Reinforced pipe and method of making

Claim 1

A PRESTRESSED REINFORCED COMPOSITE CONCRETE PIPE CONSTRUCTION HAVING SUBSTANTIALLY IMPACT RESISTANCE TO DYNAMIC LOADING AND BEING SUBSTANTIALLY IMPERVIOUS TO THE ENTRANCE OF ADVERSE CHEMICALS, SAID PIPE COMPRISING A POROUS CONCRETE PIPE BODY HAVING OPEN PORES AND INTERSTICES CONNECTED THEREWITH, SAID PORES AND INTERSTICES IN THE NEIGHBORHOOD OF THE SURFACE OF SAID PIPE CONSTRUCTION BEING SUBSTANTIALLY FILLED AND COVERED BY A LAYER OF TOUGH, RUBBERY, REINFORCING RESIN COMPOSITION PENETRATED AND PERMEATED INTO SAID PORES AND INTERSTICES AND HAVING A SURPLUS OF SAID RESIN COMPOSITION ON THE SURFACE THEREOVER, SAID SURPLUS COMPRISING A LAYER OF POLYMERIZED RESIN COMPOSITION CONTAINING FILLER, SAID LAYER HAVING HELICALLY DISPOSED CONTINUOUS UNIDIRECTIONAL FIBERGLASS STRANDS UNDER TENSION EMBEDDED THEREIN, SAID FIBERGLASS STRANDS HAVING SUBSTANTIALLY 3% CAPABILITY OF EXTENSION UNDER LOADING AT LESS THAN ITS ULTIMATE LOAD CAPACITY AND SUBSTANTIALLY COMPLETE RECOVERY TO ORIGINAL STATE AS BEFORE LOADING, SAID POLYMERIZED RESIN COMPOSITION HAVING PROPERTIES OF EXTENSION AND RECOVERY AT LEAST EQUAL TO THAT OF SAID FIBERGLASS STRANDS, SAID COMBINATION OF FIBERGLASS STRANDS AND SAID POLYMERIZED RESIN COMPOSITION AND FILLER THEREOF PROVIDING SAID IMPACT RESISTANCE TO DYNAMIC LOADING BY ITS HIGH STRENGTH AND CAPABILITY TO CHANGE THE PHASE OF CYCLIC INPUTS OF DYNAMIC ENERGY.