Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Strange and Wonderful

Damn! as a Civil Engineer I've worked with concrete as a structural material for the last ten years, now I'm building jy own kitchen and thought I had an original idea. The book is not bad on ideas but poor in specifications and technical details. Moreover, the authors don't seem to know much about things like the effect of vibrating the poured mix, the qualities of different type of concrete, different aggregate and, last but not least, admixtures.