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本文研究了化学外加剂对砂浆性能的影响.试验用500号波特兰水泥和细度模数Mkp=2.8~2.9的砂子,外加剂为超塑化剂C—3、НИЛ—10、НИЛ—20及早强剂CH(硫酸钠).为了选择超塑化剂的适宜掺量及研究其对砂浆拌合物用水量和对砂浆强度的影响进行了相应的试验.外加剂加到水泥和砂的混合物中,其水泥用量为600公斤/米~3.流动度为11~12厘米下确定拌合物的用水量,拌合物在试验室振动台(振幅0.4~0.5毫米,
This paper studied the effect of chemical admixtures on the properties of mortar. The test used No. 500 Portland cement and sand with a fineness modulus Mkp=2.8-2.9, and the admixtures were superplasticizers C-3, НИЛ-10, and НИЛ-. 20 Early strength agent CH (sodium sulphate). In order to select the appropriate amount of superplasticizer and to study its effect on the water content of mortar mix and the impact on the strength of mortar, a corresponding test was conducted. Additives were added to cement and sand. In the mixture, the cement dosage is 600 kg/m~3. The fluidity is 11 to 12 cm to determine the amount of water used for the mixture, and the mixture is in the shaking table of the laboratory (amplitude of 0.4 to 0.5 mm,