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Machine-made sand concrete synergist and preparation method thereof
The invention discloses a machine-made sand concrete synergist and a preparation method thereof.The synergist is prepared from, by mass, 18-25% of a reinforcing agent, 15-20% of a dispersing agent, 0.3-0.5% of nano CaCO3, 0.2-0.6% of a foaming agent, 0.06-0.3% of a foam stabilizer and 54-67% of water; the nano CaCO3 is white powder with the average particle size of 60 nm and is prepared from carbide slag; the preparation method comprises the following steps: adding nano CaCO3 into a dispersing agent and carrying out ultrasonic dispersion to prepare a nano CaCO3 dispersion liquid; mixing a reinforcing agent, a foaming agent, a foam stabilizer and water, stirring the components for 1.5-3 h at the temperature of 40-60 DEG C, adding the nano CaCO3 dispersion liquid, and continuously stirringthe components for 0.5-2.5 h to obtain the machine-made sand concrete synergist, which can reduce the cement consumption of the machine-made sand concrete of the same grade by 9% and keep the performance of the machine-made sand concrete mixture basically unchanged. The strength of the machine-made sand concrete is not changed or even higher although the cement consumption is reduced, and the durability of the machine-made sand concrete is improved, so that the cost of the machine-made sand concrete is reduced.
本发明公开了一种机制砂混凝土增效剂及其制备方法，增效剂以质量百分比计，包括：增强剂18‑25％、分散剂15‑20％、纳米CaCO30.3‑0.5％、起泡剂0.2‑0.6％、稳泡剂0.06‑0.3％以及水54‑67％，所述纳米CaCO3是平均粒径为60nm纳米的白色粉末，由电石渣制备得到，将纳米CaCO3加入到分散剂中并超声分散，制得纳米CaCO3分散液；再将增强剂、起泡剂、稳泡剂以及水混合，在40‑60℃搅拌1.5‑3h，然后加入上述纳米CaCO3分散液，继续搅拌0.5‑2.5h，得到机制砂混凝土增效剂，能够降低同等级机制砂混凝土水泥用量的9％，并使机制砂混凝土拌合物性能保持基本不变，在水泥用量降低的情况下保证机制砂混凝土强度不变甚至更高，提高机制砂混凝土耐久性，从而降低机制砂混凝土成本。
Machine-made sand concrete synergist and preparation method thereof
The invention discloses a machine-made sand concrete synergist and a preparation method thereof.The synergist is prepared from, by mass, 18-25% of a reinforcing agent, 15-20% of a dispersing agent, 0.3-0.5% of nano CaCO3, 0.2-0.6% of a foaming agent, 0.06-0.3% of a foam stabilizer and 54-67% of water; the nano CaCO3 is white powder with the average particle size of 60 nm and is prepared from carbide slag; the preparation method comprises the following steps: adding nano CaCO3 into a dispersing agent and carrying out ultrasonic dispersion to prepare a nano CaCO3 dispersion liquid; mixing a reinforcing agent, a foaming agent, a foam stabilizer and water, stirring the components for 1.5-3 h at the temperature of 40-60 DEG C, adding the nano CaCO3 dispersion liquid, and continuously stirringthe components for 0.5-2.5 h to obtain the machine-made sand concrete synergist, which can reduce the cement consumption of the machine-made sand concrete of the same grade by 9% and keep the performance of the machine-made sand concrete mixture basically unchanged. The strength of the machine-made sand concrete is not changed or even higher although the cement consumption is reduced, and the durability of the machine-made sand concrete is improved, so that the cost of the machine-made sand concrete is reduced.
本发明公开了一种机制砂混凝土增效剂及其制备方法，增效剂以质量百分比计，包括：增强剂18‑25％、分散剂15‑20％、纳米CaCO30.3‑0.5％、起泡剂0.2‑0.6％、稳泡剂0.06‑0.3％以及水54‑67％，所述纳米CaCO3是平均粒径为60nm纳米的白色粉末，由电石渣制备得到，将纳米CaCO3加入到分散剂中并超声分散，制得纳米CaCO3分散液；再将增强剂、起泡剂、稳泡剂以及水混合，在40‑60℃搅拌1.5‑3h，然后加入上述纳米CaCO3分散液，继续搅拌0.5‑2.5h，得到机制砂混凝土增效剂，能够降低同等级机制砂混凝土水泥用量的9％，并使机制砂混凝土拌合物性能保持基本不变，在水泥用量降低的情况下保证机制砂混凝土强度不变甚至更高，提高机制砂混凝土耐久性，从而降低机制砂混凝土成本。
Machine-made sand concrete synergist and preparation method thereof
一种机制砂混凝土增效剂及其制备方法
LIN XIHUA (author) / LU DONGYI (author) / ZHAO SHIHAO (author) / HE KAI (author) / KE XU (author) / YE HONGHONG (author) / YANG GUANGLIN (author) / HE XIN (author) / WANG JUN (author)
2020-11-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Machine-made sand concrete using synergist and preparation method of machine-made sand concrete
| European Patent Office | 2020