Lightweight aggregate-based non-steam-cured high-performance pipe culvert and preparation method thereof

A lightweight aggregate-based non-steam-cured pipe culvert, wherein the lightweight aggregate-based non-steam-cured pipe culvert is prepared from a raw material comprising the following components by mass per unit volume:

• 300-450 kg/m3 of a sulfur-aluminum-ferric cementitious material;
• 800-920 kg/m3 of a solid waste-based lightweight aggregate;
• 300-550 kg/m3 of a solid waste-based artificial sand;
• 0-100 kg/m3 of a mineral admixture;
• 0-50 kg/m3 of an auxiliary material;
• and
• 110-160 kg/m3 of water;
• and
• the raw material further comprises a water reducer and a retarder, the water reducer being added in an amount of 1.5-5 wt % of the sulfur-aluminum-ferric cementitious material, and the retarder being added in an amount of 0.1-0.5 wt % of the sulfur-aluminum-ferric cementitious material;
• the solid waste-based lightweight aggregate comprises the following components in percentage by mass:
• 10-20% of the sulfur-aluminum-ferric cementitious material, 0-90% of phosphogypsum or desulfurized gypsum, and 0-90% of fly ash or gold tailings, and the solid waste-based lightweight aggregate has a particle size of 5-20 mm;
• the solid waste-based artificial sand comprises the following components in percentage by mass:
• 10-20% of the sulfur-aluminum-ferric cementitious material, 0-90% of phosphogypsum or desulfurized gypsum, and 0-90% of fly ash or gold tailings, and the solid waste-based artificial sand has a particle size of 0.15-4.75 mm.