Universal Portland Cement Co., C. W. Boynton · Universal Portland Cement Co. · leaf 33
crete should not be permitted to stand after the mixingis completed, but should be placed immediately, even though itnecessitates mixing smaller batches. Any appreciable drying of the concrete, either before or afterplacing, is apt to result in defective work. Preserving Proportions. Proper regard… … Figure 14. The lines shown in the walks represented by Figures 14 and 15, are incipi-ent cracks made prominent by the deposit of dirt from water which has filteredthrough them. This is a common and unsightly defect, and at first glance mightbe attributed to shrinkage, but careful examination of…
![An illustration from XIXe [i.e. Dix-neuvième] siècle (en France); classes - moeurs - usages - costumes - inventions. Ouvrage illustré d'un front. chromotypographique, de 16 planches coloriées aux patrons, de 36 entetes et lettres ornées et de 487 gravures (dont 24 tirées hors texte) d'après les principaux artistes du siècle (1893)](https://img.insideoutlibrary.com/img/200/ia-xixeiedixneuvi00granuoft-674-493.webp)
