A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Alkali-activated phosphogypsum self-leveling mortar
The invention relates to alkali-activated ardealite self-leveling mortar, which is prepared from 55 to 70 parts of ardealite, 10 to 20 parts of slag, 1 to 3 parts of alkali activator, 30 to 50 parts of fine aggregate, 0.02 to 0.1 part of retarder, 0.05 to 0.12 part of defoaming agent, 0.02 to 0.06 part of water-retaining agent and 0.1 to 0.3 part of water reducing agent. According to the invention, industrial waste phosphogypsum and mineral powder are used as main raw materials, waste is turned into wealth, the cost is low, the economic benefit is high, compared with similar products, the product has better market competitiveness, meanwhile, environmental pollution is reduced, and a new way is opened up for utilization of phosphogypsum; calcium hydroxide is adopted as an alkali activator and can jointly excite the activity of an alkali-activated cementing material in the ardealite self-leveling mortar with sulfate in the ardealite, the fluidity and the setting time of the obtained ardealite self-leveling mortar are adjusted, and the problems of poor mechanical property and poor water resistance of the ardealite self-leveling mortar are solved; the calcium hydroxide can preferentially adsorb inert salt Ca3 (PO4) 2 generated by eutectic phosphorus precipitation in the ardealite, so that adverse effects of the calcium hydroxide on the ardealite self-leveling mortar are avoided.
本发明涉及一种碱激发磷石膏自流平砂浆，磷石膏55‑70份、矿渣10‑20份、碱激发剂1‑3份、细骨料30‑50份、缓凝剂0.02‑0.1份、消泡剂0.05‑0.12份、保水剂0.02‑0.06份、减水剂0.1‑0.3份。本发明以工业废弃物磷石膏和矿粉为主要原料，变废为宝，成本低廉，经济效益高，与同类产品比较，更具有市场竞争力，同时，减少了环境污染，为磷石膏的利用开辟了一条新途径；采用氢氧化钙为碱激发剂，可以和磷石膏中的硫酸盐共同激发磷石膏自流平砂浆中碱激发胶凝材料活性，调控制得的磷石膏自流平砂浆的流动度和凝结时间，解决了磷石膏自流平砂浆的力学性能和耐水性能差的问题，除此之外，氢氧化钙还会优先吸附磷石膏中共晶磷析出产生的惰性盐Ca3(PO4)2，避免其对磷石膏自流平砂浆产生不利影响。
Alkali-activated phosphogypsum self-leveling mortar
The invention relates to alkali-activated ardealite self-leveling mortar, which is prepared from 55 to 70 parts of ardealite, 10 to 20 parts of slag, 1 to 3 parts of alkali activator, 30 to 50 parts of fine aggregate, 0.02 to 0.1 part of retarder, 0.05 to 0.12 part of defoaming agent, 0.02 to 0.06 part of water-retaining agent and 0.1 to 0.3 part of water reducing agent. According to the invention, industrial waste phosphogypsum and mineral powder are used as main raw materials, waste is turned into wealth, the cost is low, the economic benefit is high, compared with similar products, the product has better market competitiveness, meanwhile, environmental pollution is reduced, and a new way is opened up for utilization of phosphogypsum; calcium hydroxide is adopted as an alkali activator and can jointly excite the activity of an alkali-activated cementing material in the ardealite self-leveling mortar with sulfate in the ardealite, the fluidity and the setting time of the obtained ardealite self-leveling mortar are adjusted, and the problems of poor mechanical property and poor water resistance of the ardealite self-leveling mortar are solved; the calcium hydroxide can preferentially adsorb inert salt Ca3 (PO4) 2 generated by eutectic phosphorus precipitation in the ardealite, so that adverse effects of the calcium hydroxide on the ardealite self-leveling mortar are avoided.
本发明涉及一种碱激发磷石膏自流平砂浆，磷石膏55‑70份、矿渣10‑20份、碱激发剂1‑3份、细骨料30‑50份、缓凝剂0.02‑0.1份、消泡剂0.05‑0.12份、保水剂0.02‑0.06份、减水剂0.1‑0.3份。本发明以工业废弃物磷石膏和矿粉为主要原料，变废为宝，成本低廉，经济效益高，与同类产品比较，更具有市场竞争力，同时，减少了环境污染，为磷石膏的利用开辟了一条新途径；采用氢氧化钙为碱激发剂，可以和磷石膏中的硫酸盐共同激发磷石膏自流平砂浆中碱激发胶凝材料活性，调控制得的磷石膏自流平砂浆的流动度和凝结时间，解决了磷石膏自流平砂浆的力学性能和耐水性能差的问题，除此之外，氢氧化钙还会优先吸附磷石膏中共晶磷析出产生的惰性盐Ca3(PO4)2，避免其对磷石膏自流平砂浆产生不利影响。
Alkali-activated phosphogypsum self-leveling mortar
一种碱激发磷石膏自流平砂浆
XU JIANJUN (author) / CHEN YUE (author) / LUAN MINGYU (author) / WU KAISHENG (author)
2022-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Phosphogypsum self-leveling mortar and preparation method thereof
| European Patent Office | 2020
Phosphogypsum solid waste self-leveling mortar and preparation method thereof
| European Patent Office | 2021
Beta phosphogypsum-based self-leveling mortar and preparation method thereof
| European Patent Office | 2020