Quick-hardening Concrete Composition Using Seaweeds and Constructing Methods Using Thereof

The invention boring cement 100 parts by weight based, algae 3 to 20 parts by weight; Acrylic resin 20 to 80 parts by weight; Prepolymer from 30 to 80 parts by weight; Curing agent 5-30 parts by weight; Calcium sulfo aluminate, 10 to 20 parts by weight; Aggregate 50 to 1,000 parts by weight; Retardant 0.1 to 5 parts by weight; Powder 5 to 20 parts by weight; And Zinnia light concrete superplasticizer composition comprising 0.01 to 10 parts by weight, and to a construction method using the same. The present invention improves the working conditions, while still reducing the environmental contamination is quickly cured at the same time having comparable or higher strength and conventional concrete provides a readily zinnia light concrete composition that can be applied to a concrete placement is required in hard.