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A platform for research: civil engineering, architecture and urbanism
Preparation method of chemical composite reinforced non-spontaneous combustion coal gangue coarse aggregate
The invention discloses a preparation method of chemical composite reinforced non-spontaneous combustion coal gangue coarse aggregate, which comprises the following steps: compounding and reinforcing coal gangue coarse aggregate by using a calcium chloride solution, a water glass solution and a surfactant, so that water glass is hardened under the action of carbon dioxide to generate silicic acid gel, and meanwhile, the water glass is subjected to hydrolysis reaction to generate silica gel particles; a product is generated under the action of metal cations and silicate ions in the coal gangue, and the product fills pores of the aggregate under the adsorption action of the coal gangue, so that the strength is improved; the surfactant with a proper concentration is doped into the water glass, so that the infiltration capacity to the coal gangue can be further improved, calcium chloride and the water glass act to generate calcium silicate hydrate gel which is better filled in coal gangue pores, and the strength of the coal gangue is improved. The situation of shortage of gravel materials can be relieved, the utilization field of coal gangue is widened, various environmental problems caused by stacking of a large amount of coal gangue are reduced, and the sustainable development concept is met.
本发明公布了一种化学复合强化非自燃煤矸石粗集料的制备方法，本发明利用了氯化钙溶液、水玻璃溶液和表面活性剂复合强化煤矸石粗集料，使水玻璃在二氧化碳作用下硬化生成硅酸凝胶，同时水玻璃水解反应生成硅胶颗粒；在煤矸石中的金属阳离子与硅酸根离子作用下产生生成物，生成物在煤矸石的吸附作用下，填充骨料的孔隙，强度提高；在水玻璃中掺入适量浓度的表面活性剂可进一步提高对煤矸石的渗透能力，使氯化钙与水玻璃作用生成水化硅酸钙凝胶更好填充于煤矸石孔隙，提高煤矸石强度。本发明可以缓解砂石材料紧缺的局面、拓宽煤矸石的利用领域和减少煤矸石大量堆放造成的各类环境问题，符合可持续发展理念。
Preparation method of chemical composite reinforced non-spontaneous combustion coal gangue coarse aggregate
The invention discloses a preparation method of chemical composite reinforced non-spontaneous combustion coal gangue coarse aggregate, which comprises the following steps: compounding and reinforcing coal gangue coarse aggregate by using a calcium chloride solution, a water glass solution and a surfactant, so that water glass is hardened under the action of carbon dioxide to generate silicic acid gel, and meanwhile, the water glass is subjected to hydrolysis reaction to generate silica gel particles; a product is generated under the action of metal cations and silicate ions in the coal gangue, and the product fills pores of the aggregate under the adsorption action of the coal gangue, so that the strength is improved; the surfactant with a proper concentration is doped into the water glass, so that the infiltration capacity to the coal gangue can be further improved, calcium chloride and the water glass act to generate calcium silicate hydrate gel which is better filled in coal gangue pores, and the strength of the coal gangue is improved. The situation of shortage of gravel materials can be relieved, the utilization field of coal gangue is widened, various environmental problems caused by stacking of a large amount of coal gangue are reduced, and the sustainable development concept is met.
本发明公布了一种化学复合强化非自燃煤矸石粗集料的制备方法，本发明利用了氯化钙溶液、水玻璃溶液和表面活性剂复合强化煤矸石粗集料，使水玻璃在二氧化碳作用下硬化生成硅酸凝胶，同时水玻璃水解反应生成硅胶颗粒；在煤矸石中的金属阳离子与硅酸根离子作用下产生生成物，生成物在煤矸石的吸附作用下，填充骨料的孔隙，强度提高；在水玻璃中掺入适量浓度的表面活性剂可进一步提高对煤矸石的渗透能力，使氯化钙与水玻璃作用生成水化硅酸钙凝胶更好填充于煤矸石孔隙，提高煤矸石强度。本发明可以缓解砂石材料紧缺的局面、拓宽煤矸石的利用领域和减少煤矸石大量堆放造成的各类环境问题，符合可持续发展理念。
Preparation method of chemical composite reinforced non-spontaneous combustion coal gangue coarse aggregate
一种化学复合强化非自燃煤矸石粗集料的制备方法
ZHANG XIANGDONG (author) / LI ZONG (author) / WANG SIQI (author) / ZHANG YU (author) / LI WENLIANG (author) / E FEI (author) / LI TIANYU (author) / ZHENG TAO (author) / WU SIYAO (author)
2024-05-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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