Indoor heat-preservation sound-insulation anti-cracking floor structure and construction method thereof

The invention provides an indoor heat-preservation and sound-insulation anti-cracking floor structure. The indoor heat-preservation and sound-insulation anti-cracking floor structure is sequentially provided with a light heat-preservation and sound-insulation mortar layer, a multifunctional interface agent layer, a high-crack-resistance concrete layer, special silencing cotton for floors and a floor surface layer from bottom to top. The invention further provides a construction method of the indoor heat-preservation sound-insulation anti-cracking floor structure. The light heat-preservation and sound-insulation mortar is laid on the base layer, indoor heat transfer loss can be reduced, the heat-preservation and energy-saving effects are achieved, sound wave transfer is reduced through the sound-insulation material in the mortar, the sound-insulation effect is achieved, and the load of the building floor can be reduced through the light material. 本发明提供一种室内保温隔音防开裂地坪结构，自下而上依次设有轻质保温隔音砂浆层、多功能界面剂层、高抗裂混凝土层、地板专用消音棉和地