River channel slope protection surface lining cast-in-place concrete expansion joint structure and construction method thereof

[0040] A cast-in-situ concrete joint structure and a construction method for lining a river slope protection surface, comprising the following steps:

[0041] S1 determines the position of the expansion joint 7;

[0042] S2 pre-cut polyethylene closed-cell foam board 2;

[0043] S3 places "13+2" polyethylene closed-cell foam board 2 and fixes it with iron nails 4;

[0044] Lay polyethylene closed-cell foam board 2 on the inner wall of the pouring box, and fix it with iron nails 4 after placement;

[0045] S4 Concrete layer 1 is poured and maintained;

[0046] Concrete layer 1 is poured in the installed pouring box, and the thickness of concrete layer 1 is 550mm;

[0047] S5 tear off the excess 2cm polyethylene closed-cell foam board 2;

[0048] S6 Paste double-sided adhesive tape 8 on both sides of the expansion joint 7;

[0049] S7 polysulfide sealant sealing coating;

[0050] Specifically, "13+2" in step S2 is to pre-cut the 15 cm polyethylene closed-cell foam board 2 int