论文部分内容阅读
按规定的方法制作水泥软练胶砂试块三组:一组用于快测,两组用于测7天、28天强度。试块成型后24小时拆模,取一组试块放入30℃水温的水泥蒸煮箱中,水位高出试块表面5厘米,用1500瓦电炉加热至沸,继续加热2小时,然后断电冷至室温。取出试块,擦干水迹,做抗折抗压试验,即得出水泥快测强度。用这种沸煮法对武汉地区五种主要品种的水泥做快测,同标准测
According to the prescribed method, three groups of cement soft-sanding sand test blocks were made: one group was used for quick testing, and two groups were used to measure the strengths of 7 days and 28 days. Demolition of the test block 24 hours after molding, take a group of test blocks into a 30 °C water temperature in the cement cooking tank, the water level higher than the test block surface 5 cm, heated to boiling with a 1500 watt electric furnace, heating for 2 hours, and then power off Cold to room temperature. Take out the test block, dry the water traces, and perform the flexural and compressive test, which is to obtain the strength of the quick test of the cement. Using this boil method to quickly test the five main varieties of cement in Wuhan, with the standard test