Est Study On Mechanical Properties Of Recycled Concrete And Non-Damaged Strength

Along with the architecture industry development, construction trash which it produces grows day by day, majority of abandons the concretes, abandons the concretes the stack to cause the pollution to the environment, simultaneously abandons the concretes the disposal cost to be astonishing. Based on the environmental protection and sustainable development's thought that to discover the pulverized coal ash regeneration concretes compressive strength with the non-breakage examination correlational dependence, this article compounded 108 to regenerate the thick aggregate substitution rate were 30% and 50%, simultaneously used 5%,10%,15% pulverized coal ash isometric substitution cement the C30 regeneration concretes briquette, had carried on the regeneration coagulation soil mechanics characteristic and the non-breakage measures the strong experiment. By testing the mechanical properties of recycled concrete, obtained fly ash and recycled aggregate Mixed performance and good compressive strength of recycled concrete, can better promote recycled concrete the application in the actual project, established strength curve and the formula of recycled aggregate concrete with fly ash and recycled Mixed, established basis for the local professional development of concrete strength curve.First, to mixes the thing to carry on the fluidity and the apparent density experiment, the analysis pulverized coal ash mixes the quantity and regenerates the thick aggregate substitution rate to mix the physical distribution mobile to the concretes influence.Next, carryed on the non-breakage to the regeneration concretes to measure that strong and the compressive strength test, the analysis regenerated the thick aggregate substitution rate and the pulverized coal ash mixes the quantity to regenerate the concretes compressive strength, the snapping back value and the supersonic wave velocity influence, simultaneously selectd many kinds of return methods, established the regeneration concretes 28d compressive strength snapping back law to measure that separately the strong formula,28d compressive strength supersonic method measured the strong formula and the 28d compressive strength supersonic snapping back synthesis method measured the strong formula three kinds measure the strong formula, and to three kinds measured that the strong formula carries on the contrastive analysis.Finally, applyed the non-breakage examination law examination to regenerate the reinforced concrete short stump compressive strength, the regeneration concretes supersonic snapping back synthesis which method the use obtains measured that the strong formula calculates its compressive strength, and carryed on the contrastive analysis with the homogeneous mixture ratio's regeneration concretes briquette compressive strength actual value.Through the pulverized coal ash which establishes to this article with regenerates the regeneration concretes which the thick aggregate double mixes to measure that the strong curve and the formula analysis, obtained three kind of pulverized coal ash regeneration concretes to measure the strong formula satisfies the accuracy requirement. The result indicated that it measured the strong formula and the pulverized coal ash regeneration concretes compressive strength has the good correlational dependence, and with the plain concrete measured that the strong formula compares had the big difference, used the non-breakage examination regeneration concretes compressive strength was reliable. This article researched for the place specialized regeneration concretes measured that the strong curve the formulation had laid certain research rationale, then for the pulverized coal ash regeneration concretes in the actual project's application, carryed on the construction quality control to provide the foundation technical data.