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A platform for research: civil engineering, architecture and urbanism
Baking-free brick prepared from waste engineering residue soil and preparation method of baking-free brick
The invention discloses a waste engineering muck baking-free brick and a preparation method thereof, the waste engineering muck baking-free brick is prepared by adding phosphogypsum and Portland cement to solidify engineering muck, and then using soybean urease to catalyze urea hydrolysis so as to induce calcium carbonate deposition in a mixed material for further improvement. The environment pollution caused by phosphorization by-products is reduced, the mechanical property and the pore structure of the engineering residue soil are improved, the compressibility of the engineering residue soil is effectively reduced, and the curing engineering residue soil is used for pressing and forming the baking-free brick on site, so that the cyclic utilization of the two wastes is realized.
本发明公开了一种废弃工程渣土免烧砖及其制备方法，先加入磷石膏和硅酸盐水泥对工程渣土进行固化，再利用大豆脲酶催化尿素水解，从而诱导混合物料中碳酸钙沉积以进一步改良。既降低磷化副产品对环境的污染，又改善工程渣土的力学特性和孔隙结构，有效降低其压缩性，并利用固化工程渣土现场压制成型免烧砖，实现两种废料的循环利用。
Baking-free brick prepared from waste engineering residue soil and preparation method of baking-free brick
The invention discloses a waste engineering muck baking-free brick and a preparation method thereof, the waste engineering muck baking-free brick is prepared by adding phosphogypsum and Portland cement to solidify engineering muck, and then using soybean urease to catalyze urea hydrolysis so as to induce calcium carbonate deposition in a mixed material for further improvement. The environment pollution caused by phosphorization by-products is reduced, the mechanical property and the pore structure of the engineering residue soil are improved, the compressibility of the engineering residue soil is effectively reduced, and the curing engineering residue soil is used for pressing and forming the baking-free brick on site, so that the cyclic utilization of the two wastes is realized.
本发明公开了一种废弃工程渣土免烧砖及其制备方法，先加入磷石膏和硅酸盐水泥对工程渣土进行固化，再利用大豆脲酶催化尿素水解，从而诱导混合物料中碳酸钙沉积以进一步改良。既降低磷化副产品对环境的污染，又改善工程渣土的力学特性和孔隙结构，有效降低其压缩性，并利用固化工程渣土现场压制成型免烧砖，实现两种废料的循环利用。
Baking-free brick prepared from waste engineering residue soil and preparation method of baking-free brick
一种废弃工程渣土免烧砖及其制备方法
SHI XIUSONG (author) / HE ZIHAO (author) / YANG JIAN (author) / WAN XING (author) / DING JIANWEN (author) / BIAN XIA (author)
2023-09-08
Patent
Electronic Resource
Chinese
IPC:
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B28C
Tonaufbereitung
,
PREPARING CLAY
/
C04B
Kalk
,
LIME
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