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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage lightweight high-alkali-activated foam concrete as well as preparation method and application thereof
The invention discloses low-shrinkage lightweight high-alkali activated foam concrete as well as a preparation method and application thereof. The foam concrete is prepared from the following raw materials in parts by weight: 30 to 80 parts of slag powder, 40 to 120 parts of mineral admixture, 2 to 15 parts of porous filler, 5 to 20 parts of sodium potassium water glass, 0.5 to 10 parts of foaming agent and 0.5 to 5 parts of anti-shrinking agent. Wherein the anti-shrinking agent is prepared by the following steps: putting water-absorbent resin into a saturated shrinkage reducing agent solution, preserving heat under a heating condition, enabling the water-absorbent resin to reach a saturated water state, then separating out the water-absorbent resin, and draining off liquid, thereby obtaining the anti-shrinking agent. The self-shrinkage degree of the alkali-activated foam concrete is reduced, the problem of shrinkage cracking of the foam concrete in the service process is solved, and the compressive strength of the alkali-activated foam concrete is also improved.
本发明公开一种低缩率轻质高强碱激发泡沫混凝土及其制备方法与应用。所述泡沫混凝土的原料组成包括：矿渣粉30~80重量份、矿物掺合料40~120重量份、多孔填料2~15重量份、钠钾质水玻璃5~20重量份、发泡剂0.5~10重量份、抗收缩剂0.5~5重量份。其中，所述抗收缩剂采用如下方法制备：将吸水树脂置于饱和减缩剂溶液当中后在加热条件下保温，使所述吸水树脂达到饱水状态，然后分离出所述吸水树脂沥干液体，即得抗收缩剂。本发明不仅减轻了碱激发泡沫混凝土的自收缩程度，克服了泡沫混凝土服役过程中收缩开裂的问题，而且还增加了碱激发泡沫混凝土的抗压强度。
Low-shrinkage lightweight high-alkali-activated foam concrete as well as preparation method and application thereof
The invention discloses low-shrinkage lightweight high-alkali activated foam concrete as well as a preparation method and application thereof. The foam concrete is prepared from the following raw materials in parts by weight: 30 to 80 parts of slag powder, 40 to 120 parts of mineral admixture, 2 to 15 parts of porous filler, 5 to 20 parts of sodium potassium water glass, 0.5 to 10 parts of foaming agent and 0.5 to 5 parts of anti-shrinking agent. Wherein the anti-shrinking agent is prepared by the following steps: putting water-absorbent resin into a saturated shrinkage reducing agent solution, preserving heat under a heating condition, enabling the water-absorbent resin to reach a saturated water state, then separating out the water-absorbent resin, and draining off liquid, thereby obtaining the anti-shrinking agent. The self-shrinkage degree of the alkali-activated foam concrete is reduced, the problem of shrinkage cracking of the foam concrete in the service process is solved, and the compressive strength of the alkali-activated foam concrete is also improved.
本发明公开一种低缩率轻质高强碱激发泡沫混凝土及其制备方法与应用。所述泡沫混凝土的原料组成包括：矿渣粉30~80重量份、矿物掺合料40~120重量份、多孔填料2~15重量份、钠钾质水玻璃5~20重量份、发泡剂0.5~10重量份、抗收缩剂0.5~5重量份。其中，所述抗收缩剂采用如下方法制备：将吸水树脂置于饱和减缩剂溶液当中后在加热条件下保温，使所述吸水树脂达到饱水状态，然后分离出所述吸水树脂沥干液体，即得抗收缩剂。本发明不仅减轻了碱激发泡沫混凝土的自收缩程度，克服了泡沫混凝土服役过程中收缩开裂的问题，而且还增加了碱激发泡沫混凝土的抗压强度。
Low-shrinkage lightweight high-alkali-activated foam concrete as well as preparation method and application thereof
Patent
Electronic Resource
Alkali-activated foam concrete and preparation method thereof
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