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A platform for research: civil engineering, architecture and urbanism
Spraying mortar and preparation method thereof
The invention relates to the technical field of tunnel engineering, in particular to jet mortar and a preparation method thereof.The jet mortar is prepared from, by mass, 90-120 parts of cement, 0-5 parts of admixture, 90-600 parts of sand, 140-300 parts of water, 0-60 parts of sodium hydroxide, 0.5-4 parts of water reducing agent, 5-12 parts of accelerator, 0-10 parts of mixed fiber and 12-150 parts of saw dust. The recycled sawdust is doped into the mortar instead of sand, so that the porosity of the mortar is improved, the mass of the mortar is reduced, the cost of the mortar is reduced, the adhesive property of the mortar is improved by utilizing the admixture, and the cracking of the mortar is delayed and the rebound rate is reduced by adding the mixed fibers into the mortar. The prepared spraying mortar can tightly bond a primary support, a waterproof layer and a secondary lining, and has the advantages of light weight, low rebound rate, large porosity, good permeability, energy conservation, environmental protection and the like.
本发明涉及隧道工程技术领域，具体而言，涉及一种喷射砂浆及其制备方法，所述喷射砂浆包括按照质量份数计的以下组分：水泥90～120份，掺合料0～5份，砂子90～600份，水140～300份，氢氧化钠0～60份，减水剂0.5～4份，速凝剂5～12份，混合纤维0～10份和锯末12～150份。本发明通过回收锯末代替砂子掺入到砂浆中，提高了砂浆的孔隙率，减轻了砂浆的质量，降低了砂浆的成本，利用掺合料提高砂浆的粘结性能，在砂浆中加入混合纤维，延缓砂浆开裂并降低了回弹率，制备的喷射砂浆能使初支、防水层、二衬紧密粘接，并具有质量轻、回弹率低、孔隙率大、渗透性好、节能环保等优点。
Spraying mortar and preparation method thereof
The invention relates to the technical field of tunnel engineering, in particular to jet mortar and a preparation method thereof.The jet mortar is prepared from, by mass, 90-120 parts of cement, 0-5 parts of admixture, 90-600 parts of sand, 140-300 parts of water, 0-60 parts of sodium hydroxide, 0.5-4 parts of water reducing agent, 5-12 parts of accelerator, 0-10 parts of mixed fiber and 12-150 parts of saw dust. The recycled sawdust is doped into the mortar instead of sand, so that the porosity of the mortar is improved, the mass of the mortar is reduced, the cost of the mortar is reduced, the adhesive property of the mortar is improved by utilizing the admixture, and the cracking of the mortar is delayed and the rebound rate is reduced by adding the mixed fibers into the mortar. The prepared spraying mortar can tightly bond a primary support, a waterproof layer and a secondary lining, and has the advantages of light weight, low rebound rate, large porosity, good permeability, energy conservation, environmental protection and the like.
本发明涉及隧道工程技术领域，具体而言，涉及一种喷射砂浆及其制备方法，所述喷射砂浆包括按照质量份数计的以下组分：水泥90～120份，掺合料0～5份，砂子90～600份，水140～300份，氢氧化钠0～60份，减水剂0.5～4份，速凝剂5～12份，混合纤维0～10份和锯末12～150份。本发明通过回收锯末代替砂子掺入到砂浆中，提高了砂浆的孔隙率，减轻了砂浆的质量，降低了砂浆的成本，利用掺合料提高砂浆的粘结性能，在砂浆中加入混合纤维，延缓砂浆开裂并降低了回弹率，制备的喷射砂浆能使初支、防水层、二衬紧密粘接，并具有质量轻、回弹率低、孔隙率大、渗透性好、节能环保等优点。
Spraying mortar and preparation method thereof
一种喷射砂浆及其制备方法
JIANG YAJUN (author) / YU LIANGMIN (author) / ZHAO JUMEI (author) / WANG CUIJUAN (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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