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冬期施工,除有特殊功能要求的工程以外,一般工程均采用掺盐砂浆进行砌筑施工,即按砌体的类别、负温的条件配制盐水,作为拌和水加入砂浆内。要使水中盐的掺量符合要求,必须控制盐水的浓度。需要用密度计,甚至还要使用温度计,随时测定盐水密度,查出相应浓度的掺盐量。但目前现场施工不易掌握掺盐量,达不到预期的效果。现推荐一种易于操作人员掌握,而且能比较准确地控制掺盐量的施工方法。具体作法如下:1.在搅拌机棚内设一个2～4米~3水箱或其它柱体容器,下面生火,以加热拌和水。搅拌机注水管接通水桶,可直接注入搅拌机使用。2.在水箱的内壁面上竖向做出分格刻度标记,最好从最高液面到箱底做10等分。3.计算每一刻度格水的容积,并根据盐水浓度的要求计算出需加多少盐,即单位用盐量。
In winter construction, in addition to projects with special functional requirements, the general project uses salt-mixed mortar for masonry construction. That is, salt water is prepared according to the type of masonry and negative temperature conditions, and is mixed into the mortar as mixing water. To make the amount of salt in water meet the requirements, the concentration of salt water must be controlled. Densitometers, and even thermometers, need to be used to determine the brine density at any time and find the appropriate concentration of salt. However, the on-site construction is not easy to grasp the amount of salt and it is not able to achieve the expected results. It is now recommended to use a construction method that is easy for operators to control, and that can more accurately control the amount of salt added. The specific methods are as follows: 1. Set a 2 to 4 m~3 water tank or other column container in the mixer shed, and underneath the fire to heat the mixing water. Mixer injection pipe connected to the bucket, can be directly injected into the mixer. 2. Make a vertical grid mark on the inner wall of the tank. It is best to divide the tank from the highest level to the bottom of the tank. 3. Calculate the volume of water for each scale, and calculate how much salt to add according to the brine concentration, ie the amount of salt used for the unit.