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在一般小型水利工地计算混凝土用料时,由于为数有限,同时人力、设备以及时间不容许进行实验配合法和其他配合比例图表法,而常用的是简易的混凝土配合法。现将这种方法介绍如下: 先按已知粗集料、水泥品种及标号、混凝土标号条件(细集料限用天然砂)在第一表中查得水灰比数值。然后按混凝土所需稠度与浇捣方法、混凝土中的含钢量情况,在第二表中查得混凝土每立米中的水泥用量及所有其他用料的重量配合比例(水泥:细集料:粗集料),以公斤为单位。如混凝土护坡予制板标号为200~#,无钢筋或有少量钢筋,稠度较干,用振动器捣实,粗集料采用直径
In general, small-scale water conservancy site calculation of concrete materials, due to a limited number of manpower, equipment and time do not allow the experimental method of cooperation and other with the proportion of chart method, and commonly used is a simple method of concrete. Now this method is introduced as follows: According to the known coarse aggregate, cement varieties and labeling, concrete labeling conditions (fine aggregate limited natural sand) in the first table check the water-cement ratio values. Then according to the required consistency of concrete and pouring method, the amount of steel in the concrete, in the second table check the amount of concrete per cubic meter of concrete and all the other materials with the weight ratio (cement: fine aggregate: thick Aggregate), in kilograms. Such as concrete slope to the system board label 200 ~ #, no reinforcement or a small amount of steel, the consistency of dry, vibrator tamping, coarse aggregate diameter