Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydration heat inhibitor suitable for concrete construction in high-temperature environment and preparation method thereof
The invention discloses a hydration heat inhibitor suitable for hydraulic concrete construction in a high-temperature environment and a preparation method thereof. The hydration heat inhibitor comprises the following components in percentage by weight: 2%-20% of organic phosphonic acid, 10%-20% of polybasic weak acid, 1%-5% of strong base weak acid salt, 0%-1% of a stabilizer, 0%-1% of an organictackifier and the balance of water. The hydration heat inhibitor is clear and uniform liquid, the pH value of the hydration heat inhibitor is 3.0-5.0, the density of the hydration heat inhibitor is 1.40-1.50 g/cm3, and the solid content of the hydration heat inhibitor is 10%-30%. The hydration heat release amount of cement 7d doped with 0.6% (cement weight) of the hydration heat inhibitor is 14.4%-53.7% of that of a blank sample, and the appearance time of a hydration heat peak value is delayed by 108.4-113.3 h. The hydration heat inhibitor has a remarkable hydration heat inhibition effect, and meanwhile, a preparation scheme can be formulated in a personalized manner according to the requirements of different projects; at 35 DEG C, the cement setting time retention rate doped with the hydration heat inhibitor is 97.6%-98.8%, the hydration heat inhibitor can still keep a remarkable hydration heat inhibition effect in hot summer and high-temperature environment (35 DEG C), and the hydration heat inhibitor is suitable for hydraulic concrete construction in the high-temperature environment.
本发明公开了一种适用于高温环境水工混凝土施工的水化热抑制剂及其制备方法。所述水化热抑制剂其各组分按照重量百分比的配比如下：有机膦酸为2％～20％，多元弱酸10％～20％，强碱弱酸盐1％～5％，稳定剂0％～1％，有机增粘剂0％～1％，余量为水。所述水化热抑制剂，为澄清均一液体，其pH为3.0～5.0，密度1.40g/cm～1.50g/cm，固含量10％～30％。掺0.6％(水泥重量)所述水化热抑制剂的水泥7d水化放热量为空白样的14.4％～53.7％，水化热峰值出现的时间延后了108.4h～113.3h。所述水化热抑制剂具有显著的水化热抑制效果，同时针对不同工程的需求，可以个性化制定制备方案。在35℃时，掺所述水化热抑制剂的水泥凝结时间保留率为97.6％～98.8％，所述水化热抑制剂在炎热夏季和高温环境下(35℃)仍可保持显著的水化热抑制效果，适用于高温环境水工混凝土施工。
Hydration heat inhibitor suitable for concrete construction in high-temperature environment and preparation method thereof
The invention discloses a hydration heat inhibitor suitable for hydraulic concrete construction in a high-temperature environment and a preparation method thereof. The hydration heat inhibitor comprises the following components in percentage by weight: 2%-20% of organic phosphonic acid, 10%-20% of polybasic weak acid, 1%-5% of strong base weak acid salt, 0%-1% of a stabilizer, 0%-1% of an organictackifier and the balance of water. The hydration heat inhibitor is clear and uniform liquid, the pH value of the hydration heat inhibitor is 3.0-5.0, the density of the hydration heat inhibitor is 1.40-1.50 g/cm3, and the solid content of the hydration heat inhibitor is 10%-30%. The hydration heat release amount of cement 7d doped with 0.6% (cement weight) of the hydration heat inhibitor is 14.4%-53.7% of that of a blank sample, and the appearance time of a hydration heat peak value is delayed by 108.4-113.3 h. The hydration heat inhibitor has a remarkable hydration heat inhibition effect, and meanwhile, a preparation scheme can be formulated in a personalized manner according to the requirements of different projects; at 35 DEG C, the cement setting time retention rate doped with the hydration heat inhibitor is 97.6%-98.8%, the hydration heat inhibitor can still keep a remarkable hydration heat inhibition effect in hot summer and high-temperature environment (35 DEG C), and the hydration heat inhibitor is suitable for hydraulic concrete construction in the high-temperature environment.
本发明公开了一种适用于高温环境水工混凝土施工的水化热抑制剂及其制备方法。所述水化热抑制剂其各组分按照重量百分比的配比如下：有机膦酸为2％～20％，多元弱酸10％～20％，强碱弱酸盐1％～5％，稳定剂0％～1％，有机增粘剂0％～1％，余量为水。所述水化热抑制剂，为澄清均一液体，其pH为3.0～5.0，密度1.40g/cm～1.50g/cm，固含量10％～30％。掺0.6％(水泥重量)所述水化热抑制剂的水泥7d水化放热量为空白样的14.4％～53.7％，水化热峰值出现的时间延后了108.4h～113.3h。所述水化热抑制剂具有显著的水化热抑制效果，同时针对不同工程的需求，可以个性化制定制备方案。在35℃时，掺所述水化热抑制剂的水泥凝结时间保留率为97.6％～98.8％，所述水化热抑制剂在炎热夏季和高温环境下(35℃)仍可保持显著的水化热抑制效果，适用于高温环境水工混凝土施工。
Hydration heat inhibitor suitable for concrete construction in high-temperature environment and preparation method thereof
一种适用于高温环境下混凝土施工的水化热抑制剂及其制备方法
XU YANG (Autor:in) / LYU XINGDONG (Autor:in)
25.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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