The concrete mixture proportions detailed in Table 2 were used to study the effect of curing on both normal Portland cement and silica fume concrete (labeled as NPC and SFC, respectively); w/cm ratio is 0.5 and cementitious material content 400 kg/m3.
Gail Vittori, codirector of the Center for Maximum Potential Building Systems, suggested several methods, among them eliminating interior finish materials that offgas volatile organic compounds, using recycled fly ash as a substitute for concrete, labeling building products more thoroughly, and using paints certified by the independent Green Seal standards program.
Two concrete columns (labeled C3 and C4) were subjected to accelerated corrosion using constant voltage and two other concrete columns (labeled C5 and C6) were subjected to accelerated corrosion using constant current.
Around 9 30 a.m., the crane, at 157 West 57th Street, between Avenue of the Americas and Seventh Avenue, was being used to hoist a concrete counterweight labeled at 13,500 pounds when it stopped working properly, leaving the load hanging about 30 stories above the street for several hours.
Two out of the six concrete columns (labeled C1 and C2) were used as control for structural testing purpose and were not subjected to any accelerated corrosion.
Concrete mixes labeled as 21.1, 21.2, 30.1, and 30.2, contained an Ecuadorian pozzolanic Portland cement categorized as high initial strength type-HE according to ASTM C1157 (ASTM 2015) and as type-HE hydraulic cement according to the Ecuadorian technical norm NTE INEN 2380 (NTE-INEN 2011).
From the 1950s all the way to the 1980s, repetitive units of concrete towers, labeled "Grands Ensembles," cropped up outside cities, and have ever since been hotly debated.
Saroyan is more literary, though, than the label "concrete poet" might suggest.
In other words, the concrete accidental terms label substances by means of the accidental forms from which they draw their names, so that they name substances only qua bearers (subiecta) of a form.
Road/location Pour Distress Plastic concrete temperature Core label Cruger Road WB None 94 °F CRWB1 CRWB2 EB Poor finishing, crazing 91 °F CREB1 CREB2 US150 Driveway Poor finishing, popouts Unknown 150D1 150D2 Ramp/gutter None 67 °F 150R1 150R2 I-74 Ramp Poor finishing, crazing 93 °F 74R1 74R2 74R3 Shoulder None 60° F 74S1 74S1.
