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High-strength concrete as well as preparation method and application thereof
The invention provides high-strength concrete and a preparation method and application thereof, and belongs to the technical field of concrete.The preparation method comprises the steps that fly ash is activated, modified through a silane coupling agent and evenly mixed with alkyl orthosilicate under the acidic condition, a sol-gel reaction is carried out, gel is formed, the temperature is increased, the pressure intensity is reduced, xerogel is formed, the xerogel is ignited, and the high-strength concrete is obtained. Uniformly mixing the fly ash-silicon dioxide compound with aggregate and a water reducing agent to prepare a super early strength agent, adding the super early strength agent into a mixture of cement, coarse aggregate, fine aggregate, asphalt powder and water, heating, stirring, uniformly mixing, pouring and curing to obtain the high-strength concrete. According to the high-strength concrete prepared by the invention, the strength of the prepared concrete can be obviously improved, and the high-strength concrete has a wide application prospect.
本发明提出了一种高强混凝土及其制备方法和应用，属于混凝土技术领域，将粉煤灰经过活化后，通过硅烷偶联剂改性，在酸性条件下，与正硅酸烷基酯混合均匀，发生溶胶凝胶反应，形成凝胶，并提高温度，降低压强，形成干凝胶，点燃干凝胶，得到粉煤灰‑二氧化硅复合物，与骨料、减水剂混匀，制得超早强剂，加入水泥、粗骨料、细骨料、沥青粉、水的混合物中，加热搅拌混合均匀，浇注、养护，得到高强混凝土。本发明制得的高强混凝土，能够明显提高制得的混凝土的强度，具有广阔的应用前景。
High-strength concrete as well as preparation method and application thereof
The invention provides high-strength concrete and a preparation method and application thereof, and belongs to the technical field of concrete.The preparation method comprises the steps that fly ash is activated, modified through a silane coupling agent and evenly mixed with alkyl orthosilicate under the acidic condition, a sol-gel reaction is carried out, gel is formed, the temperature is increased, the pressure intensity is reduced, xerogel is formed, the xerogel is ignited, and the high-strength concrete is obtained. Uniformly mixing the fly ash-silicon dioxide compound with aggregate and a water reducing agent to prepare a super early strength agent, adding the super early strength agent into a mixture of cement, coarse aggregate, fine aggregate, asphalt powder and water, heating, stirring, uniformly mixing, pouring and curing to obtain the high-strength concrete. According to the high-strength concrete prepared by the invention, the strength of the prepared concrete can be obviously improved, and the high-strength concrete has a wide application prospect.
本发明提出了一种高强混凝土及其制备方法和应用，属于混凝土技术领域，将粉煤灰经过活化后，通过硅烷偶联剂改性，在酸性条件下，与正硅酸烷基酯混合均匀，发生溶胶凝胶反应，形成凝胶，并提高温度，降低压强，形成干凝胶，点燃干凝胶，得到粉煤灰‑二氧化硅复合物，与骨料、减水剂混匀，制得超早强剂，加入水泥、粗骨料、细骨料、沥青粉、水的混合物中，加热搅拌混合均匀，浇注、养护，得到高强混凝土。本发明制得的高强混凝土，能够明显提高制得的混凝土的强度，具有广阔的应用前景。
High-strength concrete as well as preparation method and application thereof
一种高强混凝土及其制备方法和应用
YANG KAI (author) / WANG CUICUI (author)
2023-03-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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