Waterproofing sheet for civil engineering use

A waterproof sheet for civil engineering, comprising a layer (A) comprising a composition containing an ethylene-vinyl acetate copolymer (a1) and a thermoplastic resin (a2) other than the ethylene-vinyl acetate copolymer (a1), and a silica-containing layer comprising silica,

• wherein:
• the thermoplastic resin (a2) comprises at least one selected from the group consisting of (β-farnesene)-styrene-butadiene-styrene-(β-farnesene) copolymer (FSBSF), styrene-isobutylene-styrene block copolymer (SIBS), and styrene-ethylene/propylene-styrene block copolymer (SEPS),
• the content of the ethylene-vinyl acetate copolymer (a1) in the composition is 30 to 95% by mass,
• the content of the thermoplastic resin (a2) is 5 to 70% by mass,
• the absolute value of the difference between the SP value of the ethylene-vinyl acetate copolymer (a1) and the SP value of the thermoplastic resin (a2) is less than 0.70 (cal/cm3)1/2, and
• the content ratio of the structural unit derived from vinyl acetate in the composition is 5% by mass or more and less than 30% by mass.