Pouring and pressure tests of concrete. . JZ&J-dJdJOUOJJO posy. {<& p&9fj 5 ^ &* II $ ;> *s p2^ fl *3 $S V) ^ -*] IP i i ? rf ^£ ^ \ 5n STM \ t^4 J^ T urfrc^c/qi-sifajouojjo sunssdjj urbsJ^c/qf-a/ffjoLfCOjo aunscsuy Pouring and Pressure Tests of Concrete 13 Cell No. 3 registered a maximum pressure of pounds persquare inch at the end of 30 minutes under a head of more concrete could be added, as the form was full, but addi-tional pressure readings were taken at intervals during the next60 minutes. Each succeeding reading became lower as theconcrete hardened. T

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Pouring and pressure tests of concrete. . JZ&J-dJdJOUOJJO posy. {<& p&9fj 5 ^ &* II $ ;> *s p2^ fl *3 $S V) ^ -*] IP i i ? rf ^£ ^ \ 5n STM \ t^4 J^ T urfrc^c/qi-sifajouojjo sunssdjj urbsJ^c/qf-a/ffjoLfCOjo aunscsuy Pouring and Pressure Tests of Concrete 13 Cell No. 3 registered a maximum pressure of pounds persquare inch at the end of 30 minutes under a head of more concrete could be added, as the form was full, but addi-tional pressure readings were taken at intervals during the next60 minutes. Each succeeding reading became lower as theconcrete hardened. The curve is shown dotted after the lastreading to indicate the probable rate of decrease to zero zero pressure would be indicated in about the samelength of time as for cells Nos. 1 and 2. Cells Nos. 4 and 5, which registered upward vertical pressures,present somewhat the same characteristics in the time-pressurecurves as the cells measuring lateral pressure, except that theyshow smaller pressures and reach their m

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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernatio, bookyear1920