channel test to simulate the onsite structure prototype dimensions, and standard cylindrical specimens and model core-drilled specimens were made to determine the compressive strength of concrete and to check for non-uniformity, segregation and bleeding in the processes of transportation, pouring and squeezing lift-up. The temperature change during the hydration of the concrete material model was measured, and curing at the work site was carried out to simulate future field construction conditions. This made it possible to validate the temperature control effect of the self-compacting mass concrete with pozzolan, and the data can be used as a reference for selfcompacting concrete quality control in future construction projects. The findings show that self-compacting mass concrete with pozzolan can reduce the heat of hydration and provides other good engineering properties.